Please, Please help! I have been working on this for MONTHS and cannot get any further. I have watched hours and hours of YouTube videos, searched hundreds of Google pages with multiple "key words", and browsed dozens and dozens of websites, build logs, and Instructables. I just cannot get it. I bought the 2.5W Eleksmaker diode Laser kit and have been using it successfully. Now I am trying to control my 40W CO2 Laser Power Supply (LPS) from my Mana SE board (see images). I have used the test button on the LPS and it definitely fires the Laser Tube, so the LPS and the tube are fine. The Mana SE board is controlling the NEMA motors just fine. Here is where I'm an idiot. I can't get the Mana SE board to trigger the LPS to send the signal to the tube. I am a Design Engineer by trade and do not understand the electronics involved. I have tried very, very hard to figure this out, but after many long nights and weekends, I am finally breaking down and asking for someone to please be a good Samaritan and help me out. Please talk to me like I am a 7 year old, because I have tried many things and am at a loss. I don't know what PWM's, PDQ's, TTL's or ***'s are (actually, I do, but I just thought I add a little humor there), so please "spell it out" for me. Don't tell me to look at such and such a site, because I have, and I either have tried it or I don't understand it. If there is a part I need to buy, please send me a hyperlink or two, not just "oh, you need an inverter". I realize this is asking a lot, but I have so many things I have done on CAD and converted to GCode (with my own custom program that I wrote, I might add ;-) ), that I just want to get this thing running. The reason I am doing this is because I want to expand the size of the Eleksmaker machine to do some larger projects. And purchasing a machine this size will cost thousands of dollars more, plus the satisfaction of doing it myself... with a bit of help... OK, a LOT of help! If someone could show me how to connect the Mana SE board to the LPS, like a 7 year old, I will be very grateful and send you lots of M&Ms!! LOL Maybe you could download (or find) these pictures and show me how to connect them? Thank you so much in advance. You help will be GREATLY appreciated!