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  • SjCNC
  • SjCNC
07 Jul 2025 01:36
Replied by SjCNC on topic Please help with adding laser control

Please help with adding laser control

Category: Plasma & Laser

Thanks for checking things over PCW!

I can't setp the value since it's linked to a signal, but when gcode runs M67 E0 Q0, GPIO 017 does go false.

'setp hm2_7i76e.0.pwmgen.00.scale 100' has been added, this may yield better results. Since I didn't set the scale, all values (1-100) were sending full power. This tip right here may be the biggest sanity check, thanks PCW!
  • PCW
  • PCW's Avatar
07 Jul 2025 00:57
Replied by PCW on topic Please help with adding laser control

Please help with adding laser control

Category: Plasma & Laser

The connections look OK

If you set the PWM value to 0, does GPI0 017 go false?

I don't see that the PWM scale was set so anything >= 1 will be full scale
(default PWM scaling is 1.00 = full scale)

If the PWM values are in percent, you probably wantsetp hm2_7i76e.0.pwmgen.00.scale 100

in the hal file



 
  • SjCNC
  • SjCNC
06 Jul 2025 23:54
Replied by SjCNC on topic Please help with adding laser control

Please help with adding laser control

Category: Plasma & Laser

I've got to get better at asking the right questions... Using the old config:

signal 'sj'
motion.analog-out-00, and
hm2_7i76e.0.pwmgen.00.value

All these values update as M67 changes the output.

hm2_7i76e.0.gpio.017.in toggles to True when the gcode starts running.

Does everything seem mapped right for the PWM to reach pin 1 on a 5 axis breakout board? Should that be on hm2_7i76e.0.gpio.017.in? Maybe the code is fine, and I should be chasing down a hardware issue?
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