Marlin 2.1

Marlin 2.1 contains all patches from 2.0.9.4 in addition to…

New Features

• ✨ Support for up to 9 axes (#23112, #24036, #24231, #23975)

Improvements

• 🚸 Better M350, M114 with more axes (#23986)
• 🚸 Fix, improve, update ProUI (#24251)

Configuration

• 💥 Num Axes / Multi-Stepper based on Driver Types (#24106, #24120)
• 🔧 LEVEL_BED_CORNERS => LCD_BED_TRAMMING

Issues Fixed

• 🐛 Fix BACKLASH_COMPENSATION compile (#24072)
• 🩹 Fix some parameters w/out values (#24051)
• 🎨 Fix/adjust warnings (#24225)
• 🚩 MPC update (#24253)
• 💥 Change M306 M to M306 H (#24258)

Build / Upload

• 🔨 BTT STM32G0B1RE xfer build (#24245)
• 🩹 Fix EXTRUDERS 0 manual move compile (#24255)

For Developers

• 🏗️ Extend AXIS_CHAR to include E
• 🧑‍💻 MAP macro for axis lists, etc. (#24191)
• 🧑‍💻 Forward-compatible axis strings (167672d, #24259)
• 🧑‍💻 Combined axis strings

Marlin 2.0.9.4

This release brings some major changes to Marlin, along with a few known issues. If you encounter any problems with Marlin 2.0.9.4, upgrade to 2.0.9.5 or 2.1.1, or try the nightly build of bugfix-2.1.x and please report any difficulties.

New Features

• ✨ M919 : Chopper Timing (#23400)
• ✨ M81 D / S - Power-off Delay (#23396, #23455)
• ✨ Temperature variance monitor (#23373)
• ✨ Firmware Upload via Binary Transfer (#23462)
• ✨ MagLev V4 probe by MDD (#23192)
• ✨ Long filename open/create/write (#23526)
• ✨ Optional HOST_STATUS_NOTIFICATIONS (#22833)
• ✨ More Nozzle Park move options (#23158)
• ✨ Dyze Design PT100 Amplifier Board (#23760)
• ✨ LCD Backlight Timer (#23768)
• ✨ M21 P / S / U - Select Volume (#23780)
• 🚸 M401 H - Report BLTouch HS State (#23724)
• ✨ ESP32 - Hardware PWM for fan, cutter, servos (#23802)
• ✨ Encoder button noise filter (#23925)
• ✨ STATUS_MESSAGE_TIMEOUT_SEC (#23135)
• ✨ Configurable FREEZE pin state (#23944, #23948)
• ✨ Add M3426 A<addr> parameter (#24130)
• ✨ SOUND_ON_DEFAULT option (#24102)
• ⚗️ Temperature Model Predictive Control (#23751, #23983, #23984, #24018, #24049, #24059)
• ✨ Autoreport Redundant Sensor option (#24014)
• ✨ DOGM Display Sleep (#23992)
• ✨ Laser Safety Timeout (#24189)

New Boards

• ✨ BOARD_CREALITY_V24S1_301 (#23620)
• 📌 Distinct BOARD_CREALITY_V422 (#23674)
• ✨ Add ZRIB v53, patch G35 Z drop, related issues (#23636)
• ✨ SAMD51 Bricolemon / Bricolemon Lite boards (#23658)
• ✨ Pxmalion Core i3 (#23711)
• ✨ MKS Robin Nano 3.1 (#23795)
• ✨ Weedo 62A Tina2 / Monoprice Cadet (#23817)
• 📌 PandaPi V2.9 – Standalone mode (#23908)
• ✨ enwi ESPNP (#24029)
• ✨ Creality CR-10 SmartPro (#24151)
• ✨ Add BOARD_CREALITY_V24S1_301F4
• ✨ BigTreeTech SKR3 - STM32H743 (#24271, #24272, #24275)

Improvements

• 🚸 Do G34 "Z Backoff" at full current
• 🚸 Include extra axes in position report (#23490)
• ⚡️ SPI+DMA+interrupt method (STM32 / MKS UI) (#23464)
• ⚡️ Tuned Thermistor 66 (T-D500) (#23585)
• 🚸 Restore active tool after ABL G29 (#23692)
• 🩹 Simplify quick homing feedrate (#23714)
• ⚡️ Apply PTC on all probing (#23764)
• 🚸 Universal X_AXIS_TWIST_COMPENSATION (#23828)
• ⚡️ Use seen_test in M422
• 🚸 Improve M422 error messages
• 🚸 Fix, extend X Axis Twist Compensation (#23745, #23911)
• ⚡️ G12 - Only require used axes to be homed (#23422)
• ⚡️ Fix noisy ADC - 16x oversampling with 12-bit ADC (#23867)
• 🚸 Allow one servo with cutter on RAMPS
• 🚸 Clear "heating/cooling" message on temp reached
• 🚸 Prevent accidental button press
• 🩹 Adjust manage_media for slow/late media init (USB FD) (#24015)
• ⚡️ Improve Sensorless homing/probing accuracy for G28, G33, M48 (#24220)

Issues Fixed

• 🚸 Refine stepper-driver-related G-codes (#23372)
• 🐛 Fix EEPROM_INIT_NOW build hash test (#23479)
• 🐛 Fix strlen_P parameter error
• 🐛 Fix Artillery Ruby (startup code, build flags) (#23446)
• 🚑️ Fix preheat target bug
• 🚑️ Fix M105 regression (#23505)
• 🐛 Fix M852 report (#23660)
• 🐛 Fix XYZEval::set(XY, Z) and (XY, Z, E) (#23704)
• 🐛 Fix XATC divide-by-zero (#23743)
• 🐛 Fix, improve PWM on AVR (#23463, #23520)
• 🐛 Fix conditional M81 suicide (#23549)
• 🐛 Fix SPI DMA and default mode (#23627)
• 🐛 Fix AVR 644/1284 Timer / PWM conflicts (#23629)
• 🍻 STM32 set_pwm_duty "on/off" for digital pins (#23665)
• 🩹 Prevent Z error with UBL + Park unscaled E move (#23568)
• 🐛 Fix dual MAX31865 initialization issues (#23496)
• 🐛 Fix missing u8g_esp32_spi (#23562)
• 🐛 Fix init of delta safe height (for G29, G33, etc.) (#23622)
• 🚸 Fix, Improve Power-Loss Recovery (#22828)
• 💥 Change M42 M to M42 T
• ✏️ Fix getLFNName parameter (#23752)
• 🐛 Fix TMC26X CS pins init (#23778)
• 🐛 Fix steps-to-mm with backlash (#23814)
• 🐛 ESP32 _delay_ms, fix u8g_esp32_spi.cpp (#23810)
• 🐛 Fix backlash applied steps when config changes (#23826)
• 🐛 Fix M_State_grbl when G29 calls G28
• 🩹 Improve and apply XATC reset() (#23840)
• 🐛 Emergency Parser with STM32 Mass Storage (#23827)
• 🐛 Fix G29 (#23887)
• 🐛 Fix UBL G29 Q1 bug
• 🐛 Fix Chiron new TFT SD print after reset (#23855)
• 🩹 Fix ADC math overflow
• 🩹 Print English to serial out
• 🐛 Fix status_printf alert level
• 🐛 Fix MMU2 buzz (#23943, #23950)
• 🐛 Use ADC_VREF for Filament Width ADC Vref (#23977)
• 🐛 Prevent BABYSTEP freeze
• 🩹 Fix PRINTCOUNTER with EXTRUDERS 0 (#24063)
• 🚸 Home Y before X on belt printers
• 🐛 Home Z to Max after Z_SAFE_HOMING
• 🩹 Apply 100% leveling correction below the bed
• 🐛 Fix STM32 Pins Debugging (#22896)
• ♻️ Refactor and fix ABL Bilinear (#23868, #24009, #24107)
• 🐛 Update M913, M914 report
• 🩹 Fix DEBUG_CARDREADER (#24023)
• 🩹 Fix ADVANCED_PAUSE_RESUME_PRIME check
• 🩹 Fix ESP32 servos, SD_IGNORE_AT_STARTUP
• ✏️ Fix Markforged endstops/G38 (#24141)
• 🩹 Fix Fan Tail Speed Init (#24076)
• 🩹 Fix accel dividend
• 🐛 Fix AIR_ASSIST (#24162)
• 🩹 Run TMC test last in setup (#24160)
• 🐛 Fix Due cli/sei (#24182)
• 🐛 Fix FTDI_EVE_TOUCH_UI reboot loop (#24195)
• 🐛 Fix Polargraph G92 command (#24223)
• 🐛 Fix SEGMENT_LEVELED_MOVES with UBL
• 🐛 Fix Leveling apply/unapply (#24188)
• 🩹 Fix G60/G61 debug code (#24231)
• 🐛 Fix M203 report
• 🐛 Fix min/max temp evaluation
• 🐛 Fix Tool Change priming (#21142)
• 💥 Change M201 G to S
• 🐛 Init Stepper SPI before PSU Control (#24269)

Boards / Pins

• 🎨 Pins and SDIO cleanup
• 📝 Consistent pin header orientation
• 🔧 Normal FET layout with Spindle/Laser (#23409)
• 🩹 RAMPS FET order overridable, E + Laser (#23428)
• 🩹 Fix RADDS+RRD encoder button
• 🐛 Fix EZBoard V2 (#23648, #23659, #23857)
• 🐛 Patch Creality RAMPS FET / FAN pins
• 🐛 Fix Ultimain 2 E-autofan pin mapping (#23466)
• 🐛 Finish and organize temp sensors (#23519)
• 🐛 Fix Octopus v1.x probe pin (#23548)
• 🐛 Fix RAMPS 1.4 Plus EXP headers (#23523)
• 📌 RAMPS AUX 1-2 headers (#23544)
• 🩹 Fix Robin Nano BOARD_INIT
• 🧑‍💻 Fix up some AUX / EXP pins (#23577)
• 🐛 Fix FYSETC S6, S6 V2 Serial RX pins (#23642)
• 🐛 Creality v4 cleanup, pin correction (#23666)
• 🐛 Fix RUMBA + MKS Mini12864 Neopixel pin (#23646)
• 🧑‍💻 Update MightyBoard FET pins (#23728)
• 📌 Creality RAMPS optional SD_DETECT_PIN (#23740)
• 📌 Fix, extend Index Rev03 Mobo (#23851)
• 🐛 MKS TinyBee - 2.5V ADC Vref (#23903)
• 🐛 Some EEPROM size fixes (#24113)
• 🐛 Fix MightyBoard Rev. E EX2, extra MOSFETs (#23976)
• 📌 SKR Mini V1.1 TMC UART Pins (#23970)
• 🩹 SKR2 Pins DIAG flag (#23968)
• 🐛 Fix MKS Gen. L - EEB (#23965)
• 🩹 Use LCD_CONTRAST_INIT in pins files
• 📌 Define RAMPS_SMART EXP headers, AZSMZ_12864
• 🐛 Fix Mightyboard LED pin, fan override (#24168)
• 🚸 Improve MKS SGEN_L V2, Robin Nano V3 pins (#24147)
• 🐛 Fix FLSUN Hispeed FIL_RUNOUT_PIN, MKS Robin Mini TFT pins (#24204)
• 🎨 Add EXP1/2 headers, adjust TFT pins (#24230)
• 🎨 Remove MKS custom pins, TinyBee cleanup (#24186)
• 📝 Fix Mightyboard MOSFET comments (#24183)
• 📌 Tenlog PSU pin (#24266)

Configuration

• 🩺 Assert FAN_SOFT_PWM where required (#23383, #23477)
• 🚸 Suppressible pin warnings (#23530)
• 🔨 Suppressible CONFIGURATION_EMBEDDING warning (#23545)
• 🎨 LCD_SCREEN_ROT_* => LCD_SCREEN_ROTATE
• 🎨 Move PROPORTIONAL_FONT_RATIO
• 🚸 Use Z_STEPPER_ALIGN_STEPPER_XY to enable
• 🔧 DWIN_CREALITY_LCD_ENHANCED => DWIN_LCD_PROUI
• 🔧 Move LASER_COOLANT_FLOW_METER to LASER_FEATURE
• 🔧 Allow board & probe dummy thermistors (#24165)
• 🔧 Remove LCD_SERIAL_PORT defaults, warn on auto-assign (#24170)

LCD / Controller

• 🩹 Fix Enhanced UI max E speed (#23387)
• 🐛 Fix RRW Keypad & Zonestar buttons (#23388)
• 🔧 Check Chiron LCD requirements (#23353)
• 📌 Define MKS Monster8 pins for MKS_MINI_12864
• 🩹 Reset DWIN CrealityUI print progress on start (#23481)
• 🚸 DWIN Enhanced improve, fix, and extend (#23240)
• 🎨 E3V2 corner leveling => tramming (#23375)
• 🔧 DWIN_MARLINUI sanity checks (#23399)
• 📺 Tune ULTI_CONTROLLER encoder, enable PCA9632 (#23461)
• 📌 LCD_FOR_MELZI for BTT E3 RRF (#23453)
• 🚸 BLTouch HS menu item for DWIN Enhanced UI (#23480)
• 🚸 12345.6 num-to-string
• 🚸 Wait for cooldown in MarlinUI power-off (#23476)
• 🚸 Fix E3V2 Enhanced UI time labels (#23502)
• 💄 MarlinUI+DOGM leveled bed bitmaps (#23539)
• 🐛 Fix PLR for E3V2 Enhanced UI (#23543)
• 💄 Improve Ender3 v2 DWIN MarlinUI (#23369)
• ✨ Z Offset Wizard for TFT_LVGL_UI (English) (#23489)
• 🐛 Fix LCD contrast/brightness init (#23567)
• 🐛 Fix Creality DWIN LCD with SKR Mini E3 V3 (#23593)
• 🐛 Fix DGUS_Reloaded G-code execution (#23592)
• 🚸 Better "Bed Tramming Done" dialog (#23616)
• 🩹 Init brightness/contrast later (#23645)
• 🚸 Align MKS UI heated bed status with HAS_MULTI_HOTEND (#23718)
• ✏️ Fix E3V2 display with BTT SKR Mini E3 v3 (#23719)
• ♻️ No ui.reinit_lcd on any ExtUI (#23722)
• 🚸 Case Light, LED menus for E3V2 DWIN Enhanced UI (#23590)
• 🚸 Enhanced UI => Professional UI - with updates (#23624, #23878)
• 📺 BTT SKR Mini E3 with Fysetc V2.1 / MKS V3 / BTT V1 Mini 12864 (#23793)
• ⚡️ E3V2 blank bg for S1 compatibility (#23822)
• 🩹 Fix DWIN E3V2 display issues by allowing re-init (#23879)
• 📌 Custom cable for Mini 12864 V1 + SKR Mini E3 V3.0 (#23936)
• 🐛 Fix MarlinUI on Ender 3 S1 (#23949)
• 🩹 Fix "elapsed" text on DOGLCD (#24087)
• 🐛 Fix MKS_MINI_12864 build for ESP32 (#24071)
• 🩹 Fix and clean up E3V2 draw (#23979, #24013)
• 🐛 Fix Manual Move cold extrude override (#24045, #24176)
• 🚸 Preheat menu improvements (#24017)
• 🐛 Fix PID edit menu for Bed, Chamber (#23987)
• ✏️ Fix FYSETC Mini Panel neopixel type (#24011, #24111)
• 🩹 Fix DGUS_PREHEAT_UI enable with DGUS_LCD_CLASSIC (#24066)
• 🐛 Fix ProUI / JyersUI leveling preheat (#24060, #24064)
• 🚸 More ExtUI events for ABL / UBL
• 🚸 DWIN/DACAI for Creality 4.2.3 (#24132)
• 🚸 ProUI APRIL2022 updates (#24084)
• 🔧 Bed/Chamber PID A...

Marlin 2.0.9.3

This release includes many fixes and improvements from contributors, testers, and co-developers.

Issues Fixed

• 🐛 Fix SKR Mini E3 V2 I2C-based EEPROM (#22919, #22955)
• 🐛 Fix MKS Robin Pro 1.0 LCD reset pin (#22937)
• 🐛 Fix G33 homing current (#22909)
• 🐛 Fix Tool Change Park (#22968)
• 🐛 Fix JyersUI ZOffset Multiplication (#22975)
• 🐛 Fix probe temp compensation maths (#23004)
• 🐛 More explicit allocation of solenoids (f179e25)
• 🐛 Fix Ender-3 V2 Enhanced SetFlow (#23016)
• 🐛 Fix børken E_DUAL_STEPPER_DRIVERS (#23017)
• 🐛 Fix Y_SERIAL_RX_PIN for FYSETC S6 (#23055)
• 🐛 Fix NEOPIXEL2_SEPARATE default color (#23057)
• 🐛 Fix serial_data_available (#23160)
• 🐛 Fix IDEX Duplication Mode Positioning (#22914)
• 🐛 Fix homing current for extra axes (#23152)
• 🐛 Fix loud_kill heater disable (#23314)
• 🐛 Fix IDEX + DISABLE_INACTIVE_EXTRUDER (#22925)
• 🐛 Fix max chamber fan speed (#22977)
• 🐛 Fix AUTOTEMP bug (thermal runaway) (#23025)
• 🐛 Fix serial PORT_RESTORE (and BUFFER_MONITORING) (#23022)
• 🐛 Fix MKS Robin E3/E3D Z Stop/Probe pins (#23034)
• 🐛 Fix EZBoard V2 board name (e8a5597)
• 🐛 Fix TFT backlight [STM32] (#23062)
• 🐛 Prevent AVR watchdogpile (#23075)
• 🍻 Get/clear reset source earlier (9b76b58)
• 🩹 Fix M503 report (#23084)
• 🐛 Fix FYSETC Cheetah 2.0 pins for production (#23104)
• 🐛 [LCP1768] Init PWM in set_pwm_duty (#23110)
• 🐛 Fix SENSORLESS_HOMING for 6-axis (cb1570d)
• 🐛 Fix G33, Delta radii, reachable (#22795)
• 🐛 Fix fast PWM WGM code (feffc19)
• 🐛 Init PROBE_ENABLE_PIN (#23133)
• 🐛 Fix TFT backlight sleep/wake (#23153)
• 🐛 Fix STM32 set_pwm_duty (#23125)
• 🐛 Fix STM32 FastPWM (77af48e, 52a44eb)
• 🐛 Fix TIMER_TONE for ZM3E4 (#23212)
• 🐛 Fix env:chitu_f103 (#23225)
• 🐛 HAL_reboot for native HAL (#23246)
• 🐛 Fix TWIBus Wire.begin call (#23183)
• 🐛 Fix Endstops::report_states (#23280)
• 🐛 Fix MARLIN_F103Rx variant SCK / MOSI pins (#23282)
• 🐛 Fix TFT_COLOR_UI Release Media issue (#23123)
• 🐛 Fix Chitu Z_STOP_PIN (#23330)
• 🐛 Fix Robin Nano v3 filament runout pins (#23344)
• 🏗️ Fix Maple HAL/STM32F1 PWM (#23211)
• 🐛 Fix and improve MAX31865 (#23215)

G-Code Changes

• ✨ M261 S I2C output format (#22890)

New Features

• ✨ Add option EVENT_GCODE_TOOLCHANGE_ALWAYS_RUN (#22960)
• 🐛 Add USE_TEMP_EXT_COMPENSATION options (#23007)
• ✨ Shutdown Host Action (#22908)
• ✨ Allow Low EJERK with LA, optional (#23054)
• ✨ M3426 to read i2c MCP3426 ADC (#23184)
• ✨ M115 flag EXTENDED_M20 (#22941)
• 🧑‍💻 Option allowing > 127 Neopixels (#23322)
• ✨ Support for BIQU B1-SE-Plus strain gauge probe (#23101)
• ✨ Fan tachometer support (#23086, #23180, #23199)
• ✨ MarkForged YX kinematics (#23163)
• ✨ X Twist Compensation & Calibration (#23238)
• ✨ Configuration embedding (#21321, #23303)
• ✨ Option to reset EEPROM on first run (#23276)
• ✨ BLTouch High Speed mode runtime configuration (#22916, #23337)
• ✨ Per-axis TMC hold multiplier (#23345)

New LCD / Controller

• ✨ BigTreeTech TFT35 SPI V1.0 (#22986)
• ✨ WYH L12864 LCD (Alfawise Ex8) (#22863)
• ✨ BigTreeTech Mini 12864 V1.0 (#23130)

New Boards

• ✨ ESP32 Panda_ZHU and Panda_M4 (#22644)
• ✨ MKS Eagle (STM32F407VET6) board (#22897)
• ✨ Eryone Ery32 mini (STM32F103VET6) board (#22956)
• ✨ Creality v2.4.S1 (Ender 7) board (#23010)
• ✨ BTT Octopus Pro V1.0 (STM32F446ZET6) (#22971)
• ✨ BTT Octopus Pro V1.0 (STM32F429ZGT6) (#23008, #23072)
• ✨ "Rutilea" ESP32 board (#22880)
• ✨ Artillery Ruby (STM32F401RCT6) (#23029)
• ⚡️ BTT002 (STM32F407VET6) variant, MK3_FAN_PINS flag (#23093)
• ✨ FYSETC Spider v2.2 (#23208)
• ✨ BigTree SKR 2 with F429 (#23177)
• ✨ EasyThreeD ET4000+ board and UI (#23080)
• ✨ BigTreeTech SKR mini E3 V3.0 (STM32G0B1RET6) (#23283)
• ✨ Creality3D V4.2.3 / Ender-2 Pro board (#23307)
• ✨ MKS TinyBee (#23340)

Improve Boards/Pins

• 🎨 Define Octopus allocated endstop pins (#22882)
• 🩹 Adjust GTR 1.0 ST7920 display delay (#22904)
• 💡 Sub-include pins labels (b108741)
• ⚡️ Add'l PCINTs for Mega Extended (#23019)
• ⚡️ Formbot ST7920 delays, intentional X2 pins (#22915)
• 🎨 Refactor MOSFET pins layout (#22983)
• 🩹 Retain LCD pins with motor expansion (#23024)
• 📌 Default NeoPixel pin for MKS Robin E3/E3D (#23060)
• 📌 'STOP' auto-assign, some Chitu V9 pins (#22889)
• 🎨 MPX ARM Mini pins cleanup (#23113)
• 🩹 UM2 extruder cooling fan on PJ6 (#23194)
• 🩹 Assume 4K EEPROM for RUMBA32 BTT (#23205)
• 🔧 Cutter pins for SKR 2.0 (05b5727)
• 📌 More Longer3D LKx Pro serial tests (#23260)
• 🚸 Onboard SD for SKR 2.0 / SKR PRO (#23274)
• 📌 Overridable probe-related pins (#23107)

Improvements

• 🚸 Default T0 for M569, M906, M913 (#23020)
• 🚸 Tweaks to UBL G29 Q (12f8168)
• 🚸 More flexible Probe Temperature Compensation (#23033)
• ⚡️ Controller Fan software PWM (etc.) (#23102)
• 🚸 Simplify touchscreen calibration for SimUI (#23124)
• ⚡️ Reduce calls to set fan PWM (#23149)
• 🚸 Park nozzle on "loud kill" (#23172)
• 🩹 SD abort requires open file (daa8fff)
• 🩹 Init fan speed at boot (#23181)
• 🚸 Use M600 for disabled MMU (#21865)

Configuration

• 🔧 Remove obsolete G34 sanity check (#22929)
• 🔧 Safety feature warnings (522cdd5)
• ✅ Warn about dummy thermistors (c3a4e6b)
• 🔨 Move Creality 4.2.2 warning (49e8def)
• 🔧 Add, update TFT sanity checks (#22928)
• 🔧 Fewer alerts about Z_SAFE_HOMING (a0da7e8)
• 🔧 Configuration version 02000903 (6f59d81)
• 💚 Update Ender-3 V2 config path (692c9a6)
• 🔧 Endstop / DIAG homing conflict warning (#23050)
• 🔧 Fix unknown board test (c781ecc)
• 🔧 Warning for IGNORE_THERMOCOUPLE_ERRORS (#23312)
• 🚑️ FAST_PWM_FAN default 1KHz base freq. (#23326)
• 🔧 Sanity check MMU2_MENUS (226ee7c)
• 🚸 Expose sub-options for E3V2 Enhanced (#23099)
• 🔧 SOUND_MENU_ITEM for E3V2 (884308f)
• 🔧 Chamber Fan index option (#23262)
• 🔧 Group FAST_PWM_FAN options (#23331)
• 🔧 Move MOTHERBOARD closer to top (677568e)

Build / Upload

• 🐛 Fix Arduino IDE compile error (#22877)
• 🩹 Fix EXTRUDER 0 compile warning (#22868)
• 🐛 Fix FYSETC Cheetah v2.0 build (#22926)
• 🎨 Fix pinsDebug_list warnings (5f6d9e9)
• 🔨 Fix older GCC CXXFLAGS warning (3015842)
• 🎨 Fix redefine warnings (#23061)
• 🎨 Suppress type warning (#22976)
• 🐛 Fix MMU1 compile (#22965)
• 🎨 Pragma GCC cleanup (aa198e4)
• 🩹 Fix pragma ignored for older GCC (#22978)
• 🩹 Fix RGB case light compile (#23108)
• 🩹 Fix include path (#23150)
• 🩹 Fix non-PWM cutter compile (#23169)
• 🐛 Fix LCD_BED_LEVELING compile (#23298)

Build Env

• 🔨 Add 'opt_find' to find matching options (40cb7cf)
• 🔨 Port libsdl2_net required for macOS simulator (99d51af)
• 🔨 Update 'pio vscode init' detection (2c6fe45)
• 🔨 Delete after encrypt. Lerdge encrypt only once (b4904cc)
• 🔨 Help for GDB remote debugging (5cbb820)
• 🔨 Support ABM in mf scripts (20c7477)
• 🔨 Update git helper scripts (5efef86)
• 🔨 Script 'mfprep' finds pending commits (a0a5740)
• 🔨 Fix IntelliSense / PIO conflicts (#23058)
• 🔨 Port libsdl2_net required for macOS simulator (1d8941d)
• 🔨 Bring Makefile up to date (f637e1c)
• 🔨 Configurable firmware bin filename (a2349fc)

Language

• 🚸 Change "SD" to "Media" or "SD/FD" (#23297)

User Interface

• 🐛 Fix ExtUI Pause messages (#22874)
• 🐛 Fix E3V2 width/height defines (#22994)
• 🐛 Fix JyersUI current positions (scaling) (#23005)
• 🚸 E3V2 Enhanced cosmetic fixes (#23009, #23100)
• 🎨 Update MKS UI for no bed, extruder (#22938)
• 🚸 Tweak MKS UI G-code console (af08f16)
• 🐛 Fix JyersUI SHOW_REMAINING_TIME (#22999)
• 🐛 Fix E3V2 (CrealityUI) position display (#23023)
• 🚸 Scroll long filename on MKS TFT (#23031)
• 🐛 Fix E3V2 (CrealityUI) Tune/Prepare > Zoffset (#23040)
• 🐛 Fix DGUS Reloaded status message (#23090)
• 🐛 Fix JyersUI scrolling filename, etc. (#23082)
• 🚸 Indicate Preheating for probe / leveling (#23088)
• 🚸 LCD_SHOW_E_TOTAL for TFT_COLOR_UI (#23127)
• 🐛 Fix ACTION_ITEM with nullptr (#23195)
• 🐛 Fix MKS LVGL UI retraction (#23267)
• 🚸 Show MM'SS during first hour (#23335)

For Developers

• 🔨 Improve 'mftest' error message (61b574f)
• 🎨 Tweak FORCE_INLINE (d137f30)
• 🩹 Fill gaps in pinsDebug_list (#23051)
• 🎨 Axis name string interpolation, with examples (#22879)
• 🎨 Update F string declarations (433a27e)
• 🎨 Apply F() to E3V2 titles, popups (59503c6)
• 🎨 Apply F() to G-code subcommands (2b9ae0c)
• 🎨 Apply F() to G-code suite and queue (46c53f6)
• 🎨 Apply F() to serial macros (433eedd)
• 🎨 Apply F() to status message (360311f)
• 🎨 Apply F() to Host Actions strings (7626d85)
• 🎨 Apply F() to some ExtUI functions (c3ae221, d9f7de7)
• 🎨 Apply F() to UTF-8/MMU2 string put (9cf1c3c)
• 🎨 Apply F() to G-code report header (cabd538)
• 🎨 Apply F() to various reports (24dbece, d48cb11)
• 🎨 Apply F() to MKS UI errors, assets (492d704)
• 🎨 Apply F() to kill / sendinfoscreen (3d102a7)
• 🎨 Refactor Host Actions as singleton (f80bcdc)
• 🎨 Add MKS UI goto_previous_ui (de77dfc)
• 🎨 Define HAS_PREHEAT conditional (84f9490)
• 🎨 Standard material presets behavior (205d867)
• 🎨 Standard 'cooldown' method (d29a901)
• ⚗️ Use pwm_set_duty over analogWrite to set PWM (#23048)
• 🍻 Preliminary fix for Max31865 SPI (#22682)
• 🏗️ Planner::busy() (#23145)
• 📌 Biqu BX temporary framework workaround (#23131)
• 🩹 Handle nullptr in CardReader::printLongPath (#23197)
• 🩹 Coerce pin_t in set_pwm_duty macros (#23273)
• 🎨 Rename HAL timer elements (9b1c0a7)
• 🏗️ Rework STM32 timer frequency protection (#23187)

General Cleanup

• 🎨 Rename MarlinUI::zoffset_overlay (b8c32e2)
• 💡 Update old gnu.org links (641bae6)
• 🎨 Fix up MKS UI defines (01a0f3a)
• 🎨 Apply HAS_MULTI_HOTEND conditional (c...

Marlin 2.0.9.2

This maintenance release includes many fixes and improvements from contributors, testers, and co-developers.

G-Code Changes

• ✨ M115: Axis Count (#22219)
• ✨ Enable M20 L with LONG_FILENAME_HOST_SUPPORT (#22271)
• ✨ M256 LCD brightness (#22478)
• ✨ D576 Buffer Monitoring (#19674)
• ✨ M76 Host Pause Feature (#21738)
• 🚸 G33 R and O options (#22707)
• ✨ M282 Pn - Detach Servo (i.e., M280 Pn S-1) (#22760)

New LCD / Controller

• ✨ Ender-3 V2 Display for SKR E3 Turbo (#22229)
• ✨ DWIN LCD for BTT SKR Mini E3 (#22288)
• ✨ MKS Mini12864 v3 for MKS Robin Nano V2/3 (#22285)
• ✨ MKS Mini12864 v3 for Robin E3/E3D (#22368)
• ✨ Add DGUS_LCD_UI_RELOADED (#21931)
• 📺 MKS MINI12864 V3 for Robin E3P, etc. (#22453)
• ✨ Ender-3 V2 DWIN LCD with MarlinUI (#22594)
• ✨ Ender-3 V2 DWIN LCD with JyersUI (#22422, 3ee27e7, #22745)
• ✨ Ender-3 V2 DWIN LCD CrealityUI / Enhanced (#21942, #22728, #22733, #22844, #22850, #22851)

New Boards

• ✨ FLY Mini for stm32duino (#22355, #22356, #22364)
• ✨ Chitu3D V9 board (#22401)
• ✨ MKS Monster8 board (#22455, #22777)
• ✨ Simulator HAL and build targets (#22418, #22516)
• ✨ Zonestar ZM3E2, ZM3E4 V1, ZM3E4 V2 (#22498)
• ✨ Add BOARD_TH3D_EZBOARD_LITE_V2 based on HAL/STM32 (#22621)
• ✨ GT2560 V4.x A20 (#22664)
• ✨ Index Pick-and-Place board Rev.3 (#22647)
• 📌 Creality 4.3.1 board variants (#22704)
• ✨ Protoneer CNC-Shield 3.00 (#22715)
• ✨ MKS Robin Nano V1.3 (STM32F407VET6) (#22749)

New Features

• ✨ MSC Support for STM32 + SDIO boards -> SKR 2 (#22354)
• ✨ Mixer Presets (#21562)
• ✨ Power-off confirm / beep options (#22191, #22222)
• ✨ Homing submenu option (#22692)
• ✨ Add TEMP_SENSOR_BOARD (#22279, #22342, #22343, #22344, #22350)
• ✨ Add BOARD_RUMBA32_BTT (#22607)
• ✨ Creality3D CR-30 PrintMill (bba7c00)
• ✨ TFT Screen/Backlight Sleep (#22617)
• ✨ Polargraph / Makelangelo kinematics (#22790)

Issues Fixed

• 🐛 Fix PTC/BTC whole number tests (#22255)
• 🐛 Fix ExtUI lcd_clicked definition (#22257)
• 🐛 Fix manage_heaters recursion on servo move (#22313)
• 🐛 Fixes for BTT Octopus (#22314)
• 🐛 TM3D fixes and improvements (bc459a7)
• 🐛 Fix SD pins for MKS Robin Lite (b1c5afa)
• 🐛 Fix Robin Nano V3 X_DIAG_PIN (#22340)
• 🐛 Define MT_DET_PIN_INVERTING for MKS_ROBIN_NANO_V3 (#22348)
• 🐛 Fix Einsy RAMBo FAN1_PIN (#22305)
• 🎨 Minor cleanup of TFT/FSMC pins (650e1dd)
• 🐛 Fix AVR DELAY_US int overflow (#22268)
• 🐛 Fix redundant heater / sensor pin assignments (#22309, #22196)
• 🐛 Fix M913 typos (#22385)
• 🐛 Fix UBL G29 J - Vector3 regression (e190684)
• 🐛 Fix G2/G3 angular motion calculation (#22407)
• 🐛 Fix PAUSE_PROBE_DEPLOY_WHEN_TRIGGERED (bcc31f6)
• 🐛 Fix 3-point leveling position (12581bc)
• 🐛 Fix delta calibrate manual move scale (#22430)
• 🐛 Reset workDirDepth in cdroot() (#22441)
• 🐛 Fix extra E move in toolchange with ..._NO_RETURN (#22504)
• 🐛 Fix report_a_position ABC criteria (ac64d69)
• 🚸 Prevent M42 unintentionally changing pin to OUTPUT (#22493)
• 🐛 Fix G38 with probe on Z_MIN (#22452)
• 🐛 Fix up endstop flags (#22487, #22525)
• 🐛 Fix fan index for Singlenozzle, chamber fan (fefde2a)
• 🐛 Fix CoreXY plus extra axes (0c0f84b)
• 🚸 Set M122 interval only with S0 or Pn (418743c)
• 🔨 Fix (RRF E3) RX/TX buffer size override (#22475)
• 🐛 Fix M575 port index output (#22553)
• 🐛 Fix STM32 delay, double reset in FSMC TFT init (#22584)
• 🐛 Fix LPC176x M43 Pins Debugging (#22611, #22680)
• 🐛 Fix Multi-Endstop stepping (#22625)
• 🩹 Sensorless homing tweak (53df1df)
• 🐛 Fix SDSUPPORT for SKR CR-6 (#22668)
• 🐛 Fix Mixing code typos (#22697)
• 🐛 Fix LPC1768 SD-based EEPROM debug (22bf774)
• 🐛 No probe enum for DELTA + SENSORLESS_PROBING (d6a87aa)
• 🐛 Fix ENABLED => EITHER typo (#22756)
• 🐛 Fix CUSTOM_MENU_MAIN_SCRIPT_DONE (59ad935)
• 🐛 Fix old spindle/laser options (92eb819)
• 🩹 Fix DWIN Enhanced Tune menu during homing (#22773)
• 🐛 STM32 ADC Resolution = 12 bit (or ADC_RESOLUTION) (#22789, #22798)
• 🐛 Fix anycubic_i3mega_lcd debug macros (#22820)
• 🐛 Fix reset_hotend_offsets (d338872)
• 🐛 Add 'static' to fix 'duplicates' (#22826)

Improvements

• 🎨 Call millis() once in manage_inactivity (#22363)
• 🏗️ Allow headless Flow Meter (#22234)
• 🚸 Retain power during Pause (#22227)
• ⚡️ Improve Sensorless homing/probing for G28, G33 (#21899)
• 🐛 Followup to 6 linear axes (#22482)
• 🚑️ Init FastIO before anything else (#22508)
• ⚡️ Simplify PROBING_STEPPERS_OFF (#22581)
• 🐛 Update H-bot / Core for 6-axis (#22600)
• ⚡️ Improve G2/G3 arc handling (#22599)
• 🩹 Allow M42 S0/1 analogWrite on PWM pins (STM32) (#22631)
• 🚸 Per-hotend Watch items (3a83516)
• 🎨 Apply more HAS_DELTA_SENSORLESS_PROBING (17c9450)
• ⚡️ Handle overlapping enable pins in M17/M18 (#22824)

Configuration

• 🚸 Sanity-check Slim LCD menus with Probe Offset Wizard (#22259)
• 📝 Update Z_SAFE_HOMING description (4235e23)
• 🎨 Optional Custom Button description (#22336)
• 🐛 Fix BTC_SAMPLE_RES sanity check (#22394)
• 🐛 Ensure Software SPI pins for Max Thermocouple (#22389)
• 🔧 Sanity-check Mixing plus Disable Inactive Extruder (d49a26b)
• 🔧 Sanity-check DEFAULT_EJERK with LIN_ADVANCE (eba0ae4)
• 💚 Fix tests for new sanity-checks (4e54fa2)
• 📝 Describe DGUS display options (#22443)
• 🚸 Better error for MOTHERBOARD not defined (#22551)
• 🎨 Tweak M73 condition (9c19d47)
• ♻️ Consolidate PSU_CONTROL (#22304)
• 🔧 Set Z_PROBE_OFFSET_RANGE_MIN/MAX for MBL (#22663)
• 📝 Update PID_PARAMS_PER_HOTEND comment (#22694)
• 🩹 Fix 'ms' warning (cc3abcd)
• 🎨 Use largest default ST9720 delays (#22713)
• 🔧 Sanity checks for Ender 3 V2 (72d7bbb)
• 🩹 Warning for User Feedback requirement (64acb9f)
• 🔧 SPINDLE_LASER_PWM => SPINDLE_LASER_USE_PWM (de4eed3)
• 🔖 Configurations version 02000902 (0330432)
• 🔧 Add MANUAL_FEEDRATE sanity-check (023eaab)
• 🔧 Sanity-check BLTOUCH_SET_5V_MODE on 5V pins (#22840)

Build / Upload

• 🎨 Check flags without ENABLED (78c2eb6)
• 🐛 Fix MKS UI compile (#22388, #22395)
• 🎨 Fix unused lambda warning (#22399)
• 🩹 Init var to suppress invalid warning (#22396)
• 🐛 Fix STATUS_COMBINE_HEATERS compile (#22405)
• 🐛 Fix 5-axis no extruder compile (74b0133)
• 🐛 Fix DGUS displays compile (#22464)
• 🐛 Fix sprintf_P compile error (Maple) (#22479)
• 🎨 Fix "'EEPROM' unused" warning (#22511)
• 🔨 Fix HAL/STM32 F103Zx builds (#22610)
• 🩹 Fix TOUCH_UI_FTDI_EVE warnings (ee1c103)

Build Env

• 🐛 Fix Arduino IDE build (TOUCH_UI_FTDI_EVE includes) (#22276)
• 🔨 FYSETC S6 small bootloader target (#22207)
• 🐛 Fix Maple / STM32 serial buffer (#22292)
• 📌 Require U8glib-HAL@~0.5.0 (#22324)
• 🔨 Clean up build scripts (#22264)
• 🔨 Update LPC176x platform to 0.2.8 (#22333)
• 🔨 Consolidate STM32 extra_scripts (#22365)
• 🔨 More HAL/STM32 targets (#22358, #22369)
• 🐛 Fix Longer3D build environment (#22378)
• ♻️ Refactor STM32 ini files (#22377)
• 💚 Specify compatible Teensy @4.12 (#22448)
• 🔨 Fix: BIGTREE_E3_RRF doesn't use user RX/TX sizes (#22475, a348f8e)
• 🔨 Update Longer and Chitu envs (#22467)
• 🐛 Fix Longer3D STM32 boot, add Maple test (#22473)
• 🔨 Offset/encrypt/rename for Maple STM32F1 (#22477)
• 🐛 Fix MKS 'USB Flash MSC' environments (#22515)
• 🏗️ Define HAL_STM32 when building for HAL/STM32 (#22537)
• 🔨 Fix FYSETC S6 envs (#22421)
• 🔨 Use zip link for MarlinSimUI (65e3911)
• ⬆️ TMCStepper 0.7.3 (718227a, #22608)
• 🔨 Melzi with OptiBoot build (#22630)
• 🔨 Set Longer3D timers in variant (#22632)
• 🐛 Fix Trigorilla Pro HAL/STM32 build offset (#22761)
• 🩹 Add MarlinSPI fallback to more HALs (b7f95dc)

Improve Boards/Pins

• ✨ MKS Robin Nano v3 + TFT_LVGL_UI + WiFi module (#22109, 2a4ee1a)
• 🎨 BTT SKR Pro pins auto-assign (#22411)
• 🔧 Octopus SPI display pins, fix USB build env (#22412)
• 📝 SKR E3 Turbo custom cable description (#22426)
• 🐛 Fix some board names (2aad79f)
• 🐛 Fix Longer3D SDSS / SD_SS (#22444)
• 🐛 Fix SKR Pro bad directive (#22438)
• ⚡️ Larger FYSETC S6 I2C EEPROM size (#22424)
• 🐛 Allow SKR Pro CONTROLLER_FAN_PIN override (a2759bc)
• 📌 MKS pins for PSU_CONTROL (#22528)
• 🐛 Fix some BTT SKR2 pins (#22558)
• 🐛 Fix Longer3D PWM/timer pins (#22583)
• 🎨 Update "MKSPWC", some other pins (#22557)
• 🎨 Tweak TMC software serial pins (0aa87af)
• 🎨 Define EXP1/2 headers (6769718, #22641, #22628, 6bf2be6)
• 🐛 BTT Octopus X MAX pin for IDEX (#22654)
• 🔨 Enhance Lerdge pins, TFTs, and variants (#22658)
• 🎨 Handle more pre-defined pins in pins_postprocess.h (#22771)
• 📝 Update some pins comments (ded719c)
• 🎨 Less use of #undef for RAMPS pins (99647fa)

Language

• 🌐 "Level Corners" => "Bed Tramming" (157c60c)
• 🌐 Update Russian and Ukrainian (#22290)
• 🌐 Update Hungarian language (#22307, #22678)
• 🌐 Update French language (#22323)
• 🌐 Update Italian language (#22645)
• 🌐 Update Slovak language (#22752)
• 🌐 Update Greek language (#22799)
• 🌐 Update menu titles, add more IJK (#22605)
• 🌐 MSG_PROBING_MESH => MSG_PROBING_POINT (c14b162)
• 🌐 Tweak language selection (c2796fb)
• 🌐 Update "Homing" for some languages (#22706)
• 🌐 Reduce language file sizes (be8e826)
• 🌐 Skip non-essential translations (669b684)

User Interface

• 🚸 Filament Change add confirm step (#22277)
• ♻️ Fix up and use YESNO_ITEM macros (968c3b7)
• 📺 Fix and optimize FTDI Eve Touch Interface (#22273, #22347, #22361, #22427, #22439, #22459, #22468, #22500, #22530, #22619, #22651)
• 🐛 Fix HAS_KILL && SOFT_RESET_ON_KILL soft reset button logic (#22269)
• 📺 ExtUI pause state response (#22164)
• 🚸 Limit LCD delta endstop adjustment like M666 (c746b1a)
• 🚸 M666: Fix value filter, add report (#22337)
• 🐛...

Marlin 2.0.9.1

This maintenance release includes a number of fixes and improvements from contributors, testers, and co-developers.

Issues Fixed

• 🐛 Fix Air Assist (#22159)
• 🩹 Extruders 0 patch for PWM Motor Current (#22163)
• 🐛 Fix env validation for 1280/2560 boards (#22150)
• 🐛 Fix MKS Robin E3 build (#22149)
• 🐛 Fix IJK axis references, E stepper indices (#22176, 906fa05)
• 🐛 Fix dual Neopixels (#22174)
• 🐛 Fix heater display options/compile (#22185)
• 🐛 Fix compact sensitive pins array (#22184)
• 🐛 Redundant Temp Sensor followup (#22173)
• 🐛 Fix LCD define typos (927a1a1)
• 🐛 Define 'HEAD' axes for Markforged (cce585f)
• 🐛 Fix Z_MULTI_ENDSTOPS + NUM_Z_STEPPER_DRIVERS 4 compile (#22203)
• 🔧 Fix E.S.T. sanity-check errors (#22224)
• 🐛 Trigger existing endstops on G38 hit (4763116)
• 🐛 Fix Octopus build on case-sensitive FS (#22206)

Improved / Optimized

• ✨ Update/extend Quiet Probing (#22205)

LCD / Controller

• 🌐 Update Russian language (#22193)
• 🌐 Update Ukrainian language (#22183)
• 🌐 Update Italian language (#22182)
• 🚸 MarlinUI Move Z >= 1000 (#22192)
• 🎨 Fix and enhance FTDI Eve Touch UI (#22189, #22223)

Hosts / Protocols

• 🚸 Include 'H' value in M412 report (#22138)

Boards / Pins

• 🐛 TFT encoder pin for BTT GTR (#22162)

General Cleanup

• 📝 Update probe heating value (34066c1)
• 💡 Add G28 L description (#22144)
• 🎨 Cosmetic cleanup (f2f23e8, 651f15f, ec518e6, 003ce25)
• 📝 Update TMC SPI endstops comment (#22221)

Marlin 2.0.9

Marlin 2.0.9 is a progressive release featuring a major overhaul of the motion system. The number of linear axes can now be configured, allowing anywhere from one linear axis (X only) up to a total of six (X, Y, Z, U, V, W). The names of the axes can also be customized to your liking (barring conflicts with other G-code parameters).

New Features

• ✨ TMC Driver distinct baudrates (#22008)
• 🏗️ Support for up to 6 linear axes (#19112, #22056, #22068, #22075, #22094, #22112)
• ✨ Add Laser Based I2C Ammeter Feature (#21835, #22079)
• ✨ More flexible redundant temp sensor (#22085)
• ✨ Single Extruder with Dual Stepper Drivers (#21403)
• ✨ Redundant Part Cooling Fan (#21888)

New Machines and Boards

• ✨ BigTreeTech Octopus V1.1 (#22042)

LCDs and Controllers

• 🌐 Update Slovak language (#22000)
• 📺 Fix and enhance FTDI EVE Touch UI (#22047)
• 🩹 Fallback ID for MKS TS35 V2.0 (#22031)
• 🎨 Reorganize FTDI Touch UI variants (#22066)
• 🎨 Fix and improve FTDI Eve Touch UI (#22093)
• 🌐 Update Hungarian language (#22083)
• 🐛 Fix ExtUI/DGUS Celsius display (#22121)
• 🐛 Include common TFT driver macros (#22125)
• 🎨 ExtUI "user click" and other tweaks (#22122)
• ✨ MULTI_VOLUME for Color UI and MarlinUI (#22004)

Optimized / Improved

• ♻️ Refactor Linear / Logical / Distinct Axes (#21953)
• ⚡️ Optimize Sensitive Pins array (except STM32) (#22080)
• ⚡️ Home Z (and maybe XY) at the start of G35 (#22060)

Fixed Boards / Pins

• 🎨 Reorganize BTT_E3_RRF_IDEX_BOARD (b99411b)
• 🎨 Clean up stops, sdss pins (dc202b3)
• 🐛 Fix Creality v4 servo timer (#22021)
• 🔧 EEPROM options for BTT SKR 1.4 (#22092)
• 🐛 Fix boot / SD for STM32 (F103Rx) boards (#22087)
• 🔨 Robin Nano V3 overridable POWER_LOSS_PIN (#22123)
• 🔨 Fix Serial+MSC for _USB envs (#22116)
• 🔥 Remove Chitu default Touch Calibration (#22133)

Issues Fixed

• 👽️ Fix usb-host-msc-cdc-msc issue (#22025)
• 🐛 Fix Z endstop enum (72b9f84)
• 🐛 Fix MMU compile with >5 EXTRUDERS (#22036)
• 🐛 Fix M140 print job timer autostart (#22046)
• ✨ Update G34 for 4x Z steppers (#22039)
• ♻️ Patches for Zero Extruders (with TMC) (82ea06e)
• 🐛 Fix small/huge I2C EEPROM address (#22081)
• 🐛 Fix UBL 'R' parameter and adjust 'P' (#22129)
• 🚑️ Prevent BFT unaligned compressed data corruption (#22134)
• 🐛 Prevent stepper sleep during long UBL idle (#22137)

Configuration

• 🔧 Check G29_RETRY_AND_RECOVER requirements (#21921)
• 🔧 Expose hidden BLTOUCH setting changes (#22069)
• 🔧 Enforce BLTouch settings (#22086)
• 🐛 Use whole PROBE_TEMP_COMPENSATION values (#22130)

New HAL/STM32 Targets

• 🔨 Creality v4 with STM32 HAL (#21999)
• 🐛 Fix env:STM32F103RE maple/unified split-up (#22019)
• 🔨 MKS Robin E3 for HAL/STM32 (#21927)
• 📦️ STM32F103RE_btt(_USB) with HAL/STM32 (#22040)
• 📦️ Malyan M200 with HAL/STM32 (#22052)
• 👽️ Include <EEPROM.h> in STM32 (for now) (#22054)

Build / Upload

• 📌 Use U8glib-HAL@~0.4.5 (2505357)
• 🐛 Fix Probe Temp Calibration compile (#22032)
• 🔨 Move FLY_MINI env to stm32f1.ini (c207111)
• 🔨 Consolidate BTT linker scripts (62dc3e7, #22038)
• 🐛 Fix STM3R / BEAST envs (#22028)
• 📌 Update FYSETC E4 to espressif32@2.1.0 (#22049)
• 🔨 MightyBoard envs for Auto Build Marlin (#22100)
• 🔨 Envs for BTT SKR Mini with RET6 (512K) (#22050)
• 🏗️ Refactor build encrypt / rename (#22124)

General Cleanup

• 📝 Update G61 comment (8f59d44)
• ⚰️ Remove obsolete CUSTOM_SPI_PINS (#22058)
• 📝 Describe G12 XYZ (799a4ec)
• 🔨 Remove obsolete ON_BOARD_SPI_DEVICE (87344ae)
• 🎨 Clean up LPC1768 SPI init (fd3f7b3)
• 📝 Number SKR EXP headers (c221ee1)
• 🩹 Use #pragma once in pins files (9bf5cdd)
• 🎨 General cleanup of extui/dgus (d5510ea)

For Developers

• 👷 Add caching to CI workflow (0e40d47)
• ⚗️ 32-bit float constants (STM32F1) (#21996)
• 🔧 Treat TPARA like SCARA in mfconfig (62a5957)
• 🎨 Adjust some conditionals (0e1e159)

Marlin 2.0.8.2

Marlin 2.0.8.2 is a maintenance release with a number of small improvements and issues fixed.

This release adds cap:HOST_ACTION_COMMANDS:0/1 to the M115 extended capabilities report so hosts like OctoPrint can check for basic host-firmware interaction with //action: commands. For more complete interactivity you should enable HOST_PROMPT_SUPPORT and this will report cap:PROMPT_SUPPORT:1 to the host.

New Machines and Boards

• ✨ Malyan M180 (#21992)

New Features

• ✨ MEDIA_MENU_AT_TOP for MarlinUI (#21925)
• ✨ Independent baud rates (#21949)

Host and Protocol

• 🚸 cap:HOST_ACTION_COMMANDS (#21987)

Configuration

• 🥅 Add MESH_EDIT_MENU sanity check (#21922)

Board / HAL

• 🐛 Fix BTT002 variant MMU2 serial pins 🧩 (#21980)
• 🐛 Fix Selena Compact probe pin (83f9413)
• 🐛 Fix Octopus High Speed USB (#21961)
• 🐛 Fix MKS Robin E3 BLTOUCH and Fan PWM timer conflicts (#21889)

LCD / Controller

• 🌐 Update Polish language (#21993)
• 🩹 Improved SKR2 12864 LCD Delays (#21956)
• 📝 Update ExtUI example (f60965a)

Optimized / Improved

• ♻️ LEDs refactor and extend (#21962)
• 🎨 Combined M104/M109 and M140/M190 code (e573611)

Other Issues Fixed

• 🩹 Fix multi_volume + SDIO onboard compile (#21975)
• 🐛 Fix G29 K value (f1f622d)
• 🐛 Fix EEPROM_CHITCHAT (#21934)
• 🐛 Fix flowmeter calculation (#21959)
• 🐛 Fix wrong Z_ENDSTOP flag bit (#21963)
• 🐛 Fix Toshiba FlashAir (SDCARD_COMMANDS_SPLIT) (#21944)
• 🐛 Fix DELTA with SENSORLESS_PROBING

Build and Upload

• ⚡️ PIO filters for M117, M300 and M414 (#21972)
• 🐛 Fix envs using mks_encrypt.py (#21933)
• 🐛 Fix compile with PREVENT_COLD_EXTRUSION off (94e67a0)
• 🐛 Fix Teensy PINS_DEBUGGING compile (#21958)

For Developers

• 🎨 Macros for optional arguments (#21969)
• 🎨 Null heating message method (d1502f7)
• ♻️ Refactor axis homing/trusted state bits (57eef65)
• ♻️ Minimize endstop bits (894c954)
• 👷 Add a test for SAVED_POSITIONS (3220c49)
• ♻️ Refactor, comment endstop/probe enums (4dae589)
• 🎨 Flags for homing directions (e.g., Z_HOME_TO_MIN) (49b05ba)
• 📝 Document diveToFile, printListing (ddc82b8)
• ♻️ Simplify TMC utilities for more axes (765720e)
• ♻️ Refactor axis counts and loops (26a2443)

Maintenance

• 🎨 Apply shorthand and cleanups (7597b4f)
• 🎨 pause => pause_heaters (7cd0f2a)
• 🎨 Shorten lcd relative paths (3995e83)
• 🎨 Move HAS_EXTRUDERS (87a9437)
• 🎨 Update a condition (8e28731)
• 🎨 Rename all/no axis enums (cdbd438)
• 🎨 MULTI_MANUAL => MULTI_E_MANUAL (c977e82)
• 🎨 Move switch sensor strings (2de914c)
• ✅ Fix tests for EXTRUDERS 0 (046bac6)
• 🎨 Misc cleanup and fixes (f7d28ce)
• 🎨 Use defined strings (c85633b)
• 📝 Add Configurations section to README (#21955)

Marlin 2.0.8.1

This release patches various issues discovered since the 2.0.8 release and also includes some useful enhancements.

New Features

• M154 S Position Auto-Report (#18427)
• Laser Cutter Air Assist (#21753)
• ExtUI event for PID tuning start (#21734)
• Echo LCD message to serial in kill
• UBL Mesh Wizard (#21556, #21791)
• Support a third serial port (#21784)
• Instant Freeze/Resume Function (#17462)

New Machines and Boards

• BigTreeTech SKR V2 Rev B (#21805)
• BigTreeTech Octopus (STM32F446ZET6) (#21826, #21882, #21883, #21901)

Optimized / Improved

• Debounce for Power-Loss pin
• Optimize G-code flag parameters (#21849)
• Move temp errors calling kill() out of ISR (#21832)

Configuration

• Allow disable of POWER_TIMEOUT (#21771)
• Allow Creality V4 SERVO0 and PROBE pin overrides (#21770)
• SOFT_RESET_VIA_SERIAL sanity-check
• Better error message for bad array sizes
• Fix G29_RETRY_AND_RECOVER dependency (#21907)
• 🔧 Improve SD_DETECT_STATE default (#21885)
• Update Advanced Pause description (#21829)
• Fix multi volume config typo (#21880)
• Make [XYZ]_ENABLE_PIN an optional pin (#21801)

LCD / Controller

• Capacitive Touch Screen (GT911) for SKR SE BX (#21843)
• Add MKS_LCD12864B
• Fix E3V2 Control Menu icon/text order (#21838)
• Fix MKS UI missing font select condition (#21905)
• Fix Nextion compile error (#21884)
• Active MMU slot indicator (#21842)
• TFT pins for BTT GTR V1
• TFT SPI for BTT SKR v1.3 (#21794)
• Update SKR 1.3 touch pins
• Update Robin Pro TFT Pins (#21879, #21900)

Build and Upload

• BigTreeTech SKR Mini E3 with HAL/STM32 (#21488)
• Only look for target disk during Upload (#21804)
• Update STM32 platform to 12.1
• Use adafruit/Adafruit NeoPixel@~1.8.0
• Update FLSUN_HISPEED env to flsun_hispeedv1 (#21510)

For Developers

• Move ExtUI subfolders up a level (#21820)
• Add and apply REPEAT_1 macro
• Apply SBI/CBI/TEST in HAL
• Additional utility macros
• Simplify macro expansion with recursion (#21859)
• Better opt_set comment of old val
• Simplify / undef extra endstops (#21808)

General Issues Fixed

• Fix "undefined abl_points" error
• Fix SDCARD_CONNECTION default for BTT SKR (#21755)
• Fix Singlenozzle Standby issues (#21759)
• Fix Power-Loss Save on Pause (#21749)
• Fix Z raise in filament load M701 (#21762)
• Add missing ExtUI method (#21763)
• Fix parser temperature rounding
• Fix bad call to 'diskIODriver' (#21775)
• Fix bad DELTA probe move (#21781)
• Fix flush_and_request_resend
• Prevent watchdog reset in setup() (#21776)
• Pause and PLR refinements
• Fix MMU2 compile with include (#21809)
• Update Chart.js to 2.9.4 for e4d@box UI
• 📝 Fix version reference
• 🐛 Fix excessive MMU2 timeout (#21855)
• G60-G61 Save E position (#21810)
• Patches for CASE_LIGHT_USE_RGB_LED (#21811)
• Let M421 C select any point
• Always prompt in M125 if host-prompt (as with Ext UI) (#21828)
• Lerdge K EEPROM and TFT (#21812)
• Consider SD print complete only when commands are done (#21840)
• 🐛 Fix Lerdge USB Flash Drive envs (#21847)
• Unify BTT Motor Expansion Options (#21823)
• Fix and improve Power-Loss Recovery (#21779, #21894)
• Fix L64xx init for Z4 axis
• 🐛 Fix G5 IJ with Motion Mode (#21858)
• Fix compilation failure in M1001 (#21897)
• 🐛 Fix Realtime Reporting with Motion Modes (#21902)

Marlin 2.0.8

New Features

• Tool sensors (#17239)
• Z Probe Offset Wizard (#18866, #19647, #19742, #20167, #20239, #20344, #20414, #20439)
• G34 Mechanical Gantry Calibration (like Prusa M915) (#18972)
• Swedish language for MarlinUI (#20826)
• Custom move feedrate for G26 (#20879)
• Chamber servo vent, auto fan (#19519, #21594)
• Support for Debug Codes - Dnnn (#19225, #19697)
• REPORT_TRAMMING_MM option (#19682)
• Power-on/off G-code options (#19837)
• SPINDLE_SERVO option (#19971)
• POWER_OFF_DELAY option (#19987)
• ASSISTED_TRAMMING_WAIT_POSITION (#20063)
• HOME_Z_FIRST option (#20113)
• SMUFF (MMU2 clone) support (#19912)
• Allow cold Filament Load/Unload with M302 P1 (#20262)
• Level Corners with Probe option (#20241)
• M808 Repeat Markers / "End Repeat Loops" menu item (#20084)
• Make M220 B / R parameters standard (#20355)
• Probe Tare, Probe Activation Switch (#20379, #20550)
• Laser Test Fire (#20452)
• NO_SD_DETECT option (#20741)
• “MeatPack” (OctoPrint plugin) serial encoding (#20802, #20893, #20896, #20903, #21306, #21336)
• STM32 Shared Media - USB Mass Storage Device (#20956)
• Postmortem Debugging to serial port (#20492)
• Chamber Heater PID (#21156)
• PROBING_HEATERS_OFF sub-option WAIT_FOR_HOTEND (#20835)
• Preheat Menu shortcut option (#20350)
• RGB Caselight (#20341)
• Filament Runout handling for Mixing Extruder (#20327)
• G-code Digital Buttons (#18389, #21284)
• Cooler (for Laser) - M143, M193 (#21255)
• Add M207/8/9 reporting (#21335)
• Custom menu items confirm option (#21338)
• TPARA - 3DOF robot arm IK (#21005, #21248)
• Hilbert space-filling curve for UBL / G26 (#21387, #21453, #21480)
• Extend M106/M107 for better laser module support (#16082)
• Laser Coolant Flow Meter / Safety Shutdown (#21431, #21498, #21573)
• Multi-Volume. Select Media for LVGL (#21344)
• Realtime Reporting, S000, P000, R000 (#19330, #21630)
• M10-M11 Air Evacuation for Spindle/Laser (#21668)
• Soft Reset via Serial or post-kill button click (#21652)
• Backlash Compensation for COREnn (#21612, #21731)
• Stepper Driver Anti-Reverse Protection (#21503)

New Machines and Boards

• Anet ET4 / ET4P and Anet TFT28 / TFT35 (#20280)
• BigTreeTech E3 RRF
• BigTreeTech SKR CR6 (#20522)
• BigTreeTech SKR Mini MZ V1 (#19818, #20069)
• BigTreeTech SKR V2.0 (#21503, #21717, #21741)
• BigTreeTech SKR-SE-BX (STM32H743IIT6 ARM Cortex M7) and BIQU_BX_TFT70 (#21536)
• Creality v4.2.10 board (#20647)
• Creality v4.3.1 (Ender 6) board (#20512)
• Creality v4.5.2 (#20378)
• Creality v4.5.3 (CR-6 SE, CR-6 MAX) (#20468)
• Eryone Thinker V2 (#21190)
• FLSUN Delta QQS-Pro (#19793)
• FLY CDY (#19979)
• FLY MINI (#19185)
• FYSETC Cheetah 2.0 (#20897)
• FYSETC E4 (#20032)
• FYSETC Spider (#21458)
• KRATOS32 / K.32 board and LCD controllers (#21334)
• Longer LK Pro / Alfawise PRO (#20185, #20372)
• MKS Robin E3 / E3D v1.1 (#20216)
• MPX_ARM_MINI board (Mingda MD-16) (#20711)
• NUCLEO-F767ZI dev board (#19373)
• Ramps-S v1.2 (#19815)
• SMART RAMPS 1.4 with Mega2560 (#21059, #21128)
• Zonestar Z8 XM2 (#19991)

Configuration Updates

• Ensure A4988 for unspecified driver type (#19798)
• Allow MAX31865 resistance values configuration (#19695)
• TFT Presets, Generic options, Sanity checks (#19723)
• Default LASER_POWER_INLINE to OFF (#19727)
• Distinct Chopper Timing settings (#19781, #19850)
• Longer3D: LONGER_LK_TFT28 now set by config (#19817)
• Configure TMC interpolation per driver (#19828)
• Guards for large BLOCK_BUFFER_SIZE (>=128) (#20130)
• Allow dummy thermistors without pin definitions (#20159, #20247)
• Add Thermistor 20-21 notes (#19246)
• Permit touch calibration override
• Optional M42/M226; Add more features filters (#19664)
• Option to prevent (extra) Watchdog init on STM32 (#19693)
• Sanity-check mutually-exclusive G34 features (#19706)
• Add HAS_MEDIA_SUBCALLS to enable/disable M32
• Option to ignore SD at startup (#20099)
• Option to open the File Browser on Media Insert (#20151)
• Use MANUAL_PROBE_START_Z for UBL manual probing (#20160)
• Proper pullup/pulldown configurability (#20242)
• No Z_MULTI_ENDSTOPS when HOMING_Z_WITH_PROBE (#20254)
• Group related homing options (#20283)
• Leveling Fade Height default setting (#20316)
• Clarify Delta & SCARA config location (#20403)
• Clarify "not Interrupt-capable" error message (#20419)
• Add Z_SENSORLESS sanity checks (#20421, #20438)
• SHORT_MANUAL_Z_MOVE is now FINE_MANUAL_MOVE
• Option to always enable leveling after G28
• Minimum temp options for Probing and G12 Nozzle Clean (#20383)
• Improve STM32 timer conflict messages (#20544)
• Add OPTIMIZED_MESH_STORAGE option (for UBL) (#20371)
• Validate defined probe points (#20572)
• Allow define of HOMING_FEEDRATE_(XY|Z)
• Apply SHOW_BOOTSCREEN to TFT_COLOR_UI (#20586)
• Clarify sanity-check for custom status bitmap (#20588)
• Adjustable precision in M105 temperature report (#20602, #20687)
• Multi-Z stepper inverting (#20678)
• Configurable Corner Leveling point order (#20733)
• USE_M73_REMAINING_TIME sanity-check (#20751)
• Configure / disable PRINTCOUNTER save interval (#20856)
• Configure / disable PRINTCOUNTER save interval (#20856)
• Touch Calibration Screen auto-save option (#20971)
• Allow Zero Endstops (e.g., for CNC) (#21120, #21188)
• Combine Z_AFTER_DEACTIVATE with UNKNOWN_Z_NO_RAISE (#20444)
• Renamed some "SPEED" options as "FEEDRATE" (#21217)
• Default microsteps to axis first stepper (#21230)
• Safe Z homing for Power Loss Recovery (#16909)
• Extend Heater Overshoot Options (#21273)
• Undef unused 2nd serial option(s) (#21331)
• Sanity-checks for NOZZLE_CLEAN_FEATURE (#21332)
• Main / Config Custom Submenus (#18177)
• Better chopper defaults
• More detailed serial config error
• Sanity check MIXING_EXTRUDER + DISTINCT_E_FACTORS (#21689)
• Make Cancel Objects reporting optional (#21698)

Optimized / Improved

• Fix various errors, warnings in example config builds (#19686)
• Add loose soft endstop state, apply to UBL fine-tune (#19681)
• If needed, home before G34 (#19713)
• Handle M410 in the main task (#19752)
• Fix Color UI external_control, wait_for_release (#19771)
• Fix HAL/STM32 FastIO for analog pins (#19735)
• Fix G35 PROGMEM strings (#19926)
• Handle UTF in long filenames (#20087, #20115, #20121, #20135)
• G34 Z stepper locking (#20091)
• Optimize M360
• Update IDEX menus, add post-M605 event G-code (#20133)
• Reduce RAM usage for TFT Color UI on SGen-L (#20179)
• Abort print on media removal (#20200)
• Skip unnecessary (costly) SW Stepper Enable (#20218)
• Allow Status Message without LCD (#20246)
• Optimize emergency parser check
• On pause release the extruder for easier filament change (#20346)
• Fix, improve Tramming Wizard behavior (#20437, #20796)
• MAX Thermocouples rework (#20447)
• Support RGBW on PCA9632 (#20455)
• Preheat before Power Loss Recovery homing (#20697)
• Support up to 6 Tramming points (#20720, #21646)
• Init KILL, SUICIDE, PSU earlier (#20810)
• Init serial ports first (#20944)
• Improve probe preheat behavior (#21033)
• Use 'H' value for UBL G29 z-clearance (#21114)
• Fix and improve G-code queue (#21122)
• Pause SD queue early on M25 (#21317)
• Add reporting to M207/8/9 (#21335)
• Optimize MarlinSettings with template methods (#21426)
• Optimize LSF for size, efficiency (#21443)
• Optimize BLTouch code for size (#21477)
• Generalize MMU (#21469)
• Move last bootscreen delay to end of setup (#21665)
• Use temp_info_t for temp_redundant (#21715)

Board / HAL Updates

• Retire HAL for STM32F4 / F7 (#20153)
• Improved MKS Robin support (#19333)
• Minor SPI fixes, systick_callback for STM32F1 HAL compatibility (#19565)
• Update MKS SGen-L V2 RGB LED pins (#19762)
• Teensy 4.1 Ethernet support (#19801, #21316)
• Ignore NativeEthernet on AT90USB1286 (#19885)
• AZTEEG X5 mini LED pins (#19909)
• Generalize BTT SKR E3-DIP version (#19910)
• Rename, adjust Dagoma F5 (#19947)
• FAST_PWM for STM32F1 (#19952)
• FAST_PWM for STM32 (#20025)
• Get STM32 clock rates from framework (#19978)
• HAL support for 8s watchdog
• Standardize Marlin SPI (#19989)
• STM32F1 cleanup, incl. SoftwareSerial removal (#20046)
• BTT SKR driver expansion board (#20088, #20123)
• Allow overriding servo pin for MKS Robin Mini (#20158)
• FLSun Hispeedv1 Board update (#19959)
• Migrate Hispeedv1 (QQS-Pro) to HAL/STM32 (#20354)
• Use RTD for MAX31865 reading (#20188)
• Add BTN_ENC_EN for many boards (#19796, #19890, #20684)
• SKR E3 Turbo Controller Fan (#20320)
• Permit SD EEPROM emulation on Ender-3 V2 (#20353)
• Suspend Servos for STM32+NeoPixel (#19963)
• SPI TFT for STM32F4 boards (#20384)
• MKS Robin Pins fixes for STM32 and STM32F1 (#20404)
• Add HAS_PIN_27_BOARD for CREALITY_V4 (#20446)
• MKS Robin Nano V3 and STM32F4x0Vx Variant (#20430, #21174, #21238)
• Let boards set Default TMC Slave Addresses (#20498)
• 12-bit ADC resolution for STM32 (#20519, #20562)
• Overrides to prevent STM32 timer conflicts (#20545)
• Unify FYSETC F6 1.3 / 1.4 (#20507)
• Better defaults, compatibility for SDIO + STM32 (#20570, #21440)
• USB Flash Drive via native USB Host + MSC (#20571)
• Prefix SD SPI pins (SCK, MISO, MOSI, SS) (#20606)
• Define SANGUINOLOLU 1.1 enable pins (#20682)
• Wanhao One+ SD Detect pin (#20724)
• ESP32 Tone Generator (#20704)
• NEOPIXEL overridable on BTT SKR (#20797)
• FYSETC_242 OLED 12864 for S6 (#20767)
• Lerdge K/S/X support for Flash Drive (#20593)
• Add labels, condition for BTT GTR M5 pins (#20772)
• Updated display timing for SKR Pro (#21346)
• ZONESTAR_LCD warning for RAMPS / ReARM (#20702)
• Refactor serial class with templates (#20783, #21249, #21287, #21318)
• Allow ...

Marlin 2.0.7.2

Issues Patched

• Define IS_ULTIPANEL properly for new configs
• Fix various errors, warnings in example config builds (#19686)
• Fix I2C_ADDRESS sign warning (#19685)
• Save PLR on resume from pause (#19676)

New Machines and Boards

• Add NUCLEO-F767ZI dev board (#19373)

New Features

• Add G34 Mechanical Gantry Calibration (like Prusa M915) (#18972)

Configuration

• Allow MAX31865 resistance values configuration (#19695)
• Add REPORT_TRAMMING_MM option (#19682)
• Sanity-check mutually-exclusive G34 features (#19706)

Board / HAL

• Fix HAL/STM32 FastIO for “A#” analog pins (#19735)
• Restore correct STM32 port-bits code (#19678)
• Fix SAMD Serial name macro (#19765)
• Option to prevent (extra) Watchdog init on STM32 (#19693)

LCD / Controller

• Improved TFT support (#19192, #19710)
• Prevent watchdog timeout in LVGL init (#19724)
• Fix UTF8 handling for Color UI (#19708)
• Fixes for TFTGLCD Panel, use FastIO (#19614)
• Implement wait_for_user for Color UI (#19694)
• Fix screen click reading too often (#19696)

Optimized / Improved

• If needed, home before G34 (#19713)
• Add loose soft endstop state, apply to UBL fine-tune (#19681, #19734)
• Digipots refactor / cleanup (#19690)

Build and Upload

• Fix mega2560ext environment (#19730)
• Fix motion compile w/out probe-oriented settings (#19684)
• Fix AT90USB1286 build (#19687)

For Developers

• Add D100 Watchdog Test (#19697)