Hey folks! I'm an electronics engineer and I've been tinkering with CNCs for about 2 years now. I recently developed my own electronics for it. Its an integrated 4-axes controller with four 4A Toshiba drivers. It has multiple logic control inputs. There is an onboard grbl controller and the controller also works with LinuxCNC and Mach3/4 softwares. It has all the physical interfaces necessary as well. If this is something that might of interest to you, I'm crowdfunding the controller on Crowd Supply right now. Let me know if you have any questions or comments.