Merge pull request #2 from ErikZalm/Marlin_v1

Sync up to Marlin

Marlin/Configuration.h

 // example_configurations/delta directory.
 //
 
+//===========================================================================
+//============================= SCARA Printer ===============================
+//===========================================================================
+// For a Delta printer replace the configuration files with the files in the
+// example_configurations/SCARA directory.
+//
+
 // User-specified version info of this build to display in [Pronterface, etc] terminal window during
 // startup. Implementation of an idea by Prof Braino to inform user that any changes made to this
 // build by the user have been successfully uploaded into firmware.
 #define SERIAL_PORT 0
 
 // This determines the communication speed of the printer
-// This determines the communication speed of the printer
 #define BAUDRATE 250000
 
 // This enables the serial port associated to the Bluetooth interface
 // 33 = RAMPS 1.3 / 1.4 (Power outputs: Extruder, Fan, Bed)
 // 34 = RAMPS 1.3 / 1.4 (Power outputs: Extruder0, Extruder1, Bed)
 // 35 = RAMPS 1.3 / 1.4 (Power outputs: Extruder, Fan, Fan)
+// 36 = RAMPS 1.3 / 1.4 (Power outputs: Extruder0, Extruder1, Fan)
 // 4  = Duemilanove w/ ATMega328P pin assignment
 // 5  = Gen6
 // 51 = Gen6 deluxe
 // 301= Rambo
 // 21 = Elefu Ra Board (v3)
 // 88 = 5DPrint D8 Driver Board
+// 999 = Leapfrog
 
 #ifndef MOTHERBOARD
 #define MOTHERBOARD 7
 // 10 is 100k RS thermistor 198-961 (4.7k pullup)
 // 11 is 100k beta 3950 1% thermistor (4.7k pullup)
 // 12 is 100k 0603 SMD Vishay NTCS0603E3104FXT (4.7k pullup) (calibrated for Makibox hot bed)
+// 13 is 100k Hisens 3950  1% up to 300°C for hotend "Simple ONE " & "Hotend "All In ONE" 
 // 20 is the PT100 circuit found in the Ultimainboard V2.x
 // 60 is 100k Maker's Tool Works Kapton Bed Thermistor beta=3950
 //
 // 1010 is Pt1000 with 1k pullup (non standard)
 // 147 is Pt100 with 4k7 pullup
 // 110 is Pt100 with 1k pullup (non standard)
-// 70 is 500C thermistor for Pico hot end
 
 #define TEMP_SENSOR_0 -1
 #define TEMP_SENSOR_1 -1
                                   // is more then PID_FUNCTIONAL_RANGE then the PID will be shut off and the heater will be set to min/max.
   #define PID_INTEGRAL_DRIVE_MAX 255  //limit for the integral term
   #define K1 0.95 //smoothing factor within the PID
-  #define PID_dT ((OVERSAMPLENR * 8.0)/(F_CPU / 64.0 / 256.0)) //sampling period of the temperature routine
+  #define PID_dT ((OVERSAMPLENR * 10.0)/(F_CPU / 64.0 / 256.0)) //sampling period of the temperature routine
 
 // If you are using a pre-configured hotend then you can use one of the value sets by uncommenting it
 // Ultimaker
 //============================= Bed Auto Leveling ===========================
 
 //#define ENABLE_AUTO_BED_LEVELING // Delete the comment to enable (remove // at the start of the line)
+#define Z_PROBE_REPEATABILITY_TEST  // If not commented out, Z-Probe Repeatability test will be included if Auto Bed Leveling is Enabled.
 
 #ifdef ENABLE_AUTO_BED_LEVELING
 
   #define Z_RAISE_BEFORE_PROBING 15    //How much the extruder will be raised before traveling to the first probing point.
   #define Z_RAISE_BETWEEN_PROBINGS 5  //How much the extruder will be raised when traveling from between next probing points
 
+  //#define Z_PROBE_SLED // turn on if you have a z-probe mounted on a sled like those designed by Charles Bell
+  //#define SLED_DOCKING_OFFSET 5 // the extra distance the X axis must travel to pickup the sled. 0 should be fine but you can push it further if you'd like.
 
   //If defined, the Probe servo will be turned on only during movement and then turned off to avoid jerk
   //The value is the delay to turn the servo off after powered on - depends on the servo speed; 300ms is good value, but you can try lower it.

Marlin/ConfigurationStore.cpp

 // the default values are used whenever there is a change to the data, to prevent
 // wrong data being written to the variables.
 // ALSO:  always make sure the variables in the Store and retrieve sections are in the same order.
-#ifdef DELTA
-#define EEPROM_VERSION "V11"
-#else
+
 #define EEPROM_VERSION "V10"
+#ifdef DELTA
+	#undef EEPROM_VERSION
+	#define EEPROM_VERSION "V11"
+#endif
+#ifdef SCARA
+	#undef EEPROM_VERSION
+	#define EEPROM_VERSION "V12"
 #endif
 
 #ifdef EEPROM_SETTINGS
   char ver[4]= "000";
   int i=EEPROM_OFFSET;
   EEPROM_WRITE_VAR(i,ver); // invalidate data first 
-  EEPROM_WRITE_VAR(i,axis_steps_per_unit);  
+  EEPROM_WRITE_VAR(i,axis_steps_per_unit);
   EEPROM_WRITE_VAR(i,max_feedrate);  
   EEPROM_WRITE_VAR(i,max_acceleration_units_per_sq_second);
   EEPROM_WRITE_VAR(i,acceleration);
   EEPROM_WRITE_VAR(i,max_xy_jerk);
   EEPROM_WRITE_VAR(i,max_z_jerk);
   EEPROM_WRITE_VAR(i,max_e_jerk);
-  EEPROM_WRITE_VAR(i,add_homeing);
+  EEPROM_WRITE_VAR(i,add_homing);
   #ifdef DELTA
   EEPROM_WRITE_VAR(i,endstop_adj);
   EEPROM_WRITE_VAR(i,delta_radius);
     int lcd_contrast = 32;
   #endif
   EEPROM_WRITE_VAR(i,lcd_contrast);
+  #ifdef SCARA
+  EEPROM_WRITE_VAR(i,axis_scaling);        // Add scaling for SCARA
+  #endif
   char ver2[4]=EEPROM_VERSION;
   i=EEPROM_OFFSET;
   EEPROM_WRITE_VAR(i,ver2); // validate data
     SERIAL_ECHOLN("");
       
     SERIAL_ECHO_START;
+#ifdef SCARA
+SERIAL_ECHOLNPGM("Scaling factors:");
+    SERIAL_ECHO_START;
+    SERIAL_ECHOPAIR("  M365 X",axis_scaling[0]);
+    SERIAL_ECHOPAIR(" Y",axis_scaling[1]);
+    SERIAL_ECHOPAIR(" Z",axis_scaling[2]);
+    SERIAL_ECHOLN("");
+      
+    SERIAL_ECHO_START;
+#endif
     SERIAL_ECHOLNPGM("Maximum feedrates (mm/s):");
     SERIAL_ECHO_START;
     SERIAL_ECHOPAIR("  M203 X",max_feedrate[0]);
     SERIAL_ECHO_START;
     SERIAL_ECHOLNPGM("Home offset (mm):");
     SERIAL_ECHO_START;
-    SERIAL_ECHOPAIR("  M206 X",add_homeing[0] );
-    SERIAL_ECHOPAIR(" Y" ,add_homeing[1] );
-    SERIAL_ECHOPAIR(" Z" ,add_homeing[2] );
+    SERIAL_ECHOPAIR("  M206 X",add_homing[0] );
+    SERIAL_ECHOPAIR(" Y" ,add_homing[1] );
+    SERIAL_ECHOPAIR(" Z" ,add_homing[2] );
     SERIAL_ECHOLN("");
 #ifdef DELTA
     SERIAL_ECHO_START;
     if (strncmp(ver,stored_ver,3) == 0)
     {
         // version number match
-        EEPROM_READ_VAR(i,axis_steps_per_unit);  
+        EEPROM_READ_VAR(i,axis_steps_per_unit);
         EEPROM_READ_VAR(i,max_feedrate);  
         EEPROM_READ_VAR(i,max_acceleration_units_per_sq_second);
         
         EEPROM_READ_VAR(i,max_xy_jerk);
         EEPROM_READ_VAR(i,max_z_jerk);
         EEPROM_READ_VAR(i,max_e_jerk);
-        EEPROM_READ_VAR(i,add_homeing);
+        EEPROM_READ_VAR(i,add_homing);
         #ifdef DELTA
 		EEPROM_READ_VAR(i,endstop_adj);
 		EEPROM_READ_VAR(i,delta_radius);
         int lcd_contrast;
         #endif
         EEPROM_READ_VAR(i,lcd_contrast);
+		#ifdef SCARA
+		EEPROM_READ_VAR(i,axis_scaling);
+		#endif
 
 		// Call updatePID (similar to when we have processed M301)
 		updatePID();
         axis_steps_per_unit[i]=tmp1[i];  
         max_feedrate[i]=tmp2[i];  
         max_acceleration_units_per_sq_second[i]=tmp3[i];
+		#ifdef SCARA
+		axis_scaling[i]=1;
+		#endif
     }
     
     // steps per sq second need to be updated to agree with the units per sq second
     max_xy_jerk=DEFAULT_XYJERK;
     max_z_jerk=DEFAULT_ZJERK;
     max_e_jerk=DEFAULT_EJERK;
-    add_homeing[0] = add_homeing[1] = add_homeing[2] = 0;
+    add_homing[0] = add_homing[1] = add_homing[2] = 0;
 #ifdef DELTA
 	endstop_adj[0] = endstop_adj[1] = endstop_adj[2] = 0;
 	delta_radius= DELTA_RADIUS;

Marlin/Marlin.h

 void calculate_delta(float cartesian[3]);
 extern float delta[3];
 #endif
+#ifdef SCARA
+void calculate_delta(float cartesian[3]);
+void calculate_SCARA_forward_Transform(float f_scara[3]);
+#endif
 void prepare_move();
 void kill();
 void Stop();
 extern int extruder_multiply[EXTRUDERS]; // sets extrude multiply factor (in percent) for each extruder individually
 extern float volumetric_multiplier[EXTRUDERS]; // reciprocal of cross-sectional area of filament (in square millimeters), stored this way to reduce computational burden in planner
 extern float current_position[NUM_AXIS] ;
-extern float add_homeing[3];
+extern float add_homing[3];
 #ifdef DELTA
 extern float endstop_adj[3];
 extern float delta_radius;
 extern float delta_segments_per_second;
 void recalc_delta_settings(float radius, float diagonal_rod);
 #endif
+#ifdef SCARA
+extern float axis_scaling[3];  // Build size scaling
+#endif
 extern float min_pos[3];
 extern float max_pos[3];
 extern bool axis_known_position[3];

Marlin/MarlinSerial.cpp

   bool useU2X = true;
 
 #if F_CPU == 16000000UL && SERIAL_PORT == 0
-  // hard coded exception for compatibility with the bootloader shipped
+  // hard-coded exception for compatibility with the bootloader shipped
   // with the Duemilanove and previous boards and the firmware on the 8U2
   // on the Uno and Mega 2560.
   if (baud == 57600) {

Marlin/example_configurations/SCARA/Configuration.h

+#ifndef CONFIGURATION_H
+#define CONFIGURATION_H
+
+// This configuration file contains the basic settings.
+// Advanced settings can be found in Configuration_adv.h
+// BASIC SETTINGS: select your board type, temperature sensor type, axis scaling, and endstop configuration
+
+//===========================================================================
+//========================= SCARA Settings ==================================
+//===========================================================================
+// SCARA-mode for Marlin has been developed by QHARLEY in ZA in 2012/2013. Implemented
+// and slightly reworked by JCERNY in 06/2014 with the goal to bring it into Master-Branch
+// QHARLEYS Autobedlevelling has not been ported, because Marlin has now Bed-levelling
+// You might need Z-Min endstop on SCARA-Printer to use this feature. Actually untested!
+// Uncomment to use Morgan scara mode
+#define SCARA  
+#define scara_segments_per_second 200 //careful, two much will decrease performance...
+// Length of inner support arm
+#define Linkage_1 150 //mm      Preprocessor cannot handle decimal point...
+// Length of outer support arm     Measure arm lengths precisely and enter 
+#define Linkage_2 150 //mm    
+
+// SCARA tower offset (position of Tower relative to bed zero position) 
+// This needs to be reasonably accurate as it defines the printbed position in the SCARA space.
+#define SCARA_offset_x 100 //mm   
+#define SCARA_offset_y -56 //mm
+#define SCARA_RAD2DEG 57.2957795  // to convert RAD to degrees
+
+#define THETA_HOMING_OFFSET 0	//calculatated from Calibration Guide and command M360 / M114 see picture in http://reprap.harleystudio.co.za/?page_id=1073
+#define PSI_HOMING_OFFSET 0  // calculatated from Calibration Guide and command M364 / M114 see picture in http://reprap.harleystudio.co.za/?page_id=1073
+
+//some helper variables to make kinematics faster
+#define L1_2 sq(Linkage_1) // do not change
+#define L2_2 sq(Linkage_2) // do not change
+
+//===========================================================================
+//========================= SCARA Settings end ==================================
+//===========================================================================
+
+// User-specified version info of this build to display in [Pronterface, etc] terminal window during
+// startup. Implementation of an idea by Prof Braino to inform user that any changes made to this
+// build by the user have been successfully uploaded into firmware.
+#define STRING_VERSION_CONFIG_H __DATE__ " " __TIME__ // build date and time
+#define STRING_CONFIG_H_AUTHOR "(none, default config)" // Who made the changes.
+
+// SERIAL_PORT selects which serial port should be used for communication with the host.
+// This allows the connection of wireless adapters (for instance) to non-default port pins.
+// Serial port 0 is still used by the Arduino bootloader regardless of this setting.
+#define SERIAL_PORT 0
+
+// This determines the communication speed of the printer
+// This determines the communication speed of the printer
+#define BAUDRATE 250000
+
+// This enables the serial port associated to the Bluetooth interface
+//#define BTENABLED              // Enable BT interface on AT90USB devices
+
+
+//// The following define selects which electronics board you have. Please choose the one that matches your setup
+// 10 = Gen7 custom (Alfons3 Version) "https://github.com/Alfons3/Generation_7_Electronics"
+// 11 = Gen7 v1.1, v1.2 = 11
+// 12 = Gen7 v1.3
+// 13 = Gen7 v1.4
+// 131 = OpenHardware.co.za custom Gen7 electronics
+// 2  = Cheaptronic v1.0
+// 20 = Sethi 3D_1
+// 3  = MEGA/RAMPS up to 1.2 = 3
+// 33 = RAMPS 1.3 / 1.4 (Power outputs: Extruder, Fan, Bed)
+// 34 = RAMPS 1.3 / 1.4 (Power outputs: Extruder0, Extruder1, Bed)
+// 35 = RAMPS 1.3 / 1.4 (Power outputs: Extruder, Fan, Fan)
+// 4  = Duemilanove w/ ATMega328P pin assignment
+// 5  = Gen6
+// 51 = Gen6 deluxe
+// 6  = Sanguinololu < 1.2
+// 62 = Sanguinololu 1.2 and above
+// 63 = Melzi
+// 64 = STB V1.1
+// 65 = Azteeg X1
+// 66 = Melzi with ATmega1284 (MaKr3d version)
+// 67 = Azteeg X3
+// 68 = Azteeg X3 Pro
+// 7  = Ultimaker
+// 71 = Ultimaker (Older electronics. Pre 1.5.4. This is rare)
+// 72 = Ultimainboard 2.x (Uses TEMP_SENSOR 20)
+// 77 = 3Drag Controller
+// 8  = Teensylu
+// 80 = Rumba
+// 81 = Printrboard (AT90USB1286)
+// 82 = Brainwave (AT90USB646)
+// 83 = SAV Mk-I (AT90USB1286)
+// 84 = Teensy++2.0 (AT90USB1286) // CLI compile: DEFINES=AT90USBxx_TEENSYPP_ASSIGNMENTS HARDWARE_MOTHERBOARD=84  make
+// 9  = Gen3+
+// 70 = Megatronics
+// 701= Megatronics v2.0
+// 702= Minitronics v1.0
+// 90 = Alpha OMCA board
+// 91 = Final OMCA board
+// 301= Rambo
+// 21 = Elefu Ra Board (v3)
+// 88 = 5DPrint D8 Driver Board
+
+#ifndef MOTHERBOARD
+#define MOTHERBOARD 33
+#endif
+
+// Define this to set a custom name for your generic Mendel,
+// #define CUSTOM_MENDEL_NAME "This Mendel"
+
+// Define this to set a unique identifier for this printer, (Used by some programs to differentiate between machines)
+// You can use an online service to generate a random UUID. (eg http://www.uuidgenerator.net/version4)
+// #define MACHINE_UUID "00000000-0000-0000-0000-000000000000"
+
+// This defines the number of extruders
+#define EXTRUDERS 1
+
+//// The following define selects which power supply you have. Please choose the one that matches your setup
+// 1 = ATX
+// 2 = X-Box 360 203Watts (the blue wire connected to PS_ON and the red wire to VCC)
+
+#define POWER_SUPPLY 1
+
+// Define this to have the electronics keep the power supply off on startup. If you don't know what this is leave it.
+// #define PS_DEFAULT_OFF
+
+//===========================================================================
+//=============================Thermal Settings  ============================
+//===========================================================================
+//
+//--NORMAL IS 4.7kohm PULLUP!-- 1kohm pullup can be used on hotend sensor, using correct resistor and table
+//
+//// Temperature sensor settings:
+// -2 is thermocouple with MAX6675 (only for sensor 0)
+// -1 is thermocouple with AD595
+// 0 is not used
+// 1 is 100k thermistor - best choice for EPCOS 100k (4.7k pullup)
+// 2 is 200k thermistor - ATC Semitec 204GT-2 (4.7k pullup)
+// 3 is Mendel-parts thermistor (4.7k pullup)
+// 4 is 10k thermistor !! do not use it for a hotend. It gives bad resolution at high temp. !!
+// 5 is 100K thermistor - ATC Semitec 104GT-2 (Used in ParCan & J-Head) (4.7k pullup)
+// 6 is 100k EPCOS - Not as accurate as table 1 (created using a fluke thermocouple) (4.7k pullup)
+// 7 is 100k Honeywell thermistor 135-104LAG-J01 (4.7k pullup)
+// 71 is 100k Honeywell thermistor 135-104LAF-J01 (4.7k pullup)
+// 8 is 100k 0603 SMD Vishay NTCS0603E3104FXT (4.7k pullup)
+// 9 is 100k GE Sensing AL03006-58.2K-97-G1 (4.7k pullup)
+// 10 is 100k RS thermistor 198-961 (4.7k pullup)
+// 11 is 100k beta 3950 1% thermistor (4.7k pullup)
+// 12 is 100k 0603 SMD Vishay NTCS0603E3104FXT (4.7k pullup) (calibrated for Makibox hot bed)
+// 20 is the PT100 circuit found in the Ultimainboard V2.x
+// 60 is 100k Maker's Tool Works Kapton Bed Thermistor beta=3950
+//
+//    1k ohm pullup tables - This is not normal, you would have to have changed out your 4.7k for 1k
+//                          (but gives greater accuracy and more stable PID)
+// 51 is 100k thermistor - EPCOS (1k pullup)
+// 52 is 200k thermistor - ATC Semitec 204GT-2 (1k pullup)
+// 55 is 100k thermistor - ATC Semitec 104GT-2 (Used in ParCan & J-Head) (1k pullup)
+//
+// 1047 is Pt1000 with 4k7 pullup
+// 1010 is Pt1000 with 1k pullup (non standard)
+// 147 is Pt100 with 4k7 pullup
+// 110 is Pt100 with 1k pullup (non standard)
+
+#define TEMP_SENSOR_0 1
+#define TEMP_SENSOR_1 0
+#define TEMP_SENSOR_2 0
+#define TEMP_SENSOR_BED 1
+
+// This makes temp sensor 1 a redundant sensor for sensor 0. If the temperatures difference between these sensors is to high the print will be aborted.
+//#define TEMP_SENSOR_1_AS_REDUNDANT
+#define MAX_REDUNDANT_TEMP_SENSOR_DIFF 10
+
+// Actual temperature must be close to target for this long before M109 returns success
+#define TEMP_RESIDENCY_TIME 3  // (seconds)
+#define TEMP_HYSTERESIS 2       // (degC) range of +/- temperatures considered "close" to the target one
+#define TEMP_WINDOW     1       // (degC) Window around target to start the residency timer x degC early.
+
+// The minimal temperature defines the temperature below which the heater will not be enabled It is used
+// to check that the wiring to the thermistor is not broken.
+// Otherwise this would lead to the heater being powered on all the time.
+#define HEATER_0_MINTEMP 5
+#define HEATER_1_MINTEMP 5
+#define HEATER_2_MINTEMP 5
+#define BED_MINTEMP 5
+
+// When temperature exceeds max temp, your heater will be switched off.
+// This feature exists to protect your hotend from overheating accidentally, but *NOT* from thermistor short/failure!
+// You should use MINTEMP for thermistor short/failure protection.
+#define HEATER_0_MAXTEMP 275
+#define HEATER_1_MAXTEMP 275
+#define HEATER_2_MAXTEMP 275
+#define BED_MAXTEMP 150
+
+// If your bed has low resistance e.g. .6 ohm and throws the fuse you can duty cycle it to reduce the
+// average current. The value should be an integer and the heat bed will be turned on for 1 interval of
+// HEATER_BED_DUTY_CYCLE_DIVIDER intervals.
+//#define HEATER_BED_DUTY_CYCLE_DIVIDER 4
+
+// If you want the M105 heater power reported in watts, define the BED_WATTS, and (shared for all extruders) EXTRUDER_WATTS
+#define EXTRUDER_WATTS (2*2/5.9) //  P=I^2/R
+#define BED_WATTS (5.45*5.45/2.2)      // P=I^2/R
+
+// PID settings:
+// Comment the following line to disable PID and enable bang-bang.
+#define PIDTEMP
+#define BANG_MAX 255 // limits current to nozzle while in bang-bang mode; 255=full current
+#define PID_MAX 255 // limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
+#ifdef PIDTEMP
+  //#define PID_DEBUG // Sends debug data to the serial port.
+  //#define PID_OPENLOOP 1 // Puts PID in open loop. M104/M140 sets the output power from 0 to PID_MAX
+  #define PID_FUNCTIONAL_RANGE 20 // If the temperature difference between the target temperature and the actual temperature
+                                  // is more then PID_FUNCTIONAL_RANGE then the PID will be shut off and the heater will be set to min/max.
+  #define PID_INTEGRAL_DRIVE_MAX 255  //limit for the integral term
+  #define K1 0.95 //smoothing factor within the PID
+  #define PID_dT ((OVERSAMPLENR * 8.0)/(F_CPU / 64.0 / 256.0)) //sampling period of the temperature routine
+
+// If you are using a pre-configured hotend then you can use one of the value sets by uncommenting it
+// Ultimaker
+  //  #define  DEFAULT_Kp 22.2
+  //  #define  DEFAULT_Ki 1.08
+   // #define  DEFAULT_Kd 114
+  
+ // Jhead MK5: From Autotune  
+  //  #define  DEFAULT_Kp 20.92
+   // #define  DEFAULT_Ki 1.51
+  //  #define  DEFAULT_Kd 72.34
+    
+ //Merlin Hotend: From Autotune  
+    #define  DEFAULT_Kp 24.5
+    #define  DEFAULT_Ki 1.72
+    #define  DEFAULT_Kd 87.73
+
+// MakerGear
+//    #define  DEFAULT_Kp 7.0
+//    #define  DEFAULT_Ki 0.1
+//    #define  DEFAULT_Kd 12
+
+// Mendel Parts V9 on 12V
+  //  #define  DEFAULT_Kp 63.0
+   // #define  DEFAULT_Ki 2.25
+   // #define  DEFAULT_Kd 440
+#endif // PIDTEMP
+
+// Bed Temperature Control
+// Select PID or bang-bang with PIDTEMPBED. If bang-bang, BED_LIMIT_SWITCHING will enable hysteresis
+//
+// Uncomment this to enable PID on the bed. It uses the same frequency PWM as the extruder.
+// If your PID_dT above is the default, and correct for your hardware/configuration, that means 7.689Hz,
+// which is fine for driving a square wave into a resistive load and does not significantly impact you FET heating.
+// This also works fine on a Fotek SSR-10DA Solid State Relay into a 250W heater.
+// If your configuration is significantly different than this and you don't understand the issues involved, you probably
+// shouldn't use bed PID until someone else verifies your hardware works.
+// If this is enabled, find your own PID constants below.
+#define PIDTEMPBED
+//
+#define BED_LIMIT_SWITCHING
+
+// This sets the max power delivered to the bed, and replaces the HEATER_BED_DUTY_CYCLE_DIVIDER option.
+// all forms of bed control obey this (PID, bang-bang, bang-bang with hysteresis)
+// setting this to anything other than 255 enables a form of PWM to the bed just like HEATER_BED_DUTY_CYCLE_DIVIDER did,
+// so you shouldn't use it unless you are OK with PWM on your bed.  (see the comment on enabling PIDTEMPBED)
+#define MAX_BED_POWER 255 // limits duty cycle to bed; 255=full current
+
+#ifdef PIDTEMPBED
+//120v 250W silicone heater into 4mm borosilicate (MendelMax 1.5+)
+//from FOPDT model - kp=.39 Tp=405 Tdead=66, Tc set to 79.2, aggressive factor of .15 (vs .1, 1, 10)
+  //  #define  DEFAULT_bedKp 10.00
+  //  #define  DEFAULT_bedKi .023
+  //  #define  DEFAULT_bedKd 305.4
+
+//120v 250W silicone heater into 4mm borosilicate (MendelMax 1.5+)
+//from pidautotune
+//    #define  DEFAULT_bedKp 97.1
+//    #define  DEFAULT_bedKi 1.41
+//    #define  DEFAULT_bedKd 1675.16
+
+//12v Heatbed Mk3 12V in parallel
+//from pidautotune
+    #define  DEFAULT_bedKp 630.14
+    #define  DEFAULT_bedKi 121.71
+    #define  DEFAULT_bedKd 815.64
+    
+// FIND YOUR OWN: "M303 E-1 C8 S90" to run autotune on the bed at 90 degreesC for 8 cycles.
+#endif // PIDTEMPBED
+
+
+
+//this prevents dangerous Extruder moves, i.e. if the temperature is under the limit
+//can be software-disabled for whatever purposes by
+//#define PREVENT_DANGEROUS_EXTRUDE
+//if PREVENT_DANGEROUS_EXTRUDE is on, you can still disable (uncomment) very long bits of extrusion separately.
+#define PREVENT_LENGTHY_EXTRUDE
+
+#define EXTRUDE_MINTEMP 150
+#define EXTRUDE_MAXLENGTH (X_MAX_LENGTH+Y_MAX_LENGTH) //prevent extrusion of very large distances.
+
+/*================== Thermal Runaway Protection ==============================
+This is a feature to protect your printer from burn up in flames if it has
+a thermistor coming off place (this happened to a friend of mine recently and
+motivated me writing this feature).
+
+The issue: If a thermistor come off, it will read a lower temperature than actual.
+The system will turn the heater on forever, burning up the filament and anything
+else around.
+
+After the temperature reaches the target for the first time, this feature will 
+start measuring for how long the current temperature stays below the target 
+minus _HYSTERESIS (set_temperature - THERMAL_RUNAWAY_PROTECTION_HYSTERESIS).
+
+If it stays longer than _PERIOD, it means the thermistor temperature
+cannot catch up with the target, so something *may be* wrong. Then, to be on the
+safe side, the system will he halt.
+
+Bear in mind the count down will just start AFTER the first time the 
+thermistor temperature is over the target, so you will have no problem if
+your extruder heater takes 2 minutes to hit the target on heating.
+
+*/
+// If you want to enable this feature for all your extruder heaters,
+// uncomment the 2 defines below:
+
+// Parameters for all extruder heaters
+//#define THERMAL_RUNAWAY_PROTECTION_PERIOD 40 //in seconds
+//#define THERMAL_RUNAWAY_PROTECTION_HYSTERESIS 4 // in degree Celsius
+
+// If you want to enable this feature for your bed heater,
+// uncomment the 2 defines below:
+
+// Parameters for the bed heater
+//#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
+//#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
+//===========================================================================
+
+//===========================================================================
+//=============================Mechanical Settings===========================
+//===========================================================================
+
+// Uncomment the following line to enable CoreXY kinematics
+// #define COREXY
+
+// coarse Endstop Settings
+//#define ENDSTOPPULLUPS // Comment this out (using // at the start of the line) to disable the endstop pullup resistors
+
+#ifndef ENDSTOPPULLUPS
+  // fine endstop settings: Individual pullups. will be ignored if ENDSTOPPULLUPS is defined
+  // #define ENDSTOPPULLUP_XMAX
+  // #define ENDSTOPPULLUP_YMAX
+   #define ENDSTOPPULLUP_ZMAX  // open pin, inverted
+   #define ENDSTOPPULLUP_XMIN  // open pin, inverted
+   #define ENDSTOPPULLUP_YMIN  // open pin, inverted
+  // #define ENDSTOPPULLUP_ZMIN
+#endif
+
+#ifdef ENDSTOPPULLUPS
+  #define ENDSTOPPULLUP_XMAX
+  #define ENDSTOPPULLUP_YMAX
+  #define ENDSTOPPULLUP_ZMAX
+  #define ENDSTOPPULLUP_XMIN
+  #define ENDSTOPPULLUP_YMIN
+  #define ENDSTOPPULLUP_ZMIN
+#endif
+
+// The pullups are needed if you directly connect a mechanical endswitch between the signal and ground pins.
+const bool X_MIN_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
+const bool Y_MIN_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
+const bool Z_MIN_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
+const bool X_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
+const bool Y_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
+const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
+//#define DISABLE_MAX_ENDSTOPS
+//#define DISABLE_MIN_ENDSTOPS
+
+// Disable max endstops for compatibility with endstop checking routine
+#if defined(COREXY) && !defined(DISABLE_MAX_ENDSTOPS)
+  #define DISABLE_MAX_ENDSTOPS
+#endif
+
+// For Inverting Stepper Enable Pins (Active Low) use 0, Non Inverting (Active High) use 1
+#define X_ENABLE_ON 0
+#define Y_ENABLE_ON 0
+#define Z_ENABLE_ON 0
+#define E_ENABLE_ON 0 // For all extruders
+
+// Disables axis when it's not being used.
+#define DISABLE_X false
+#define DISABLE_Y false
+#define DISABLE_Z false
+#define DISABLE_E false // For all extruders
+#define DISABLE_INACTIVE_EXTRUDER true //disable only inactive extruders and keep active extruder enabled
+
+#define INVERT_X_DIR false    // for Mendel set to false, for Orca set to true
+#define INVERT_Y_DIR false    // for Mendel set to true, for Orca set to false
+#define INVERT_Z_DIR true     // for Mendel set to false, for Orca set to true
+#define INVERT_E0_DIR false   // for direct drive extruder v9 set to true, for geared extruder set to false
+#define INVERT_E1_DIR false    // for direct drive extruder v9 set to true, for geared extruder set to false
+#define INVERT_E2_DIR false   // for direct drive extruder v9 set to true, for geared extruder set to false
+
+// ENDSTOP SETTINGS:
+// Sets direction of endstop	s when homing; 1=MAX, -1=MIN
+#define X_HOME_DIR 1
+#define Y_HOME_DIR 1
+#define Z_HOME_DIR -1
+
+#define min_software_endstops true // If true, axis won't move to coordinates less than HOME_POS.
+#define max_software_endstops true  // If true, axis won't move to coordinates greater than the defined lengths below.
+
+// Travel limits after homing
+#define X_MAX_POS 200
+#define X_MIN_POS 0
+#define Y_MAX_POS 200
+#define Y_MIN_POS 0
+#define Z_MAX_POS 225
+#define Z_MIN_POS MANUAL_Z_HOME_POS
+
+#define X_MAX_LENGTH (X_MAX_POS - X_MIN_POS)
+#define Y_MAX_LENGTH (Y_MAX_POS - Y_MIN_POS)
+#define Z_MAX_LENGTH (Z_MAX_POS - Z_MIN_POS)
+//============================= Bed Auto Leveling ===========================
+
+//#define ENABLE_AUTO_BED_LEVELING // Delete the comment to enable (remove // at the start of the line)
+
+#ifdef ENABLE_AUTO_BED_LEVELING
+
+// There are 2 different ways to pick the X and Y locations to probe:
+
+//  - "grid" mode
+//    Probe every point in a rectangular grid
+//    You must specify the rectangle, and the density of sample points
+//    This mode is preferred because there are more measurements.
+//    It used to be called ACCURATE_BED_LEVELING but "grid" is more descriptive
+
+//  - "3-point" mode
+//    Probe 3 arbitrary points on the bed (that aren't colinear)
+//    You must specify the X & Y coordinates of all 3 points
+
+  #define AUTO_BED_LEVELING_GRID
+  // with AUTO_BED_LEVELING_GRID, the bed is sampled in a
+  // AUTO_BED_LEVELING_GRID_POINTSxAUTO_BED_LEVELING_GRID_POINTS grid
+  // and least squares solution is calculated
+  // Note: this feature occupies 10'206 byte
+  #ifdef AUTO_BED_LEVELING_GRID
+
+    // set the rectangle in which to probe
+    #define LEFT_PROBE_BED_POSITION 15
+    #define RIGHT_PROBE_BED_POSITION 170
+    #define BACK_PROBE_BED_POSITION 180
+    #define FRONT_PROBE_BED_POSITION 20
+
+     // set the number of grid points per dimension
+     // I wouldn't see a reason to go above 3 (=9 probing points on the bed)
+    #define AUTO_BED_LEVELING_GRID_POINTS 2
+
+
+  #else  // not AUTO_BED_LEVELING_GRID
+    // with no grid, just probe 3 arbitrary points.  A simple cross-product
+    // is used to esimate the plane of the print bed
+
+      #define ABL_PROBE_PT_1_X 15
+      #define ABL_PROBE_PT_1_Y 180
+      #define ABL_PROBE_PT_2_X 15
+      #define ABL_PROBE_PT_2_Y 20
+      #define ABL_PROBE_PT_3_X 170
+      #define ABL_PROBE_PT_3_Y 20
+
+  #endif // AUTO_BED_LEVELING_GRID
+
+
+  // these are the offsets to the probe relative to the extruder tip (Hotend - Probe)
+  #define X_PROBE_OFFSET_FROM_EXTRUDER -25
+  #define Y_PROBE_OFFSET_FROM_EXTRUDER -29
+  #define Z_PROBE_OFFSET_FROM_EXTRUDER -12.35
+
+  //#define Z_RAISE_BEFORE_HOMING 4       // (in mm) Raise Z before homing (G28) for Probe Clearance.
+                                        // Be sure you have this distance over your Z_MAX_POS in case
+
+  #define XY_TRAVEL_SPEED 8000         // X and Y axis travel speed between probes, in mm/min
+
+  #define Z_RAISE_BEFORE_PROBING 15    //How much the extruder will be raised before traveling to the first probing point.
+  #define Z_RAISE_BETWEEN_PROBINGS 5  //How much the extruder will be raised when traveling from between next probing points
+
+
+  //If defined, the Probe servo will be turned on only during movement and then turned off to avoid jerk
+  //The value is the delay to turn the servo off after powered on - depends on the servo speed; 300ms is good value, but you can try lower it.
+  // You MUST HAVE the SERVO_ENDSTOPS defined to use here a value higher than zero otherwise your code will not compile.
+
+//  #define PROBE_SERVO_DEACTIVATION_DELAY 300
+
+
+//If you have enabled the Bed Auto Leveling and are using the same Z Probe for Z Homing,
+//it is highly recommended you let this Z_SAFE_HOMING enabled!!!
+
+ // #define Z_SAFE_HOMING   // This feature is meant to avoid Z homing with probe outside the bed area.
+                          // When defined, it will:
+                          // - Allow Z homing only after X and Y homing AND stepper drivers still enabled
+                          // - If stepper drivers timeout, it will need X and Y homing again before Z homing
+                          // - Position the probe in a defined XY point before Z Homing when homing all axis (G28)
+                          // - Block Z homing only when the probe is outside bed area.
+
+  #ifdef Z_SAFE_HOMING
+
+    #define Z_SAFE_HOMING_X_POINT (X_MAX_LENGTH/2)    // X point for Z homing when homing all axis (G28)
+    #define Z_SAFE_HOMING_Y_POINT (Y_MAX_LENGTH/2)    // Y point for Z homing when homing all axis (G28)
+
+  #endif
+
+#endif // ENABLE_AUTO_BED_LEVELING
+
+
+// The position of the homing switches
+#define MANUAL_HOME_POSITIONS  // If defined, MANUAL_*_HOME_POS below will be used
+//#define BED_CENTER_AT_0_0  // If defined, the center of the bed is at (X=0, Y=0)
+
+//Manual homing switch locations:
+// For deltabots this means top and center of the Cartesian print volume.
+// For SCARA: Offset between HomingPosition and Bed X=0 / Y=0
+#define MANUAL_X_HOME_POS -22.
+#define MANUAL_Y_HOME_POS -52.
+#define MANUAL_Z_HOME_POS 0.1  // Distance between nozzle and print surface after homing.
+
+
+//// MOVEMENT SETTINGS
+#define NUM_AXIS 4 // The axis order in all axis related arrays is X, Y, Z, E
+#define HOMING_FEEDRATE {40*60, 40*60, 10*60, 0}  // set the homing speeds (mm/min)
+
+// default settings
+
+#define DEFAULT_AXIS_STEPS_PER_UNIT   {103.69,106.65,200/1.25,1000}  // default steps per unit for SCARA
+#define DEFAULT_MAX_FEEDRATE          {300, 300, 30, 25}    // (mm/sec)
+#define DEFAULT_MAX_ACCELERATION      {300,300,20,1000}    // X, Y, Z, E maximum start speed for accelerated moves. E default values are good for Skeinforge 40+, for older versions raise them a lot.
+
+#define DEFAULT_ACCELERATION          400    // X, Y, Z and E max acceleration in mm/s^2 for printing moves
+#define DEFAULT_RETRACT_ACCELERATION  2000  // X, Y, Z and E max acceleration in mm/s^2 for retracts
+
+// Offset of the extruders (uncomment if using more than one and relying on firmware to position when changing).
+// The offset has to be X=0, Y=0 for extruder 0 hotend (default extruder).
+// For the other hotends it is their distance from the extruder 0 hotend.
+// #define EXTRUDER_OFFSET_X {0.0, 20.00} // (in mm) for each extruder, offset of the hotend on the X axis
+// #define EXTRUDER_OFFSET_Y {0.0, 5.00}  // (in mm) for each extruder, offset of the hotend on the Y axis
+
+// The speed change that does not require acceleration (i.e. the software might assume it can be done instantaneously)
+#define DEFAULT_XYJERK                5    // (mm/sec)
+#define DEFAULT_ZJERK                 0.4    // (mm/sec)
+#define DEFAULT_EJERK                 3    // (mm/sec)
+
+//===========================================================================
+//=============================Additional Features===========================
+//===========================================================================
+
+// Custom M code points
+//#define CUSTOM_M_CODES
+#ifdef CUSTOM_M_CODES
+  #define CUSTOM_M_CODE_SET_Z_PROBE_OFFSET 851
+  #define Z_PROBE_OFFSET_RANGE_MIN -15
+  #define Z_PROBE_OFFSET_RANGE_MAX -5
+#endif
+
+
+// EEPROM
+// The microcontroller can store settings in the EEPROM, e.g. max velocity...
+// M500 - stores parameters in EEPROM
+// M501 - reads parameters from EEPROM (if you need reset them after you changed them temporarily).
+// M502 - reverts to the default "factory settings".  You still need to store them in EEPROM afterwards if you want to.
+//define this to enable EEPROM support
+//#define EEPROM_SETTINGS
+//to disable EEPROM Serial responses and decrease program space by ~1700 byte: comment this out:
+// please keep turned on if you can.
+#define EEPROM_CHITCHAT
+
+// Preheat Constants
+#define PLA_PREHEAT_HOTEND_TEMP 180
+#define PLA_PREHEAT_HPB_TEMP 70
+#define PLA_PREHEAT_FAN_SPEED 255   // Insert Value between 0 and 255
+
+#define ABS_PREHEAT_HOTEND_TEMP 240
+#define ABS_PREHEAT_HPB_TEMP 100
+#define ABS_PREHEAT_FAN_SPEED 255   // Insert Value between 0 and 255
+
+//LCD and SD support
+//#define ULTRA_LCD  //general LCD support, also 16x2
+//#define DOGLCD  // Support for SPI LCD 128x64 (Controller ST7565R graphic Display Family)
+//#define SDSUPPORT // Enable SD Card Support in Hardware Console
+//#define SDSLOW // Use slower SD transfer mode (not normally needed - uncomment if you're getting volume init error)
+//#define SD_CHECK_AND_RETRY // Use CRC checks and retries on the SD communication
+//#define ENCODER_PULSES_PER_STEP 1 // Increase if you have a high resolution encoder
+//#define ENCODER_STEPS_PER_MENU_ITEM 5 // Set according to ENCODER_PULSES_PER_STEP or your liking
+//#define ULTIMAKERCONTROLLER //as available from the Ultimaker online store.
+//#define ULTIPANEL  //the UltiPanel as on Thingiverse
+//#define LCD_FEEDBACK_FREQUENCY_HZ 1000	// this is the tone frequency the buzzer plays when on UI feedback. ie Screen Click
+//#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100 // the duration the buzzer plays the UI feedback sound. ie Screen Click
+
+// The MaKr3d Makr-Panel with graphic controller and SD support
+// http://reprap.org/wiki/MaKr3d_MaKrPanel
+//#define MAKRPANEL
+
+// The RepRapDiscount Smart Controller (white PCB)
+// http://reprap.org/wiki/RepRapDiscount_Smart_Controller
+//#define REPRAP_DISCOUNT_SMART_CONTROLLER
+
+// The GADGETS3D G3D LCD/SD Controller (blue PCB)
+// http://reprap.org/wiki/RAMPS_1.3/1.4_GADGETS3D_Shield_with_Panel
+//#define G3D_PANEL
+
+// The RepRapDiscount FULL GRAPHIC Smart Controller (quadratic white PCB)
+// http://reprap.org/wiki/RepRapDiscount_Full_Graphic_Smart_Controller
+//
+// ==> REMEMBER TO INSTALL U8glib to your ARDUINO library folder: http://code.google.com/p/u8glib/wiki/u8glib
+//#define REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER
+
+// The RepRapWorld REPRAPWORLD_KEYPAD v1.1
+// http://reprapworld.com/?products_details&products_id=202&cPath=1591_1626
+//#define REPRAPWORLD_KEYPAD
+//#define REPRAPWORLD_KEYPAD_MOVE_STEP 10.0 // how much should be moved when a key is pressed, eg 10.0 means 10mm per click
+
+// The Elefu RA Board Control Panel
+// http://www.elefu.com/index.php?route=product/product&product_id=53
+// REMEMBER TO INSTALL LiquidCrystal_I2C.h in your ARUDINO library folder: https://github.com/kiyoshigawa/LiquidCrystal_I2C
+//#define RA_CONTROL_PANEL
+
+//automatic expansion
+#if defined (MAKRPANEL)
+ #define DOGLCD
+ #define SDSUPPORT
+ #define ULTIPANEL
+ #define NEWPANEL
+ #define DEFAULT_LCD_CONTRAST 17
+#endif
+
+#if defined (REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
+ #define DOGLCD
+ #define U8GLIB_ST7920
+ #define REPRAP_DISCOUNT_SMART_CONTROLLER
+#endif
+
+#if defined(ULTIMAKERCONTROLLER) || defined(REPRAP_DISCOUNT_SMART_CONTROLLER) || defined(G3D_PANEL)
+ #define ULTIPANEL
+ #define NEWPANEL
+#endif
+
+#if defined(REPRAPWORLD_KEYPAD)
+  #define NEWPANEL
+  #define ULTIPANEL
+#endif
+#if defined(RA_CONTROL_PANEL)
+ #define ULTIPANEL
+ #define NEWPANEL
+ #define LCD_I2C_TYPE_PCA8574
+ #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
+#endif
+
+//I2C PANELS
+
+//#define LCD_I2C_SAINSMART_YWROBOT
+#ifdef LCD_I2C_SAINSMART_YWROBOT
+  // This uses the LiquidCrystal_I2C library ( https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/Home )
+  // Make sure it is placed in the Arduino libraries directory.
+  #define LCD_I2C_TYPE_PCF8575
+  #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
+  #define NEWPANEL
+  #define ULTIPANEL
+#endif
+
+// PANELOLU2 LCD with status LEDs, separate encoder and click inputs
+//#define LCD_I2C_PANELOLU2
+#ifdef LCD_I2C_PANELOLU2
+  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
+  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
+  // (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
+  // Note: The PANELOLU2 encoder click input can either be directly connected to a pin
+  //       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
+  #define LCD_I2C_TYPE_MCP23017
+  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
+  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD
+  #define NEWPANEL
+  #define ULTIPANEL
+
+  #ifndef ENCODER_PULSES_PER_STEP
+	#define ENCODER_PULSES_PER_STEP 4
+  #endif
+
+  #ifndef ENCODER_STEPS_PER_MENU_ITEM
+	#define ENCODER_STEPS_PER_MENU_ITEM 1
+  #endif
+
+
+  #ifdef LCD_USE_I2C_BUZZER
+	#define LCD_FEEDBACK_FREQUENCY_HZ 1000
+	#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100
+  #endif
+
+#endif
+
+// Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs
+//#define LCD_I2C_VIKI
+#ifdef LCD_I2C_VIKI
+  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
+  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
+  // Note: The pause/stop/resume LCD button pin should be connected to the Arduino
+  //       BTN_ENC pin (or set BTN_ENC to -1 if not used)
+  #define LCD_I2C_TYPE_MCP23017
+  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
+  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD (requires LiquidTWI2 v1.2.3 or later)
+  #define NEWPANEL
+  #define ULTIPANEL
+#endif
+
+// Shift register panels
+// ---------------------
+// 2 wire Non-latching LCD SR from:
+// https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/schematics#!shiftregister-connection
+//#define SR_LCD
+#ifdef SR_LCD
+   #define SR_LCD_2W_NL    // Non latching 2 wire shift register
+   //#define NEWPANEL
+#endif
+
+
+#ifdef ULTIPANEL
+//  #define NEWPANEL  //enable this if you have a click-encoder panel
+  #define SDSUPPORT
+  #define ULTRA_LCD
+  #ifdef DOGLCD // Change number of lines to match the DOG graphic display
+    #define LCD_WIDTH 20
+    #define LCD_HEIGHT 5
+  #else
+    #define LCD_WIDTH 20
+    #define LCD_HEIGHT 4
+  #endif
+#else //no panel but just LCD
+  #ifdef ULTRA_LCD
+  #ifdef DOGLCD // Change number of lines to match the 128x64 graphics display
+    #define LCD_WIDTH 20
+    #define LCD_HEIGHT 5
+  #else
+    #define LCD_WIDTH 16
+    #define LCD_HEIGHT 2
+  #endif
+  #endif
+#endif
+
+// default LCD contrast for dogm-like LCD displays
+#ifdef DOGLCD
+# ifndef DEFAULT_LCD_CONTRAST
+#  define DEFAULT_LCD_CONTRAST 32
+# endif
+#endif
+
+// Increase the FAN pwm frequency. Removes the PWM noise but increases heating in the FET/Arduino
+//#define FAST_PWM_FAN
+
+// Temperature status LEDs that display the hotend and bet temperature.
+// If all hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
+// Otherwise the RED led is on. There is 1C hysteresis.
+//#define TEMP_STAT_LEDS
+
+// Use software PWM to drive the fan, as for the heaters. This uses a very low frequency
+// which is not ass annoying as with the hardware PWM. On the other hand, if this frequency
+// is too low, you should also increment SOFT_PWM_SCALE.
+//#define FAN_SOFT_PWM
+
+// Incrementing this by 1 will double the software PWM frequency,
+// affecting heaters, and the fan if FAN_SOFT_PWM is enabled.
+// However, control resolution will be halved for each increment;
+// at zero value, there are 128 effective control positions.
+#define SOFT_PWM_SCALE 0
+
+// M240  Triggers a camera by emulating a Canon RC-1 Remote
+// Data from: http://www.doc-diy.net/photo/rc-1_hacked/
+// #define PHOTOGRAPH_PIN     23
+
+// SF send wrong arc g-codes when using Arc Point as fillet procedure
+//#define SF_ARC_FIX
+
+// Support for the BariCUDA Paste Extruder.
+//#define BARICUDA
+
+//define BlinkM/CyzRgb Support
+//#define BLINKM
+
+/*********************************************************************\
+* R/C SERVO support
+* Sponsored by TrinityLabs, Reworked by codexmas
+**********************************************************************/
+
+// Number of servos
+//
+// If you select a configuration below, this will receive a default value and does not need to be set manually
+// set it manually if you have more servos than extruders and wish to manually control some
+// leaving it undefined or defining as 0 will disable the servo subsystem
+// If unsure, leave commented / disabled
+//
+//#define NUM_SERVOS 3 // Servo index starts with 0 for M280 command
+
+// Servo Endstops
+//
+// This allows for servo actuated endstops, primary usage is for the Z Axis to eliminate calibration or bed height changes.
+// Use M206 command to correct for switch height offset to actual nozzle height. Store that setting with M500.
+//
+//#define SERVO_ENDSTOPS {-1, -1, 0} // Servo index for X, Y, Z. Disable with -1
+//#define SERVO_ENDSTOP_ANGLES {0,0, 0,0, 70,0} // X,Y,Z Axis Extend and Retract angles
+
+#include "Configuration_adv.h"
+#include "thermistortables.h"
+
+#endif //__CONFIGURATION_H

Marlin/example_configurations/SCARA/Configuration_adv.h

+#ifndef CONFIGURATION_ADV_H
+#define CONFIGURATION_ADV_H
+
+//===========================================================================
+//=============================Thermal Settings  ============================
+//===========================================================================
+
+#ifdef BED_LIMIT_SWITCHING
+  #define BED_HYSTERESIS 2 //only disable heating if T>target+BED_HYSTERESIS and enable heating if T>target-BED_HYSTERESIS
+#endif
+#define BED_CHECK_INTERVAL 3000 //ms between checks in bang-bang control
+
+//// Heating sanity check:
+// This waits for the watch period in milliseconds whenever an M104 or M109 increases the target temperature
+// If the temperature has not increased at the end of that period, the target temperature is set to zero.
+// It can be reset with another M104/M109. This check is also only triggered if the target temperature and the current temperature
+//  differ by at least 2x WATCH_TEMP_INCREASE
+//#define WATCH_TEMP_PERIOD 40000 //40 seconds
+//#define WATCH_TEMP_INCREASE 10  //Heat up at least 10 degree in 20 seconds
+
+#ifdef PIDTEMP
+  // this adds an experimental additional term to the heating power, proportional to the extrusion speed.
+  // if Kc is chosen well, the additional required power due to increased melting should be compensated.
+  #define PID_ADD_EXTRUSION_RATE
+  #ifdef PID_ADD_EXTRUSION_RATE
+    #define  DEFAULT_Kc (1) //heating power=Kc*(e_speed)
+  #endif
+#endif
+
+
+//automatic temperature: The hot end target temperature is calculated by all the buffered lines of gcode.
+//The maximum buffered steps/sec of the extruder motor are called "se".
+//You enter the autotemp mode by a M109 S<mintemp> B<maxtemp> F<factor>
+// the target temperature is set to mintemp+factor*se[steps/sec] and limited by mintemp and maxtemp
+// you exit the value by any M109 without F*
+// Also, if the temperature is set to a value <mintemp, it is not changed by autotemp.
+// on an Ultimaker, some initial testing worked with M109 S215 B260 F1 in the start.gcode
+#define AUTOTEMP
+#ifdef AUTOTEMP
+  #define AUTOTEMP_OLDWEIGHT 0.98
+#endif
+
+//Show Temperature ADC value
+//The M105 command return, besides traditional information, the ADC value read from temperature sensors.
+//#define SHOW_TEMP_ADC_VALUES
+
+//  extruder run-out prevention.
+//if the machine is idle, and the temperature over MINTEMP, every couple of SECONDS some filament is extruded
+//#define EXTRUDER_RUNOUT_PREVENT
+#define EXTRUDER_RUNOUT_MINTEMP 180
+#define EXTRUDER_RUNOUT_SECONDS 30.
+#define EXTRUDER_RUNOUT_ESTEPS 14. //mm filament
+#define EXTRUDER_RUNOUT_SPEED 180.  //extrusion speed
+#define EXTRUDER_RUNOUT_EXTRUDE 100
+
+//These defines help to calibrate the AD595 sensor in case you get wrong temperature measurements.
+//The measured temperature is defined as "actualTemp = (measuredTemp * TEMP_SENSOR_AD595_GAIN) + TEMP_SENSOR_AD595_OFFSET"
+#define TEMP_SENSOR_AD595_OFFSET 0.0
+#define TEMP_SENSOR_AD595_GAIN   1.0
+
+//This is for controlling a fan to cool down the stepper drivers
+//it will turn on when any driver is enabled
+//and turn off after the set amount of seconds from last driver being disabled again
+#define CONTROLLERFAN_PIN -1 //Pin used for the fan to cool controller (-1 to disable)
+#define CONTROLLERFAN_SECS 60 //How many seconds, after all motors were disabled, the fan should run
+#define CONTROLLERFAN_SPEED 255  // == full speed
+
+// When first starting the main fan, run it at full speed for the
+// given number of milliseconds.  This gets the fan spinning reliably
+// before setting a PWM value. (Does not work with software PWM for fan on Sanguinololu)
+//#define FAN_KICKSTART_TIME 100
+
+// Extruder cooling fans
+// Configure fan pin outputs to automatically turn on/off when the associated
+// extruder temperature is above/below EXTRUDER_AUTO_FAN_TEMPERATURE.
+// Multiple extruders can be assigned to the same pin in which case
+// the fan will turn on when any selected extruder is above the threshold.
+#define EXTRUDER_0_AUTO_FAN_PIN   -1
+#define EXTRUDER_1_AUTO_FAN_PIN   -1
+#define EXTRUDER_2_AUTO_FAN_PIN   -1
+#define EXTRUDER_AUTO_FAN_TEMPERATURE 50
+#define EXTRUDER_AUTO_FAN_SPEED   255  // == full speed
+
+
+//===========================================================================
+//=============================Mechanical Settings===========================
+//===========================================================================
+
+#define ENDSTOPS_ONLY_FOR_HOMING // If defined the endstops will only be used for homing
+
+
+//// AUTOSET LOCATIONS OF LIMIT SWITCHES
+//// Added by ZetaPhoenix 09-15-2012
+#ifdef MANUAL_HOME_POSITIONS  // Use manual limit switch locations
+  #define X_HOME_POS MANUAL_X_HOME_POS
+  #define Y_HOME_POS MANUAL_Y_HOME_POS
+  #define Z_HOME_POS MANUAL_Z_HOME_POS
+#else //Set min/max homing switch positions based upon homing direction and min/max travel limits
+  //X axis
+  #if X_HOME_DIR == -1
+    #ifdef BED_CENTER_AT_0_0
+      #define X_HOME_POS X_MAX_LENGTH * -0.5
+    #else
+      #define X_HOME_POS X_MIN_POS
+    #endif //BED_CENTER_AT_0_0
+  #else
+    #ifdef BED_CENTER_AT_0_0
+      #define X_HOME_POS X_MAX_LENGTH * 0.5
+    #else
+      #define X_HOME_POS X_MAX_POS
+    #endif //BED_CENTER_AT_0_0
+  #endif //X_HOME_DIR == -1
+
+  //Y axis
+  #if Y_HOME_DIR == -1
+    #ifdef BED_CENTER_AT_0_0
+      #define Y_HOME_POS Y_MAX_LENGTH * -0.5
+    #else
+      #define Y_HOME_POS Y_MIN_POS
+    #endif //BED_CENTER_AT_0_0
+  #else
+    #ifdef BED_CENTER_AT_0_0
+      #define Y_HOME_POS Y_MAX_LENGTH * 0.5
+    #else
+      #define Y_HOME_POS Y_MAX_POS
+    #endif //BED_CENTER_AT_0_0
+  #endif //Y_HOME_DIR == -1
+
+  // Z axis
+  #if Z_HOME_DIR == -1 //BED_CENTER_AT_0_0 not used
+    #define Z_HOME_POS Z_MIN_POS
+  #else
+    #define Z_HOME_POS Z_MAX_POS
+  #endif //Z_HOME_DIR == -1
+#endif //End auto min/max positions
+//END AUTOSET LOCATIONS OF LIMIT SWITCHES -ZP
+
+
+//#define Z_LATE_ENABLE // Enable Z the last moment. Needed if your Z driver overheats.
+
+// A single Z stepper driver is usually used to drive 2 stepper motors.
+// Uncomment this define to utilize a separate stepper driver for each Z axis motor.
+// Only a few motherboards support this, like RAMPS, which have dual extruder support (the 2nd, often unused, extruder driver is used
+// to control the 2nd Z axis stepper motor). The pins are currently only defined for a RAMPS motherboards.
+// On a RAMPS (or other 5 driver) motherboard, using this feature will limit you to using 1 extruder.
+//#define Z_DUAL_STEPPER_DRIVERS
+
+#ifdef Z_DUAL_STEPPER_DRIVERS
+  #undef EXTRUDERS
+  #define EXTRUDERS 1
+#endif
+
+// Same again but for Y Axis.
+//#define Y_DUAL_STEPPER_DRIVERS
+
+// Define if the two Y drives need to rotate in opposite directions
+#define INVERT_Y2_VS_Y_DIR true
+
+#ifdef Y_DUAL_STEPPER_DRIVERS
+  #undef EXTRUDERS
+  #define EXTRUDERS 1
+#endif
+
+#if defined (Z_DUAL_STEPPER_DRIVERS) && defined (Y_DUAL_STEPPER_DRIVERS)
+  #error "You cannot have dual drivers for both Y and Z"
+#endif
+
+// Enable this for dual x-carriage printers.
+// A dual x-carriage design has the advantage that the inactive extruder can be parked which
+// prevents hot-end ooze contaminating the print. It also reduces the weight of each x-carriage
+// allowing faster printing speeds.
+//#define DUAL_X_CARRIAGE
+#ifdef DUAL_X_CARRIAGE
+// Configuration for second X-carriage
+// Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
+// the second x-carriage always homes to the maximum endstop.
+#define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
+#define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
+#define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position
+#define X2_HOME_POS X2_MAX_POS // default home position is the maximum carriage position
+    // However: In this mode the EXTRUDER_OFFSET_X value for the second extruder provides a software
+    // override for X2_HOME_POS. This also allow recalibration of the distance between the two endstops
+    // without modifying the firmware (through the "M218 T1 X???" command).
+    // Remember: you should set the second extruder x-offset to 0 in your slicer.
+
+// Pins for second x-carriage stepper driver (defined here to avoid further complicating pins.h)
+#define X2_ENABLE_PIN 29
+#define X2_STEP_PIN 25
+#define X2_DIR_PIN 23
+
+// There are a few selectable movement modes for dual x-carriages using M605 S<mode>
+//    Mode 0: Full control. The slicer has full control over both x-carriages and can achieve optimal travel results
+//                           as long as it supports dual x-carriages. (M605 S0)
+//    Mode 1: Auto-park mode. The firmware will automatically park and unpark the x-carriages on tool changes so
+//                           that additional slicer support is not required. (M605 S1)
+//    Mode 2: Duplication mode. The firmware will transparently make the second x-carriage and extruder copy all
+//                           actions of the first x-carriage. This allows the printer to print 2 arbitrary items at
+//                           once. (2nd extruder x offset and temp offset are set using: M605 S2 [Xnnn] [Rmmm])
+
+// This is the default power-up mode which can be later using M605.
+#define DEFAULT_DUAL_X_CARRIAGE_MODE 0
+
+// As the x-carriages are independent we can now account for any relative Z offset
+#define EXTRUDER1_Z_OFFSET 0.0           // z offset relative to extruder 0
+
+// Default settings in "Auto-park Mode"
+#define TOOLCHANGE_PARK_ZLIFT   0.2      // the distance to raise Z axis when parking an extruder
+#define TOOLCHANGE_UNPARK_ZLIFT 1        // the distance to raise Z axis when unparking an extruder
+
+// Default x offset in duplication mode (typically set to half print bed width)
+#define DEFAULT_DUPLICATION_X_OFFSET 100
+
+#endif //DUAL_X_CARRIAGE
+
+//homing hits the endstop, then retracts by this distance, before it tries to slowly bump again:
+#define X_HOME_RETRACT_MM 3
+#define Y_HOME_RETRACT_MM 3
+#define Z_HOME_RETRACT_MM 3
+//#define QUICK_HOME  //if this is defined, if both x and y are to be homed, a diagonal move will be performed initially.
+#ifdef SCARA
+	#define QUICK_HOME //SCARA needs Quickhome
+#endif
+
+#define AXIS_RELATIVE_MODES {false, false, false, false}
+
+#define MAX_STEP_FREQUENCY 40000 // Max step frequency for Ultimaker (5000 pps / half step)
+
+//By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
+#define INVERT_X_STEP_PIN false
+#define INVERT_Y_STEP_PIN false
+#define INVERT_Z_STEP_PIN false
+#define INVERT_E_STEP_PIN false
+
+//default stepper release if idle
+#define DEFAULT_STEPPER_DEACTIVE_TIME 240
+
+#define DEFAULT_MINIMUMFEEDRATE       0.0     // minimum feedrate
+#define DEFAULT_MINTRAVELFEEDRATE     0.0
+
+// Feedrates for manual moves along X, Y, Z, E from panel
+#ifdef ULTIPANEL
+#define MANUAL_FEEDRATE {50*60, 50*60, 10*60, 60}  // set the speeds for manual moves (mm/min)
+#endif
+
+//Comment to disable setting feedrate multiplier via encoder
+#ifdef ULTIPANEL
+    #define ULTIPANEL_FEEDMULTIPLY
+#endif
+
+// minimum time in microseconds that a movement needs to take if the buffer is emptied.
+#define DEFAULT_MINSEGMENTTIME        20000
+
+// If defined the movements slow down when the look ahead buffer is only half full
+//#define SLOWDOWN
+#ifdef SCARA
+ #undef SLOWDOWN
+#endif
+// Frequency limit
+// See nophead's blog for more info
+// Not working O
+//#define XY_FREQUENCY_LIMIT  15
+
+// Minimum planner junction speed. Sets the default minimum speed the planner plans for at the end
+// of the buffer and all stops. This should not be much greater than zero and should only be changed
+// if unwanted behavior is observed on a user's machine when running at very slow speeds.
+#define MINIMUM_PLANNER_SPEED 0.05// (mm/sec)
+
+// MS1 MS2 Stepper Driver Microstepping mode table
+#define MICROSTEP1 LOW,LOW
+#define MICROSTEP2 HIGH,LOW
+#define MICROSTEP4 LOW,HIGH
+#define MICROSTEP8 HIGH,HIGH
+#define MICROSTEP16 HIGH,HIGH
+
+// Microstep setting (Only functional when stepper driver microstep pins are connected to MCU.
+#define MICROSTEP_MODES {16,16,16,16,16} // [1,2,4,8,16]
+
+// Motor Current setting (Only functional when motor driver current ref pins are connected to a digital trimpot on supported boards)
+#define DIGIPOT_MOTOR_CURRENT {135,135,135,135,135} // Values 0-255 (RAMBO 135 = ~0.75A, 185 = ~1A)
+
+// uncomment to enable an I2C based DIGIPOT like on the Azteeg X3 Pro
+//#define DIGIPOT_I2C
+// Number of channels available for I2C digipot, For Azteeg X3 Pro we have 8
+#define DIGIPOT_I2C_NUM_CHANNELS 8
+// actual motor currents in Amps, need as many here as DIGIPOT_I2C_NUM_CHANNELS
+#define DIGIPOT_I2C_MOTOR_CURRENTS {1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0}
+
+//===========================================================================
+//=============================Additional Features===========================
+//===========================================================================
+
+//#define CHDK 4        //Pin for triggering CHDK to take a picture see how to use it here http://captain-slow.dk/2014/03/09/3d-printing-timelapses/
+#define CHDK_DELAY 50 //How long in ms the pin should stay HIGH before going LOW again
+
+#define SD_FINISHED_STEPPERRELEASE true  //if sd support and the file is finished: disable steppers?
+#define SD_FINISHED_RELEASECOMMAND "M84 X Y Z E" // You might want to keep the z enabled so your bed stays in place.
+
+#define SDCARD_RATHERRECENTFIRST  //reverse file order of sd card menu display. Its sorted practically after the file system block order.
+// if a file is deleted, it frees a block. hence, the order is not purely chronological. To still have auto0.g accessible, there is again the option to do that.
+// using:
+//#define MENU_ADDAUTOSTART
+
+// The hardware watchdog should reset the microcontroller disabling all outputs, in case the firmware gets stuck and doesn't do temperature regulation.
+//#define USE_WATCHDOG
+
+#ifdef USE_WATCHDOG
+// If you have a watchdog reboot in an ArduinoMega2560 then the device will hang forever, as a watchdog reset will leave the watchdog on.
+// The "WATCHDOG_RESET_MANUAL" goes around this by not using the hardware reset.
+//  However, THIS FEATURE IS UNSAFE!, as it will only work if interrupts are disabled. And the code could hang in an interrupt routine with interrupts disabled.
+//#define WATCHDOG_RESET_MANUAL
+#endif
+
+// Enable the option to stop SD printing when hitting and endstops, needs to be enabled from the LCD menu when this option is enabled.
+//#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
+
+// Babystepping enables the user to control the axis in tiny amounts, independently from the normal printing process
+// it can e.g. be used to change z-positions in the print startup phase in real-time
+// does not respect endstops!
+//#define BABYSTEPPING
+#ifdef BABYSTEPPING
+  #define BABYSTEP_XY  //not only z, but also XY in the menu. more clutter, more functions
+  #define BABYSTEP_INVERT_Z false  //true for inverse movements in Z
+  #define BABYSTEP_Z_MULTIPLICATOR 2 //faster z movements
+
+  #ifdef COREXY
+    #error BABYSTEPPING not implemented for COREXY yet.
+  #endif
+
+  #ifdef DELTA
+    #ifdef BABYSTEP_XY
+      #error BABYSTEPPING only implemented for Z axis on deltabots.
+    #endif
+  #endif
+  
+  #ifdef SCARA
+    #error BABYSTEPPING not implemented for SCARA yet.
+  #endif
+  
+#endif
+
+// extruder advance constant (s2/mm3)
+//
+// advance (steps) = STEPS_PER_CUBIC_MM_E * EXTUDER_ADVANCE_K * cubic mm per second ^ 2
+//
+// Hooke's law says:		force = k * distance
+// Bernoulli's principle says:	v ^ 2 / 2 + g . h + pressure / density = constant
+// so: v ^ 2 is proportional to number of steps we advance the extruder
+#define ADVANCE
+
+#ifdef ADVANCE
+  #define EXTRUDER_ADVANCE_K .0
+
+  #define D_FILAMENT 1.75
+  #define STEPS_MM_E 1000
+  #define EXTRUTION_AREA (0.25 * D_FILAMENT * D_FILAMENT * 3.14159)
+  #define STEPS_PER_CUBIC_MM_E (axis_steps_per_unit[E_AXIS]/ EXTRUTION_AREA)
+
+#endif // ADVANCE
+
+// Arc interpretation settings:
+#define MM_PER_ARC_SEGMENT 1
+#define N_ARC_CORRECTION 25
+
+const unsigned int dropsegments=5; //everything with less than this number of steps will be ignored as move and joined with the next movement
+
+// If you are using a RAMPS board or cheap E-bay purchased boards that do not detect when an SD card is inserted
+// You can get round this by connecting a push button or single throw switch to the pin defined as SDCARDCARDDETECT
+// in the pins.h file.  When using a push button pulling the pin to ground this will need inverted.  This setting should
+// be commented out otherwise
+#define SDCARDDETECTINVERTED
+
+#ifdef ULTIPANEL
+ #undef SDCARDDETECTINVERTED
+#endif
+
+// Power Signal Control Definitions
+// By default use ATX definition
+#ifndef POWER_SUPPLY
+  #define POWER_SUPPLY 1
+#endif
+// 1 = ATX
+#if (POWER_SUPPLY == 1)
+  #define PS_ON_AWAKE  LOW
+  #define PS_ON_ASLEEP HIGH
+#endif
+// 2 = X-Box 360 203W
+#if (POWER_SUPPLY == 2)
+  #define PS_ON_AWAKE  HIGH
+  #define PS_ON_ASLEEP LOW
+#endif
+
+// Control heater 0 and heater 1 in parallel.
+//#define HEATERS_PARALLEL
+
+//===========================================================================
+//=============================Buffers           ============================
+//===========================================================================
+
+// The number of linear motions that can be in the plan at any give time.
+// THE BLOCK_BUFFER_SIZE NEEDS TO BE A POWER OF 2, i.g. 8,16,32 because shifts and ors are used to do the ring-buffering.
+#if defined SDSUPPORT
+  #define BLOCK_BUFFER_SIZE 16   // SD,LCD,Buttons take more memory, block buffer needs to be smaller
+#else
+  #define BLOCK_BUFFER_SIZE 16 // maximize block buffer
+#endif
+
+
+//The ASCII buffer for receiving from the serial:
+#define MAX_CMD_SIZE 96
+#define BUFSIZE 4
+
+
+// Firmware based and LCD controlled retract
+// M207 and M208 can be used to define parameters for the retraction.
+// The retraction can be called by the slicer using G10 and G11
+// until then, intended retractions can be detected by moves that only extrude and the direction.
+// the moves are than replaced by the firmware controlled ones.
+
+// #define FWRETRACT  //ONLY PARTIALLY TESTED
+#ifdef FWRETRACT
+  #define MIN_RETRACT 0.1                //minimum extruded mm to accept a automatic gcode retraction attempt
+  #define RETRACT_LENGTH 3               //default retract length (positive mm)
+  #define RETRACT_FEEDRATE 35            //default feedrate for retracting (mm/s)
+  #define RETRACT_ZLIFT 0                //default retract Z-lift
+  #define RETRACT_RECOVER_LENGTH 0       //default additional recover length (mm, added to retract length when recovering)
+  #define RETRACT_RECOVER_FEEDRATE 8     //default feedrate for recovering from retraction (mm/s)
+#endif
+
+//adds support for experimental filament exchange support M600; requires display
+#ifdef ULTIPANEL
+  #define FILAMENTCHANGEENABLE
+  #ifdef FILAMENTCHANGEENABLE
+    #define FILAMENTCHANGE_XPOS 3
+    #define FILAMENTCHANGE_YPOS 3
+    #define FILAMENTCHANGE_ZADD 10
+    #define FILAMENTCHANGE_FIRSTRETRACT -2
+    #define FILAMENTCHANGE_FINALRETRACT -100
+  #endif
+#endif
+
+#ifdef FILAMENTCHANGEENABLE
+  #ifdef EXTRUDER_RUNOUT_PREVENT
+    #error EXTRUDER_RUNOUT_PREVENT currently incompatible with FILAMENTCHANGE
+  #endif
+#endif
+
+//===========================================================================
+//=============================  Define Defines  ============================
+//===========================================================================
+#if EXTRUDERS > 1 && defined TEMP_SENSOR_1_AS_REDUNDANT
+  #error "You cannot use TEMP_SENSOR_1_AS_REDUNDANT if EXTRUDERS > 1"
+#endif
+
+#if EXTRUDERS > 1 && defined HEATERS_PARALLEL
+  #error "You cannot use HEATERS_PARALLEL if EXTRUDERS > 1"
+#endif
+
+#if TEMP_SENSOR_0 > 0
+  #define THERMISTORHEATER_0 TEMP_SENSOR_0
+  #define HEATER_0_USES_THERMISTOR
+#endif
+#if TEMP_SENSOR_1 > 0
+  #define THERMISTORHEATER_1 TEMP_SENSOR_1
+  #define HEATER_1_USES_THERMISTOR
+#endif
+#if TEMP_SENSOR_2 > 0
+  #define THERMISTORHEATER_2 TEMP_SENSOR_2
+  #define HEATER_2_USES_THERMISTOR
+#endif
+#if TEMP_SENSOR_BED > 0
+  #define THERMISTORBED TEMP_SENSOR_BED
+  #define BED_USES_THERMISTOR
+#endif
+#if TEMP_SENSOR_0 == -1
+  #define HEATER_0_USES_AD595
+#endif
+#if TEMP_SENSOR_1 == -1
+  #define HEATER_1_USES_AD595
+#endif
+#if TEMP_SENSOR_2 == -1
+  #define HEATER_2_USES_AD595
+#endif
+#if TEMP_SENSOR_BED == -1
+  #define BED_USES_AD595
+#endif
+#if TEMP_SENSOR_0 == -2
+  #define HEATER_0_USES_MAX6675
+#endif
+#if TEMP_SENSOR_0 == 0
+  #undef HEATER_0_MINTEMP
+  #undef HEATER_0_MAXTEMP
+#endif
+#if TEMP_SENSOR_1 == 0
+  #undef HEATER_1_MINTEMP
+  #undef HEATER_1_MAXTEMP
+#endif
+#if TEMP_SENSOR_2 == 0
+  #undef HEATER_2_MINTEMP
+  #undef HEATER_2_MAXTEMP
+#endif
+#if TEMP_SENSOR_BED == 0
+  #undef BED_MINTEMP
+  #undef BED_MAXTEMP
+#endif
+
+
+#endif //__CONFIGURATION_ADV_H

Marlin/example_configurations/delta/Configuration.h

 //===========================================================================
 //============================= DELTA Printer ===============================
 //===========================================================================
-// For a Delta printer rplace the configuration files wilth the files in the
+// For a Delta printer replace the configuration files with the files in the
 // example_configurations/delta directory.
 //
 
 // 33 = RAMPS 1.3 / 1.4 (Power outputs: Extruder, Fan, Bed)
 // 34 = RAMPS 1.3 / 1.4 (Power outputs: Extruder0, Extruder1, Bed)
 // 35 = RAMPS 1.3 / 1.4 (Power outputs: Extruder, Fan, Fan)
+// 36 = RAMPS 1.3 / 1.4 (Power outputs: Extruder0, Extruder1, Fan)
 // 4  = Duemilanove w/ ATMega328P pin assignment
 // 5  = Gen6
 // 51 = Gen6 deluxe
 // 68 = Azteeg X3 Pro
 // 7  = Ultimaker
 // 71 = Ultimaker (Older electronics. Pre 1.5.4. This is rare)
+// 72 = Ultimainboard 2.x (Uses TEMP_SENSOR 20)
 // 77 = 3Drag Controller
 // 8  = Teensylu
 // 80 = Rumba
 // 81 = Printrboard (AT90USB1286)
 // 82 = Brainwave (AT90USB646)
 // 83 = SAV Mk-I (AT90USB1286)
+// 84 = Teensy++2.0 (AT90USB1286) // CLI compile: DEFINES=AT90USBxx_TEENSYPP_ASSIGNMENTS HARDWARE_MOTHERBOARD=84  make
 // 9  = Gen3+
 // 70 = Megatronics
 // 701= Megatronics v2.0
 // 702= Minitronics v1.0
 // 90 = Alpha OMCA board
 // 91 = Final OMCA board
-// 301 = Rambo
+// 301= Rambo
 // 21 = Elefu Ra Board (v3)
+// 88 = 5DPrint D8 Driver Board
+// 999 = Leapfrog
 
 #ifndef MOTHERBOARD
 #define MOTHERBOARD 33
 
 #define POWER_SUPPLY 1
 
-// Define this to have the electronics keep the powersupply off on startup. If you don't know what this is leave it.
+// Define this to have the electronics keep the power supply off on startup. If you don't know what this is leave it.
 // #define PS_DEFAULT_OFF
 
 //===========================================================================
 // and processor overload (too many expensive sqrt calls).
 #define DELTA_SEGMENTS_PER_SECOND 200
 
-// NOTE NB all values for DELTA_* values MOUST be floating point, so always have a decimal point in them
+// NOTE NB all values for DELTA_* values MUST be floating point, so always have a decimal point in them
 
 // Center-to-center distance of the holes in the diagonal push rods.
 #define DELTA_DIAGONAL_ROD 250.0 // mm
 // 0 is not used
 // 1 is 100k thermistor - best choice for EPCOS 100k (4.7k pullup)
 // 2 is 200k thermistor - ATC Semitec 204GT-2 (4.7k pullup)
-// 3 is mendel-parts thermistor (4.7k pullup)
+// 3 is Mendel-parts thermistor (4.7k pullup)
 // 4 is 10k thermistor !! do not use it for a hotend. It gives bad resolution at high temp. !!
 // 5 is 100K thermistor - ATC Semitec 104GT-2 (Used in ParCan & J-Head) (4.7k pullup)
 // 6 is 100k EPCOS - Not as accurate as table 1 (created using a fluke thermocouple) (4.7k pullup)
 // 8 is 100k 0603 SMD Vishay NTCS0603E3104FXT (4.7k pullup)
 // 9 is 100k GE Sensing AL03006-58.2K-97-G1 (4.7k pullup)
 // 10 is 100k RS thermistor 198-961 (4.7k pullup)
-// 60 is 100k Maker's Tool Works Kapton Bed Thermister
+// 11 is 100k beta 3950 1% thermistor (4.7k pullup)
+// 12 is 100k 0603 SMD Vishay NTCS0603E3104FXT (4.7k pullup) (calibrated for Makibox hot bed)
+// 13 is 100k Hisens 3950  1% up to 300°C for hotend "Simple ONE " & "Hotend "All In ONE" 
+// 20 is the PT100 circuit found in the Ultimainboard V2.x
+// 60 is 100k Maker's Tool Works Kapton Bed Thermistor beta=3950
 //
 //    1k ohm pullup tables - This is not normal, you would have to have changed out your 4.7k for 1k
 //                          (but gives greater accuracy and more stable PID)
 // 51 is 100k thermistor - EPCOS (1k pullup)
 // 52 is 200k thermistor - ATC Semitec 204GT-2 (1k pullup)
 // 55 is 100k thermistor - ATC Semitec 104GT-2 (Used in ParCan & J-Head) (1k pullup)
+//
+// 1047 is Pt1000 with 4k7 pullup
+// 1010 is Pt1000 with 1k pullup (non standard)
+// 147 is Pt100 with 4k7 pullup
+// 110 is Pt100 with 1k pullup (non standard)
 
 #define TEMP_SENSOR_0 -1
 #define TEMP_SENSOR_1 -1
 // HEATER_BED_DUTY_CYCLE_DIVIDER intervals.
 //#define HEATER_BED_DUTY_CYCLE_DIVIDER 4
 
+// If you want the M105 heater power reported in watts, define the BED_WATTS, and (shared for all extruders) EXTRUDER_WATTS
+//#define EXTRUDER_WATTS (12.0*12.0/6.7) //  P=I^2/R
+//#define BED_WATTS (12.0*12.0/1.1)      // P=I^2/R
+
 // PID settings:
 // Comment the following line to disable PID and enable bang-bang.
 #define PIDTEMP
                                   // is more then PID_FUNCTIONAL_RANGE then the PID will be shut off and the heater will be set to min/max.
   #define PID_INTEGRAL_DRIVE_MAX 255  //limit for the integral term
   #define K1 0.95 //smoothing factor within the PID
-  #define PID_dT ((16.0 * 8.0)/(F_CPU / 64.0 / 256.0)) //sampling period of the temperature routine
+  #define PID_dT ((OVERSAMPLENR * 10.0)/(F_CPU / 64.0 / 256.0)) //sampling period of the temperature routine
 
-// If you are using a preconfigured hotend then you can use one of the value sets by uncommenting it
+// If you are using a pre-configured hotend then you can use one of the value sets by uncommenting it
 // Ultimaker
     #define  DEFAULT_Kp 22.2
     #define  DEFAULT_Ki 1.08
     #define  DEFAULT_Kd 114
 
-// Makergear
+// MakerGear
 //    #define  DEFAULT_Kp 7.0
 //    #define  DEFAULT_Ki 0.1
 //    #define  DEFAULT_Kd 12
 #define EXTRUDE_MINTEMP 170
 #define EXTRUDE_MAXLENGTH (X_MAX_LENGTH+Y_MAX_LENGTH) //prevent extrusion of very large distances.
 
+/*================== Thermal Runaway Protection ==============================
+This is a feature to protect your printer from burn up in flames if it has
+a thermistor coming off place (this happened to a friend of mine recently and
+motivated me writing this feature).
+
+The issue: If a thermistor come off, it will read a lower temperature than actual.
+The system will turn the heater on forever, burning up the filament and anything
+else around.
+
+After the temperature reaches the target for the first time, this feature will 
+start measuring for how long the current temperature stays below the target 
+minus _HYSTERESIS (set_temperature - THERMAL_RUNAWAY_PROTECTION_HYSTERESIS).
+
+If it stays longer than _PERIOD, it means the thermistor temperature
+cannot catch up with the target, so something *may be* wrong. Then, to be on the
+safe side, the system will he halt.
+
+Bear in mind the count down will just start AFTER the first time the 
+thermistor temperature is over the target, so you will have no problem if
+your extruder heater takes 2 minutes to hit the target on heating.
+
+*/
+// If you want to enable this feature for all your extruder heaters,
+// uncomment the 2 defines below:
+
+// Parameters for all extruder heaters
+//#define THERMAL_RUNAWAY_PROTECTION_PERIOD 40 //in seconds
+//#define THERMAL_RUNAWAY_PROTECTION_HYSTERESIS 4 // in degree Celsius
+
+// If you want to enable this feature for your bed heater,
+// uncomment the 2 defines below:
+
+// Parameters for the bed heater
+//#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
+//#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
+//===========================================================================
+
+
 //===========================================================================
 //=============================Mechanical Settings===========================
 //===========================================================================
 #define ENDSTOPPULLUPS // Comment this out (using // at the start of the line) to disable the endstop pullup resistors
 
 #ifndef ENDSTOPPULLUPS
-  // fine Enstop settings: Individual Pullups. will be ignored if ENDSTOPPULLUPS is defined
+  // fine endstop settings: Individual pullups. will be ignored if ENDSTOPPULLUPS is defined
   // #define ENDSTOPPULLUP_XMAX
   // #define ENDSTOPPULLUP_YMAX
   // #define ENDSTOPPULLUP_ZMAX
 #define DISABLE_Y false
 #define DISABLE_Z false
 #define DISABLE_E false // For all extruders
+#define DISABLE_INACTIVE_EXTRUDER true //disable only inactive extruders and keep active extruder enabled
 
 #define INVERT_X_DIR false // DELTA does not invert
 #define INVERT_Y_DIR false
 //============================= Bed Auto Leveling ===========================
 
 //#define ENABLE_AUTO_BED_LEVELING // Delete the comment to enable (remove // at the start of the line)
+#define Z_PROBE_REPEATABILITY_TEST  // If not commented out, Z-Probe Repeatability test will be included if Auto Bed Leveling is Enabled.
 
 #ifdef ENABLE_AUTO_BED_LEVELING
 
-  // these are the positions on the bed to do the probing
-  #define LEFT_PROBE_BED_POSITION 15
-  #define RIGHT_PROBE_BED_POSITION 170
-  #define BACK_PROBE_BED_POSITION 180
-  #define FRONT_PROBE_BED_POSITION 20
+// There are 2 different ways to pick the X and Y locations to probe:
+
+//  - "grid" mode
+//    Probe every point in a rectangular grid
+//    You must specify the rectangle, and the density of sample points
+//    This mode is preferred because there are more measurements.
+//    It used to be called ACCURATE_BED_LEVELING but "grid" is more descriptive
+
+//  - "3-point" mode
+//    Probe 3 arbitrary points on the bed (that aren't colinear)
+//    You must specify the X & Y coordinates of all 3 points
+
+  #define AUTO_BED_LEVELING_GRID
+  // with AUTO_BED_LEVELING_GRID, the bed is sampled in a
+  // AUTO_BED_LEVELING_GRID_POINTSxAUTO_BED_LEVELING_GRID_POINTS grid
+  // and least squares solution is calculated
+  // Note: this feature occupies 10'206 byte
+  #ifdef AUTO_BED_LEVELING_GRID
+
+    // set the rectangle in which to probe
+    #define LEFT_PROBE_BED_POSITION 15
+    #define RIGHT_PROBE_BED_POSITION 170
+    #define BACK_PROBE_BED_POSITION 180
+    #define FRONT_PROBE_BED_POSITION 20
+
+     // set the number of grid points per dimension
+     // I wouldn't see a reason to go above 3 (=9 probing points on the bed)
+    #define AUTO_BED_LEVELING_GRID_POINTS 2
+
+
+  #else  // not AUTO_BED_LEVELING_GRID
+    // with no grid, just probe 3 arbitrary points.  A simple cross-product
+    // is used to esimate the plane of the print bed
+
+      #define ABL_PROBE_PT_1_X 15
+      #define ABL_PROBE_PT_1_Y 180
+      #define ABL_PROBE_PT_2_X 15
+      #define ABL_PROBE_PT_2_Y 20
+      #define ABL_PROBE_PT_3_X 170
+      #define ABL_PROBE_PT_3_Y 20
+
+  #endif // AUTO_BED_LEVELING_GRID
 
-  // these are the offsets to the prob relative to the extruder tip (Hotend - Probe)
+
+  // these are the offsets to the probe relative to the extruder tip (Hotend - Probe)
   #define X_PROBE_OFFSET_FROM_EXTRUDER -25
   #define Y_PROBE_OFFSET_FROM_EXTRUDER -29
   #define Z_PROBE_OFFSET_FROM_EXTRUDER -12.35
   #define Z_RAISE_BEFORE_PROBING 15    //How much the extruder will be raised before traveling to the first probing point.
   #define Z_RAISE_BETWEEN_PROBINGS 5  //How much the extruder will be raised when traveling from between next probing points
 
+  //#define Z_PROBE_SLED // turn on if you have a z-probe mounted on a sled like those designed by Charles Bell
+  //#define SLED_DOCKING_OFFSET 5 // the extra distance the X axis must travel to pickup the sled. 0 should be fine but you can push it further if you'd like.
 
   //If defined, the Probe servo will be turned on only during movement and then turned off to avoid jerk
   //The value is the delay to turn the servo off after powered on - depends on the servo speed; 300ms is good value, but you can try lower it.
 //  #define PROBE_SERVO_DEACTIVATION_DELAY 300
 
 
-//If you have enabled the Bed Auto Levelling and are using the same Z Probe for Z Homing,
+//If you have enabled the Bed Auto Leveling and are using the same Z Probe for Z Homing,
 //it is highly recommended you let this Z_SAFE_HOMING enabled!!!
 
   #define Z_SAFE_HOMING   // This feature is meant to avoid Z homing with probe outside the bed area.
 
   #endif
 
-#endif
+#endif // ENABLE_AUTO_BED_LEVELING
 
 
 // The position of the homing switches
 //Manual homing switch locations:
 
 #define MANUAL_HOME_POSITIONS  // MANUAL_*_HOME_POS below will be used
-// For deltabots this means top and center of the cartesian print volume.
+// For deltabots this means top and center of the Cartesian print volume.
 #define MANUAL_X_HOME_POS 0
 #define MANUAL_Y_HOME_POS 0
 #define MANUAL_Z_HOME_POS 250 // For delta: Distance between nozzle and print surface after homing.
 //=============================Additional Features===========================
 //===========================================================================
 
+// Custom M code points
+#define CUSTOM_M_CODES
+#ifdef CUSTOM_M_CODES
+  #define CUSTOM_M_CODE_SET_Z_PROBE_OFFSET 851
+  #define Z_PROBE_OFFSET_RANGE_MIN -15
+  #define Z_PROBE_OFFSET_RANGE_MAX -5
+#endif
+
+
 // EEPROM
-// the microcontroller can store settings in the EEPROM, e.g. max velocity...
-// M500 - stores paramters in EEPROM
+// The microcontroller can store settings in the EEPROM, e.g. max velocity...
+// M500 - stores parameters in EEPROM
 // M501 - reads parameters from EEPROM (if you need reset them after you changed them temporarily).
 // M502 - reverts to the default "factory settings".  You still need to store them in EEPROM afterwards if you want to.
-//define this to enable eeprom support
+//define this to enable EEPROM support
 //#define EEPROM_SETTINGS
 //to disable EEPROM Serial responses and decrease program space by ~1700 byte: comment this out:
 // please keep turned on if you can.
 #define ABS_PREHEAT_FAN_SPEED 255   // Insert Value between 0 and 255
 
 //LCD and SD support
-//#define ULTRA_LCD  //general lcd support, also 16x2
+//#define ULTRA_LCD  //general LCD support, also 16x2
 //#define DOGLCD  // Support for SPI LCD 128x64 (Controller ST7565R graphic Display Family)
 //#define SDSUPPORT // Enable SD Card Support in Hardware Console
 //#define SDSLOW // Use slower SD transfer mode (not normally needed - uncomment if you're getting volume init error)
+//#define SD_CHECK_AND_RETRY // Use CRC checks and retries on the SD communication
 //#define ENCODER_PULSES_PER_STEP 1 // Increase if you have a high resolution encoder
 //#define ENCODER_STEPS_PER_MENU_ITEM 5 // Set according to ENCODER_PULSES_PER_STEP or your liking
-//#define ULTIMAKERCONTROLLER //as available from the ultimaker online store.
-//#define ULTIPANEL  //the ultipanel as on thingiverse
+//#define ULTIMAKERCONTROLLER //as available from the Ultimaker online store.
+//#define ULTIPANEL  //the UltiPanel as on Thingiverse
+//#define LCD_FEEDBACK_FREQUENCY_HZ 1000	// this is the tone frequency the buzzer plays when on UI feedback. ie Screen Click
+//#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100 // the duration the buzzer plays the UI feedback sound. ie Screen Click
 
 // The MaKr3d Makr-Panel with graphic controller and SD support
 // http://reprap.org/wiki/MaKr3d_MaKrPanel
   #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD
   #define NEWPANEL
   #define ULTIPANEL
+
+  #ifndef ENCODER_PULSES_PER_STEP
+	#define ENCODER_PULSES_PER_STEP 4
+  #endif
+
+  #ifndef ENCODER_STEPS_PER_MENU_ITEM
+	#define ENCODER_STEPS_PER_MENU_ITEM 1
+  #endif
+
+
+  #ifdef LCD_USE_I2C_BUZZER
+	#define LCD_FEEDBACK_FREQUENCY_HZ 1000
+	#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100
+  #endif
+
 #endif
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs
 // https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/schematics#!shiftregister-connection
 //#define SR_LCD
 #ifdef SR_LCD
-   #define SR_LCD_2W_NL    // Non latching 2 wire shiftregister
+   #define SR_LCD_2W_NL    // Non latching 2 wire shift register
    //#define NEWPANEL
 #endif
 
     #define LCD_WIDTH 20
     #define LCD_HEIGHT 4
   #endif
-#else //no panel but just lcd
+#else //no panel but just LCD
   #ifdef ULTRA_LCD
   #ifdef DOGLCD // Change number of lines to match the 128x64 graphics display
     #define LCD_WIDTH 20
 // Increase the FAN pwm frequency. Removes the PWM noise but increases heating in the FET/Arduino
 //#define FAST_PWM_FAN
 
-// Temperature status leds that display the hotend and bet temperature.
-// If alle hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
+// Temperature status LEDs that display the hotend and bet temperature.
+// If all hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
 // Otherwise the RED led is on. There is 1C hysteresis.
 //#define TEMP_STAT_LEDS
 
 //#define SERVO_ENDSTOPS {-1, -1, 0} // Servo index for X, Y, Z. Disable with -1
 //#define SERVO_ENDSTOP_ANGLES {0,0, 0,0, 70,0} // X,Y,Z Axis Extend and Retract angles
 
+/**********************************************************************\
+ * Support for a filament diameter sensor
+ * Also allows adjustment of diameter at print time (vs  at slicing)
+ * Single extruder only at this point (extruder 0)
+ * 
+ * Motherboards
+ * 34 - RAMPS1.4 - uses Analog input 5 on the AUX2 connector 
+ * 81 - Printrboard - Uses Analog input 2 on the Aux 2 connector
+ * 301 - Rambo  - uses Analog input 3
+ * Note may require analog pins to be defined for different motherboards
+ **********************************************************************/
+#define FILAMENT_SENSOR
+#define FILAMENT_SENSOR_EXTRUDER_NUM	0  //The number of the extruder that has the filament sensor (0,1,2)
+#define MEASUREMENT_DELAY_CM			14  //measurement delay in cm.  This is the distance from filament sensor to middle of barrel
+
+#define DEFAULT_NOMINAL_FILAMENT_DIA  3.0  //Enter the diameter (in mm) of the filament generally used (3.0 mm or 1.75 mm) - this is then used in the slicer software.  Used for sensor reading validation
+#define MEASURED_UPPER_LIMIT          3.30  //upper limit factor used for sensor reading validation in mm
+#define MEASURED_LOWER_LIMIT          1.90  //lower limit factor for sensor reading validation in mm
+#define MAX_MEASUREMENT_DELAY			20  //delay buffer size in bytes (1 byte = 1cm)- limits maximum measurement delay allowable (must be larger than MEASUREMENT_DELAY_CM  and lower number saves RAM)
+
+//defines used in the code
+#define DEFAULT_MEASURED_FILAMENT_DIA  DEFAULT_NOMINAL_FILAMENT_DIA  //set measured to nominal initially 
+
+
+
+
+
+
+
 #include "Configuration_adv.h"
 #include "thermistortables.h"
 

Marlin/example_configurations/delta/Configuration_adv.h

 //=============================Additional Features===========================
 //===========================================================================
 
+//#define CHDK 4        //Pin for triggering CHDK to take a picture see how to use it here http://captain-slow.dk/2014/03/09/3d-printing-timelapses/
+#define CHDK_DELAY 50 //How long in ms the pin should stay HIGH before going LOW again
+
 #define SD_FINISHED_STEPPERRELEASE true  //if sd support and the file is finished: disable steppers?
 #define SD_FINISHED_RELEASECOMMAND "M84 X Y Z E" // You might want to keep the z enabled so your bed stays in place.
 
 // the moves are than replaced by the firmware controlled ones.
 
 // #define FWRETRACT  //ONLY PARTIALLY TESTED
-#define MIN_RETRACT 0.1 //minimum extruded mm to accept a automatic gcode retraction attempt
-
+#ifdef FWRETRACT
+  #define MIN_RETRACT 0.1                //minimum extruded mm to accept a automatic gcode retraction attempt
+  #define RETRACT_LENGTH 3               //default retract length (positive mm)
+  #define RETRACT_LENGTH_SWAP 13         //default swap retract length (positive mm), for extruder change
+  #define RETRACT_FEEDRATE 45            //default feedrate for retracting (mm/s)
+  #define RETRACT_ZLIFT 0                //default retract Z-lift
+  #define RETRACT_RECOVER_LENGTH 0       //default additional recover length (mm, added to retract length when recovering)
+  #define RETRACT_RECOVER_LENGTH_SWAP 0  //default additional swap recover length (mm, added to retract length when recovering from extruder change)
+  #define RETRACT_RECOVER_FEEDRATE 8     //default feedrate for recovering from retraction (mm/s)
+#endif
 
 //adds support for experimental filament exchange support M600; requires display
 #ifdef ULTIPANEL

Marlin/motion_control.cpp

   if (angular_travel < 0) { angular_travel += 2*M_PI; }
   if (isclockwise) { angular_travel -= 2*M_PI; }
   
+  //20141002:full circle for G03 did not work, e.g. G03 X80 Y80 I20 J0 F2000 is giving an Angle of zero so head is not moving
+  //to compensate when start pos = target pos && angle is zero -> angle = 2Pi
+  if (position[axis_0] == target[axis_0] && position[axis_1] == target[axis_1] && angular_travel == 0)
+  {
+	  angular_travel += 2*M_PI;
+  }
+  //end fix G03
+  
   float millimeters_of_travel = hypot(angular_travel*radius, fabs(linear_travel));
   if (millimeters_of_travel < 0.001) { return; }
   uint16_t segments = floor(millimeters_of_travel/MM_PER_ARC_SEGMENT);

Marlin/pins.h

 #endif /* 88 */
 
 /****************************************************************************************
+* Leapfrog Driver board
+* 
+****************************************************************************************/
+#if MOTHERBOARD == 999  // Leapfrog board
+#define KNOWN_BOARD 1
+
+#ifndef __AVR_ATmega1280__
+ #ifndef __AVR_ATmega2560__
+ #error Oops!  Make sure you have 'Arduino Mega' selected from the 'Tools -> Boards' menu.
+ #endif
+#endif
+
+#define X_STEP_PIN         28
+#define X_DIR_PIN          63
+#define X_ENABLE_PIN       29
+#define X_MIN_PIN          47
+#define X_MAX_PIN          -1   //2 //Max endstops default to disabled "-1", set to commented value to enable.
+
+#define Y_STEP_PIN         14 // A6
+#define Y_DIR_PIN          15 // A0
+#define Y_ENABLE_PIN       39
+#define Y_MIN_PIN          48
+#define Y_MAX_PIN          -1   //15
+
+#define Z_STEP_PIN         31 // A2
+#define Z_DIR_PIN          32 // A6
+#define Z_ENABLE_PIN       30 // A1
+#define Z_MIN_PIN          49
+#define Z_MAX_PIN          -1
+
+#define E0_STEP_PIN         34  //34
+#define E0_DIR_PIN          35 //35
+#define E0_ENABLE_PIN       33 //33
+
+#define E1_STEP_PIN         37 //37
+#define E1_DIR_PIN          40 //40
+#define E1_ENABLE_PIN       36 //36
+
+#define Y2_STEP_PIN         37
+#define Y2_DIR_PIN          40
+#define Y2_ENABLE_PIN       36
+
+#define Z2_STEP_PIN         37
+#define Z2_DIR_PIN          40
+#define Z2_ENABLE_PIN       36
+
+#define SDPOWER            -1
+#define SDSS               11
+#define SDCARDDETECT       -1 // 10 optional also used as mode pin
+#define LED_PIN            13
+#define FAN_PIN            7
+#define PS_ON_PIN          -1
+#define KILL_PIN           -1
+#define SOL1_PIN   16
+#define SOL2_PIN    17
+
+#define HEATER_0_PIN       9
+#define HEATER_1_PIN       8 // 12
+#define HEATER_2_PIN       11 //-1 // 13
+#define TEMP_0_PIN         13 //D27   // MUST USE ANALOG INPUT NUMBERING NOT DIGITAL OUTPUT NUMBERING!!!!!!!!!
+#define TEMP_1_PIN         15 // 1
+#define TEMP_2_PIN         -1 // 2
+#define HEATER_BED_PIN     10 // 14/15
+#define TEMP_BED_PIN       14 // 1,2 or I2C
+/*  Unused (1) (2) (3) 4 5 6 7 8 9 10 11 12 13 (14) (15) (16) 17 (18) (19) (20) (21) (22) (23) 24 (25) (26) (27) 28 (29) (30) (31)  */
+
+
+#endif
+
+/****************************************************************************************
 *
 *
 ****************************************************************************************/
 * Arduino Mega pin assignment
 *
 ****************************************************************************************/
-#if MOTHERBOARD == 3 || MOTHERBOARD == 33 || MOTHERBOARD == 34 || MOTHERBOARD == 35 || MOTHERBOARD == 77 || MOTHERBOARD == 67 || MOTHERBOARD == 68
+#if MOTHERBOARD == 3 || MOTHERBOARD == 33 || MOTHERBOARD == 34 || MOTHERBOARD == 35 || MOTHERBOARD == 36 || MOTHERBOARD == 77 || MOTHERBOARD == 67 || MOTHERBOARD == 68
 #define KNOWN_BOARD 1
 
 //////////////////FIX THIS//////////////
 // #define RAMPS_V_1_0
 
 
-#if MOTHERBOARD == 33 || MOTHERBOARD == 34 || MOTHERBOARD == 35 || MOTHERBOARD == 77 || MOTHERBOARD == 67 || MOTHERBOARD == 68
+#if MOTHERBOARD == 33 || MOTHERBOARD == 34 || MOTHERBOARD == 35 || MOTHERBOARD == 36 ||  MOTHERBOARD == 77 || MOTHERBOARD == 67 || MOTHERBOARD == 68
 
   #define LARGE_FLASH true
 
     #define FAN_PIN            4 // IO pin. Buffer needed
   #endif
 
-  #if MOTHERBOARD == 77
+  #if MOTHERBOARD == 77 || MOTHERBOARD == 36
     #define FAN_PIN            8
   #endif
 
     #define TEMP_2_PIN         -1   // ANALOG NUMBERING
   #endif
 
-  #if MOTHERBOARD == 35
+  #if MOTHERBOARD == 35 || MOTHERBOARD == 36
     #define HEATER_BED_PIN     -1    // NO BED
   #else
     #if MOTHERBOARD == 77
 
 #ifndef SDSUPPORT
 // these pins are defined in the SD library if building with SD support
-  #define MAX_SCK_PIN          52
-  #define MAX_MISO_PIN         50
-  #define MAX_MOSI_PIN         51
+  #define SCK_PIN          52
+  #define MISO_PIN         50
+  #define MOSI_PIN         51
   #define MAX6675_SS       53
 #else
   #define MAX6675_SS       49
 #define Z_DIR_PIN          28
 #define Z_STOP_PIN         30
 
-#define E0_STEP_PIN         17
-#define E0_DIR_PIN          21
+#define E0_STEP_PIN        17
+#define E0_DIR_PIN         21
 
 #define LED_PIN            -1
 

Marlin/planner.cpp

 bool autotemp_enabled=false;
 #endif
 
+unsigned char g_uc_extruder_last_move[3] = {0,0,0};
+
 //===========================================================================
 //=================semi-private variables, used in inline  functions    =====
 //===========================================================================
   {
     if (DISABLE_INACTIVE_EXTRUDER) //enable only selected extruder
     {
+
+      if(g_uc_extruder_last_move[0] > 0) g_uc_extruder_last_move[0]--;
+      if(g_uc_extruder_last_move[1] > 0) g_uc_extruder_last_move[1]--;
+      if(g_uc_extruder_last_move[2] > 0) g_uc_extruder_last_move[2]--;
+      
       switch(extruder)
       {
-        case 0: enable_e0(); disable_e1(); disable_e2(); break;
-        case 1: disable_e0(); enable_e1(); disable_e2(); break;
-        case 2: disable_e0(); disable_e1(); enable_e2(); break;
+        case 0: 
+          enable_e0(); 
+          g_uc_extruder_last_move[0] = BLOCK_BUFFER_SIZE*2;
+          
+          if(g_uc_extruder_last_move[1] == 0) disable_e1(); 
+          if(g_uc_extruder_last_move[2] == 0) disable_e2(); 
+        break;
+        case 1:
+          enable_e1(); 
+          g_uc_extruder_last_move[1] = BLOCK_BUFFER_SIZE*2;
+          
+          if(g_uc_extruder_last_move[0] == 0) disable_e0(); 
+          if(g_uc_extruder_last_move[2] == 0) disable_e2(); 
+        break;
+        case 2:
+          enable_e2(); 
+          g_uc_extruder_last_move[2] = BLOCK_BUFFER_SIZE*2;
+          
+          if(g_uc_extruder_last_move[0] == 0) disable_e0(); 
+          if(g_uc_extruder_last_move[1] == 0) disable_e1(); 
+        break;        
       }
     }
     else //enable all

Marlin/stepper.cpp

   pinMode(Y_MS1_PIN,OUTPUT);
   pinMode(Y_MS2_PIN,OUTPUT);
   pinMode(Z_MS1_PIN,OUTPUT);
-  pinMode(Z_MS2_PIN,OUTPUT);  
+  pinMode(Z_MS2_PIN,OUTPUT);
   pinMode(E0_MS1_PIN,OUTPUT);
   pinMode(E0_MS2_PIN,OUTPUT);
   for(int i=0;i<=4;i++) microstep_mode(i,microstep_modes[i]);

Marlin/temperature.cpp

 #include "temperature.h"
 #include "watchdog.h"
 
+#include "Sd2PinMap.h"
+
+
 //===========================================================================
 //=============================public variables============================
 //===========================================================================
 
   #ifdef HEATER_0_USES_MAX6675
     #ifndef SDSUPPORT
-      SET_OUTPUT(MAX_SCK_PIN);
-      WRITE(MAX_SCK_PIN,0);
+      SET_OUTPUT(SCK_PIN);
+      WRITE(SCK_PIN,0);
     
-      SET_OUTPUT(MAX_MOSI_PIN);
-      WRITE(MAX_MOSI_PIN,1);
+      SET_OUTPUT(MOSI_PIN);
+      WRITE(MOSI_PIN,1);
     
-      SET_INPUT(MAX_MISO_PIN);
-      WRITE(MAX_MISO_PIN,1);
+      SET_INPUT(MISO_PIN);
+      WRITE(MISO_PIN,1);
     #endif
+    /* Using pinMode and digitalWrite, as that was the only way I could get it to compile */
     
-    SET_OUTPUT(MAX6675_SS);
-    WRITE(MAX6675_SS,1);
+    //Have to toggle SD card CS pin to low first, to enable firmware to talk with SD card
+	pinMode(SS_PIN, OUTPUT);
+	digitalWrite(SS_PIN,0);  
+	pinMode(MAX6675_SS, OUTPUT);
+	digitalWrite(MAX6675_SS,1);
   #endif
 
   // Set analog inputs
 
 #ifdef HEATER_0_USES_MAX6675
 #define MAX6675_HEAT_INTERVAL 250
-long max6675_previous_millis = -HEAT_INTERVAL;
+long max6675_previous_millis = MAX6675_HEAT_INTERVAL;
 int max6675_temp = 2000;
 
 int read_max6675()

Marlin/thermistortables.h

 };
 #endif
 
+#if (THERMISTORHEATER_0 == 13) || (THERMISTORHEATER_1 == 13) || (THERMISTORHEATER_2 == 13) || (THERMISTORBED == 13)
+// Hisens thermistor B25/50 =3950 +/-1%
+
+const short temptable_13[][2] PROGMEM = {
+ {	22.5*OVERSAMPLENR,	300	},
+{	24.125*OVERSAMPLENR,	295	},
+{	25.875*OVERSAMPLENR,	290	},
+{	27.8125*OVERSAMPLENR,	285	},
+{	29.9375*OVERSAMPLENR,	280	},
+{	32.25*OVERSAMPLENR,	275	},
+{	34.8125*OVERSAMPLENR,	270	},
+{	37.625*OVERSAMPLENR,	265	},
+{	40.6875*OVERSAMPLENR,	260	},
+{	44.0625*OVERSAMPLENR,	255	},
+{	47.75*OVERSAMPLENR,	250	},
+{	51.8125*OVERSAMPLENR,	245	},
+{	56.3125*OVERSAMPLENR,	240	},
+{	61.25*OVERSAMPLENR,	235	},
+{	66.75*OVERSAMPLENR,	230	},
+{	72.8125*OVERSAMPLENR,	225	},
+{	79.5*OVERSAMPLENR,	220	},
+{	87*OVERSAMPLENR,	215	},
+{	95.3125*OVERSAMPLENR,	210	},
+{	104.1875*OVERSAMPLENR,	205	},
+{	112.75*OVERSAMPLENR,	200	},
+{	123.125*OVERSAMPLENR,	195	},
+{	135.75*OVERSAMPLENR,	190	},
+{	148.3125*OVERSAMPLENR,	185	},
+{	163.8125*OVERSAMPLENR,	180	},
+{	179*OVERSAMPLENR,	175	},
+{	211.125*OVERSAMPLENR,	170	},
+{	216.125*OVERSAMPLENR,	165	},
+{	236.5625*OVERSAMPLENR,	160	},
+{	258.5*OVERSAMPLENR,	155	},
+{	279.875*OVERSAMPLENR,	150	},
+{	305.375*OVERSAMPLENR,	145	},
+{	333.25*OVERSAMPLENR,	140	},
+{	362.5625*OVERSAMPLENR,	135	},
+{	393.6875*OVERSAMPLENR,	130	},
+{	425*OVERSAMPLENR,	125	},
+{	460.625*OVERSAMPLENR,	120	},
+{	495.1875*OVERSAMPLENR,	115	},
+{	530.875*OVERSAMPLENR,	110	},
+{	567.25*OVERSAMPLENR,	105	},
+{	601.625*OVERSAMPLENR,	100	},
+{	637.875*OVERSAMPLENR,	95	},
+{	674.5625*OVERSAMPLENR,	90	},
+{	710*OVERSAMPLENR,	85	},
+{	744.125*OVERSAMPLENR,	80	},
+{	775.9375*OVERSAMPLENR,	75	},
+{	806.875*OVERSAMPLENR,	70	},
+{	835.1875*OVERSAMPLENR,	65	},
+{	861.125*OVERSAMPLENR,	60	},
+{	884.375*OVERSAMPLENR,	55	},
+{	904.5625*OVERSAMPLENR,	50	},
+{	923.8125*OVERSAMPLENR,	45	},
+{	940.375*OVERSAMPLENR,	40	},
+{	954.625*OVERSAMPLENR,	35	},
+{	966.875*OVERSAMPLENR,	30	},
+{	977.0625*OVERSAMPLENR,	25	},
+{	986*OVERSAMPLENR,	20	},
+{	993.375*OVERSAMPLENR,	15	},
+{	999.5*OVERSAMPLENR,	10	},
+{	1004.5*OVERSAMPLENR,	5	},
+{	1008.5*OVERSAMPLENR,	0	}
+
+ };
+#endif
+
 #if (THERMISTORHEATER_0 == 20) || (THERMISTORHEATER_1 == 20) || (THERMISTORHEATER_2 == 20) || (THERMISTORBED == 20) // PT100 with INA826 amp on Ultimaker v2.0 electronics
 /* The PT100 in the Ultimaker v2.0 electronics has a high sample value for a high temperature.
 This does not match the normal thermistor behaviour so we need to set the following defines */
   PtLine(300,1000,4700)
 };
 #endif
-#if (THERMISTORHEATER_0 == 70) || (THERMISTORHEATER_1 == 70) || (THERMISTORHEATER_2 == 70) || (THERMISTORBED == 70) // 500C thermistor for Pico hot end
-const short temptable_70[][2] PROGMEM = {
-  {  110.774119598719*OVERSAMPLENR ,  350 },
-  {  118.214386957249*OVERSAMPLENR ,  345 },
-  {  126.211418543166*OVERSAMPLENR ,  340 },
-  {  134.789559066223*OVERSAMPLENR ,  335 },
-  {  144.004513869701*OVERSAMPLENR ,  330 },
-  {  153.884483790827*OVERSAMPLENR ,  325 },
-  {  164.484880793637*OVERSAMPLENR ,  320 },
-  {  175.848885102724*OVERSAMPLENR ,  315 },
-  {  188.006799079015*OVERSAMPLENR ,  310 },
-  {  201.008072969044*OVERSAMPLENR ,  305 },
-  {  214.83716032276*OVERSAMPLENR ,  300 },
-  {  229.784739779664*OVERSAMPLENR ,  295 },
-  {  245.499466045473*OVERSAMPLENR ,  290 },
-  {  262.2766342096*OVERSAMPLENR ,  285 },
-  {  280.073883176433*OVERSAMPLENR ,  280 },
-  {  298.952693467726*OVERSAMPLENR ,  275 },
-  {  318.808251051674*OVERSAMPLENR ,  270 },
-  {  337.490932563222*OVERSAMPLENR ,  265 },
-  {  361.683649122745*OVERSAMPLENR ,  260 },
-  {  384.717024083981*OVERSAMPLENR ,  255 },
-  {  408.659301759076*OVERSAMPLENR ,  250 },
-  {  433.471659455884*OVERSAMPLENR ,  245 },
-  {  459.199039926034*OVERSAMPLENR ,  240 },
-  {  485.566500982316*OVERSAMPLENR ,  235 },
-  {  512.538918631075*OVERSAMPLENR ,  230 },
-  {  539.980999544838*OVERSAMPLENR ,  225 },
-  {  567.783095549935*OVERSAMPLENR ,  220 },
-  {  595.698041673552*OVERSAMPLENR ,  215 },
-  {  623.633922319597*OVERSAMPLENR ,  210 },
-  {  651.356162750829*OVERSAMPLENR ,  205 },
-  {  678.700901620956*OVERSAMPLENR ,  200 },
-  {  705.528145361264*OVERSAMPLENR ,  195 },
-  {  731.61267976339*OVERSAMPLENR ,  190 },
-  {  756.786212184365*OVERSAMPLENR ,  185 },
-  {  780.950223357761*OVERSAMPLENR ,  180 },
-  {  804.012961595082*OVERSAMPLENR ,  175 },
-  {  825.904975939166*OVERSAMPLENR ,  170 },
-  {  846.403941639008*OVERSAMPLENR ,  165 },
-  {  865.52326974895*OVERSAMPLENR ,  160 },
-  {  883.246145367727*OVERSAMPLENR ,  155 },
-  {  899.5821946515*OVERSAMPLENR ,  150 },
-  {  914.544289228582*OVERSAMPLENR ,  145 },
-  {  928.145628221761*OVERSAMPLENR ,  140 },
-  {  940.422208546562*OVERSAMPLENR ,  135 },
-  {  951.456922916497*OVERSAMPLENR ,  130 },
-  {  961.303500633788*OVERSAMPLENR ,  125 },
-  {  970.044756889055*OVERSAMPLENR ,  120 },
-  {  977.761456230051*OVERSAMPLENR ,  115 },
-  {  984.540978083453*OVERSAMPLENR ,  110 },
-  {  990.440780765757*OVERSAMPLENR ,  105 },
-  {  995.589621465301*OVERSAMPLENR ,  100 },
-  {  1000.02514280144*OVERSAMPLENR ,  95 },
-  {  1003.84429789876*OVERSAMPLENR ,  90 },
-  {  1007.10199009318*OVERSAMPLENR ,  85 },
-  {  1009.87151698323*OVERSAMPLENR ,  80 },
-  {  1012.21633594237*OVERSAMPLENR ,  75 },
-  {  1014.18959892949*OVERSAMPLENR ,  70 },
-  {  1015.84079162998*OVERSAMPLENR ,  65 },
-  {  1017.21555915335*OVERSAMPLENR ,  60 },
-  {  1018.35284662863*OVERSAMPLENR ,  55 },
-  {  1019.28926921888*OVERSAMPLENR ,  50 },
-  {  1020.05398015669*OVERSAMPLENR ,  45 },
-  {  1020.67737496272*OVERSAMPLENR ,  40 },
-  {  1021.1802909627*OVERSAMPLENR ,  35 },
-  {  1021.58459281248*OVERSAMPLENR ,  30 },
-  {  1021.90701441192*OVERSAMPLENR ,  25 },
-  {  1022.16215103698*OVERSAMPLENR ,  20 },
-  {  1022.36275529549*OVERSAMPLENR ,  15 },
-  {  1022.51930392497*OVERSAMPLENR ,  10 },
-  {  1022.64051573734*OVERSAMPLENR ,  5 },
-  {  1022.73355805611*OVERSAMPLENR ,  0 }
-};
-#endif
 
 #define _TT_NAME(_N) temptable_ ## _N
 #define TT_NAME(_N) _TT_NAME(_N)

Marlin/ultralcd.cpp

 int absPreheatHPBTemp;
 int absPreheatFanSpeed;
 
+
 #ifdef ULTIPANEL
 static float manual_feedrate[] = MANUAL_FEEDRATE;
 #endif // ULTIPANEL
         enquecommand_P(PSTR(SD_FINISHED_RELEASECOMMAND));
     }
     autotempShutdown();
-    
-    cancel_heatup = true;
+
+	cancel_heatup = true;
 }
 
 /* Menu implementation */
 }
 #endif
 
+void lcd_set_home_offsets()
+{
+    for(int8_t i=0; i < NUM_AXIS; i++) {
+      if (i != E_AXIS) {
+        add_homing[i] -= current_position[i];
+        current_position[i] = 0.0;
+      }
+    }
+    plan_set_position(0.0, 0.0, 0.0, current_position[E_AXIS]);
+
+    // Audio feedback
+    enquecommand_P(PSTR("M300 S659 P200"));
+    enquecommand_P(PSTR("M300 S698 P200"));
+    lcd_return_to_status();
+}
+
+
 #ifdef BABYSTEPPING
 static void lcd_babystep_x()
 {
     START_MENU();
     MENU_ITEM(back, MSG_MAIN, lcd_main_menu);
     MENU_ITEM_EDIT(int3, MSG_SPEED, &feedmultiply, 10, 999);
+#if TEMP_SENSOR_0 != 0
     MENU_ITEM_EDIT(int3, MSG_NOZZLE, &target_temperature[0], 0, HEATER_0_MAXTEMP - 15);
+#endif
 #if TEMP_SENSOR_1 != 0
     MENU_ITEM_EDIT(int3, MSG_NOZZLE1, &target_temperature[1], 0, HEATER_1_MAXTEMP - 15);
 #endif
 #endif
     MENU_ITEM(gcode, MSG_DISABLE_STEPPERS, PSTR("M84"));
     MENU_ITEM(gcode, MSG_AUTO_HOME, PSTR("G28"));
+    MENU_ITEM(function, MSG_SET_HOME_OFFSETS, lcd_set_home_offsets);
     //MENU_ITEM(gcode, MSG_SET_ORIGIN, PSTR("G92 X0 Y0 Z0"));
 #if TEMP_SENSOR_0 != 0
   #if TEMP_SENSOR_1 != 0 || TEMP_SENSOR_2 != 0 || TEMP_SENSOR_BED != 0
 
     START_MENU();
     MENU_ITEM(back, MSG_CONTROL, lcd_control_menu);
+#if TEMP_SENSOR_0 != 0
     MENU_ITEM_EDIT(int3, MSG_NOZZLE, &target_temperature[0], 0, HEATER_0_MAXTEMP - 15);
+#endif
 #if TEMP_SENSOR_1 != 0
     MENU_ITEM_EDIT(int3, MSG_NOZZLE1, &target_temperature[1], 0, HEATER_1_MAXTEMP - 15);
 #endif
     MENU_ITEM_EDIT(int3, MSG_BED, &target_temperature_bed, 0, BED_MAXTEMP - 15);
 #endif
     MENU_ITEM_EDIT(int3, MSG_FAN_SPEED, &fanSpeed, 0, 255);
-#ifdef AUTOTEMP
+#if defined AUTOTEMP && (TEMP_SENSOR_0 != 0)
     MENU_ITEM_EDIT(bool, MSG_AUTOTEMP, &autotemp_enabled);
     MENU_ITEM_EDIT(float3, MSG_MIN, &autotemp_min, 0, HEATER_0_MAXTEMP - 15);
     MENU_ITEM_EDIT(float3, MSG_MAX, &autotemp_max, 0, HEATER_0_MAXTEMP - 15);
     START_MENU();
     MENU_ITEM(back, MSG_TEMPERATURE, lcd_control_temperature_menu);
     MENU_ITEM_EDIT(int3, MSG_FAN_SPEED, &plaPreheatFanSpeed, 0, 255);
+#if TEMP_SENSOR_0 != 0
     MENU_ITEM_EDIT(int3, MSG_NOZZLE, &plaPreheatHotendTemp, 0, HEATER_0_MAXTEMP - 15);
+#endif
 #if TEMP_SENSOR_BED != 0
     MENU_ITEM_EDIT(int3, MSG_BED, &plaPreheatHPBTemp, 0, BED_MAXTEMP - 15);
 #endif
     START_MENU();
     MENU_ITEM(back, MSG_TEMPERATURE, lcd_control_temperature_menu);
     MENU_ITEM_EDIT(int3, MSG_FAN_SPEED, &absPreheatFanSpeed, 0, 255);
+#if TEMP_SENSOR_0 != 0
     MENU_ITEM_EDIT(int3, MSG_NOZZLE, &absPreheatHotendTemp, 0, HEATER_0_MAXTEMP - 15);
+#endif
 #if TEMP_SENSOR_BED != 0
     MENU_ITEM_EDIT(int3, MSG_BED, &absPreheatHPBTemp, 0, BED_MAXTEMP - 15);
 #endif
 #ifdef ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
     MENU_ITEM_EDIT(bool, MSG_ENDSTOP_ABORT, &abort_on_endstop_hit);
 #endif
+#ifdef SCARA
+    MENU_ITEM_EDIT(float74, MSG_XSCALE, &axis_scaling[X_AXIS],0.5,2);
+    MENU_ITEM_EDIT(float74, MSG_YSCALE, &axis_scaling[Y_AXIS],0.5,2);
+#endif
     END_MENU();
 }
 
     MENU_ITEM(back, MSG_CONTROL, lcd_control_menu);
     MENU_ITEM_EDIT(bool, MSG_AUTORETRACT, &autoretract_enabled);
     MENU_ITEM_EDIT(float52, MSG_CONTROL_RETRACT, &retract_length, 0, 100);
-    #if EXTRUDERS > 1
+	#if EXTRUDERS > 1
       MENU_ITEM_EDIT(float52, MSG_CONTROL_RETRACT_SWAP, &retract_length_swap, 0, 100);
     #endif
     MENU_ITEM_EDIT(float3, MSG_CONTROL_RETRACTF, &retract_feedrate, 1, 999);
     MENU_ITEM_EDIT(float52, MSG_CONTROL_RETRACT_ZLIFT, &retract_zlift, 0, 999);
     MENU_ITEM_EDIT(float52, MSG_CONTROL_RETRACT_RECOVER, &retract_recover_length, 0, 100);
-    #if EXTRUDERS > 1
+	#if EXTRUDERS > 1
       MENU_ITEM_EDIT(float52, MSG_CONTROL_RETRACT_RECOVER_SWAP, &retract_recover_length_swap, 0, 100);
     #endif
     MENU_ITEM_EDIT(float3, MSG_CONTROL_RETRACT_RECOVERF, &retract_recover_feedrate, 1, 999);
     lcd_implementation_init();
 
 #ifdef NEWPANEL
-    SET_INPUT(BTN_EN1);
-    SET_INPUT(BTN_EN2);
+    pinMode(BTN_EN1,INPUT);
+    pinMode(BTN_EN2,INPUT);
     WRITE(BTN_EN1,HIGH);
     WRITE(BTN_EN2,HIGH);
   #if BTN_ENC > 0
-    SET_INPUT(BTN_ENC);
+    pinMode(BTN_ENC,INPUT);
     WRITE(BTN_ENC,HIGH);
   #endif
   #ifdef REPRAPWORLD_KEYPAD
-    SET_OUTPUT(SHIFT_CLK);
-    SET_OUTPUT(SHIFT_LD);
-    SET_INPUT(SHIFT_OUT);
+    pinMode(SHIFT_CLK,OUTPUT);
+    pinMode(SHIFT_LD,OUTPUT);
+    pinMode(SHIFT_OUT,INPUT);
     WRITE(SHIFT_OUT,HIGH);
     WRITE(SHIFT_LD,HIGH);
   #endif
 #else  // Not NEWPANEL
   #ifdef SR_LCD_2W_NL // Non latching 2 wire shift register
-     SET_OUTPUT(SR_DATA_PIN);
-     SET_OUTPUT(SR_CLK_PIN);
+     pinMode (SR_DATA_PIN, OUTPUT);
+     pinMode (SR_CLK_PIN, OUTPUT);
   #elif defined(SHIFT_CLK) 
-     SET_OUTPUT(SHIFT_CLK);
-     SET_OUTPUT(SHIFT_LD);
-     SET_OUTPUT(SHIFT_EN);
-     SET_INPUT(SHIFT_OUT);
+     pinMode(SHIFT_CLK,OUTPUT);
+     pinMode(SHIFT_LD,OUTPUT);
+     pinMode(SHIFT_EN,OUTPUT);
+     pinMode(SHIFT_OUT,INPUT);
      WRITE(SHIFT_OUT,HIGH);
      WRITE(SHIFT_LD,HIGH);
      WRITE(SHIFT_EN,LOW);
 #endif//!NEWPANEL
 
 #if defined (SDSUPPORT) && defined(SDCARDDETECT) && (SDCARDDETECT > 0)
-    SET_INPUT(SDCARDDETECT);
+    pinMode(SDCARDDETECT,INPUT);
     WRITE(SDCARDDETECT, HIGH);
     lcd_oldcardstatus = IS_SD_INSERTED;
 #endif//(SDCARDDETECT > 0)
   return conv;
 }
 
-char *itostr3(const int &xx)
+char *itostr3(const int &x)
 {
-  if (xx >= 100)
+  int xx = x;
+  if (xx < 0) {
+     conv[0]='-';
+     xx = -xx;
+  } else if (xx >= 100)
     conv[0]=(xx/100)%10+'0';
   else
     conv[0]=' ';

Marlin/ultralcd_implementation_hitachi_HD44780.h

 # endif//LCD_WIDTH > 19
     lcd.setCursor(LCD_WIDTH - 8, 1);
     lcd.print('Z');
-    lcd.print(ftostr32(current_position[Z_AXIS]));
+    lcd.print(ftostr32(current_position[Z_AXIS] + 0.00001));
 #endif//LCD_HEIGHT > 2
 
 #if LCD_HEIGHT > 3

Marlin/vector_3.cpp

 {
     vector_3 z_row = target.get_normal();
     vector_3 x_row = vector_3(1, 0, -target.x/target.z).get_normal();
-    vector_3 y_row = vector_3(0, 1, -target.y/target.z).get_normal();
+    vector_3 y_row = vector_3::cross(z_row, x_row).get_normal();
 
    // x_row.debug("x_row");
    // y_row.debug("y_row");

README.md

 ==========================
 Marlin 3D Printer Firmware
 ==========================
-[![Coverity Scan Build Status](https://scan.coverity.com/projects/2224/badge.svg)](https://scan.coverity.com/projects/2224)
-
+[![Coverity Scan Build Status](https://scan.coverity.com/projects/2224/badge.svg)](https://scan.coverity.com/projects/2224)
+
 Marlin has a GPL license because I believe in open development.
 Please do not use this code in products (3D printers, CNC etc) that are closed source or are crippled by a patent.
 
 *   PID tuning
 *   CoreXY kinematics (www.corexy.com/theory.html)
 *   Delta kinematics
+*   SCARA kinematics
 *   Dual X-carriage support for multiple extruder systems
 *   Configurable serial port to support connection of wireless adaptors.
 *   Automatic operation of extruder/cold-end cooling fans based on nozzle temperature
 *  G28 - Home all Axis
 *  G29 - Detailed Z-Probe, probes the bed at 3 points.  You must de at the home position for this to work correctly.
 *  G30 - Single Z Probe, probes bed at current XY location.
+*  G31 - Dock Z Probe sled (if enabled)
+*  G32 - Undock Z Probe sled (if enabled)
 *  G90 - Use Absolute Coordinates
 *  G91 - Use Relative Coordinates
 *  G92 - Set current position to cordinates given
 *  M140 - Set bed target temp
 *  M190 - Sxxx Wait for bed current temp to reach target temp. Waits only when heating
 *         Rxxx Wait for bed current temp to reach target temp. Waits when heating and cooling
-*  M200 D<millimeters>- set filament diameter and set E axis units to cubic millimeters (use S0 to set back to millimeters).
+*  M200 D<millimeters>- set filament diameter and set E axis units to cubic millimeters (use S0 to set back to millimeters).
 *  M201 - Set max acceleration in units/s^2 for print moves (M201 X1000 Y1000)
 *  M202 - Set max acceleration in units/s^2 for travel moves (M202 X1000 Y1000) Unused in Marlin!!
 *  M203 - Set maximum feedrate that your machine can sustain (M203 X200 Y200 Z300 E10000) in mm/sec
 *  M204 - Set default acceleration: S normal moves T filament only moves (M204 S3000 T7000) im mm/sec^2  also sets minimum segment time in ms (B20000) to prevent buffer underruns and M20 minimum feedrate
 *  M205 -  advanced settings:  minimum travel speed S=while printing T=travel only,  B=minimum segment time X= maximum xy jerk, Z=maximum Z jerk, E=maximum E jerk
 *  M206 - set additional homeing offset
-*  M207 - set retract length S[positive mm] F[feedrate mm/min] Z[additional zlift/hop], stays in mm regardless of M200 setting
-*  M208 - set recover=unretract length S[positive mm surplus to the M207 S*] F[feedrate mm/min]
+*  M207 - set retract length S[positive mm] F[feedrate mm/min] Z[additional zlift/hop], stays in mm regardless of M200 setting
+*  M208 - set recover=unretract length S[positive mm surplus to the M207 S*] F[feedrate mm/min]
 *  M209 - S<1=true/0=false> enable automatic retract detect if the slicer did not support G10/11: every normal extrude-only move will be classified as retract depending on the direction.
 *  M218 - set hotend offset (in mm): T<extruder_number> X<offset_on_X> Y<offset_on_Y>
 *  M220 S<factor in percent>- set speed factor override percentage
 *  M400 - Finish all moves
 *  M401 - Lower z-probe if present
 *  M402 - Raise z-probe if present
+*  M404 - N<dia in mm> Enter the nominal filament width (3mm, 1.75mm ) or will display nominal filament width without parameters
+*  M405 - Turn on Filament Sensor extrusion control.  Optional D<delay in cm> to set delay in centimeters between sensor and extruder
+*  M406 - Turn off Filament Sensor extrusion control
+*  M407 - Displays measured filament diameter
 *  M500 - stores paramters in EEPROM
 *  M501 - reads parameters from EEPROM (if you need reset them after you changed them temporarily).
 *  M502 - reverts to the default "factory settings".  You still need to store them in EEPROM afterwards if you want to.
 ===============================================
 Instructions for configuring Bed Auto Leveling
 ===============================================
+There are two options for this feature. You may choose to use a servo mounted on the X carriage or you may use a sled that mounts on the X axis and can be docked when not in use.
+See the section for each option below for specifics about installation and configuration. Also included are instructions that apply to both options.
+
+Note for RAMPS users:
+---------------------
+
+By default, RAMPS have no power on servo bus (if you happen to have a multimeter, check the voltage on servo power pins).
+In order to get the servo working, you need to supply 5V to 5V pin.. You can do it using your power supply (if it has a 5V output) or jumping the "Vcc" from Arduino to the 5V RAMPS rail.
+These 2 pins are located just between the Reset Button and the yellow fuses... There are marks in the board showing 5V and VCC.. just connect them..
+If jumping the arduino Vcc do RAMPS 5V rail, take care to not use a power hungry servo, otherwise you will cause a blackout in the arduino board ;-)
+
+Instructions for Both Options
+-----------------------------
+
 Uncomment the "ENABLE_AUTO_BED_LEVELING" define (commented by default)
 
+The following options define the probing positions. These are good starting values.
+I recommend to keep a better clearance from borders in the first run and then make the probes as close as possible to borders:
+
+* \#define LEFT_PROBE_BED_POSITION 30
+* \#define RIGHT_PROBE_BED_POSITION 140
+* \#define BACK_PROBE_BED_POSITION 140
+* \#define FRONT_PROBE_BED_POSITION 30
+
+A few more options:
+
+* \#define XY_TRAVEL_SPEED 6000
+
+X and Y axis travel speed between probes, in mm/min.
+Bear in mind that really fast moves may render step skipping. 6000 mm/min (100mm/s) is a good value.
+
+* \#define Z_RAISE_BEFORE_PROBING 10
+* \#define Z_RAISE_BETWEEN_PROBINGS 10
+
+The Z axis is lifted when traveling to the first probe point by Z_RAISE_BEFORE_PROBING value
+and then lifted when traveling from first to second and second to third point by Z_RAISE_BETWEEN_PROBINGS.
+All values are in mm as usual.
+
+Servo Option Notes
+------------------
 You will probably need a swivel Z-MIN endstop in the extruder. A rc servo do a great job.
 Check the system working here: http://www.youtube.com/watch?v=3IKMeOYz-1Q (Enable English subtitles)
 Teasing ;-) video: http://www.youtube.com/watch?v=x8eqSQNAyro
 
 * \#define SERVO_ENDSTOP_ANGLES {0,0, 0,0, 165,60} // X,Y,Z Axis Extend and Retract angles
 
-
 The first define tells firmware how many servos you have.
 The second tells what axis this servo will be attached to. In the example above, we have a servo in Z axis.
 The third one tells the angle in 2 situations: Probing (165º) and resting (60º). Check this with command M280 P0 S{angle} (example: M280 P0 S60 moves the servo to 60º)
 
-For RAMPS users:
-----------------
-
-By default, RAMPS have no power on servo bus (if you happen to have a multimeter, check the voltage on servo power pins).
-In order to get the servo working, you need to supply 5V to 5V pin.. You can do it using your power supply (if it has a 5V output) or jumping the "Vcc" from Arduino to the 5V RAMPS rail.
-These 2 pins are located just between the Reset Button and the yellow fuses... There are marks in the board showing 5V and VCC.. just connect them..
-If jumping the arduino Vcc do RAMPS 5V rail, take care to not use a power hungry servo, otherwise you will cause a blackout in the arduino board ;-)
-
-
 Next you need to define the Z endstop (probe) offset from hotend.
 My preferred method:
 
 * \#define Z_PROBE_OFFSET_FROM_EXTRUDER -5.1
 
 
-The following options define the probing positions. These are good starting values.
-I recommend to keep a better clearance from borders in the first run and then make the probes as close as possible to borders:
+Sled Option Notes
+-----------------
+The sled option uses an electromagnet to attach and detach to/from the X carriage. See http://www.thingiverse.com/thing:396692 for more details on how to print and install this feature. It uses the same connections as the servo option.
 
-* \#define LEFT_PROBE_BED_POSITION 30
-* \#define RIGHT_PROBE_BED_POSITION 140
-* \#define BACK_PROBE_BED_POSITION 140
-* \#define FRONT_PROBE_BED_POSITION 30
+To use the sled option, you must define two additional things in Configuration.h:
 
-A few more options:
+* \#define Z_PROBE_SLED
+* \#define SLED_DOCKING_OFFSET 5
 
-* \#define XY_TRAVEL_SPEED 6000
+Uncomment the Z_PROBE_SLED to define to enable the sled (commented out by default).
 
-X and Y axis travel speed between probes, in mm/min.
-Bear in mind that really fast moves may render step skipping. 6000 mm/min (100mm/s) is a good value.
+Uncomment the SLED_DOCKING_OFFSET to set the extra distance the X axis must travel to dock the sled. This value can be found by moving the X axis to its maximum position then measure the distance to the right X end and subtract the width of the sled (23mm if you printed the sled from Thingiverse).
 
-* \#define Z_RAISE_BEFORE_PROBING 10
-* \#define Z_RAISE_BETWEEN_PROBINGS 10
+Next you need to define the Z endstop (probe) offset from hotend.
+My preferred method:
 
-The Z axis is lifted when traveling to the first probe point by Z_RAISE_BEFORE_PROBING value
-and then lifted when traveling from first to second and second to third point by Z_RAISE_BETWEEN_PROBINGS.
-All values are in mm as usual. 
+* a) Home the X and Y axes.
+* b) Move the X axis to about the center of the print bed. Make a mark on the print bed.
+* c) Move the Y axis to the maximum position. Make another mark.
+* d) Home the X axis and use a straight edge to make a line between the two points.
+* e) Repeat (b)-(d) reversing the X and Y. When you are done you will have two lines on the print bed. We will use these to measure the offset for the Z probe endstop.
+* f) Move the nozzle so that it is positioned on the center point of the two lines. You can use fine movement of 0.1mm to get it as close as possible. Note the position of X and Y.
+* g) Zero the Z axis with the G92 Z0 command.
+* h) Raise the Z axis about 20mmm.
+* i) Use the G32 command to retrieve the sled.
+* j) Now more the X and Y axis to the position recorded in (f).
+* k) Lower the Z axis in 0.1mm steps until you hear the "click" meaning the mechanical endstop was trigged. You can confirm with the M119 command. Note the position of the Z axis.
+* l) Make a mark on the print bed where the endstop lever has touched the print bed. Raise the Z-axis about 30mm to give yourself some room.
+* m) Now measure the distance from the center point to the endstop impact site along the X and Y axis using the lines drawn previously.
+* n) Fill in the values below. If the endstop mark is in front of the line running left-to-right, use positive values. If it is behind, use negative values. For the Z axis use the value from (k) and subtract 0.1mm.
+
+For example, suppose you measured the endstop position and it was 20mm to the right of the line running front-to-back, 10mm toward the front of the line running left-to-right, and the value from (k) was 2.85. The values for the defines would be:
+
+* \#define X_PROBE_OFFSET_FROM_EXTRUDER 20
+* \#define Y_PROBE_OFFSET_FROM_EXTRUDER 10
+* \#define Z_PROBE_OFFSET_FROM_EXTRUDER 2.75
 
 That's it.. enjoy never having to calibrate your Z endstop neither leveling your bed by hand anymore ;-)