Merge pull request #8047 from thinkyhead/bf2_babystepping_M290

[2.0.x] Add M290 Babystepping (extended)

Marlin/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/default/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/AlephObjects/TAZ4/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/AliExpress/CL-260/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/Anet/A6/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/Anet/A8/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/BQ/Hephestos/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/BQ/Hephestos_2/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/BQ/WITBOX/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/Cartesio/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/Creality/CR-10/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/Felix/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/Felix/DUAL/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/FolgerTech/i3-2020/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/Geeetech/GT2560/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/Geeetech/I3_Pro_X-GT2560/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/Infitary/i3-M508/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/Malyan/M150/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/Micromake/C1/basic/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/Micromake/C1/enhanced/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/Mks/Sbase/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/RepRapWorld/Megatronics/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/RigidBot/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/SCARA/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/Sanguinololu/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/TinyBoy2/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/Velleman/K8200/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/Velleman/K8400/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/Velleman/K8400/Dual-head/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/adafruit/ST7565/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/delta/FLSUN/auto_calibrate/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/delta/FLSUN/kossel_mini/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/delta/generic/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/delta/kossel_mini/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/delta/kossel_pro/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/delta/kossel_xl/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/gCreate/gMax1.5+/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/makibox/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/stm32f103ret6/Configuration.h

 #endif
 
 /**
+ * Two separate X-carriages with extruders that connect to a moving part
+ * via a magnetic docking mechanism. Requires SOL1_PIN and SOL2_PIN.
+ */
+//#define PARKING_EXTRUDER
+#if ENABLED(PARKING_EXTRUDER)
+  #define PARKING_EXTRUDER_SOLENOIDS_INVERT           // If enabled, the solenoid is NOT magnetized with applied voltage
+  #define PARKING_EXTRUDER_SOLENOIDS_PINS_ACTIVE LOW  // LOW or HIGH pin signal energizes the coil
+  #define PARKING_EXTRUDER_SOLENOIDS_DELAY 250        // Delay (ms) for magnetic field. No delay if 0 or not defined.
+  #define PARKING_EXTRUDER_PARKING_X { -78, 184 }     // X positions for parking the extruders
+  #define PARKING_EXTRUDER_GRAB_DISTANCE 1            // mm to move beyond the parking point to grab the extruder
+  #define PARKING_EXTRUDER_SECURITY_RAISE 5           // Z-raise before parking
+  #define HOTEND_OFFSET_Z { 0.0, 1.3 }                // Z-offsets of the two hotends. The first must be 0.
+#endif
+
+/**
  * "Mixing Extruder"
  *   - Adds a new code, M165, to set the current mix factors.
  *   - Extends the stepping routines to move multiple steppers in proportion to the mix.
  */
 //#define MIXING_EXTRUDER
 #if ENABLED(MIXING_EXTRUDER)
-  #define MIXING_STEPPERS 3        // Number of steppers in your mixing extruder
+  #define MIXING_STEPPERS 2        // Number of steppers in your mixing extruder
   #define MIXING_VIRTUAL_TOOLS 16  // Use the Virtual Tool method with M163 and M164
   //#define DIRECT_MIXING_IN_G1    // Allow ABCDHI mix factors in G1 movement commands
 #endif
 
 /**
  * Default Jerk (mm/s)
- * Override with M205 X Y Z EM
+ * Override with M205 X Y Z E
  *
  * "Jerk" specifies the minimum speed change that requires acceleration.
  * When changing speed and direction, if the difference is less than the
  * Probe Type
  *
  * Allen Key Probes, Servo Probes, Z-Sled Probes, FIX_MOUNTED_PROBE, etc.
- * You must activate one of these to use Auto Bed Leveling below.
+ * Activate one of these to use Auto Bed Leveling below.
  */
 
 /**
 #endif
 
 /**
- * Enable if probing seems unreliable. Heaters and/or fans - consistent with the
- * options selected below - will be disabled during probing so as to minimize
- * potential EM interference by quieting/silencing the source of the 'noise' (the change
- * in current flowing through the wires).  This is likely most useful to users of the
- * BLTouch probe, but may also help those with inductive or other probe types.
+ * Enable one or more of the following if probing seems unreliable.
+ * Heaters and/or fans can be disabled during probing to minimize electrical
+ * noise. A delay can also be added to allow noise and vibration to settle.
+ * These options are most useful for the BLTouch probe, but may also improve
+ * readings with inductive probes and piezo sensors.
  */
 //#define PROBING_HEATERS_OFF       // Turn heaters off when probing
 //#define PROBING_FANS_OFF          // Turn fans off when probing
+//#define DELAY_BEFORE_PROBING 200  // (ms) To prevent vibrations from triggering piezo sensors
 
 // A probe that is deployed and stowed with a solenoid pin (SOL1_PIN)
 //#define SOLENOID_PROBE
   #define UBL_PROBE_PT_3_X 180
   #define UBL_PROBE_PT_3_Y 20
 
-  #define UBL_G26_MESH_VALIDATION   // Enable G26 mesh validation
+  //#define UBL_G26_MESH_VALIDATION // Enable G26 mesh validation
   #define UBL_MESH_EDIT_MOVES_Z     // Sophisticated users prefer no movement of nozzle
   #define UBL_SAVE_ACTIVE_ON_M500   // Save the currently active mesh in the current slot on M500
 
   #define LCD_PROBE_Z_RANGE 4 // Z Range centered on Z_MIN_POS for LCD Z adjustment
 #endif
 
+// Add a menu item to move between bed corners for manual bed adjustment
+//#define LEVEL_BED_CORNERS
+
 /**
  * Commands to execute at the end of G29 probing.
  * Useful to retract or move the Z probe out of the way.
 //
 // M100 Free Memory Watcher
 //
-#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support
  *  - Click the controller to view the LCD menu
  *  - The LCD will display Japanese, Western, or Cyrillic text
  *
- * See https://github.com/MarlinFirmware/Marlin/wiki/LCD-Language
+ * See http://marlinfw.org/docs/development/lcd_language.html
  *
  * :['JAPANESE', 'WESTERN', 'CYRILLIC']
  */
 //#define ULTIPANEL
 
 //
-// Cartesio UI
-// http://mauk.cc/webshop/cartesio-shop/electronics/user-interface
-//
-//#define CARTESIO_UI
-
-//
 // PanelOne from T3P3 (via RAMPS 1.4 AUX2/AUX3)
 // http://reprap.org/wiki/PanelOne
 //
 //#define BQ_LCD_SMART_CONTROLLER
 
 //
+// Cartesio UI
+// http://mauk.cc/webshop/cartesio-shop/electronics/user-interface
+//
+//#define CARTESIO_UI
+
+//
 // ANET_10 Controller supported displays.
 //
 //#define ANET_KEYPAD_LCD         // Requires ADC_KEYPAD_PIN to be assigned to an analog pin.
 //#define OLED_PANEL_TINYBOY2
 
 //
+// Makeboard 3D Printer Parts 3D Printer Mini Display 1602 Mini Controller
+// https://www.aliexpress.com/item/Micromake-Makeboard-3D-Printer-Parts-3D-Printer-Mini-Display-1602-Mini-Controller-Compatible-with-Ramps-1/32765887917.html
+//
+//#define MAKEBOARD_MINI_2_LINE_DISPLAY_1602
+
+//
+// MKS MINI12864 with graphic controller and SD support
+// http://reprap.org/wiki/MKS_MINI_12864
+//
+//#define MKS_MINI_12864
+
+//
+// Factory display for Creality CR-10
+// https://www.aliexpress.com/item/Universal-LCD-12864-3D-Printer-Display-Screen-With-Encoder-For-CR-10-CR-7-Model/32833148327.html
+//
+// This is RAMPS-compatible using a single 10-pin connector.
+// (For CR-10 owners who want to replace the Melzi Creality board but retain the display)
+//
+//#define CR10_STOCKDISPLAY
+
+//
+// MKS OLED 1.3" 128 × 64 FULL GRAPHICS CONTROLLER
+// http://reprap.org/wiki/MKS_12864OLED
+//
+// Tiny, but very sharp OLED display
+//
+//#define MKS_12864OLED
+
+//
 // AZSMZ 12864 LCD with SD
 // https://www.aliexpress.com/store/product/3D-printer-smart-controller-SMART-RAMPS-OR-RAMPS-1-4-LCD-12864-LCD-control-panel-green/2179173_32213636460.html
 //
  * Adds the M150 command to set the LED (or LED strip) color.
  * If pins are PWM capable (e.g., 4, 5, 6, 11) then a range of
  * luminance values can be set from 0 to 255.
+ * For Neopixel LED an overall brightness parameter is also available.
  *
  * *** CAUTION ***
  *  LED Strips require a MOFSET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *  NOTE: A separate 5V power supply is required! The Neopixel LED needs
+ *  more current than the Arduino 5V linear regulator can produce. 
  * *** CAUTION ***
  *
+ * LED Type. Enable only one of the following two options.
+ *
  */
+
 //#define RGB_LED
 //#define RGBW_LED
 #if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
 // Delay (in milliseconds) before the next move will start, to give the servo time to reach its target angle.
 // 300ms is a good value but you can try less delay.
 // If the servo can't reach the requested position, increase it.
-#define SERVO_DELAY 300
+#define SERVO_DELAY { 300 }
 
 // Servo deactivation
 //

Marlin/src/config/examples/tvrrug/Round2/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/config/examples/wt150/Configuration.h

 //
 // M100 Free Memory Watcher
 //
-//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose
+//#define M100_FREE_MEMORY_WATCHER    // Add M100 (Free Memory Watcher) to debug memory usage
 
 //
 // G20/G21 Inch mode support

Marlin/src/gcode/gcode.cpp

         case 280: M280(); break;  // M280: Set servo position absolute
       #endif
 
+      #if ENABLED(BABYSTEPPING)
+        case 290: M290(); break;  // M290: Babystepping
+      #endif
+
       #if HAS_BUZZER
         case 300: M300(); break;  // M300: Play beep tone
       #endif

Marlin/src/gcode/gcode.h

  * M260 - i2c Send Data (Requires EXPERIMENTAL_I2CBUS)
  * M261 - i2c Request Data (Requires EXPERIMENTAL_I2CBUS)
  * M280 - Set servo position absolute: "M280 P<index> S<angle|µs>". (Requires servos)
+ * M290 - Babystepping (Requires BABYSTEPPING)
  * M300 - Play beep sound S<frequency Hz> P<duration ms>
  * M301 - Set PID parameters P I and D. (Requires PIDTEMP)
  * M302 - Allow cold extrudes, or set the minimum extrude S<temperature>. (Requires PREVENT_COLD_EXTRUSION)
     static void M280();
   #endif
 
+  #if ENABLED(BABYSTEPPING)
+    static void M290();
+  #endif
+
   #if HAS_BUZZER
     static void M300();
   #endif

Marlin/src/gcode/motion/M290.cpp

+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 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 <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(BABYSTEPPING)
+
+#include "../gcode.h"
+#include "../../module/probe.h"
+#include "../../module/temperature.h"
+#include "../../module/planner.h"
+
+/**
+ * M290: Babystepping
+ */
+void GcodeSuite::M290() {
+  #if ENABLED(BABYSTEP_XY)
+    for (uint8_t a = X_AXIS; a <= Z_AXIS; a++)
+      if (parser.seenval(axis_codes[a]) || (a == Z_AXIS && parser.seenval('S'))) {
+        float offs = constrain(parser.value_axis_units(a), -2, 2);
+        #if ENABLED(BABYSTEP_ZPROBE_OFFSET)
+          if (a == Z_AXIS) {
+            zprobe_zoffset += offs;
+            refresh_zprobe_zoffset(true); // 'true' to not babystep
+          }
+        #endif
+        thermalManager.babystep_axis(a, offs * planner.axis_steps_per_mm[a]);
+      }
+  #else
+    if (parser.seenval('Z') || parser.seenval('S')) {
+      float offs = constrain(parser.value_axis_units(Z_AXIS), -2, 2);
+      #if ENABLED(BABYSTEP_ZPROBE_OFFSET)
+        zprobe_zoffset += offs;
+        refresh_zprobe_zoffset(); // This will babystep the axis
+      #else
+        thermalManager.babystep_axis(Z_AXIS, offs * planner.axis_steps_per_mm[Z_AXIS]);
+      #endif
+    }
+  #endif
+}
+
+#endif // BABYSTEPPING

Marlin/src/inc/SanityCheck.h

  * Babystepping
  */
 #if ENABLED(BABYSTEPPING)
-  #if DISABLED(ULTRA_LCD) && DISABLED(I2C_POSITION_ENCODERS)
-    #error "BABYSTEPPING requires an LCD controller."
-  #elif ENABLED(SCARA)
+  #if ENABLED(SCARA)
     #error "BABYSTEPPING is not implemented for SCARA yet."
   #elif ENABLED(DELTA) && ENABLED(BABYSTEP_XY)
     #error "BABYSTEPPING only implemented for Z axis on deltabots."