Cooler (for Laser) - M143, M193 (#21255)

Marlin/Configuration.h

     #define AUTO_POWER_E_FANS
     #define AUTO_POWER_CONTROLLERFAN
     #define AUTO_POWER_CHAMBER_FAN
+    #define AUTO_POWER_COOLER_FAN
     //#define AUTO_POWER_E_TEMP        50 // (°C) Turn on PSU if any extruder is over this temperature
     //#define AUTO_POWER_CHAMBER_TEMP  30 // (°C) Turn on PSU if the chamber is over this temperature
+    //#define AUTO_POWER_COOLER_TEMP   26 // (°C) Turn on PSU if the cooler is over this temperature
     #define POWER_TIMEOUT              30 // (s) Turn off power if the machine is idle for this duration
     //#define POWER_OFF_DELAY          60 // (s) Delay of poweroff after M81 command. Useful to let fans run for extra time.
   #endif
 #define TEMP_SENSOR_BED 0
 #define TEMP_SENSOR_PROBE 0
 #define TEMP_SENSOR_CHAMBER 0
+#define TEMP_SENSOR_COOLER 0
 
 // Dummy thermistor constant temperature readings, for use with 998 and 999
 #define DUMMY_THERMISTOR_998_VALUE  25
 #define THERMAL_PROTECTION_HOTENDS // Enable thermal protection for all extruders
 #define THERMAL_PROTECTION_BED     // Enable thermal protection for the heated bed
 #define THERMAL_PROTECTION_CHAMBER // Enable thermal protection for the heated chamber
+#define THERMAL_PROTECTION_COOLER  // Enable thermal protection for the laser cooling
 
 //===========================================================================
 //============================= Mechanical Settings =========================

Marlin/Configuration_adv.h

   #define CHAMBER_BETA                 3950    // Beta value
 #endif
 
+#if TEMP_SENSOR_COOLER == 1000
+  #define COOLER_PULLUP_RESISTOR_OHMS 4700    // Pullup resistor
+  #define COOLER_RESISTANCE_25C_OHMS  100000  // Resistance at 25C
+  #define COOLER_BETA                 3950    // Beta value
+#endif
+
 #if TEMP_SENSOR_PROBE == 1000
   #define PROBE_PULLUP_RESISTOR_OHMS   4700    // Pullup resistor
   #define PROBE_RESISTANCE_25C_OHMS    100000  // Resistance at 25C
   #endif
 #endif
 
+//
+// Laser Cooler options
+//
+#if TEMP_SENSOR_COOLER
+  #define COOLER_MINTEMP           8  // (°C)
+  #define COOLER_MAXTEMP          26  // (°C)
+  #define COOLER_DEFAULT_TEMP     16  // (°C)
+  #define TEMP_COOLER_HYSTERESIS   1  // (°C) Temperature proximity considered "close enough" to the target
+  #define COOLER_PIN               8  // Laser cooler on/off pin used to control power to the cooling element e.g. TEC, External chiller via relay
+  #define COOLER_INVERTING     false
+  #define TEMP_COOLER_PIN         15  // Laser/Cooler temperature sensor pin. ADC is required.
+  #define COOLER_FAN                  // Enable a fan on the cooler, Fan# 0,1,2,3 etc.
+  #define COOLER_FAN_INDEX         0  // FAN number 0, 1, 2 etc. e.g.
+  #if ENABLED(COOLER_FAN)
+    #define COOLER_FAN_BASE      100  // Base Cooler fan PWM (0-255); turns on when Cooler temperature is above the target
+    #define COOLER_FAN_FACTOR     25  // PWM increase per °C above target
+  #endif
+#endif
+
 /**
  * Thermal Protection provides additional protection to your printer from damage
  * and fire. Marlin always includes safe min and max temperature ranges which
   #define WATCH_CHAMBER_TEMP_INCREASE           2 // Degrees Celsius
 #endif
 
+/**
+ * Thermal Protection parameters for the laser cooler.
+ */
+#if ENABLED(THERMAL_PROTECTION_COOLER)
+  #define THERMAL_PROTECTION_COOLER_PERIOD    10 // Seconds
+  #define THERMAL_PROTECTION_COOLER_HYSTERESIS 3 // Degrees Celsius
+
+  /**
+   * Laser cooling watch settings (M143/M193).
+   */
+  #define WATCH_COOLER_TEMP_PERIOD            60 // Seconds
+  #define WATCH_COOLER_TEMP_INCREASE           3 // Degrees Celsius
+#endif
+
 #if ENABLED(PIDTEMP)
   // Add an experimental additional term to the heater power, proportional to the extrusion speed.
   // A well-chosen Kc value should add just enough power to melt the increased material volume.
 #define E6_AUTO_FAN_PIN -1
 #define E7_AUTO_FAN_PIN -1
 #define CHAMBER_AUTO_FAN_PIN -1
+#define COOLER_AUTO_FAN_PIN -1
+#define COOLER_FAN_PIN -1
 
 #define EXTRUDER_AUTO_FAN_TEMPERATURE 50
 #define EXTRUDER_AUTO_FAN_SPEED 255   // 255 == full speed
 #define CHAMBER_AUTO_FAN_TEMPERATURE 30
 #define CHAMBER_AUTO_FAN_SPEED 255
+#define COOLER_AUTO_FAN_TEMPERATURE 18
+#define COOLER_AUTO_FAN_SPEED 255
 
 /**
  * Part-Cooling Fan Multiplexer
   #define STATUS_BED_ANIM             // Use a second bitmap to indicate bed heating
   #define STATUS_CHAMBER_ANIM         // Use a second bitmap to indicate chamber heating
   //#define STATUS_CUTTER_ANIM        // Use a second bitmap to indicate spindle / laser active
+  //#define STATUS_COOLER_ANIM        // Use a second bitmap to indicate laser cooling
   //#define STATUS_ALT_BED_BITMAP     // Use the alternative bed bitmap
   //#define STATUS_ALT_FAN_BITMAP     // Use the alternative fan bitmap
   //#define STATUS_FAN_FRAMES 3       // :[0,1,2,3,4] Number of fan animation frames

Marlin/src/HAL/AVR/fastio.h

  */
 
 // Determine which harware PWMs are already in use
-#define _PWM_CHK_FAN_B(P) (P == E0_AUTO_FAN_PIN || P == E1_AUTO_FAN_PIN || P == E2_AUTO_FAN_PIN || P == E3_AUTO_FAN_PIN || P == E4_AUTO_FAN_PIN || P == E5_AUTO_FAN_PIN || P == E6_AUTO_FAN_PIN || P == E7_AUTO_FAN_PIN || P == CHAMBER_AUTO_FAN_PIN)
+#define _PWM_CHK_FAN_B(P) (P == E0_AUTO_FAN_PIN || P == E1_AUTO_FAN_PIN || P == E2_AUTO_FAN_PIN || P == E3_AUTO_FAN_PIN || P == E4_AUTO_FAN_PIN || P == E5_AUTO_FAN_PIN || P == E6_AUTO_FAN_PIN || P == E7_AUTO_FAN_PIN || P == CHAMBER_AUTO_FAN_PIN || P == COOLER_AUTO_FAN_PIN)
 #if PIN_EXISTS(CONTROLLER_FAN)
   #define PWM_CHK_FAN_B(P) (_PWM_CHK_FAN_B(P) || P == CONTROLLER_FAN_PIN)
 #else

Marlin/src/HAL/ESP32/HAL.cpp

   TERN_(HAS_TEMP_ADC_7, adc3_set_attenuation(get_channel(TEMP_7_PIN), ADC_ATTEN_11db));
   TERN_(HAS_HEATED_BED, adc1_set_attenuation(get_channel(TEMP_BED_PIN), ADC_ATTEN_11db));
   TERN_(HAS_TEMP_CHAMBER, adc1_set_attenuation(get_channel(TEMP_CHAMBER_PIN), ADC_ATTEN_11db));
+  TERN_(HAS_TEMP_COOLER, adc1_set_attenuation(get_channel(TEMP_COOLER_PIN), ADC_ATTEN_11db));
   TERN_(FILAMENT_WIDTH_SENSOR, adc1_set_attenuation(get_channel(FILWIDTH_PIN), ADC_ATTEN_11db));
 
   // Note that adc2 is shared with the WiFi module, which has higher priority, so the conversion may fail.

Marlin/src/HAL/SAMD51/HAL.cpp

 #define GET_PROBE_ADC()           TERN(HAS_TEMP_PROBE,        PIN_TO_ADC(TEMP_PROBE_PIN),   -1)
 #define GET_BED_ADC()             TERN(HAS_TEMP_ADC_BED,      PIN_TO_ADC(TEMP_BED_PIN),     -1)
 #define GET_CHAMBER_ADC()         TERN(HAS_TEMP_ADC_CHAMBER,  PIN_TO_ADC(TEMP_CHAMBER_PIN), -1)
+#define GET_COOLER_ADC()          TERN(HAS_TEMP_ADC_COOLER,   PIN_TO_ADC(TEMP_COOLER_PIN),  -1)
 #define GET_FILAMENT_WIDTH_ADC()  TERN(FILAMENT_WIDTH_SENSOR, PIN_TO_ADC(FILWIDTH_PIN),     -1)
 #define GET_BUTTONS_ADC()         TERN(HAS_ADC_BUTTONS,       PIN_TO_ADC(ADC_KEYPAD_PIN),   -1)
 
   || GET_PROBE_ADC() == n          \
   || GET_BED_ADC() == n            \
   || GET_CHAMBER_ADC() == n        \
+  || GET_COOLER_ADC() == n         \
   || GET_FILAMENT_WIDTH_ADC() == n \
   || GET_BUTTONS_ADC() == n        \
 )
     #if GET_CHAMBER_ADC() == 0
       TEMP_CHAMBER_PIN,
     #endif
+    #if GET_COOLER_ADC() == 0
+      TEMP_COOLER_PIN,
+    #endif
     #if GET_FILAMENT_WIDTH_ADC() == 0
       FILWIDTH_PIN,
     #endif
     #if GET_CHAMBER_ADC() == 1
       TEMP_CHAMBER_PIN,
     #endif
+    #if GET_COOLER_ADC() == 1
+      TEMP_COOLER_PIN,
+    #endif
     #if GET_FILAMENT_WIDTH_ADC() == 1
       FILWIDTH_PIN,
     #endif
       #if GET_CHAMBER_ADC() == 0
         { PIN_TO_INPUTCTRL(TEMP_CHAMBER_PIN) },
       #endif
+      #if GET_COOLER_ADC() == 0
+        { PIN_TO_INPUTCTRL(TEMP_COOLER_PIN) },
+      #endif
       #if GET_FILAMENT_WIDTH_ADC() == 0
         { PIN_TO_INPUTCTRL(FILWIDTH_PIN) },
       #endif
       #if GET_CHAMBER_ADC() == 1
         { PIN_TO_INPUTCTRL(TEMP_CHAMBER_PIN) },
       #endif
+      #if GET_COOLER_ADC() == 1
+        { PIN_TO_INPUTCTRL(TEMP_COOLER_PIN) },
+      #endif
       #if GET_FILAMENT_WIDTH_ADC() == 1
         { PIN_TO_INPUTCTRL(FILWIDTH_PIN) },
       #endif

Marlin/src/HAL/STM32F1/HAL.cpp

   #if HAS_TEMP_CHAMBER
     TEMP_CHAMBER_PIN,
   #endif
+  #if HAS_TEMP_COOLER
+    TEMP_COOLER_PIN,
+  #endif
   #if HAS_TEMP_ADC_1
     TEMP_1_PIN,
   #endif
   #if HAS_TEMP_CHAMBER
     TEMP_CHAMBER,
   #endif
+  #if HAS_TEMP_COOLER
+    TEMP_COOLER_PIN,
+  #endif
   #if HAS_TEMP_ADC_1
     TEMP_1,
   #endif
     #if HAS_TEMP_CHAMBER
       case TEMP_CHAMBER_PIN: pin_index = TEMP_CHAMBER; break;
     #endif
+    #if HAS_TEMP_COOLER
+      case TEMP_COOLER_PIN: pin_index = TEMP_COOLER; break;
+    #endif
     #if HAS_TEMP_ADC_1
       case TEMP_1_PIN: pin_index = TEMP_1; break;
     #endif

Marlin/src/HAL/STM32F1/msc_sd.cpp

 
 #if ENABLED(EMERGENCY_PARSER)
 
-// The original callback is not called (no way to retrieve address).
-// That callback detects a special STM32 reset sequence: this functionality is not essential
-// as M997 achieves the same.
-void my_rx_callback(unsigned int, void*) {
-  // max length of 16 is enough to contain all emergency commands
-  uint8 buf[16];
+  // The original callback is not called (no way to retrieve address).
+  // That callback detects a special STM32 reset sequence: this functionality is not essential
+  // as M997 achieves the same.
+  void my_rx_callback(unsigned int, void*) {
+    // max length of 16 is enough to contain all emergency commands
+    uint8 buf[16];
 
-  //rx is usbSerialPart.endpoints[2]
-  uint16 len = usb_get_ep_rx_count(usbSerialPart.endpoints[2].address);
-  uint32 total = composite_cdcacm_data_available();
+    //rx is usbSerialPart.endpoints[2]
+    uint16 len = usb_get_ep_rx_count(usbSerialPart.endpoints[2].address);
+    uint32 total = composite_cdcacm_data_available();
 
-  if (len == 0 || total == 0 || !WITHIN(total, len, COUNT(buf)))
-    return;
+    if (len == 0 || total == 0 || !WITHIN(total, len, COUNT(buf)))
+      return;
 
-  // cannot get character by character due to bug in composite_cdcacm_peek_ex
-  len = composite_cdcacm_peek(buf, total);
+    // cannot get character by character due to bug in composite_cdcacm_peek_ex
+    len = composite_cdcacm_peek(buf, total);
+
+    for (uint32 i = 0; i < len; i++)
+      emergency_parser.update(MarlinCompositeSerial.emergency_state, buf[i+total-len]);
+  }
 
-  for (uint32 i = 0; i < len; i++)
-    emergency_parser.update(MarlinCompositeSerial.emergency_state, buf[i+total-len]);
-}
 #endif
 
 void MSC_SD_init() {
   MarlinCompositeSerial.registerComponent();
   USBComposite.begin();
   #if ENABLED(EMERGENCY_PARSER)
-  	composite_cdcacm_set_hooks(USBHID_CDCACM_HOOK_RX, my_rx_callback);
+    composite_cdcacm_set_hooks(USBHID_CDCACM_HOOK_RX, my_rx_callback);
   #endif
 }
 

Marlin/src/core/language.h

 
 #define STR_HEATER_BED                      "bed"
 #define STR_HEATER_CHAMBER                  "chamber"
+#define STR_COOLER                          "cooler"
+#define STR_LASER_TEMP                      "laser temperature"
 
 #define STR_STOPPED_HEATER                  ", system stopped! Heater_ID: "
 #define STR_REDUNDANCY                      "Heater switched off. Temperature difference between temp sensors is too high !"

Marlin/src/feature/cooler.cpp

+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2021 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../inc/MarlinConfig.h"
+
+#if HAS_COOLER
+
+#include "cooler.h"
+Cooler cooler;
+
+uint16_t Cooler::flowrate;        // Flow meter reading in liters, 0 will result in shutdown if equiped
+uint8_t Cooler::mode = 0;         // 0 = CO2 Liquid cooling, 1 = Laser Diode TEC Heatsink Cooling
+uint16_t Cooler::capacity;        // Cooling capacity in watts
+uint16_t Cooler::load;            // Cooling load in watts
+bool Cooler::flowmeter = false;
+bool Cooler::state = false;       // on = true, off = false
+
+#endif

Marlin/src/feature/cooler.h

+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2021 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include <stdint.h>
+
+#define _MSG_COOLER(M) MSG_COOLER_##M
+#define MSG_COOLER(M) _MSG_COOLER(M)
+
+// Cooling device
+
+class Cooler {
+public:
+  static uint16_t flowrate;        // Flow meter reading in liters, 0 will result in shutdown if equiped
+  static uint8_t mode;             // 0 = CO2 Liquid cooling, 1 = Laser Diode TEC Heatsink Cooling
+  static uint16_t capacity;        // Cooling capacity in watts
+  static uint16_t load;            // Cooling load in watts
+  static bool flowmeter;
+  static bool state;               // on = true, off = false
+
+  static bool is_enabled()                    { return state; }
+  static void enable()                        { state = true; }
+  static void disable()                       { state = false; }
+  static void set_mode(const uint8_t m)       { mode = m; }
+  static void set_flowmeter(const bool sflag) { flowmeter = sflag; }
+  static uint16_t get_flowrate()              { return flowrate; }
+  static void update_flowrate(uint16_t flow)  { flowrate = flow; }
+  //static void init() { set_state(false); }
+};
+
+extern Cooler cooler;

Marlin/src/feature/power.cpp

   if (TERN0(AUTO_POWER_CHAMBER_FAN, thermalManager.chamberfan_speed))
     return true;
 
+  if (TERN0(AUTO_POWER_COOLER_FAN, thermalManager.coolerfan_speed))
+    return true;
+
   // If any of the drivers or the bed are enabled...
   if (X_ENABLE_READ() == X_ENABLE_ON || Y_ENABLE_READ() == Y_ENABLE_ON || Z_ENABLE_READ() == Z_ENABLE_ON
     #if HAS_X2_ENABLE
     if (thermalManager.degChamber() >= AUTO_POWER_CHAMBER_TEMP) return true;
   #endif
 
+  #if HAS_COOLER && AUTO_POWER_COOLER_TEMP
+    if (thermalManager.degCooler() >= AUTO_POWER_COOLER_TEMP) return true;
+  #endif
+
   return false;
 }
 

Marlin/src/gcode/calibrate/G76_M192_M871.cpp

 #include "../../module/temperature.h"
 #include "../../module/probe.h"
 #include "../../feature/probe_temp_comp.h"
-
 #include "../../lcd/marlinui.h"
-#include "../../MarlinCore.h" // for wait_for_heatup, idle()
-
-#if ENABLED(PRINTJOB_TIMER_AUTOSTART)
-  #include "../../module/printcounter.h"
-#endif
-
-#if ENABLED(PRINTER_EVENTS_LEDS)
-  #include "../../feature/leds/leds.h"
-#endif
 
 /**
  * G76: calibrate probe and/or bed temperature offsets
 
   remember_feedrate_scaling_off();
 
-
   /******************************************
    * Calibrate bed temperature offsets
    ******************************************/

Marlin/src/gcode/gcode.cpp

         case 191: M191(); break;                                  // M191: Wait for chamber temperature to reach target
       #endif
 
+      #if HAS_COOLER
+        case 143: M143(); break;                                  // M143: Set cooler temperature
+        case 193: M193(); break;                                  // M193: Wait for cooler temperature to reach target
+      #endif
+
       #if BOTH(AUTO_REPORT_TEMPERATURES, HAS_TEMP_SENSOR)
         case 155: M155(); break;                                  // M155: Set temperature auto-report interval
       #endif

Marlin/src/gcode/gcode.h

  * M129 - EtoP Closed. (Requires BARICUDA)
  * M140 - Set bed target temp. S<temp>
  * M141 - Set heated chamber target temp. S<temp> (Requires a chamber heater)
+ * M143 - Set cooler target temp. S<temp> (Requires a laser cooling device)
  * M145 - Set heatup values for materials on the LCD. H<hotend> B<bed> F<fan speed> for S<material> (0=PLA, 1=ABS)
  * M149 - Set temperature units. (Requires TEMPERATURE_UNITS_SUPPORT)
  * M150 - Set Status LED Color as R<red> U<green> B<blue> W<white> P<bright>. Values 0-255. (Requires BLINKM, RGB_LED, RGBW_LED, NEOPIXEL_LED, PCA9533, or PCA9632).
  * M166 - Set the Gradient Mix for the mixing extruder. (Requires GRADIENT_MIX)
  * M190 - S<temp> Wait for bed current temp to reach target temp. ** Wait only when heating! **
  *        R<temp> Wait for bed current temp to reach target temp. ** Wait for heating or cooling. **
+ * M193 - R<temp> Wait for cooler temp to reach target temp. ** Wait for cooling. **
  * M200 - Set filament diameter, D<diameter>, setting E axis units to cubic. (Use S0 to revert to linear units.)
  * M201 - Set max acceleration in units/s^2 for print moves: "M201 X<accel> Y<accel> Z<accel> E<accel>"
  * M202 - Set max acceleration in units/s^2 for travel moves: "M202 X<accel> Y<accel> Z<accel> E<accel>" ** UNUSED IN MARLIN! **
     static void M191();
   #endif
 
+  #if HAS_COOLER
+    static void M143();
+    static void M193();
+  #endif
+
   #if PREHEAT_COUNT
     static void M145();
   #endif

Marlin/src/gcode/host/M115.cpp

     // CHAMBER_TEMPERATURE (M141, M191)
     cap_line(PSTR("CHAMBER_TEMPERATURE"), ENABLED(HAS_HEATED_CHAMBER));
 
+    // COOLER_TEMPERATURE (M143, M193)
+    cap_line(PSTR("COOLER_TEMPERATURE"), ENABLED(HAS_COOLER));
+
     // MEATPACK Compresson
     cap_line(PSTR("MEATPACK"), ENABLED(MEATPACK));
 

Marlin/src/gcode/temp/M140_M190.cpp

 
 #include "../gcode.h"
 #include "../../module/temperature.h"
-#include "../../module/motion.h"
 #include "../../lcd/marlinui.h"
 
-#if ENABLED(PRINTJOB_TIMER_AUTOSTART)
-  #include "../../module/printcounter.h"
-#endif
-
-#if ENABLED(PRINTER_EVENT_LEDS)
-  #include "../../feature/leds/leds.h"
-#endif
-
-#include "../../MarlinCore.h" // for wait_for_heatup, idle, startOrResumeJob
-
 /**
  * M140: Set bed temperature
  *

Marlin/src/gcode/temp/M141_M191.cpp

 
 #include "../gcode.h"
 #include "../../module/temperature.h"
-
-#include "../../module/motion.h"
 #include "../../lcd/marlinui.h"
 
-#if ENABLED(PRINTJOB_TIMER_AUTOSTART)
-  #include "../../module/printcounter.h"
-#endif
-
-#if ENABLED(PRINTER_EVENT_LEDS)
-  #include "../../feature/leds/leds.h"
-#endif
-
-#include "../../MarlinCore.h" // for wait_for_heatup, idle, startOrResumeJob
-
 /**
  * M141: Set chamber temperature
  */

Marlin/src/gcode/temp/M143_M193.cpp

+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2021 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+/**
+ * gcode/temp/M143_M193.cpp
+ *
+ * Laser Cooler target temperature control
+ */
+
+#include "../../inc/MarlinConfig.h"
+
+#if HAS_COOLER
+
+#include "../../feature/cooler.h"
+extern Cooler cooler;
+
+#include "../gcode.h"
+#include "../../module/temperature.h"
+#include "../../lcd/marlinui.h"
+
+/**
+ * M143: Set cooler temperature
+ */
+void GcodeSuite::M143() {
+  if (DEBUGGING(DRYRUN)) return;
+  if (parser.seenval('S')) {
+    thermalManager.setTargetCooler(parser.value_celsius());
+    parser.value_celsius() ? cooler.enable() : cooler.disable();
+  }
+}
+
+/**
+ * M193: Sxxx Wait for laser current temp to reach target temp. Waits only when cooling.
+ */
+void GcodeSuite::M193() {
+  if (DEBUGGING(DRYRUN)) return;
+
+  if (parser.seenval('S')) {
+    cooler.enable();
+    thermalManager.setTargetCooler(parser.value_celsius());
+    if (thermalManager.isLaserCooling()) {
+      ui.set_status_P(GET_TEXT(MSG_LASER_COOLING));
+      thermalManager.wait_for_cooler(true);
+    }
+  }
+}
+
+#endif // HAS_COOLER

Marlin/src/inc/Conditionals_adv.h

   #undef THERMAL_PROTECTION_CHAMBER
 #endif
 
+#if TEMP_SENSOR_COOLER == 0
+  #undef THERMAL_PROTECTION_COOLER
+#endif
+
 #if ENABLED(MIXING_EXTRUDER) && (ENABLED(RETRACT_SYNC_MIXING) || BOTH(FILAMENT_LOAD_UNLOAD_GCODES, FILAMENT_UNLOAD_ALL_EXTRUDERS))
   #define HAS_MIXER_SYNC_CHANNEL 1
 #endif

Marlin/src/inc/Conditionals_post.h

  * Temp Sensor defines
  */
 
-#define ANY_TEMP_SENSOR_IS(n) (TEMP_SENSOR_0 == (n) || TEMP_SENSOR_1 == (n) || TEMP_SENSOR_2 == (n) || TEMP_SENSOR_3 == (n) || TEMP_SENSOR_4 == (n) || TEMP_SENSOR_5 == (n) || TEMP_SENSOR_6 == (n) || TEMP_SENSOR_7 == (n) || TEMP_SENSOR_BED == (n) || TEMP_SENSOR_PROBE == (n) || TEMP_SENSOR_CHAMBER == (n))
+#define ANY_TEMP_SENSOR_IS(n) (TEMP_SENSOR_0 == (n) || TEMP_SENSOR_1 == (n) || TEMP_SENSOR_2 == (n) || TEMP_SENSOR_3 == (n) || TEMP_SENSOR_4 == (n) || TEMP_SENSOR_5 == (n) || TEMP_SENSOR_6 == (n) || TEMP_SENSOR_7 == (n) || TEMP_SENSOR_BED == (n) || TEMP_SENSOR_PROBE == (n) || TEMP_SENSOR_CHAMBER == (n) || TEMP_SENSOR_COOLER == (n))
 
 #if ANY_TEMP_SENSOR_IS(1000)
   #define HAS_USER_THERMISTORS 1
   #undef CHAMBER_MAXTEMP
 #endif
 
+#if TEMP_SENSOR_COOLER == -4
+  #define COOLER_USES_AD8495 1
+#elif TEMP_SENSOR_COOLER == -3
+  #error "MAX31855 Thermocouples (-3) not supported for TEMP_SENSOR_COOLER."
+#elif TEMP_SENSOR_COOLER == -2
+  #error "MAX6675 Thermocouples (-2) not supported for TEMP_SENSOR_COOLER."
+#elif TEMP_SENSOR_COOLER == -1
+  #define COOLER_USES_AD595 1
+#elif TEMP_SENSOR_COOLER > 0
+  #define TEMP_SENSOR_COOLER_THERMISTOR_ID TEMP_SENSOR_COOLER
+  #define TEMP_SENSOR_COOLER_IS_THERMISTOR 1
+  #if TEMP_SENSOR_COOLER == 1000
+    #define COOLER_USER_THERMISTOR 1
+  #elif TEMP_SENSOR_COOLER == 998 || TEMP_SENSOR_COOLER == 999
+    #define COOLER_DUMMY_THERMISTOR 1
+  #endif
+#else
+  #undef COOLER_MINTEMP
+  #undef COOLER_MAXTEMP
+#endif
+
 #if TEMP_SENSOR_PROBE == -4
   #define TEMP_SENSOR_PROBE_IS_AD8495 1
 #elif TEMP_SENSOR_PROBE == -3
 #if HAS_ADC_TEST(CHAMBER)
   #define HAS_TEMP_ADC_CHAMBER 1
 #endif
+#if HAS_ADC_TEST(COOLER)
+  #define HAS_TEMP_ADC_COOLER 1
+#endif
 
 #define HAS_TEMP(N) ANY(HAS_TEMP_ADC_##N, TEMP_SENSOR_##N##_IS_MAX_TC, TEMP_SENSOR_##N##_IS_DUMMY)
 #if HAS_HOTEND && HAS_TEMP(0)
 #if HAS_TEMP(CHAMBER)
   #define HAS_TEMP_CHAMBER 1
 #endif
+#if HAS_TEMP(COOLER)
+  #define HAS_TEMP_COOLER 1
+#endif
 
 #if ENABLED(JOYSTICK)
   #if PIN_EXISTS(JOY_X)
 #if HAS_HEATED_BED || HAS_TEMP_CHAMBER
   #define BED_OR_CHAMBER 1
 #endif
-#if HAS_TEMP_HOTEND || BED_OR_CHAMBER || HAS_TEMP_PROBE
+#if HAS_TEMP_COOLER && PIN_EXISTS(COOLER)
+  #define HAS_COOLER 1
+#endif
+#if HAS_TEMP_HOTEND || BED_OR_CHAMBER || HAS_TEMP_PROBE || HAS_TEMP_COOLER
   #define HAS_TEMP_SENSOR 1
 #endif
 
 #if BOTH(HAS_HEATED_CHAMBER, THERMAL_PROTECTION_CHAMBER) && WATCH_CHAMBER_TEMP_PERIOD > 0
   #define WATCH_CHAMBER 1
 #endif
+#if BOTH(HAS_COOLER, THERMAL_PROTECTION_COOLER) && WATCH_COOLER_TEMP_PERIOD > 0
+  #define WATCH_COOLER 1
+#endif
 #if  (ENABLED(THERMAL_PROTECTION_HOTENDS) || !EXTRUDERS) \
   && (ENABLED(THERMAL_PROTECTION_BED)     || !HAS_HEATED_BED) \
-  && (ENABLED(THERMAL_PROTECTION_CHAMBER) || !HAS_HEATED_CHAMBER)
+  && (ENABLED(THERMAL_PROTECTION_CHAMBER) || !HAS_HEATED_CHAMBER) \
+  && (ENABLED(THERMAL_PROTECTION_COOLER) || !HAS_COOLER)
   #define THERMALLY_SAFE 1
 #endif
 
 #if HAS_TEMP_CHAMBER && PIN_EXISTS(CHAMBER_AUTO_FAN)
   #define HAS_AUTO_CHAMBER_FAN 1
 #endif
+#if HAS_TEMP_COOLER && PIN_EXISTS(COOLER_AUTO_FAN)
+  #define HAS_AUTO_COOLER_FAN 1
+#endif
 
-#if ANY(HAS_AUTO_FAN_0, HAS_AUTO_FAN_1, HAS_AUTO_FAN_2, HAS_AUTO_FAN_3, HAS_AUTO_FAN_4, HAS_AUTO_FAN_5, HAS_AUTO_FAN_6, HAS_AUTO_FAN_7, HAS_AUTO_CHAMBER_FAN)
+#if ANY(HAS_AUTO_FAN_0, HAS_AUTO_FAN_1, HAS_AUTO_FAN_2, HAS_AUTO_FAN_3, HAS_AUTO_FAN_4, HAS_AUTO_FAN_5, HAS_AUTO_FAN_6, HAS_AUTO_FAN_7, HAS_AUTO_CHAMBER_FAN, HAS_AUTO_COOLER_FAN)
   #define HAS_AUTO_FAN 1
 #endif
 #define _FANOVERLAP(A,B) (A##_AUTO_FAN_PIN == E##B##_AUTO_FAN_PIN)
   #define WRITE_HEATER_CHAMBER(v) WRITE(HEATER_CHAMBER_PIN, (v) ^ HEATER_CHAMBER_INVERTING)
 #endif
 
-#if HAS_HOTEND || HAS_HEATED_BED || HAS_HEATED_CHAMBER
+/**
+ * Laser Cooling requires settings
+ */
+#if HAS_COOLER
+  #ifndef MAX_COOLER_POWER
+    #define MAX_COOLER_POWER 255
+  #endif
+  #ifndef COOLER_INVERTING
+    #define COOLER_INVERTING true
+  #endif
+  #define WRITE_HEATER_COOLER(v) WRITE(COOLER_PIN, (v) ^ COOLER_INVERTING)
+#endif
+
+#if HAS_HOTEND || HAS_HEATED_BED || HAS_HEATED_CHAMBER || HAS_COOLER
   #define HAS_TEMPERATURE 1
 #endif
 

Marlin/src/inc/SanityCheck.h

   #error "TEMP_SENSOR_CHAMBER requires TEMP_CHAMBER_PIN."
 #endif
 
+#if TEMP_SENSOR_COOLER && !(PIN_EXISTS(TEMP_COOLER) && ENABLED(LASER_FEATURE))
+  #error "TEMP_SENSOR_COOLER requires LASER_FEATURE and TEMP_COOLER_PIN."
+#endif
+
 #if ENABLED(CHAMBER_FAN) && !(defined(CHAMBER_FAN_MODE) && WITHIN(CHAMBER_FAN_MODE, 0, 2))
   #error "CHAMBER_FAN_MODE must be between 0 and 2."
 #endif

Marlin/src/lcd/dogm/dogm_Statusscreen.h

 #endif
 
 //
+// Laser Cooler
+//
+#if !STATUS_COOLER_WIDTH && HAS_COOLER
+  #include "status/cooler.h"
+#endif
+#ifndef STATUS_COOLER_WIDTH
+  #define STATUS_COOLER_WIDTH 0
+#endif
+
+//
 // Bed
 //
 #if !STATUS_BED_WIDTH && HAS_HEATED_BED && DISABLED(STATUS_COMBINE_HEATERS)
 #endif
 
 //
+// Cooler Bitmap Properties
+//
+#ifndef STATUS_COOLER_BYTEWIDTH
+  #define STATUS_COOLER_BYTEWIDTH BW(STATUS_COOLER_WIDTH)
+#endif
+#if STATUS_COOLER_WIDTH
+
+  #ifndef STATUS_COOLER_X
+    #define STATUS_COOLER_X (LCD_PIXEL_WIDTH - (STATUS_COOLER_BYTEWIDTH + STATUS_FAN_BYTEWIDTH + STATUS_CUTTER_BYTEWIDTH) * 8)
+  #endif
+
+  #ifndef STATUS_COOLER_HEIGHT
+    #ifdef STATUS_COOLER_ANIM
+      #define STATUS_COOLER_HEIGHT(S) ((S) ? sizeof(status_cooler_on_bmp) / (STATUS_COOLER_BYTEWIDTH) : sizeof(status_cooler_bmp) / (STATUS_COOLER_BYTEWIDTH))
+    #else
+      #define STATUS_COOLER_HEIGHT(S) (sizeof(status_cooler_bmp) / (STATUS_COOLER_BYTEWIDTH))
+    #endif
+  #endif
+
+  #ifndef STATUS_COOLER_Y
+    #define STATUS_COOLER_Y(S) (18 - STATUS_COOLER_HEIGHT(S))
+  #endif
+
+  #ifndef STATUS_COOLER_TEXT_X
+    #define STATUS_COOLER_TEXT_X (STATUS_COOLER_X + 8)
+  #endif
+
+  static_assert(
+    sizeof(status_cooler_bmp) == (STATUS_COOLER_BYTEWIDTH) * (STATUS_COOLER_HEIGHT(0)),
+    "Status cooler bitmap (status_cooler_bmp) dimensions don't match data."
+  );
+  #ifdef STATUS_COOLER_ANIM
+    static_assert(
+      sizeof(status_cooler_on_bmp) == (STATUS_COOLER_BYTEWIDTH) * (STATUS_COOLER_HEIGHT(1)),
+      "Status cooler bitmap (status_cooler_on_bmp) dimensions don't match data."
+    );
+  #endif
+
+#endif
+
+//
 // Bed Bitmap Properties
 //
 #ifndef STATUS_BED_BYTEWIDTH
 #if HAS_CUTTER && !DO_DRAW_BED
   #define DO_DRAW_CUTTER 1
 #endif
+#if HAS_COOLER
+  #define DO_DRAW_COOLER 1
+#endif
+
 #if HAS_TEMP_CHAMBER && STATUS_CHAMBER_WIDTH && HOTENDS <= 4
   #define DO_DRAW_CHAMBER 1
 #endif
 #if BOTH(DO_DRAW_CUTTER, STATUS_CUTTER_ANIM)
   #define ANIM_CUTTER 1
 #endif
+#if BOTH(DO_DRAW_COOLER, STATUS_COOLER_ANIM)
+  #define ANIM_COOLER 1
+#endif
 #if ANIM_HOTEND || ANIM_BED || ANIM_CHAMBER || ANIM_CUTTER
   #define ANIM_HBCC 1
 #endif

Marlin/src/lcd/dogm/status/cooler.h

+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+//
+// lcd/dogm/status/cooler.h - Status Screen Laser Cooler bitmaps
+//
+
+#define STATUS_COOLER_WIDTH 16
+
+#ifdef STATUS_COOLER_ANIM
+
+  const unsigned char status_cooler_on_bmp[] PROGMEM = {
+    B00010000,B00001000,
+    B00010010,B01001001,
+    B01010100,B00101010,
+    B00111000,B00011100,
+    B11111110,B11111111,
+    B00111000,B00011100,
+    B01010100,B00101010,
+    B10010000,B10001001,
+    B00010000,B10000000,
+    B00000100,B10010000,
+    B00000010,B10100000,
+    B00000001,B11000000,
+    B00011111,B11111100,
+    B00000001,B11000000,
+    B00000010,B10100000,
+    B00000100,B10010000
+  };
+
+#endif
+
+const unsigned char status_cooler_bmp[] PROGMEM = {
+  B00010000,B00001000,
+  B00010010,B01001001,
+  B01010100,B00101010,
+  B00101000,B00010100,
+  B11000111,B01100011,
+  B00101000,B00010100,
+  B01010100,B00101010,
+  B10010000,B10001001,
+  B00010000,B10000000,
+  B00000100,B10010000,
+  B00000010,B10100000,
+  B00000001,B01000000,
+  B00011110,B00111100,
+  B00000001,B01000000,
+  B00000010,B10100000,
+  B00000100,B10010000
+};

Marlin/src/lcd/dogm/status_screen_DOGM.cpp

     HEATBIT_HOTEND,
     HEATBIT_BED = HOTENDS,
     HEATBIT_CHAMBER,
+    HEATBIT_COOLER,
     HEATBIT_CUTTER
   };
   IF<(HEATBIT_CUTTER > 7), uint16_t, uint8_t>::type heat_bits;
 #else
   #define CUTTER_ALT() false
 #endif
+#if ANIM_COOLER
+  #define COOLER_ALT(N) TEST(heat_bits, HEATBIT_COOLER)
+#else
+  #define COOLER_ALT() false
+#endif
 
 #if DO_DRAW_HOTENDS
   #define MAX_HOTEND_DRAW _MIN(HOTENDS, ((LCD_PIXEL_WIDTH - (STATUS_LOGO_BYTEWIDTH + STATUS_FAN_BYTEWIDTH) * 8) / (STATUS_HEATERS_XSPACE)))
 #endif // DO_DRAW_BED
 
 #if DO_DRAW_CHAMBER
-
   FORCE_INLINE void _draw_chamber_status() {
     #if HAS_HEATED_CHAMBER
       if (PAGE_UNDER(7))
         _draw_centered_temp(thermalManager.degTargetChamber() + 0.5f, STATUS_CHAMBER_TEXT_X, 7);
     #endif
-
     if (PAGE_CONTAINS(28 - INFO_FONT_ASCENT, 28 - 1))
       _draw_centered_temp(thermalManager.degChamber() + 0.5f, STATUS_CHAMBER_TEXT_X, 28);
   }
+#endif
 
-#endif // DO_DRAW_CHAMBER
+#if DO_DRAW_COOLER
+  FORCE_INLINE void _draw_cooler_status() {
+    if (PAGE_CONTAINS(28 - INFO_FONT_ASCENT, 28 - 1))
+      _draw_centered_temp(thermalManager.degCooler(), STATUS_COOLER_TEXT_X, 28);
+  }
+#endif
 
 //
 // Before homing, blink '123' <-> '???'.
       #if DO_DRAW_CHAMBER && HAS_HEATED_CHAMBER
         if (thermalManager.isHeatingChamber()) SBI(new_bits, HEATBIT_CHAMBER);
       #endif
+      #if DO_DRAW_COOLER && HAS_COOLER
+        if (thermalManager.isLaserCooling()) SBI(new_bits, HEATBIT_COOLER);
+      #endif
       if (TERN0(ANIM_CUTTER, cutter.enabled())) SBI(new_bits, HEATBIT_CUTTER);
       heat_bits = new_bits;
     #endif
       }
     #endif
 
+    // Laser Cooler
+    #if DO_DRAW_COOLER
+      #if ANIM_COOLER
+        #define COOLER_BITMAP(S) ((S) ? status_cooler_bmp : status_cooler_on_bmp)
+      #else
+        #define COOLER_BITMAP(S) status_cooler_bmp
+      #endif
+      const uint8_t coolery = STATUS_COOLER_Y(COOLER_ALT()),
+                    coolerh = STATUS_COOLER_HEIGHT(COOLER_ALT());
+      if (PAGE_CONTAINS(coolery, coolery + coolerh - 1))
+        u8g.drawBitmapP(STATUS_COOLER_X, coolery, STATUS_COOLER_BYTEWIDTH, coolerh, COOLER_BITMAP(COOLER_ALT()));
+    #endif
+
     // Heated Bed
     TERN_(DO_DRAW_BED, _draw_bed_status(blink));
 
     // Heated Chamber
     TERN_(DO_DRAW_CHAMBER, _draw_chamber_status());
 
+    // Cooler
+    TERN_(DO_DRAW_COOLER, _draw_cooler_status());
+
     // Fan, if a bitmap was provided
     #if DO_DRAW_FAN
       if (PAGE_CONTAINS(STATUS_FAN_TEXT_Y - INFO_FONT_ASCENT, STATUS_FAN_TEXT_Y - 1)) {

Marlin/src/lcd/extui/ui_api.cpp

           case BED: thermalManager.reset_bed_idle_timer(); return;
         #endif
         TERN_(HAS_HEATED_CHAMBER, case CHAMBER: return); // Chamber has no idle timer
+        TERN_(HAS_COOLER, case COOLER: return); // Cooler has no idle timer
         default:
           TERN_(HAS_HOTEND, thermalManager.reset_hotend_idle_timer(heater - H0));
           break;
       value *= TOUCH_UI_LCD_TEMP_SCALING;
     #endif
     enableHeater(heater);
-    #if HAS_HEATED_CHAMBER
-      if (heater == CHAMBER)
-        thermalManager.setTargetChamber(LROUND(constrain(value, 0, CHAMBER_MAXTEMP - 10)));
-      else
-    #endif
-    #if HAS_HEATED_BED
-      if (heater == BED)
-        thermalManager.setTargetBed(LROUND(constrain(value, 0, BED_MAX_TARGET)));
-      else
-    #endif
-      {
+    switch (heater) {
+      #if HAS_HEATED_CHAMBER
+        case CHAMBER: thermalManager.setTargetChamber(LROUND(constrain(value, 0, CHAMBER_MAXTEMP - 10))); break;
+      #endif
+      #if HAS_COOLER
+        case COOLER: thermalManager.setTargetCooler(LROUND(constrain(value, 0, COOLER_MAXTEMP))); break;
+      #endif
+      #if HAS_HEATED_BED
+        case BED: thermalManager.setTargetBed(LROUND(constrain(value, 0, BED_MAX_TARGET))); break;
+      #endif
+      default: {
         #if HAS_HOTEND
           const int16_t e = heater - H0;
           thermalManager.setTargetHotend(LROUND(constrain(value, 0, thermalManager.heater_maxtemp[e] - HOTEND_OVERSHOOT)), e);
         #endif
-      }
+      } break;
+    }
   }
 
   void setTargetTemp_celsius(float value, const extruder_t extruder) {

Marlin/src/lcd/extui/ui_api.h

 
   enum axis_t     : uint8_t { X, Y, Z, X2, Y2, Z2, Z3, Z4 };
   enum extruder_t : uint8_t { E0, E1, E2, E3, E4, E5, E6, E7 };
-  enum heater_t   : uint8_t { H0, H1, H2, H3, H4, H5, BED, CHAMBER };
+  enum heater_t   : uint8_t { H0, H1, H2, H3, H4, H5, BED, CHAMBER, COOLER };
   enum fan_t      : uint8_t { FAN0, FAN1, FAN2, FAN3, FAN4, FAN5, FAN6, FAN7 };
   enum result_t   : uint8_t { PID_BAD_EXTRUDER_NUM, PID_TEMP_TOO_HIGH, PID_TUNING_TIMEOUT, PID_DONE };
 

Marlin/src/lcd/language/language_en.h

   PROGMEM Language_Str MSG_NOZZLE_STANDBY                  = _UxGT("Nozzle Standby");
   PROGMEM Language_Str MSG_BED                             = _UxGT("Bed");
   PROGMEM Language_Str MSG_CHAMBER                         = _UxGT("Enclosure");
+  PROGMEM Language_Str MSG_COOLER                          = _UxGT("Laser Coolant");
+  PROGMEM Language_Str MSG_COOLER_TOGGLE                   = _UxGT("Toggle Cooler");
+  PROGMEM Language_Str MSG_LASER                           = _UxGT("Laser");
   PROGMEM Language_Str MSG_FAN_SPEED                       = _UxGT("Fan Speed");
   PROGMEM Language_Str MSG_FAN_SPEED_N                     = _UxGT("Fan Speed ~");
   PROGMEM Language_Str MSG_STORED_FAN_N                    = _UxGT("Stored Fan ~");
   PROGMEM Language_Str MSG_THERMAL_RUNAWAY                 = _UxGT("THERMAL RUNAWAY");
   PROGMEM Language_Str MSG_THERMAL_RUNAWAY_BED             = _UxGT("BED THERMAL RUNAWAY");
   PROGMEM Language_Str MSG_THERMAL_RUNAWAY_CHAMBER         = _UxGT("CHAMBER T. RUNAWAY");
+  PROGMEM Language_Str MSG_THERMAL_RUNAWAY_COOLER          = _UxGT("Cooler Runaway");
+  PROGMEM Language_Str MSG_COOLING_FAILED                  = _UxGT("Cooling Failed");
   PROGMEM Language_Str MSG_ERR_MAXTEMP                     = _UxGT("Err: MAXTEMP");
   PROGMEM Language_Str MSG_ERR_MINTEMP                     = _UxGT("Err: MINTEMP");
   PROGMEM Language_Str MSG_HALTED                          = _UxGT("PRINTER HALTED");
   PROGMEM Language_Str MSG_PROBE_COOLING                   = _UxGT("Probe Cooling...");
   PROGMEM Language_Str MSG_CHAMBER_HEATING                 = _UxGT("Chamber Heating...");
   PROGMEM Language_Str MSG_CHAMBER_COOLING                 = _UxGT("Chamber Cooling...");
+  PROGMEM Language_Str MSG_LASER_COOLING                   = _UxGT("Laser Cooling...");
   PROGMEM Language_Str MSG_DELTA_CALIBRATE                 = _UxGT("Delta Calibration");
   PROGMEM Language_Str MSG_DELTA_CALIBRATE_X               = _UxGT("Calibrate X");
   PROGMEM Language_Str MSG_DELTA_CALIBRATE_Y               = _UxGT("Calibrate Y");

Marlin/src/lcd/menu/menu_info.cpp

     STATIC_ITEM(TERN(WATCH_CHAMBER, MSG_INFO_RUNAWAY_ON, MSG_INFO_RUNAWAY_OFF), SS_LEFT);
   #endif
 
+  #if HAS_COOLER
+    #undef THERMISTOR_ID
+    #define THERMISTOR_ID TEMP_SENSOR_COOLER
+    #include "../thermistornames.h"
+    STATIC_ITEM_P(PSTR("COOL: " THERMISTOR_NAME), SS_INVERT);
+    PSTRING_ITEM(MSG_INFO_MIN_TEMP, STRINGIFY(COOLER_MINTEMP), SS_LEFT);
+    PSTRING_ITEM(MSG_INFO_MAX_TEMP, STRINGIFY(COOLER_MAXTEMP), SS_LEFT);
+    STATIC_ITEM(TERN(WATCH_COOLER, MSG_INFO_RUNAWAY_ON, MSG_INFO_RUNAWAY_OFF), SS_LEFT);
+  #endif
+
   END_SCREEN();
 }
 

Marlin/src/lcd/menu/menu_temperature.cpp

   #include "../../module/motion.h"
 #endif
 
+#if HAS_COOLER
+  #include "../../feature/cooler.h"
+#endif
+
 #if ENABLED(SINGLENOZZLE_STANDBY_TEMP)
   #include "../../module/tool_change.h"
 #endif
   #if HAS_HEATED_BED
     inline void _preheat_bed(const uint8_t m) { thermalManager.lcd_preheat(-1, -1, m); }
   #endif
+  #if HAS_COOLER
+    inline void _precool_laser(const uint8_t m, const uint8_t e) { thermalManager.lcd_preheat(e, m, -1); }
+    void do_precool_laser_m() { _precool_laser(editable.int8, thermalManager.temp_cooler.target); }
+  #endif
 
   #if HAS_TEMP_HOTEND && HAS_HEATED_BED
     inline void _preheat_both(const uint8_t m, const uint8_t e) { thermalManager.lcd_preheat(e, m, m); }
     #endif
   #endif
 
+  #if HAS_COOLER
+    if (thermalManager.temp_cooler.target == 0) thermalManager.temp_cooler.target = COOLER_DEFAULT_TEMP;
+  #endif
+
   START_MENU();
   BACK_ITEM(MSG_MAIN);
 
   #endif
 
   //
+  // Cooler:
+  //
+  #if HAS_COOLER
+    editable.state = cooler.is_enabled();
+    EDIT_ITEM(bool, MSG_COOLER(TOGGLE), &cooler.state, []{ if (editable.state) cooler.disable(); else cooler.enable(); });
+    EDIT_ITEM_FAST(int3, MSG_COOLER, &thermalManager.temp_cooler.target, COOLER_MINTEMP + 2, COOLER_MAXTEMP - 2, thermalManager.start_watching_cooler);
+  #endif
+
+  //
   // Fan Speed:
   //
   #if HAS_FAN
       editable.int8 = m;
       #if HOTENDS > 1 || HAS_HEATED_BED
         SUBMENU_S(ui.get_preheat_label(m), MSG_PREHEAT_M, menu_preheat_m);
-      #else
+      #elif HAS_HOTEND
         ACTION_ITEM_S(ui.get_preheat_label(m), MSG_PREHEAT_M, do_preheat_end_m);
       #endif
     }

Marlin/src/lcd/tft/tft_color.h

 #ifndef COLOR_CHAMBER
   #define COLOR_CHAMBER           COLOR_DARK_ORANGE
 #endif
+#ifndef COLOR_COOLER
+  #define COLOR_COOLER            COLOR_DARK_ORANGE
+#endif
 #ifndef COLOR_FAN
   #define COLOR_FAN               COLOR_AQUA
 #endif

Marlin/src/lcd/tft/touch.cpp

           MenuItem_int3::action((const char *)GET_TEXT_F(MSG_CHAMBER), &thermalManager.temp_chamber.target, 0, CHAMBER_MAXTEMP - 10, thermalManager.start_watching_chamber);
         }
       #endif
+      #if HAS_COOLER
+        else if (heater == H_COOLER) {
+          MenuItem_int3::action((const char *)GET_TEXT_F(MSG_COOLER), &thermalManager.temp_cooler.target, 0, COOLER_MAXTEMP - 8, thermalManager.start_watching_cooler);
+        }
+      #endif
+
       break;
     case FAN:
       ui.clear_lcd();

Marlin/src/lcd/tft/ui_320x240.cpp

       #endif
     }
   #endif
+  #if HAS_TEMP_COOLER
+    else if (Heater == H_COOLER) {
+      currentTemperature = thermalManager.degCooler();
+      targetTemperature = TERN(HAS_COOLER, thermalManager.degTargetCooler(), ABSOLUTE_ZERO);
+    }
+  #endif
   else return;
 
   TERN_(TOUCH_SCREEN, if (targetTemperature >= 0) touch.add_control(HEATER, x, y, 64, 100, Heater));
       image = targetTemperature > 0 ? imgChamberHeated : imgChamber;
     }
   #endif
+  #if HAS_TEMP_COOLER
+    else if (Heater == H_COOLER) {
+      if (currentTemperature <= 26) Color = COLOR_COLD;
+      if (currentTemperature > 26) Color = COLOR_RED;
+      image = targetTemperature > 26 ? imgCoolerHot : imgCooler;
+    }
+  #endif
 
   tft.add_image(0, 18, image, Color);
 

Marlin/src/lcd/tft/ui_480x320.cpp

       #endif
     }
   #endif
+  #if HAS_TEMP_COOLER
+    else if (Heater == H_COOLER) {
+      currentTemperature = thermalManager.degCooler();
+      targetTemperature = TERN(HAS_COOLER, thermalManager.degTargetCooler(), ABSOLUTE_ZERO);
+    }
+  #endif
   else return;
 
   TERN_(TOUCH_SCREEN, if (targetTemperature >= 0) touch.add_control(HEATER, x, y, 80, 120, Heater));

Marlin/src/lcd/tft/ui_common.h

   #define ITEM_CHAMBER    2
   #define ITEM_FAN        3
   #define ITEMS_COUNT     4
+#elif HAS_TEMP_COOLER
+  #define ITEM_COOLER     0
+  #define ITEM_FAN        1
+  #define ITEMS_COUNT     2
 #elif HOTENDS > 1
   #define ITEM_E0         0
   #define ITEM_E1         1

Marlin/src/module/temperature.cpp

 #include "endstops.h"
 #include "planner.h"
 
+#if HAS_COOLER
+  #include "../feature/cooler.h"
+  #include "../feature/spindle_laser.h"
+#endif
+
 #if ENABLED(EMERGENCY_PARSER)
   #include "motion.h"
 #endif
 #else
   #define _CHAMBER_PSTR(h)
 #endif
+#if HAS_COOLER
+  #define _COOLER_PSTR(h) (h) == H_COOLER ? GET_TEXT(MSG_COOLER) :
+#else
+  #define _COOLER_PSTR(h)
+#endif
 #define _E_PSTR(h,N) ((HOTENDS) > N && (h) == N) ? PSTR(LCD_STR_E##N) :
-#define HEATER_PSTR(h) _BED_PSTR(h) _CHAMBER_PSTR(h) _E_PSTR(h,1) _E_PSTR(h,2) _E_PSTR(h,3) _E_PSTR(h,4) _E_PSTR(h,5) PSTR(LCD_STR_E0)
+#define HEATER_PSTR(h) _BED_PSTR(h) _CHAMBER_PSTR(h) _COOLER_PSTR(h) _E_PSTR(h,1) _E_PSTR(h,2) _E_PSTR(h,3) _E_PSTR(h,4) _E_PSTR(h,5) PSTR(LCD_STR_E0)
 
 // public:
 
   uint8_t Temperature::chamberfan_speed; // = 0
 #endif
 
+#if ENABLED(AUTO_POWER_COOLER_FAN)
+  uint8_t Temperature::coolerfan_speed; // = 0
+#endif
 #if HAS_FAN
 
   uint8_t Temperature::fan_speed[FAN_COUNT]; // = { 0 }
   #endif
   TERN_(WATCH_BED, bed_watch_t Temperature::watch_bed); // = { 0 }
   IF_DISABLED(PIDTEMPBED, millis_t Temperature::next_bed_check_ms);
-#endif // HAS_HEATED_BED
+#endif
 
 #if HAS_TEMP_CHAMBER
   chamber_info_t Temperature::temp_chamber; // = { 0 }
   #if HAS_HEATED_CHAMBER
-    int16_t fan_chamber_pwm;
-    bool flag_chamber_off;
-    bool flag_chamber_excess_heat = false;
     millis_t next_cool_check_ms_2 = 0;
     float old_temp = 9999;
     #ifdef CHAMBER_MINTEMP
     #endif
     TERN_(WATCH_CHAMBER, chamber_watch_t Temperature::watch_chamber{0});
     IF_DISABLED(PIDTEMPCHAMBER, millis_t Temperature::next_chamber_check_ms);
-  #endif // HAS_HEATED_CHAMBER
-#endif // HAS_TEMP_CHAMBER
+  #endif
+#endif
+
+#if HAS_TEMP_COOLER
+  cooler_info_t Temperature::temp_cooler; // = { 0 }
+  #if HAS_COOLER
+    bool flag_cooler_state;
+    //bool flag_cooler_excess = false;
+    float previous_temp = 9999;
+    #ifdef COOLER_MINTEMP
+      int16_t Temperature::mintemp_raw_COOLER = TEMP_SENSOR_COOLER_RAW_LO_TEMP;
+    #endif
+    #ifdef COOLER_MAXTEMP
+      int16_t Temperature::maxtemp_raw_COOLER = TEMP_SENSOR_COOLER_RAW_HI_TEMP;
+    #endif
+    #if WATCH_COOLER
+      cooler_watch_t Temperature::watch_cooler{0};
+    #endif
+    millis_t Temperature::next_cooler_check_ms, Temperature::cooler_fan_flush_ms;
+  #endif
+#endif
 
 #if HAS_TEMP_PROBE
   probe_info_t Temperature::temp_probe; // = { 0 }
     #if HAS_HEATED_CHAMBER
       case H_CHAMBER: return temp_chamber.soft_pwm_amount;
     #endif
+    #if HAS_COOLER
+      case H_COOLER: return temp_cooler.soft_pwm_amount;
+    #endif
     default:
       return TERN0(HAS_HOTEND, temp_hotend[heater_id].soft_pwm_amount);
   }
         SBI(fanState, pgm_read_byte(&fanBit[CHAMBER_FAN_INDEX]));
     #endif
 
+    #if HAS_AUTO_COOLER_FAN
+      if (temp_cooler.celsius >= COOLER_AUTO_FAN_TEMPERATURE)
+        SBI(fanState, pgm_read_byte(&fanBit[COOLER_FAN_INDEX]));
+    #endif
+
     #define _UPDATE_AUTO_FAN(P,D,A) do{                  \
       if (PWM_PIN(P##_AUTO_FAN_PIN) && A < 255)          \
         analogWrite(pin_t(P##_AUTO_FAN_PIN), D ? A : 0); \
       SERIAL_ECHO(heater_id);
     else if (TERN0(HAS_HEATED_CHAMBER, heater_id == H_CHAMBER))
       SERIAL_ECHOPGM(STR_HEATER_CHAMBER);
+    else if (TERN0(HAS_COOLER, heater_id == H_COOLER))
+      SERIAL_ECHOPGM(STR_COOLER);
     else
       SERIAL_ECHOPGM(STR_HEATER_BED);
     SERIAL_EOL();
       }
     #endif
 
+    #if EITHER(CHAMBER_FAN, CHAMBER_VENT) || DISABLED(PIDTEMPCHAMBER)
+      static bool flag_chamber_excess_heat; // = false;
+    #endif
+
     #if EITHER(CHAMBER_FAN, CHAMBER_VENT)
+      static bool flag_chamber_off; // = false
+
       if (temp_chamber.target > CHAMBER_MINTEMP) {
         flag_chamber_off = false;
 
         #if ENABLED(CHAMBER_FAN)
+          int16_t fan_chamber_pwm;
           #if CHAMBER_FAN_MODE == 0
             fan_chamber_pwm = CHAMBER_FAN_BASE;
           #elif CHAMBER_FAN_MODE == 1
             // Open vent after MIN_COOLING_SLOPE_TIME_CHAMBER_VENT seconds if the
             // temperature didn't drop at least MIN_COOLING_SLOPE_DEG_CHAMBER_VENT
             if (next_cool_check_ms_2 == 0 || ELAPSED(ms, next_cool_check_ms_2)) {
-              if (old_temp - temp_chamber.celsius < float(MIN_COOLING_SLOPE_DEG_CHAMBER_VENT)) flag_chamber_excess_heat = true; //the bed is heating the chamber too much
+              if (temp_chamber.celsius - old_temp > MIN_COOLING_SLOPE_DEG_CHAMBER_VENT)
+                flag_chamber_excess_heat = true; // the bed is heating the chamber too much
               next_cool_check_ms_2 = ms + SEC_TO_MS(MIN_COOLING_SLOPE_TIME_CHAMBER_VENT);
               old_temp = temp_chamber.celsius;
             }
             next_cool_check_ms_2 = 0;
             old_temp = 9999;
           }
-          if (flag_chamber_excess_heat && (temp_chamber.celsius - temp_chamber.target <= -LOW_EXCESS_HEAT_LIMIT) ) {
+          if (flag_chamber_excess_heat && (temp_chamber.target - temp_chamber.celsius >= LOW_EXCESS_HEAT_LIMIT))
             flag_chamber_excess_heat = false;
-          }
         #endif
       }
       else if (!flag_chamber_off) {
       }
     #endif
 
-
-
-
     #if ENABLED(PIDTEMPCHAMBER)
       // PIDTEMPCHAMBER doens't support a CHAMBER_VENT yet.
       temp_chamber.soft_pwm_amount = WITHIN(temp_chamber.celsius, CHAMBER_MINTEMP, CHAMBER_MAXTEMP) ? (int)get_pid_output_chamber() >> 1 : 0;
     #else
-    if (ELAPSED(ms, next_chamber_check_ms)) {
-      next_chamber_check_ms = ms + CHAMBER_CHECK_INTERVAL;
+      if (ELAPSED(ms, next_chamber_check_ms)) {
+        next_chamber_check_ms = ms + CHAMBER_CHECK_INTERVAL;
 
-      if (WITHIN(temp_chamber.celsius, CHAMBER_MINTEMP, CHAMBER_MAXTEMP)) {
+        if (WITHIN(temp_chamber.celsius, CHAMBER_MINTEMP, CHAMBER_MAXTEMP)) {
           if (flag_chamber_excess_heat) {
             temp_chamber.soft_pwm_amount = 0;
             #if ENABLED(CHAMBER_VENT)
           temp_chamber.soft_pwm_amount = 0;
           WRITE_HEATER_CHAMBER(LOW);
         }
-
      }
      #if ENABLED(THERMAL_PROTECTION_CHAMBER)
        tr_state_machine[RUNAWAY_IND_CHAMBER].run(temp_chamber.celsius, temp_chamber.target, H_CHAMBER, THERMAL_PROTECTION_CHAMBER_PERIOD, THERMAL_PROTECTION_CHAMBER_HYSTERESIS);
 
   #endif // HAS_HEATED_CHAMBER
 
+  #if HAS_COOLER
+
+    #ifndef COOLER_CHECK_INTERVAL
+      #define COOLER_CHECK_INTERVAL 2000UL
+    #endif
+
+    #if ENABLED(THERMAL_PROTECTION_COOLER)
+      if (degCooler() > COOLER_MAXTEMP) max_temp_error(H_COOLER);
+    #endif
+
+    #if WATCH_COOLER
+      // Make sure temperature is decreasing
+      if (watch_cooler.elapsed(ms)) {             // Time to check the cooler?
+        if (degCooler() > watch_cooler.target)    // Failed to decrease enough?
+          _temp_error(H_COOLER, GET_TEXT(MSG_COOLING_FAILED), GET_TEXT(MSG_COOLING_FAILED));
+        else
+          start_watching_cooler();                 // Start again if the target is still far off
+      }
+    #endif
+
+    static bool flag_cooler_state; // = false
+
+    if (cooler.is_enabled()) {
+      flag_cooler_state = true; // used to allow M106 fan control when cooler is disabled
+      if (temp_cooler.target == 0) temp_cooler.target = COOLER_MINTEMP;
+      if (ELAPSED(ms, next_cooler_check_ms)) {
+        next_cooler_check_ms = ms + COOLER_CHECK_INTERVAL;
+        if (temp_cooler.celsius > temp_cooler.target) {
+          temp_cooler.soft_pwm_amount = temp_cooler.celsius > temp_cooler.target ? MAX_COOLER_POWER : 0;
+          flag_cooler_state = temp_cooler.soft_pwm_amount > 0 ? true : false; // used to allow M106 fan control when cooler is disabled
+          #if ENABLED(COOLER_FAN)
+            int16_t fan_cooler_pwm = (COOLER_FAN_BASE) + (COOLER_FAN_FACTOR) * ABS(temp_cooler.celsius - temp_cooler.target);
+            NOMORE(fan_cooler_pwm, 255);
+            set_fan_speed(COOLER_FAN_INDEX, fan_cooler_pwm); // Set cooler fan pwm
+            cooler_fan_flush_ms = ms + 5000;
+          #endif
+        }
+        else {
+          temp_cooler.soft_pwm_amount = 0;
+          #if ENABLED(COOLER_FAN)
+            set_fan_speed(COOLER_FAN_INDEX, temp_cooler.celsius > temp_cooler.target - 2 ? COOLER_FAN_BASE : 0);
+          #endif
+          WRITE_HEATER_COOLER(LOW);
+        }
+      }
+    }
+    else {
+      temp_cooler.soft_pwm_amount = 0;
+      if (flag_cooler_state) {
+        flag_cooler_state = false;
+        thermalManager.set_fan_speed(COOLER_FAN_INDEX, 0);
+      }
+      WRITE_HEATER_COOLER(LOW);
+    }
+
+    #if ENABLED(THERMAL_PROTECTION_COOLER)
+      tr_state_machine[RUNAWAY_IND_COOLER].run(temp_cooler.celsius, temp_cooler.target, H_COOLER, THERMAL_PROTECTION_COOLER_PERIOD, THERMAL_PROTECTION_COOLER_HYSTERESIS);
+    #endif
+  #endif // HAS_COOLER
+
   UNUSED(ms);
 }
 
       #if TEMP_SENSOR_CHAMBER_IS_CUSTOM
         { true, 0, 0, CHAMBER_PULLUP_RESISTOR_OHMS, CHAMBER_RESISTANCE_25C_OHMS, 0, 0, CHAMBER_BETA, 0 }
       #endif
+      #if TEMP_SENSOR_COOLER_IS_CUSTOM
+        { true, 0, 0, COOLER_PULLUP_RESISTOR_OHMS, COOLER_RESISTANCE_25C_OHMS, 0, 0, COOLER_BETA, 0 }
+      #endif
       #if TEMP_SENSOR_PROBE_IS_CUSTOM
         { true, 0, 0, PROBE_PULLUP_RESISTOR_OHMS, PROBE_RESISTANCE_25C_OHMS, 0, 0, PROBE_BETA, 0 }
       #endif
       TERN_(TEMP_SENSOR_7_IS_CUSTOM, t_index == CTI_HOTEND_7 ? PSTR("HOTEND 7") :)
       TERN_(TEMP_SENSOR_BED_IS_CUSTOM, t_index == CTI_BED ? PSTR("BED") :)
       TERN_(TEMP_SENSOR_CHAMBER_IS_CUSTOM, t_index == CTI_CHAMBER ? PSTR("CHAMBER") :)
+      TERN_(TEMP_SENSOR_COOLER_IS_CUSTOM, t_index == CTI_COOLER ? PSTR("COOLER") :)
       TERN_(TEMP_SENSOR_PROBE_IS_CUSTOM, t_index == CTI_PROBE ? PSTR("PROBE") :)
       nullptr
     );
 #endif // HAS_HOTEND
 
 #if HAS_HEATED_BED
-  // Derived from RepRap FiveD extruder::getTemperature()
   // For bed temperature measurement.
   float Temperature::analog_to_celsius_bed(const int raw) {
     #if TEMP_SENSOR_BED_IS_CUSTOM
 #endif // HAS_HEATED_BED
 
 #if HAS_TEMP_CHAMBER
-  // Derived from RepRap FiveD extruder::getTemperature()
   // For chamber temperature measurement.
   float Temperature::analog_to_celsius_chamber(const int raw) {
     #if TEMP_SENSOR_CHAMBER_IS_CUSTOM
   }
 #endif // HAS_TEMP_CHAMBER
 
+#if HAS_TEMP_COOLER
+  // For cooler temperature measurement.
+  float Temperature::analog_to_celsius_cooler(const int raw) {
+    #if TEMP_SENSOR_COOLER_IS_CUSTOM
+      return user_thermistor_to_deg_c(CTI_COOLER, raw);
+    #elif TEMP_SENSOR_COOLER_IS_THERMISTOR
+      SCAN_THERMISTOR_TABLE(TEMPTABLE_COOLER, TEMPTABLE_COOLER_LEN);
+    #elif TEMP_SENSOR_COOLER_IS_AD595
+      return TEMP_AD595(raw);
+    #elif TEMP_SENSOR_COOLER_IS_AD8495
+      return TEMP_AD8495(raw);
+    #else
+      UNUSED(raw);
+      return 0;
+    #endif
+  }
+#endif // HAS_TEMP_COOLER
+
 #if HAS_TEMP_PROBE
-  // Derived from RepRap FiveD extruder::getTemperature()
   // For probe temperature measurement.
   float Temperature::analog_to_celsius_probe(const int raw) {
     #if TEMP_SENSOR_PROBE_IS_CUSTOM
   #endif
   TERN_(HAS_HEATED_BED, temp_bed.celsius = analog_to_celsius_bed(temp_bed.raw));
   TERN_(HAS_TEMP_CHAMBER, temp_chamber.celsius = analog_to_celsius_chamber(temp_chamber.raw));
+  TERN_(HAS_TEMP_COOLER, temp_cooler.celsius = analog_to_celsius_cooler(temp_cooler.raw));
   TERN_(HAS_TEMP_PROBE, temp_probe.celsius = analog_to_celsius_probe(temp_probe.raw));
   TERN_(TEMP_SENSOR_1_AS_REDUNDANT, redundant_temperature = analog_to_celsius_hotend(redundant_temperature_raw, 1));
   TERN_(FILAMENT_WIDTH_SENSOR, filwidth.update_measured_mm());
     OUT_WRITE(HEATER_CHAMBER_PIN, HEATER_CHAMBER_INVERTING);
   #endif
 
+  #if HAS_COOLER
+    OUT_WRITE(COOLER_PIN, COOLER_INVERTING);
+  #endif
+
   #if HAS_FAN0
     INIT_FAN_PIN(FAN_PIN);
   #endif
   #if HAS_TEMP_ADC_CHAMBER
     HAL_ANALOG_SELECT(TEMP_CHAMBER_PIN);
   #endif
+  #if HAS_TEMP_ADC_COOLER
+    HAL_ANALOG_SELECT(TEMP_COOLER_PIN);
+  #endif
   #if HAS_TEMP_ADC_PROBE
     HAL_ANALOG_SELECT(TEMP_PROBE_PIN);
   #endif
     #endif
   #endif
 
+  #if HAS_COOLER
+    #ifdef COOLER_MINTEMP
+      while (analog_to_celsius_cooler(mintemp_raw_COOLER) > COOLER_MINTEMP) mintemp_raw_COOLER += TEMPDIR(COOLER) * (OVERSAMPLENR);
+    #endif
+    #ifdef COOLER_MAXTEMP
+      while (analog_to_celsius_cooler(maxtemp_raw_COOLER) < COOLER_MAXTEMP) maxtemp_raw_COOLER -= TEMPDIR(COOLER) * (OVERSAMPLENR);
+    #endif
+  #endif
+
   TERN_(PROBING_HEATERS_OFF, paused = false);
 }
 
   }
 #endif
 
+#if WATCH_COOLER
+  /**
+   * Start Cooling Sanity Check for cooler that is above
+   * its target temperature by a configurable margin.
+   * This is called when the temperature is set. (M143, M193)
+   */
+  void Temperature::start_watching_cooler() {
+    watch_cooler.restart(degCooler(), degTargetCooler());
+  }
+#endif
+
 #if HAS_THERMAL_PROTECTION
 
   Temperature::tr_state_machine_t Temperature::tr_state_machine[NR_HEATER_RUNAWAY]; // = { { TRInactive, 0 } };
     temp_chamber.soft_pwm_amount = 0;
     WRITE_HEATER_CHAMBER(LOW);
   #endif
+
+  #if HAS_COOLER
+    setTargetCooler(0);
+    temp_cooler.soft_pwm_amount = 0;
+    WRITE_HEATER_COOLER(LOW);
+  #endif
 }
 
 #if ENABLED(PRINTJOB_TIMER_AUTOSTART)
 
+  #include "printcounter.h"
+
   bool Temperature::auto_job_over_threshold() {
     #if HAS_HOTEND
       HOTEND_LOOP() if (degTargetHotend(e) > (EXTRUDE_MINTEMP) / 2) return true;
   TERN_(HAS_TEMP_ADC_BED, temp_bed.update());
   TERN_(HAS_TEMP_ADC_CHAMBER, temp_chamber.update());
   TERN_(HAS_TEMP_ADC_PROBE, temp_probe.update());
+  TERN_(HAS_TEMP_ADC_COOLER, temp_cooler.update());
 
   TERN_(HAS_JOY_ADC_X, joystick.x.update());
   TERN_(HAS_JOY_ADC_Y, joystick.y.update());
   TERN_(HAS_HEATED_BED, temp_bed.reset());
   TERN_(HAS_TEMP_CHAMBER, temp_chamber.reset());
   TERN_(HAS_TEMP_PROBE, temp_probe.reset());
+  TERN_(HAS_TEMP_COOLER, temp_cooler.reset());
 
   TERN_(HAS_JOY_ADC_X, joystick.x.reset());
   TERN_(HAS_JOY_ADC_Y, joystick.y.reset());
     if (CHAMBERCMP(temp_chamber.raw, maxtemp_raw_CHAMBER)) max_temp_error(H_CHAMBER);
     if (chamber_on && CHAMBERCMP(mintemp_raw_CHAMBER, temp_chamber.raw)) min_temp_error(H_CHAMBER);
   #endif
+
+  #if BOTH(HAS_COOLER, THERMAL_PROTECTION_COOLER)
+    #if TEMPDIR(COOLER) < 0
+      #define COOLERCMP(A,B) ((A)<(B))
+    #else
+      #define COOLERCMP(A,B) ((A)>(B))
+    #endif
+    if (cutter.unitPower > 0) {
+      if (COOLERCMP(temp_cooler.raw, maxtemp_raw_COOLER)) max_temp_error(H_COOLER);
+    }
+    if (COOLERCMP(mintemp_raw_COOLER, temp_cooler.raw)) min_temp_error(H_COOLER);
+  #endif
 }
 
 /**
     static SoftPWM soft_pwm_chamber;
   #endif
 
+  #if HAS_COOLER
+    static SoftPWM soft_pwm_cooler;
+  #endif
+
   #define WRITE_FAN(n, v) WRITE(FAN##n##_PIN, (v) ^ FAN_INVERTING)
 
   #if DISABLED(SLOW_PWM_HEATERS)
 
-    #if ANY(HAS_HOTEND, HAS_HEATED_BED, HAS_HEATED_CHAMBER, FAN_SOFT_PWM)
+    #if ANY(HAS_HOTEND, HAS_HEATED_BED, HAS_HEATED_CHAMBER, HAS_COOLER, FAN_SOFT_PWM)
       constexpr uint8_t pwm_mask = TERN0(SOFT_PWM_DITHER, _BV(SOFT_PWM_SCALE) - 1);
       #define _PWM_MOD(N,S,T) do{                           \
         const bool on = S.add(pwm_mask, T.soft_pwm_amount); \
         _PWM_MOD(CHAMBER,soft_pwm_chamber,temp_chamber);
       #endif
 
+      #if HAS_COOLER
+        _PWM_MOD(COOLER,soft_pwm_cooler,temp_cooler);
+      #endif
+
       #if ENABLED(FAN_SOFT_PWM)
         #define _FAN_PWM(N) do{                                     \
           uint8_t &spcf = soft_pwm_count_fan[N];                    \
         _PWM_LOW(CHAMBER, soft_pwm_chamber);
       #endif
 
+      #if HAS_COOLER
+        _PWM_LOW(COOLER, soft_pwm_cooler);
+      #endif
+
       #if ENABLED(FAN_SOFT_PWM)
         #if HAS_FAN0
           if (soft_pwm_count_fan[0] <= pwm_count_tmp) WRITE_FAN(0, LOW);
         _SLOW_PWM(CHAMBER, soft_pwm_chamber, temp_chamber);
       #endif
 
+      #if HAS_COOLER
+        _SLOW_PWM(COOLER, soft_pwm_cooler, temp_cooler);
+      #endif
+
     } // slow_pwm_count == 0
 
     #if HAS_HOTEND
       _PWM_OFF(CHAMBER, soft_pwm_chamber);
     #endif
 
+    #if HAS_COOLER
+      _PWM_OFF(COOLER, soft_pwm_cooler, temp_cooler);
+    #endif
+
     #if ENABLED(FAN_SOFT_PWM)
       if (pwm_count_tmp >= 127) {
         pwm_count_tmp = 0;
       #endif
       TERN_(HAS_HEATED_BED, soft_pwm_bed.dec());
       TERN_(HAS_HEATED_CHAMBER, soft_pwm_chamber.dec());
+      TERN_(HAS_COOLER, soft_pwm_cooler.dec());
     }
 
   #endif // SLOW_PWM_HEATERS
       case MeasureTemp_CHAMBER: ACCUMULATE_ADC(temp_chamber); break;
     #endif
 
+    #if HAS_TEMP_ADC_COOLER
+      case PrepareTemp_COOLER: HAL_START_ADC(TEMP_COOLER_PIN); break;
+      case MeasureTemp_COOLER: ACCUMULATE_ADC(temp_cooler); break;
+    #endif
+
     #if HAS_TEMP_ADC_PROBE
       case PrepareTemp_PROBE: HAL_START_ADC(TEMP_PROBE_PIN); break;
       case MeasureTemp_PROBE: ACCUMULATE_ADC(temp_probe); break;
   ) {
     char k;
     switch (e) {
+      default:
+        #if HAS_TEMP_HOTEND
+          k = 'T'; break;
+        #endif
+      #if HAS_TEMP_BED
+        case H_BED: k = 'B'; break;
+      #endif
       #if HAS_TEMP_CHAMBER
         case H_CHAMBER: k = 'C'; break;
       #endif
       #if HAS_TEMP_PROBE
         case H_PROBE: k = 'P'; break;
       #endif
-      #if HAS_TEMP_HOTEND
-        default: k = 'T'; break;
-        #if HAS_HEATED_BED
-          case H_BED: k = 'B'; break;
-        #endif
-        #if ENABLED(TEMP_SENSOR_1_AS_REDUNDANT)
-          case H_REDUNDANT: k = 'R'; break;
-        #endif
-      #elif HAS_HEATED_BED
-        default: k = 'B'; break;
+      #if HAS_TEMP_COOLER
+        case H_COOLER: k = 'L'; break;
+      #endif
+      #if ENABLED(TEMP_SENSOR_1_AS_REDUNDANT)
+        case H_REDUNDANT: k = 'R'; break;
       #endif
     }
     SERIAL_CHAR(' ', k);
       );
     #endif
     #if HAS_TEMP_CHAMBER
-      print_heater_state(degChamber()
-        #if HAS_HEATED_CHAMBER
-          , degTargetChamber()
-        #else
-          , 0
-        #endif
+      print_heater_state(degChamber(), TERN0(HAS_HEATED_CHAMBER, degTargetChamber())
         #if ENABLED(SHOW_TEMP_ADC_VALUES)
           , rawChamberTemp()
         #endif
         , H_CHAMBER
       );
-    #endif
+    #endif // HAS_TEMP_CHAMBER
+    #if HAS_TEMP_COOLER
+      print_heater_state(degCooler(), TERN0(HAS_COOLER, degTargetCooler())
+        #if ENABLED(SHOW_TEMP_ADC_VALUES)
+          , rawCoolerTemp()
+        #endif
+        , H_COOLER
+      );
+    #endif // HAS_TEMP_COOLER
     #if HAS_TEMP_PROBE
       print_heater_state(degProbe(), 0
         #if ENABLED(SHOW_TEMP_ADC_VALUES)
     #if HAS_HEATED_CHAMBER
       SERIAL_ECHOPAIR(" C@:", getHeaterPower(H_CHAMBER));
     #endif
+    #if HAS_COOLER
+      SERIAL_ECHOPAIR(" C@:", getHeaterPower(H_COOLER));
+    #endif
     #if HAS_MULTI_HOTEND
       HOTEND_LOOP() {
         SERIAL_ECHOPAIR(" @", e);
 
   #endif // HAS_HEATED_CHAMBER
 
+  #if HAS_COOLER
+
+    #ifndef MIN_COOLING_SLOPE_DEG_COOLER
+      #define MIN_COOLING_SLOPE_DEG_COOLER 1.50
+    #endif
+    #ifndef MIN_COOLING_SLOPE_TIME_COOLER
+      #define MIN_COOLING_SLOPE_TIME_COOLER 120
+    #endif
+
+    bool Temperature::wait_for_cooler(const bool no_wait_for_cooling/*=true*/) {
+
+      #if TEMP_COOLER_RESIDENCY_TIME > 0
+        millis_t residency_start_ms = 0;
+        bool first_loop = true;
+        // Loop until the temperature has stabilized
+        #define TEMP_COOLER_CONDITIONS (!residency_start_ms || PENDING(now, residency_start_ms + SEC_TO_MS(TEMP_COOLER_RESIDENCY_TIME)))
+      #else
+        // Loop until the temperature is very close target
+        #define TEMP_COOLER_CONDITIONS (wants_to_cool ? isLaserHeating() : isLaserCooling())
+      #endif
+
+      #if DISABLED(BUSY_WHILE_HEATING) && ENABLED(HOST_KEEPALIVE_FEATURE)
+        KEEPALIVE_STATE(NOT_BUSY);
+      #endif
+
+      bool wants_to_cool = false;
+      float target_temp = -1, previous_temp = 9999;
+      millis_t now, next_temp_ms = 0, next_cooling_check_ms = 0;
+      wait_for_heatup = true;
+      do {
+        // Target temperature might be changed during the loop
+        if (target_temp != degTargetCooler()) {
+          wants_to_cool = isLaserHeating();
+          target_temp = degTargetCooler();
+
+          // Exit if S<lower>, continue if S<higher>, R<lower>, or R<higher>
+          if (no_wait_for_cooling && wants_to_cool) break;
+        }
+
+        now = millis();
+        if (ELAPSED(now, next_temp_ms)) { // Print Temp Reading every 1 second while heating up.
+          next_temp_ms = now + 1000UL;
+          print_heater_states(active_extruder);
+          #if TEMP_COOLER_RESIDENCY_TIME > 0
+            SERIAL_ECHOPGM(" W:");
+            if (residency_start_ms)
+              SERIAL_ECHO(long((SEC_TO_MS(TEMP_COOLER_RESIDENCY_TIME) - (now - residency_start_ms)) / 1000UL));
+            else
+              SERIAL_CHAR('?');
+          #endif
+          SERIAL_EOL();
+        }
+
+        idle();
+        gcode.reset_stepper_timeout(); // Keep steppers powered
+
+        const float current_temp = degCooler();
+
+        #if TEMP_COOLER_RESIDENCY_TIME > 0
+
+          const float temp_diff = ABS(target_temp - temp);
+
+          if (!residency_start_ms) {
+            // Start the TEMP_COOLER_RESIDENCY_TIME timer when we reach target temp for the first time.
+            if (temp_diff < TEMP_COOLER_WINDOW)
+              residency_start_ms = now + (first_loop ? SEC_TO_MS(TEMP_COOLER_RESIDENCY_TIME) / 3 : 0);
+          }
+          else if (temp_diff > TEMP_COOLER_HYSTERESIS) {
+            // Restart the timer whenever the temperature falls outside the hysteresis.
+            residency_start_ms = now;
+          }
+
+          first_loop = false;
+        #endif // TEMP_COOLER_RESIDENCY_TIME > 0
+
+        if (wants_to_cool) {
+          // Break after MIN_COOLING_SLOPE_TIME_CHAMBER seconds
+          // if the temperature did not drop at least MIN_COOLING_SLOPE_DEG_CHAMBER
+          if (!next_cooling_check_ms || ELAPSED(now, next_cooling_check_ms)) {
+            if (previous_temp - current_temp < float(MIN_COOLING_SLOPE_DEG_COOLER)) break;
+            next_cooling_check_ms = now + SEC_TO_MS(MIN_COOLING_SLOPE_TIME_COOLER);
+            previous_temp = current_temp;
+          }
+        }
+
+      } while (wait_for_heatup && TEMP_COOLER_CONDITIONS);
+
+      // Prevent a wait-forever situation if R is misused i.e. M191 R0
+      if (wait_for_heatup) {
+        wait_for_heatup = false;
+        ui.reset_status();
+        return true;
+      }
+
+      return false;
+    }
+
+  #endif // HAS_COOLER
+
 #endif // HAS_TEMP_SENSOR

Marlin/src/module/temperature.h

 #define HOTEND_INDEX TERN(HAS_MULTI_HOTEND, e, 0)
 #define E_NAME TERN_(HAS_MULTI_HOTEND, e)
 
-// Heater identifiers. Positive values are hotends. Negative values are other heaters.
+// Element identifiers. Positive values are hotends. Negative values are other heaters or coolers.
 typedef enum : int8_t {
-  INDEX_NONE = -5,
-  H_PROBE, H_REDUNDANT, H_CHAMBER, H_BED,
+  INDEX_NONE = -6,
+  H_COOLER, H_PROBE, H_REDUNDANT, H_CHAMBER, H_BED,
   H_E0, H_E1, H_E2, H_E3, H_E4, H_E5, H_E6, H_E7
 } heater_id_t;
 
   #if HAS_TEMP_ADC_CHAMBER
     PrepareTemp_CHAMBER, MeasureTemp_CHAMBER,
   #endif
+  #if HAS_TEMP_ADC_COOLER
+    PrepareTemp_COOLER, MeasureTemp_COOLER,
+  #endif
   #if HAS_TEMP_ADC_PROBE
     PrepareTemp_PROBE, MeasureTemp_PROBE,
   #endif
 #elif HAS_TEMP_CHAMBER
   typedef temp_info_t chamber_info_t;
 #endif
+#if EITHER(HAS_COOLER, HAS_TEMP_COOLER)
+  typedef heater_info_t cooler_info_t;
+#endif
 
 // Heater watch handling
 template <int INCREASE, int HYSTERESIS, millis_t PERIOD>
 #if WATCH_CHAMBER
   typedef struct HeaterWatch<WATCH_CHAMBER_TEMP_INCREASE, TEMP_CHAMBER_HYSTERESIS, WATCH_CHAMBER_TEMP_PERIOD> chamber_watch_t;
 #endif
+#if WATCH_COOLER
+  typedef struct HeaterWatch<WATCH_COOLER_TEMP_INCREASE, TEMP_COOLER_HYSTERESIS, WATCH_COOLER_TEMP_PERIOD> cooler_watch_t;
+#endif
 
 // Temperature sensor read value ranges
 typedef struct { int16_t raw_min, raw_max; } raw_range_t;
     #if TEMP_SENSOR_CHAMBER_IS_CUSTOM
       CTI_CHAMBER,
     #endif
+    #if COOLER_USER_THERMISTOR
+      CTI_COOLER,
+    #endif
     USER_THERMISTORS
   };
 
     TERN_(HAS_HEATED_BED, static bed_info_t temp_bed);
     TERN_(HAS_TEMP_PROBE, static probe_info_t temp_probe);
     TERN_(HAS_TEMP_CHAMBER, static chamber_info_t temp_chamber);
+    TERN_(HAS_TEMP_COOLER, static cooler_info_t temp_cooler);
 
     TERN_(AUTO_POWER_E_FANS, static uint8_t autofan_speed[HOTENDS]);
     TERN_(AUTO_POWER_CHAMBER_FAN, static uint8_t chamberfan_speed);
+    TERN_(AUTO_POWER_COOLER_FAN, static uint8_t coolerfan_speed);
 
     #if ENABLED(FAN_SOFT_PWM)
       static uint8_t soft_pwm_amount_fan[FAN_COUNT],
       #endif
     #endif
 
+    #if HAS_COOLER
+      TERN_(WATCH_COOLER, static cooler_watch_t watch_cooler);
+      static millis_t next_cooler_check_ms, cooler_fan_flush_ms;
+      #ifdef COOLER_MINTEMP
+        static int16_t mintemp_raw_COOLER;
+      #endif
+      #ifdef COOLER_MAXTEMP
+        static int16_t maxtemp_raw_COOLER;
+      #endif
+    #endif
+
     #ifdef MAX_CONSECUTIVE_LOW_TEMPERATURE_ERROR_ALLOWED
       static uint8_t consecutive_low_temperature_error[HOTENDS];
     #endif
     #if HAS_HOTEND
       static float analog_to_celsius_hotend(const int raw, const uint8_t e);
     #endif
-
     #if HAS_HEATED_BED
       static float analog_to_celsius_bed(const int raw);
     #endif
     #if HAS_TEMP_CHAMBER
       static float analog_to_celsius_chamber(const int raw);
     #endif
+    #if HAS_TEMP_COOLER
+      static float analog_to_celsius_cooler(const int raw);
+    #endif
 
     #if HAS_FAN
 
       }
     #endif
 
+    #if HAS_TEMP_COOLER
+      #if ENABLED(SHOW_TEMP_ADC_VALUES)
+        FORCE_INLINE static int16_t rawCoolerTemp()    { return temp_cooler.raw; }
+      #endif
+      FORCE_INLINE static float degCooler()            { return temp_cooler.celsius; }
+      #if HAS_COOLER
+        FORCE_INLINE static int16_t degTargetCooler()  { return temp_cooler.target; }
+        FORCE_INLINE static bool isLaserHeating()     { return temp_cooler.target > temp_cooler.celsius; }
+        FORCE_INLINE static bool isLaserCooling()     { return temp_cooler.target < temp_cooler.celsius; }
+        static bool wait_for_cooler(const bool no_wait_for_cooling=true);
+      #endif
+    #endif
+
+    #if WATCH_COOLER
+      static void start_watching_cooler();
+    #else
+      static inline void start_watching_cooler() {}
+    #endif
+
+    #if HAS_COOLER
+      static void setTargetCooler(const int16_t celsius) {
+        temp_cooler.target =
+          #ifdef COOLER_MAXTEMP
+            _MIN(celsius, COOLER_MAXTEMP - 10)
+          #else
+            celsius
+          #endif
+        ;
+        start_watching_cooler();
+      }
+    #endif
+
     /**
      * The software PWM power for a heater
      */
     static void min_temp_error(const heater_id_t e);
     static void max_temp_error(const heater_id_t e);
 
-    #define HAS_THERMAL_PROTECTION ANY(THERMAL_PROTECTION_HOTENDS, THERMAL_PROTECTION_CHAMBER, HAS_THERMALLY_PROTECTED_BED)
+    #define HAS_THERMAL_PROTECTION ANY(THERMAL_PROTECTION_HOTENDS, THERMAL_PROTECTION_CHAMBER, HAS_THERMALLY_PROTECTED_BED, THERMAL_PROTECTION_COOLER)
 
     #if HAS_THERMAL_PROTECTION
 
         #if ENABLED(THERMAL_PROTECTION_CHAMBER)
           RUNAWAY_IND_CHAMBER,
         #endif
+        #if ENABLED(THERMAL_PROTECTION_COOLER)
+          RUNAWAY_IND_COOLER,
+        #endif
         NR_HEATER_RUNAWAY
       };
       #undef _ENUM_FOR_E
         #if HAS_THERMALLY_PROTECTED_CHAMBER
           if (heater_id == H_CHAMBER) return RUNAWAY_IND_CHAMBER;
         #endif
+        #if HAS_THERMALLY_PROTECTED_CHAMBER
+          if (heater_id == H_COOLER) return RUNAWAY_IND_COOLER;
+        #endif
         #if HAS_THERMALLY_PROTECTED_BED
           if (heater_id == H_BED) return RUNAWAY_IND_BED;
         #endif

Marlin/src/module/thermistor/thermistors.h

 #define OV_SCALE(N) (N)
 #define OV(N) int16_t(OV_SCALE(N) * (OVERSAMPLENR) * (THERMISTOR_TABLE_SCALE))
 
-#define ANY_THERMISTOR_IS(n) (TEMP_SENSOR_0_THERMISTOR_ID == n || TEMP_SENSOR_1_THERMISTOR_ID == n || TEMP_SENSOR_2_THERMISTOR_ID == n || TEMP_SENSOR_3_THERMISTOR_ID == n || TEMP_SENSOR_4_THERMISTOR_ID == n || TEMP_SENSOR_5_THERMISTOR_ID == n || TEMP_SENSOR_6_THERMISTOR_ID == n || TEMP_SENSOR_7_THERMISTOR_ID == n || TEMP_SENSOR_BED_THERMISTOR_ID == n || TEMP_SENSOR_CHAMBER_THERMISTOR_ID == n || TEMP_SENSOR_PROBE_THERMISTOR_ID == n)
+#define ANY_THERMISTOR_IS(n) (TEMP_SENSOR_0_THERMISTOR_ID == n || TEMP_SENSOR_1_THERMISTOR_ID == n || TEMP_SENSOR_2_THERMISTOR_ID == n || TEMP_SENSOR_3_THERMISTOR_ID == n || TEMP_SENSOR_4_THERMISTOR_ID == n || TEMP_SENSOR_5_THERMISTOR_ID == n || TEMP_SENSOR_6_THERMISTOR_ID == n || TEMP_SENSOR_7_THERMISTOR_ID == n || TEMP_SENSOR_BED_THERMISTOR_ID == n || TEMP_SENSOR_CHAMBER_THERMISTOR_ID == n || TEMP_SENSOR_COOLER_THERMISTOR_ID == n || TEMP_SENSOR_PROBE_THERMISTOR_ID == n)
 
 typedef struct { int16_t value, celsius; } temp_entry_t;
 
   #define TEMPTABLE_CHAMBER_LEN 0
 #endif
 
+#ifdef TEMP_SENSOR_COOLER_THERMISTOR_ID
+  #define TEMPTABLE_COOLER TT_NAME(TEMP_SENSOR_COOLER_THERMISTOR_ID)
+  #define TEMPTABLE_COOLER_LEN COUNT(TEMPTABLE_COOLER)
+#elif TEMP_SENSOR_COOLER_IS_THERMISTOR
+  #error "No cooler thermistor table specified"
+#else
+  #define TEMPTABLE_COOLER_LEN 0
+#endif
 #ifdef TEMP_SENSOR_PROBE_THERMISTOR_ID
   #define TEMPTABLE_PROBE TT_NAME(TEMP_SENSOR_PROBE_THERMISTOR_ID)
   #define TEMPTABLE_PROBE_LEN COUNT(TEMPTABLE_PROBE)
   && TEMPTABLE_4_LEN < 256 && TEMPTABLE_5_LEN < 256
   && TEMPTABLE_6_LEN < 256 && TEMPTABLE_7_LEN < 256
   && TEMPTABLE_BED_LEN < 256 && TEMPTABLE_CHAMBER_LEN < 256
-  && TEMPTABLE_PROBE_LEN < 256,
+  && TEMPTABLE_COOLER_LEN < 256 && TEMPTABLE_PROBE_LEN < 256,
   "Temperature conversion tables over 255 entries need special consideration."
 );
 
     #define TEMP_SENSOR_CHAMBER_RAW_LO_TEMP MAX_RAW_THERMISTOR_VALUE
   #endif
 #endif
+#ifndef TEMP_SENSOR_COOLER_RAW_HI_TEMP
+  #if TT_REVRAW(COOLER)
+    #define TEMP_SENSOR_COOLER_RAW_HI_TEMP MAX_RAW_THERMISTOR_VALUE
+    #define TEMP_SENSOR_COOLER_RAW_LO_TEMP 0
+  #else
+    #define TEMP_SENSOR_COOLER_RAW_HI_TEMP 0
+    #define TEMP_SENSOR_COOLER_RAW_LO_TEMP MAX_RAW_THERMISTOR_VALUE
+  #endif
+#endif
 #ifndef TEMP_SENSOR_PROBE_RAW_HI_TEMP
   #if TT_REVRAW(PROBE)
     #define TEMP_SENSOR_PROBE_RAW_HI_TEMP MAX_RAW_THERMISTOR_VALUE

Marlin/src/pins/pinsDebug_list.h

 #if PIN_EXISTS(TEMP_CHAMBER) && ANALOG_OK(TEMP_CHAMBER_PIN)
   REPORT_NAME_ANALOG(__LINE__, TEMP_CHAMBER_PIN)
 #endif
+#if PIN_EXISTS(TEMP_COOLER) && ANALOG_OK(TEMP_COOLER_PIN)
+  REPORT_NAME_ANALOG(__LINE__, TEMP_COOLER_PIN)
+#endif
 #if PIN_EXISTS(ADC_KEYPAD) && ANALOG_OK(ADC_KEYPAD_PIN)
   REPORT_NAME_ANALOG(__LINE__, ADC_KEYPAD_PIN)
 #endif
 #if PIN_EXISTS(HEATER_CHAMBER)
   REPORT_NAME_DIGITAL(__LINE__, HEATER_CHAMBER_PIN)
 #endif
+#if PIN_EXISTS(COOLER)
+  REPORT_NAME_DIGITAL(__LINE__, COOLER_PIN)
+#endif
 #if PIN_EXISTS(HOME)
   REPORT_NAME_DIGITAL(__LINE__, HOME_PIN)
 #endif

Marlin/src/pins/sensitive_pins.h

   #define _CHAMBER_FAN
 #endif
 
+#if TEMP_SENSOR_COOLER && PIN_EXISTS(TEMP_COOLER)
+  #define _COOLER_TEMP analogInputToDigitalPin(TEMP_COOLER_PIN),
+#else
+  #define _COOLER_TEMP
+#endif
+
+#if TEMP_SENSOR_COOLER && PIN_EXISTS(COOLER)
+  #define _COOLER COOLER_PIN,
+#else
+  #define _COOLER
+#endif
+
+#if TEMP_SENSOR_COOLER && PINS_EXIST(TEMP_COOLER, COOLER_AUTO_FAN)
+  #define _COOLER_FAN COOLER_AUTO_FAN_PIN,
+#else
+  #define _COOLER_FAN
+#endif
+
 #ifndef HAL_SENSITIVE_PINS
   #define HAL_SENSITIVE_PINS
 #endif
   _E0_PINS _E1_PINS _E2_PINS _E3_PINS _E4_PINS _E5_PINS _E6_PINS _E7_PINS \
   _H0_PINS _H1_PINS _H2_PINS _H3_PINS _H4_PINS _H5_PINS _H6_PINS _H7_PINS \
   _PS_ON _FAN0 _FAN1 _FAN2 _FAN3 _FAN4 _FAN5 _FAN6 _FAN7 _FANC \
-  _BED_PINS _CHAMBER_TEMP _CHAMBER_HEATER _CHAMBER_FAN HAL_SENSITIVE_PINS \
+  _BED_PINS _COOLER _CHAMBER_TEMP _CHAMBER_HEATER _CHAMBER_FAN HAL_SENSITIVE_PINS \
 }

buildroot/tests/BIGTREE_SKR_PRO

 #
 restore_configs
 opt_set MOTHERBOARD BOARD_BTT_SKR_PRO_V1_1 SERIAL_PORT 1
-exec_test $1 $2 "BigTreeTech SKR Pro Default Configuration" "$3"
+exec_test $1 $2 "BigTreeTech SKR Pro | Default Configuration" "$3"
 
 restore_configs
 opt_set MOTHERBOARD BOARD_BTT_SKR_PRO_V1_1 SERIAL_PORT -1 \
         E0_AUTO_FAN_PIN PC10 E1_AUTO_FAN_PIN PC11 E2_AUTO_FAN_PIN PC12 \
         X_DRIVER_TYPE TMC2209 Y_DRIVER_TYPE TMC2130
 opt_enable BLTOUCH EEPROM_SETTINGS AUTO_BED_LEVELING_3POINT Z_SAFE_HOMING PINS_DEBUGGING
-exec_test $1 $2 "BigTreeTech SKR Pro 3 Extruders, Auto-Fan, BLTOUCH, mixed TMC drivers" "$3"
+exec_test $1 $2 "BigTreeTech SKR Pro | 3 Extruders | Auto-Fan | BLTOUCH | Mixed TMC" "$3"
 
 restore_configs
 opt_set MOTHERBOARD BOARD_BTT_SKR_PRO_V1_1 SERIAL_PORT -1 \
         CUTTER_POWER_UNIT PERCENT \
-        SPINDLE_LASER_PWM_PIN HEATER_1_PIN SPINDLE_LASER_ENA_PIN HEATER_2_PIN
-opt_enable LASER_FEATURE REPRAP_DISCOUNT_SMART_CONTROLLER
-exec_test $1 $2 "Laser, LCD, PERCENT power unit" "$3"
+        SPINDLE_LASER_PWM_PIN HEATER_1_PIN SPINDLE_LASER_ENA_PIN HEATER_2_PIN \
+        TEMP_SENSOR_COOLER 1000 TEMP_COOLER_PIN PD13
+opt_enable LASER_FEATURE REPRAP_DISCOUNT_SMART_CONTROLLER 
+exec_test $1 $2 "BigTreeTech SKR Pro | Laser (Percent) | Cooling | LCD" "$3"
 
 # clean up
 restore_configs

platformio.ini

   -<src/gcode/sd/M32.cpp>
   -<src/gcode/sd/M808.cpp>
   -<src/gcode/temp/M104_M109.cpp>
+  -<src/gcode/temp/M143_M193.cpp>
   -<src/gcode/temp/M155.cpp>
   -<src/gcode/units/G20_G21.cpp>
   -<src/gcode/units/M149.cpp>
 HAS_MEDIA_SUBCALLS      = src_filter=+<src/gcode/sd/M32.cpp>
 GCODE_REPEAT_MARKERS    = src_filter=+<src/feature/repeat.cpp> +<src/gcode/sd/M808.cpp>
 HAS_EXTRUDERS           = src_filter=+<src/gcode/temp/M104_M109.cpp> +<src/gcode/config/M221.cpp>
+HAS_COOLER              = src_filter=-<src/gcode/temp/M143_M193.cpp>
 AUTO_REPORT_TEMPERATURES = src_filter=+<src/gcode/temp/M155.cpp>
 INCH_MODE_SUPPORT       = src_filter=+<src/gcode/units/G20_G21.cpp>
 TEMPERATURE_UNITS_SUPPORT = src_filter=+<src/gcode/units/M149.cpp>