Machine: k40 with digital display
Board: laserboard c3d
first I want to add safety switch to cut the laser and the work in case of unscheduled opening of the working area. how to connect it to the laser board, what to change in the smoothie conf file?
second, I want to get rid of the digital display, how to connect a multi-pot and the firing switch?
third, I found on the net that le digital display tune the laser power with a PWM signal. I’m a bit concerned that the mix of 2 different PWM control signal may give strange result (interference course from the physic class )