Issues

• Modbus Silent State Causing Controller Lockup on Reset

  grblHAL/core#1031 · Filter by author engigeer opened on Sep 30, 2026
  3

• mc_arc(): G93 (inverse time) arcs run at F × segments mm/min - their time depends on the radius and $12, not on F

  grblHAL/core#1030 · Filter by author yiivon opened on Sep 30, 2026
  1

• Error checking changes state: a refused G93/G94/G95 block zeroes gc_state.feed_rate

  grblHAL/core#1027 · Filter by author yiivon opened on Sep 27, 2026

• nvs_buffer.c: uint_fast8_t offset truncates the NVS address of coordinate data, startup lines and tools (8-bit uint_fast8_t hosts, e.g. the Simulator)

  grblHAL/core#1026 · Filter by author yiivon opened on Sep 27, 2026

• Feed hold in the last ~100 ms of the last planned block: resume does nothing, the remaining motion runs together with the next block

  grblHAL/core#1024 · Filter by author yiivon opened on Sep 26, 2026

• Feed hold: resumed block re-initialises its Bresenham counters, a minor axis can lose one step

  grblHAL/core#1023 · Filter by author yiivon opened on Sep 26, 2026

• Request to Add Setting for Persisent G5X Selection on Program Completion

  grblHAL/core#1021 · Filter by author engigeer opened on Sep 26, 2026

• Floating point for incremental steps (title changed)

  grblHAL/core#1015 · Filter by author paukstelis opened on Sep 12, 2026
  1

• Modbus Read Discrete Inputs Function

  grblHAL/core#1011 · Filter by author EmpyreanCNC opened on Sep 5, 2026
  1

• This is not a bug report or an issue report.

  grblHAL/core#1010 · Filter by author XGCHUN opened on Sep 5, 2026
  2

• plasma/THC error 422

  grblHAL/core#1009 · Filter by author burrow87 opened on Sep 1, 2026
  1

• Changing $10x steps/mm at a non-zero position corrupts the parser position — next move travels the wrong distance

  grblHAL/core#1006 · Filter by author holla2040 opened on Aug 22, 2026

• M4 (dynamic/rate-adjusted) laser power not zeroed on G0 block immediately following a rate-adjusted G1 block

  grblHAL/core#1002 · Filter by author Alijambo opened on Aug 13, 2026
  1

• S01000$1 M03$1 These commands trigger error prompts.

  grblHAL/core#1001 · Filter by author spxwh opened on Aug 11, 2026
  4

• Which software version is used to compile iosender?

  grblHAL/core#998 · Filter by author spxwh opened on Jul 30, 2026
  2

• Position drifts by one backlash compensation offset after stop mid-program

  grblHAL/core#992 · Filter by author rcp1 opened on Jul 22, 2026
  3

• Feature Request - Custom step servo spindle

  grblHAL/core#978 · Filter by author XYartlab opened on Jul 2, 2026
  3

• Fanee2026

  grblHAL/core#970 · Filter by author stefanpopa27021983-tech opened on Jun 20, 2026
  1

• Request - Axislabeling, Homing, infinite rotational C, AC-Kinematics, switching between mcs and g54

  grblHAL/core#965 · Filter by author NicoDetzler opened on Jun 16, 2026
  32

• Provide Normally Open Input Option on Signal Control in Web Builder

  grblHAL/core#961 · Filter by author adepacarmerah opened on May 27, 2026

• Rejects valid G-Code for simple circle

  grblHAL/core#958 · Filter by author fireup924 opened on May 21, 2026
  3

• How to configure LAN8720 RMII Ethernet on STM32F407VET6?

  grblHAL/core#957 · Filter by author c0ncua109 opened on May 20, 2026
  4

• modbus_send_rtu while(spin_lock); causing infinite loop.

  grblHAL/core#932 · Filter by author andrewmarles opened on Apr 1, 2026
  1

• possible pendant/communication issue after a5ecb4c commit changes ....

  grblHAL/core#927 · Filter by author gyordanov opened on Mar 26, 2026
  16

• TCP socket control and G-code streaming in grblHAL

  grblHAL/core#925 · Filter by author nsiatras opened on Mar 23, 2026
  2