/diy/ - Do It Yourself

>>2602794
>>2602803
Ok turns out there's a pin specifically on this laser driver for connecting to a dimming method. It can do both PWM dimming and analogue dimming, and all it needs for the latter is a 0.5-2.5V analogue voltage. Analogue dimming seems like a nice way of getting smooth brightness settings without worrying about jittering, while PWM dimming is probably best for a pilot laser since I'll be able to set the duty-cycle to pretty low levels with an MCU. Though to be honest it probably smooths out that PWM for constant current driving anyhow.

So the plan will be to have a constant 24V going to the laser from the printer main board, then 5V coming from the board too into an external MCU board to output some PWM and maybe analogue values too. I'll see if there's an extra pin to automatically run the pilot light with a pause in the g-code, though honestly just doing that with a button on the MCU might be more convenient anyhow.