Add delta auto-calibration and configuration for Flsun AC

Marlin/Conditionals_post.h

     #ifndef DELTA_TOWER_ANGLE_TRIM_3
       #define DELTA_TOWER_ANGLE_TRIM_3 0.0
     #endif
+    #if ENABLED(DELTA_AUTO_CALIBRATION)
+      #ifndef H_FACTOR
+        #define H_FACTOR 1.00
+      #endif
+      #ifndef R_FACTOR
+        #define R_FACTOR -2.25
+      #endif
+    #endif
   #endif
 
   /**

Marlin/SanityCheck.h

 #endif
 
 /**
+ * Delta Auto calibration
+ */
+#if ENABLED(DELTA_AUTO_CALIBRATION) && ENABLED(NO_WORKSPACE_OFFSETS)
+  #error "To use DELTA_AUTO_CALIBRATION you must disable NO_WORKSPACE_OFFSETS."
+#endif
+
+/**
  * Allow only one bed leveling option to be defined
  */
 static_assert(1 >= 0

Marlin/example_configurations/delta/flsun_kossel_mini/Configuration.h → Marlin/example_configurations/delta/FLSUN/kossel_mini/Configuration.h

-/**
+/**
  * Marlin 3D Printer Firmware
  * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
   // Horizontal distance bridged by diagonal push rods when effector is centered.
   #define DELTA_RADIUS (DELTA_SMOOTH_ROD_OFFSET-(DELTA_EFFECTOR_OFFSET)-(DELTA_CARRIAGE_OFFSET))
 
+  // height from z=0.00 to home position
+  #define DELTA_HEIGHT 280 // get this value from auto calibrate
+
   // Print surface diameter/2 minus unreachable space (avoid collisions with vertical towers).
   #define DELTA_PRINTABLE_RADIUS 85.0
 
   // Delta calibration menu
   // uncomment to add three points calibration menu option.
   // See http://minow.blogspot.com/index.html#4918805519571907051
-  // If needed, adjust the X, Y, Z calibration coordinates
-  // in ultralcd.cpp@lcd_delta_calibrate_menu()
   //#define DELTA_CALIBRATION_MENU
 
+  // G33 Delta Auto-Calibration (Enable EEPROM_SETTINGS to store results)
+  //#define DELTA_AUTO_CALIBRATION
+  #if ENABLED(DELTA_AUTO_CALIBRATION)
+    #define DELTA_CALIBRATION_DEFAULT_POINTS 3 // set the default number of probe points : n*n (1-4)
+    #define DELTA_CALIBRATION_RADIUS (DELTA_PRINTABLE_RADIUS - 15) // set the radius for the calibration probe points
+  #endif
+
   // After homing move down to a height where XY movement is unconstrained
   //#define DELTA_HOME_TO_SAFE_ZONE
 
 // For DELTA this is the top-center of the Cartesian print volume.
 //#define MANUAL_X_HOME_POS 0
 //#define MANUAL_Y_HOME_POS 0
-#define MANUAL_Z_HOME_POS (286.5 - 6.5) // Distance between the nozzle to printbed after homing
+#define MANUAL_Z_HOME_POS DELTA_HEIGHT // Distance between the nozzle to printbed after homing
 
 // Use "Z Safe Homing" to avoid homing with a Z probe outside the bed area.
 //

Marlin/example_configurations/delta/flsun_kossel_mini/Configuration_adv.h → Marlin/example_configurations/delta/FLSUN/kossel_mini/Configuration_adv.h

 #define DIGIPOT_I2C_MOTOR_CURRENTS {1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0}  //  AZTEEG_X3_PRO
 
 //===========================================================================
+//============================== Delta Settings =============================
+//===========================================================================
+
+#if ENABLED(DELTA_AUTO_CALIBRATION)
+  /**
+   * Set the height short (H-10) with M665 Hx.xx.
+   * Set the delta_radius offset (R-5, R-10, R+5, R+10) with M665 Rx.xx.
+   * Run G33 Cx V3 (C2, C-2) with different values for C and R
+   * Take the average for R_FACTOR and maximum for H_FACTOR.
+   * Run the tests with default values!!!
+   */
+  //#define DELTA_CALIBRATE_EXPERT_MODE
+
+  // Remove the comments of the folling 2 lines to overide default values
+  #define H_FACTOR  1.02 //  1.0 < H_FACTOR <  1.11, default  1.00
+  #define R_FACTOR -3.95 // -6.7 < R_FACTOR < -2.25, default -2.25
+#endif
+
+//===========================================================================
 //=============================Additional Features===========================
 //===========================================================================
 

Marlin/example_configurations/delta/generic/Configuration.h

-/**
+/**
  * Marlin 3D Printer Firmware
  * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
   // Horizontal distance bridged by diagonal push rods when effector is centered.
   #define DELTA_RADIUS (DELTA_SMOOTH_ROD_OFFSET-(DELTA_EFFECTOR_OFFSET)-(DELTA_CARRIAGE_OFFSET))
 
+  // height from z=0.00 to home position
+  #define DELTA_HEIGHT 250 // get this value from auto calibrate
+
   // Print surface diameter/2 minus unreachable space (avoid collisions with vertical towers).
   #define DELTA_PRINTABLE_RADIUS 140.0
 
   // See http://minow.blogspot.com/index.html#4918805519571907051
   //#define DELTA_CALIBRATION_MENU
 
+  // G33 Delta Auto-Calibration (Enable EEPROM_SETTINGS to store results)
+  //#define DELTA_AUTO_CALIBRATION
+  #if ENABLED(DELTA_AUTO_CALIBRATION)
+    #define DELTA_CALIBRATION_DEFAULT_POINTS 3 // set the default number of probe points : n*n (1-4)
+    #define DELTA_CALIBRATION_RADIUS (DELTA_PRINTABLE_RADIUS - 15) // set the radius for the calibration probe points
+  #endif
+
   // After homing move down to a height where XY movement is unconstrained
   #define DELTA_HOME_TO_SAFE_ZONE
 
 // For DELTA this is the top-center of the Cartesian print volume.
 //#define MANUAL_X_HOME_POS 0
 //#define MANUAL_Y_HOME_POS 0
-#define MANUAL_Z_HOME_POS 250 // Distance between the nozzle to printbed after homing
+#define MANUAL_Z_HOME_POS DELTA_HEIGHT // Distance between the nozzle to printbed after homing
 
 // Use "Z Safe Homing" to avoid homing with a Z probe outside the bed area.
 //

Marlin/example_configurations/delta/generic/Configuration_adv.h

   /**
    * Set the height short (H-10) with M665 Hx.xx.
    * Set the delta_radius offset (R-5, R-10, R+5, R+10) with M665 Rx.xx.
-   * Run G33 Cx V3 with different values (C2, C-2).
+   * Run G33 Cx V3 (C2, C-2) with different values for C and R
    * Take the average for R_FACTOR and maximum for H_FACTOR.
-   * If R_FACTOR is too low accuracy is reduced. Too high reduces iteration speed.
    * Run the tests with default values!!!
    */
   //#define DELTA_CALIBRATE_EXPERT_MODE
+
+  // Remove the comments of the folling 2 lines to overide default values
   //#define H_FACTOR  1.02 //  1.0 < H_FACTOR <  1.11, default  1.00
   //#define R_FACTOR -3.95 // -6.7 < R_FACTOR < -2.25, default -2.25
 #endif

Marlin/example_configurations/delta/kossel_mini/Configuration.h

-/**
+/**
  * Marlin 3D Printer Firmware
  * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
   // Horizontal distance bridged by diagonal push rods when effector is centered.
   #define DELTA_RADIUS (DELTA_SMOOTH_ROD_OFFSET-(DELTA_EFFECTOR_OFFSET)-(DELTA_CARRIAGE_OFFSET))
 
+  // height from z=0.00 to home position
+  #define DELTA_HEIGHT 250 // get this value from auto calibrate
+
   // Print surface diameter/2 minus unreachable space (avoid collisions with vertical towers).
   #define DELTA_PRINTABLE_RADIUS 90.0
 
   // See http://minow.blogspot.com/index.html#4918805519571907051
   //#define DELTA_CALIBRATION_MENU
 
+  // G33 Delta Auto-Calibration (Enable EEPROM_SETTINGS to store results)
+  //#define DELTA_AUTO_CALIBRATION
+  #if ENABLED(DELTA_AUTO_CALIBRATION)
+    #define DELTA_CALIBRATION_DEFAULT_POINTS 3 // set the default number of probe points : n*n (1-4)
+    #define DELTA_CALIBRATION_RADIUS (DELTA_PRINTABLE_RADIUS - 15) // set the radius for the calibration probe points
+  #endif
+
   // After homing move down to a height where XY movement is unconstrained
   #define DELTA_HOME_TO_SAFE_ZONE
 
 // For DELTA this is the top-center of the Cartesian print volume.
 //#define MANUAL_X_HOME_POS 0
 //#define MANUAL_Y_HOME_POS 0
-#define MANUAL_Z_HOME_POS 250 // Distance between the nozzle to printbed after homing
+#define MANUAL_Z_HOME_POS DELTA_HEIGHT // Distance between the nozzle to printbed after homing
 
 // Use "Z Safe Homing" to avoid homing with a Z probe outside the bed area.
 //

Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h

   /**
    * Set the height short (H-10) with M665 Hx.xx.
    * Set the delta_radius offset (R-5, R-10, R+5, R+10) with M665 Rx.xx.
-   * Run G33 Cx V3 with different values (C2, C-2).
+   * Run G33 Cx V3 (C2, C-2) with different values for C and R
    * Take the average for R_FACTOR and maximum for H_FACTOR.
-   * If R_FACTOR is too low accuracy is reduced. Too high reduces iteration speed.
    * Run the tests with default values!!!
    */
   //#define DELTA_CALIBRATE_EXPERT_MODE
+
+  // Remove the comments of the folling 2 lines to overide default values
   //#define H_FACTOR  1.02 //  1.0 < H_FACTOR <  1.11, default  1.00
   //#define R_FACTOR -3.95 // -6.7 < R_FACTOR < -2.25, default -2.25
 #endif

Marlin/example_configurations/delta/kossel_pro/Configuration.h

-/**
+/**
  * Marlin 3D Printer Firmware
  * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
   // Horizontal distance bridged by diagonal push rods when effector is centered.
   #define DELTA_RADIUS (DELTA_SMOOTH_ROD_OFFSET-(DELTA_EFFECTOR_OFFSET)-(DELTA_CARRIAGE_OFFSET))
 
+  // height from z=0.00 to home position
+  #define DELTA_HEIGHT 277 // get this value from auto calibrate
+
   // Print surface diameter/2 minus unreachable space (avoid collisions with vertical towers).
   #define DELTA_PRINTABLE_RADIUS 127.0
 
   // See http://minow.blogspot.com/index.html#4918805519571907051
   //#define DELTA_CALIBRATION_MENU
 
+  // G33 Delta Auto-Calibration (Enable EEPROM_SETTINGS to store results)
+  //#define DELTA_AUTO_CALIBRATION
+  #if ENABLED(DELTA_AUTO_CALIBRATION)
+    #define DELTA_CALIBRATION_DEFAULT_POINTS 3 // set the default number of probe points : n*n (1-4)
+    #define DELTA_CALIBRATION_RADIUS (DELTA_PRINTABLE_RADIUS - 15) // set the radius for the calibration probe points
+  #endif
+
   // After homing move down to a height where XY movement is unconstrained
   #define DELTA_HOME_TO_SAFE_ZONE
 
 // For DELTA this is the top-center of the Cartesian print volume.
 //#define MANUAL_X_HOME_POS 0
 //#define MANUAL_Y_HOME_POS 0
-#define MANUAL_Z_HOME_POS 277 // Distance between the nozzle to printbed after homing
+#define MANUAL_Z_HOME_POS DELTA_HEIGHT // Distance between the nozzle to printbed after homing
 
 // Use "Z Safe Homing" to avoid homing with a Z probe outside the bed area.
 //

Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h

 #define DIGIPOT_I2C_MOTOR_CURRENTS {1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0}  //  AZTEEG_X3_PRO
 
 //===========================================================================
+//============================== Delta Settings =============================
+//===========================================================================
+
+#if ENABLED(DELTA_AUTO_CALIBRATION)
+  /**
+   * Set the height short (H-10) with M665 Hx.xx.
+   * Set the delta_radius offset (R-5, R-10, R+5, R+10) with M665 Rx.xx.
+   * Run G33 Cx V3 (C2, C-2) with different values for C and R
+   * Take the average for R_FACTOR and maximum for H_FACTOR.
+   * Run the tests with default values!!!
+   */
+  //#define DELTA_CALIBRATE_EXPERT_MODE
+
+  // Remove the comments of the folling 2 lines to overide default values
+  //#define H_FACTOR  1.02 //  1.0 < H_FACTOR <  1.11, default  1.00
+  //#define R_FACTOR -3.95 // -6.7 < R_FACTOR < -2.25, default -2.25
+#endif
+
+
+//===========================================================================
 //=============================Additional Features===========================
 //===========================================================================
 

Marlin/example_configurations/delta/kossel_xl/Configuration.h

-/**
+/**
  * Marlin 3D Printer Firmware
  * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
   // Horizontal distance bridged by diagonal push rods when effector is centered.
   #define DELTA_RADIUS (DELTA_SMOOTH_ROD_OFFSET-(DELTA_EFFECTOR_OFFSET)-(DELTA_CARRIAGE_OFFSET) + 1)
 
+  // height from z=0.00 to home position
+  #define DELTA_HEIGHT 380 // get this value from auto calibrate
+
   // Print surface diameter/2 minus unreachable space (avoid collisions with vertical towers).
   #define DELTA_PRINTABLE_RADIUS 140.0
 
   // See http://minow.blogspot.com/index.html#4918805519571907051
   //#define DELTA_CALIBRATION_MENU
 
+  // G33 Delta Auto-Calibration (Enable EEPROM_SETTINGS to store results)
+  //#define DELTA_AUTO_CALIBRATION
+  #if ENABLED(DELTA_AUTO_CALIBRATION)
+    #define DELTA_CALIBRATION_DEFAULT_POINTS 3 // set the default number of probe points : n*n (1-4)
+    #define DELTA_CALIBRATION_RADIUS (DELTA_PRINTABLE_RADIUS - 15) // set the radius for the calibration probe points
+  #endif
+
   // After homing move down to a height where XY movement is unconstrained
   #define DELTA_HOME_TO_SAFE_ZONE
 
 // For DELTA this is the top-center of the Cartesian print volume.
 //#define MANUAL_X_HOME_POS 0
 //#define MANUAL_Y_HOME_POS 0
-#define MANUAL_Z_HOME_POS 381.4 // Distance between the nozzle to printbed after homing
+#define MANUAL_Z_HOME_POS DELTA_HEIGHT // Distance between the nozzle to printbed after homing
 
 // Use "Z Safe Homing" to avoid homing with a Z probe outside the bed area.
 //

Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h

-/**
+/**
  * Marlin 3D Printer Firmware
  * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
 #define DIGIPOT_I2C_MOTOR_CURRENTS {1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0}  //  AZTEEG_X3_PRO
 
 //===========================================================================
+//============================== Delta Settings =============================
+//===========================================================================
+
+#if ENABLED(DELTA_AUTO_CALIBRATION)
+  /**
+   * Set the height short (H-10) with M665 Hx.xx.
+   * Set the delta_radius offset (R-5, R-10, R+5, R+10) with M665 Rx.xx.
+   * Run G33 Cx V3 (C2, C-2) with different values for C and R
+   * Take the average for R_FACTOR and maximum for H_FACTOR.
+   * Run the tests with default values!!!
+   */
+  //#define DELTA_CALIBRATE_EXPERT_MODE
+
+  // Remove the comments of the folling 2 lines to overide default values
+  //#define H_FACTOR  1.02 //  1.0 < H_FACTOR <  1.11, default  1.00
+  //#define R_FACTOR -3.95 // -6.7 < R_FACTOR < -2.25, default -2.25
+#endif
+
+//===========================================================================
 //=============================Additional Features===========================
 //===========================================================================