This video shows my Brushed DC Servo drive running a motion program from Mach3 CNC software. The drive is based on the MBED 32bit ARM CPU and a generic H-bridge. The final drive will take analog, step/dir, serial commands and output PWM to Hbridge or Analog to external power stage. The drive reads quadrature encoders. The PWM update is 20Khz and the PID loop is 2Khz.
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