Buddy of mine has a new drop controller, you may have one of his drop in replacements, the Gerbil. Now he has the super gerbil, kick starter is going on now. Great board, here is a video of a mill conversion he did, but it works with lasers as well (X,Y,Z and Rotary capable)
Kickstarter is at https://www.kickstarter.com/projects/2118335444/automate-anything-with-super-gerbil-cnc-gcode-cont?ref=discovery&term=super%20gerbil