Hello.... I'm a little out of my element here, so excuse my lack of knowledge. I bought a cheap Chinese laser engraver from a guy off Craigslist (I know... First mistake). Could never get it to connect to LaserGRBL, so I bought a Sainsmart 3 axis controller board. I can connect to it now, and LaserGRBL will run a program, but the laser does not fire. I'm pretty sure I have something misconfigured. I have attached a couple of pics of the board... Not sure what needs to be plugged in where, or if I have a jumper set incorrectly (jumpers are set for laser, not cnc, and 5v). If I have the laser plugged into the fan port, the laser turns on and stays on. Once I plug in the other connector, it turns off. Hopefully it is a simple fix and someone can help out a new. Thanks!