Duet 3 Toolboard / Laser Engraver?

oozeBot

Before we go too far with this idea - like, say, actually buying a laser - can a laser be hooked up to and controlled by a Toolboard? I don't see anything blocking this in the documentation, but I also don't see anything stating we can either.. Thanks!

Curious, is that for a multi-purpose machine, or to save one pair of wires?

oozeBot

@bearer the idea is to expand our Duet 3 powered machine as it already has a quick swap toolhead. If it was purpose built, I think we'd just go for a Duet 2..

dc42

@oozeBot said in Duet 3 Toolboard / Laser Engraver?:

Before we go too far with this idea - like, say, actually buying a laser - can a laser be hooked up to and controlled by a Toolboard? I don't see anything blocking this in the documentation, but I also don't see anything stating we can either.. Thanks!

We've not tried it, neither has anyone else AFAIK, but it should be possible. You could use the IO_0_OUT pin to provide the laser PWM signal. Assuming the laser input signal is active high, add a pulldown resistor to make sure the laser is off during startup.

oozeBot

@dc42 thanks! Down the rabbit hole we go..

widjit

I've been looking to do the same, found this on the Endurance Laser website.

How to Connect to Duet3D Wifi Board
The PWM input of the laser is connected to the Fan0 output of the Duet board.
Power control teams
M106 S127 – 50% power
M106 S255 – 100% power
M106 S0 – Laser Off

https://endurancelasers.com/wiring-endurance-lasers-to-top-popular-boards-cnc/

I don't see why it won't work.