Machine: Originally a K40 “No Ribbon and White JST Connector Power Supply” with C3D Mini
Problem/ Question: Due to clumsiness, I need to upgrade my K40 from a C3D Mini to a Laserboard. I bought the machine and the controller secondhand, and the original owner had completely removed the original control panel, and installed a custom one when he installed the Mini. The laser PWM wiring was plugged directly from the PSU to the C3D Mini. I’m at the tail end of the process of upgrading the entire system to a larger chassis, and managed to rip the microSD socket off of the Mini by dropping the back case panel while test fitting it. I was able to get it to work again briefly by resoldering the socket, but ultimately it failed. I purchased a Laserboard as a replacement, and 99% of it was drop-in.
However, I’m left with the 3-conductor PWM plug. What should I do with it? Is this what the ‘Alternate PWM Out’ pins are for? I understand this was originally connected to either a potentiometer or a digital panel- would I need to locate a compatible pot? I’ve seen several different ratings (anywhere from 1k to 10k) as the ‘recommended replacements’, but I’m not sure which would actually be correct.