Hey folks, I've been working on upgrading my earlier version of motion controller and the motionPro 6600 is the result of that. I have to thank all the folks here and a few other communities for the valuable feedback you gave. I have to tried to incorporate as many features as possible in this one. The crowdfunding campaign for the controller is live on Crowd Supply. I'd really love it if you can help me bring it to life! Here is a quick feature list: Supports upto 4-axes machines Works with LinuxCNC, Mach 3/4 and pretty much any software that can output STEP and DIR signals Integrated onboard four 4A Toshiba stepper drivers capable of driving up to four NEMA 17/23/34 motors Independently configurable current limits, stepper resolutions (up to 16 micro-steps) and torque settings for all four axes Wide input power range: 9V to 36V with reverse power connect protection Multiple control logic inputs: Parallel/printer port, USB and an IDC header Has onboard grbl firmware as well Includes a custom jogger and an optional 4A laser driver Noise filtered endstop, probe and emergency stop connects Big beefy heatsink for excellent thermal management