I came here from https://www.everythinglasers.com/forums/
in search of someone that might tell me what the L (low signal?) on the PSU of the K40 laser is for.
I have repurposed my old k40 laser to be a drawing machine,
it works nicely, but I would like to not use the PSU it came with, and replace it with a 24V, 5V PSU. Is the L pin just a trigger to the PSU telling it to generate high voltage? Or does it trigger other things as well? I am tied into the L pin from the arduino, that uses pulses on that pin to actuate a servo motor.
(I think maybe I can disconnect it, or maybe tie it to gnd, basically, I’d like to make my machine smaller, and avoid the 20KV being generated at all) I havent sourced a replacement 24V,5V regulator yet.