Welcome to the Router Forums. The upgrade control board will allow you to use Mach3 to control your little CNC. There is plenty of documentation for Mach3 and a lot of people using it for their machines. In my opinion that is a good choice to get away from the GBRL control.
A forum community dedicated to router and woodworking professionals and enthusiasts. Come join the discussion about different types of routing and routers, shop safety, finishing, woodworking related topics, styles, tools, scales, reviews, accessories, classifieds, and more!