RiceCNC is a hardware/software system for controlling Computer Numeric Control (CNC) milling machines using stepper motors for axes positioning. It supports motor controller interfaces such as step/direction, discrete, quadrature, and ST Microelectronics "dSpin" SPI. The firmware can interpolate linear and multi-dimensional cubic Bezier curves for up to nine axes. Additionally, it has spindle speed control.
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A free program for Mac, by Pocket Bits LLC.
