SD25 is an easy-to-use professional stepper motor driver, which can control a two-phase stepping motor. It’s compatible with any CNC breakout board or any micro-based control board such as Arduino boards.

   Features :

•  Single input power (15–36VDC).
•  2.5 Amp/phase maximum output motor driving current.
•  4 Selectable work current (0.5A, 1.3A, 1.9A, 2.5A).
•  Auto idle current reduction (20%).
•  Step, direction, and enable input signals are TTL
  compatible.
•  Steps/Revolution 200, 400, 1600, 3200.
•  Test mode operation.
•  All controlling input signals are opto-isolated for safety.
•  High-speed opto-coupler isolator on step and direction.
•  Over temperature and over current protection.
• Two input LED indicators, green for power and red for fault.
•  Large area heat sink.
•  Dimensions: 95 X 57 X 36 mm.