Motoron M3H256 Triple Motor Controller for Raspberry Pi (No Connectors or Standoffs)

The Motoron M3H256 is a triple motor controller for Raspberry Pi, providing independent bidirectional control of three brushed DC motors via I2C. With support for 4.5V to 48V and 2A continuous per channel, it's ideal for omni-wheel robots and multi-motor projects.

This bare-board version ships without connectors for custom installations. Features include reverse-voltage protection, configurable acceleration profiles, and command timeout for safety.

Key Features

• Triple Motor Channels – Independent control of 3 DC motors
• Wide Voltage Range – 4.5V to 48V motor supply
• 2A Continuous / 6.4A Peak – Per channel current capacity
• I2C Interface – Up to 400kHz communication
• Command Timeout – Motors stop if Pi communication fails
• Configurable Acceleration – Smooth motor ramping
• Reverse Voltage Protection – Protects down to -40V
• Voltage Monitoring – Read motor supply voltage
• Status LEDs – Visual feedback for motor direction

Specifications

• Motor Channels – 3 (independent, bidirectional)
• Motor Voltage – 4.5V to 48V
• Logic Voltage – 2.8V to 5.5V
• Continuous Current – 2A per channel
• Peak Current – 6.4A per channel (<1 second)
• Interface – I2C (400kHz)
• PWM Frequencies – 1kHz to 80kHz (8 options)

Compatibility

• Raspberry Pi Model B+ and later
• Raspberry Pi 3, 4, 5
• Raspberry Pi Zero (with GPIO header)

Ideal For

• Omni-wheel and holonomic drive robots
• Three-motor platforms
• Projects requiring 48V motor support
• Custom robotics builds

Package Contents

• 1× Motoron M3H256 controller board (assembled PCB only)

Resources

• Pololu Product Page – Documentation