New USB CNC controller board

[jeffmorris]

I have Probotix PBX-RF RF Isolated CNC Breakout Board, Wrap9 USB SmoothStepper board, and Mach3 software. I'm having weird problems with my CNC router and I think that the boards may be going bad. I want to replace the boards with one USB CNC controller board. Any suggestions for new USB CNC controller board?

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[jeffmorris]

I have three MondoStep 7.8 Bi-Polar Stepper Motor Drivers and Nema 34 round stepper motors with six wires coming out of them. How can I increase the torque of the motors?