Wiring K40 with Monport Board - PWM?

[toofii (Jan Neider)]

Hello, I bought a K40 with a monport board yesterday. It works well with manual laser power adjustment directly on the K40.
Now, of course, I would like to be able to adjust the power in Lightburn. However, my power supply looks different than the one in the monport description. Can you help me with how to wire it all up?
I’m attaching a picture of what my power supply looks like.

[jkwilborn (Jack Wilborn)]

This isn’t the monport upgrade type board I’m used to seeing. I haven’t seen any of them that don’t remove the console controls.

This thread might help, but from the drawings, I don’t know what the little board is doing or how it interfaces to the Monport grbl board.

K40 - Monport V2 for Lightburn - Power Settings

Let me try to explain how the monport board is controlling the lps with this configuration. Starting at the left of the center connector. The P input is a water protection input that is usually wired to a pressure switch indicating you have coolant flowing. Sounds like this was wired through your laser power switch. To enable the laser to fire this needs to be pulled low or to ground. The jumper to ground makes it active at all times. The L input is the laser enable. When this goes activ…

Let us know when you find out some specifics… Links to this stuff is usually very beneficial to those attempting to assist.

You lps should be able to be plug compatible. It’s just like the one in the link I posted.