For those wanting to convert to smoothie please find the following wise words of @Arthur_Wolf back in Oct 22 2015 on http://smoothieware.org forum:
“I really really assure you that keeping TTL on and using PWM to both regulate power and turn the laser off works fine, and is what at least a hundred users are doing.”
“Smoothie lowers laser power ( via PWM ) while accelerating and decelerating so that power-per-distance is constant, so you need to be controlling the laser with pwm. TTL should be used only as a secondary feature.”
And like … I was correct right ? I didn’t mess up or anything ? Haven’t touched a laser in a long time.
Until my laser explodes you will be correct.
Well if I don’t hear from you i’ll know what happened
FYI, I found that you can also use PWM to control the TL line instead of the IN line; which was more convenient for me since I wanted to keep the potentiometer connected to the IN line for backwards compatibility with the old control board and also allow interactive tweaking of the power level while cutting. I just had to adjust the PWM period in the config file to get a smooth grayscale ramp.
@Ariel_Yahni_UniKpty can you help me figure out where I need to connect the 2.4 pwm pin to the power supply we have