MultiFunctional PWM Speed Adjusting Motor Driver Expansion Board DIY Module Features: It can drive 4 channels DC motors or 2 channels stepping motors while driving 2 servos. More functions, easy operation, with powerful driver library support and function updates. With for reset button, up to 4 bidirectional DC motors and 4 channels PWM speed adjustment(approximately 0.5% resolution). Up to 2 stepper motors with positive and negative control, single/double step control, interleaved or microstep and rotary angle control. 4-way H-bridge with L293D chip, each channel bridge provides 0.6A (peak 1.2A) current with thermal shutdown protection, 4.5V to 36V. Pull-down resistors ensure that the motor remains stopped at power-up and is compatible for Diecimila, for Duemilanove. A full set of spare parts is available for DIY fans who want to do it themselves. Specification: Material: PCB Color: As is shown on the photo Quantity: 1 Condition: Package List: 1 x Module