If I plumb the output pwm signal back through the 5V input to the pot, will I be able to manually control the power through the pot, up to the maximum output of the pwm?
Originally the K40 power pot alters a 5V line to control the output of the LPSU. If I take the 5V feed off, and replace it with the output from the Smoothie’s PWM pin, that should give the same effect, but while staying within the bounds of whatever PWM is outputting? Leaving the pot wired as it was originally, allows the pot to override whatever the smoothieboard is outputting - which makes the safety offered by going digital, moot.
I will need to level-shift the 3.3V PWM pin to 5V.