Issues

• Possible typo in LED1_PWM_PORT definition

  grblHAL/STM32F4xx#310 · Filter by author calabr opened on Oct 22, 2026
  1

• Spindle at speed not stable

  grblHAL/STM32F4xx#309 · Filter by author calabr opened on Oct 21, 2026
  3

• BTT Scylla Connection issues in grblHAL with Gsender and Mac.

  grblHAL/STM32F4xx#303 · Filter by author deangelo171 opened on Aug 17, 2026
  7

• [Flexi-HAL / STM32F446] HardFault / Crash on M104 P0 spindle swap with N_SPINDLE=12

  grblHAL/STM32F4xx#301 · Filter by author ranjanncc opened on Jul 24, 2026
  3

• STM32F401 + BlackPill board compiles successfully but USB CDC is not detected (Driver v260410)

  grblHAL/STM32F4xx#299 · Filter by author Althafzahra opened on Jul 12, 2026
  5

• mks_robin_nano_v3.1 failed to operate the SD card via $FM, $F

  grblHAL/STM32F4xx#295 · Filter by author chenglianshu opened on May 28, 2026
  13

• Regarding the issue of idle states for direction and step pulses

  grblHAL/STM32F4xx#288 · Filter by author kokoandqiong opened on Apr 9, 2026
  1

• I'm a GrblHAL beginner. I've always used Keil to develop STM32, so this is my first time using PlatformIO. I've been trying to compile for a few days but haven't been able to. I'm using an STM32F407ZET6. Is there a problem with my configuration?

  grblHAL/STM32F4xx#284 · Filter by author haishi14 opened on Feb 10, 2026
  1

• platformio error "no such file or directory" grbl/driver_opts.h but the grbl directory is empty

  grblHAL/STM32F4xx#282 · Filter by author lappa1 opened on Feb 7, 2026
  10

• Can the underlying code be compatible with CANOPEN to control the movement of the motor?

  grblHAL/STM32F4xx#275 · Filter by author kokoandqiong opened on Jan 17, 2026
  5

• Sienci Longboard Fails to buidl

  grblHAL/STM32F4xx#268 · Filter by author patrickjr89 opened on Dec 6, 2025
  1

• How to disable zaxis??

  grblHAL/STM32F4xx#267 · Filter by author artayasa opened on Nov 20, 2025
  8

• Moving output from Y to E01 due to burned pins on controller SKR PRO 1.2

  grblHAL/STM32F4xx#265 · Filter by author zurdoid123 opened on Nov 5, 2025
  1

• BTT OCTOPUS PRO BUILD

  grblHAL/STM32F4xx#259 · Filter by author yoroboticscolombia opened on Oct 9, 2025
  18

• MKS Robin Nano and MPG

  grblHAL/STM32F4xx#258 · Filter by author bullestock opened on Sep 21, 2025
  1

• enabling Tapping feature in 3 axis milling machine.

  grblHAL/STM32F4xx#255 · Filter by author Bharathk-Gowda opened on Sep 5, 2025
  3

• Looking to make a driver from already available driver list

  grblHAL/STM32F4xx#252 · Filter by author elekgal-bit opened on Aug 30, 2025
  8

• USB COM Port Not Persisting on Rumba32 – Possible Bootloader Issue

  grblHAL/STM32F4xx#250 · Filter by author samerjawadi opened on Aug 28, 2025
  2

• Problem with spindle synchronous encoder

  grblHAL/STM32F4xx#226 · Filter by author auxp opened on Apr 12, 2025
  1

• Encountered an error while compiling firmware for f446re_flexi_cnc using PlatformIO.

  grblHAL/STM32F4xx#221 · Filter by author CHTUZKI opened on Mar 8, 2025
  2

• X-Axis Drifting After Updating to grblHal Core 20250223

  grblHAL/STM32F4xx#220 · Filter by author WhatsUGonnaDo opened on Mar 4, 2025
  26

• Watchdog?

  grblHAL/STM32F4xx#216 · Filter by author mr-huang-mou opened on Feb 14, 2025
  1

• mks_robin_nano_v3.0 board map wrong AUXINPUT0_PORT selected

  grblHAL/STM32F4xx#213 · Filter by author calabr opened on Jan 23, 2025
  16

• Grblhal for Arduino Uno R4 minima 32 bit

  grblHAL/STM32F4xx#212 · Filter by author FusionHolic opened on Jan 14, 2025
  1

• Where is the Flexi-Hal Board?

  grblHAL/STM32F4xx#201 · Filter by author nostifaru opened on Nov 20, 2024
  1