Product Description
This add-on board enables a Raspberry Pi B+, A+, Pi 2, or Pi 3 to drive a pair of brushed DC motors. Its dual MC33926 motor drivers operate from 5 V to 28 V and can deliver a continuous 3 A (5 A peak) per motor. The default pin mappings make it easy to get started using our provided software, but the board also exposes most of the driver chips’ I/O pins for more specialized applications. This version ships fully assembled with connectors soldered in.
- Wide operating voltage range: 5 V to 28 V
- Output current: 3 A continuous (5 A peak) per motor
- PWM operation up to 20 kHz, which is ultrasonic and allows for quieter motor operation
- Motor indicator LEDs show what the outputs are doing even when no motor is connected
- Board can optionally power the Raspberry Pi base directly through added regulator (not included)
- Python library makes it easy to get started using this board as a motor driver expansion board
- GPIO pin mappings can be customized if the default mappings are not convenient
- Remaining motor driver pins are exposed for advanced use
- Reverse-voltage protection on motor supply
- Robust drivers:
- Transient operation (< 500 ms) up to 40 V
- Internal peak-current limiting gracefully reduces the output power if the current or temperature get too high
- Under-voltage shutdown
- Output short-to-ground and short-to-Vcc protection
- Prototyping space for easier/cleaner construction of custom circuits
This version of the motor driver is fully assembled, with a 2×20-pin 0.1″ female header (for connecting to the Raspberry Pi’s 40-pin GPIO header) and a six-pin strip of 5 mm terminal blocks (for motor and power connections) soldered in. (See item PO2755 for a kit version with connectors included but not soldered in.)
Dimensions
- Size: 65 mm × 56 mm
- Weight: 28 g
General specifications
- Motor driver: MC33926
- Motor channels: 2
- Minimum operating voltage: 5 V. Operation from 5 V to 8 V reduces maximum current output.
- Maximum operating voltage: 28 V. The device is protected for transients up to 40 V.
- Continuous output current per channel: 3 A
- Peak output current per channel: 5 A
- Maximum PWM frequency: 20 kHz
- Reverse voltage protection?: Y
- Partial kit?: N
