Stepper Driver with PWM

Both A2 and A4 drivers have been upgraded to include PWM speed control. Previously only analoge (0 to 5V) speed control was available.

Features include:

- speed control (0 to 5V analogue or  0 to 100% PWM)
- 2 speed ranges (0 to 150 or 0 to 800 rpm)
- direction control
- enable / disable input
- mounting directly on rear of motor
- current limiter (to optimise motor temperature)
- A2 for max. 2 amp (suitable 9QQ, 9QX, and 15KS with nema 15 motor)
- A4 for max 4 amp (suitable for 15KS with nema 23, 25K, 30KS and 6K)