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I’ve looked at the turnkey tyranny software and it wouldn’t be of much use to anyone that’s using a diode laser. Lots of extra , unnecessary laser-related code bloat there. For us diode laser users, all we need is a simple pwm output through the m106/m107 gcode. That’s all the firmware should be responsible for. The laser software takes care of the rest.
I did personally modify my Marlin firmware for 11bit pwm resolution instead of the 8 bit used by vanilla Marlin code and also created m03 and m05 gcode to drive the laser instead of the fan commands but these were minor changes. I’ve looked at turnkey tyranny and it’s hard to figure out what’s even going on in there.