Spindle does not stop on finish

[9a4gl]

Using CNC2418 with GRBL 0.9 and Candle 1.0.11

After everything is finished spindle keeps spinning. With original pcb-gcode pcb-gcode-3.6.2.4 spindle stooped after everything has finished.

[McNugget6750]

You're right. I believe my spindle turns off on command M4 and most spindles turn off on command M5. This has been an issue with other software for me as well and I keep changing it. Let me try and point you to the right location in the python script.

[McNugget6750]

I believe you are using my config file. Therefore you need to go to profiles/grbl-NuggetMill.pp and check line 60:
string SPINDLE_OFF = "M4" + EOL;
needs to be changed to

string SPINDLE_OFF = "M5" + EOL;
for most CNC machines. Try that and let me know if that helps!

[9a4gl]

I just found this

M03 | M-Code | Spindle ON (CW Rotation)
 M04 | M-Code | Spindle ON (CCW Rotation)
 M05 | M-Code | Spindle Stop

Fast switching rotation with M04 may cause also damage.

[McNugget6750]

Certainly. I have my own CNC machine design and for reasons I don't remember the relay output only turns on or off on M3 and M4 respectively.
I should change that at some point as it's not standard.

[9a4gl]

I can confirm that changing to M5 fixes the problem. IMO, if this really can be different on some machines it should go to settings and default should me M5