Pololu Motoron M2U550 Dual Serial Motor Controller

The Pololu Motoron M2U550 Dual I²C Motor Controller offers a compact solution for controlling two DC motors using a UART interface.

Multiple Motoron controllers can be connected to the same serial bus, making it easy to expand a system with additional motors. The M2U550 supports motor supply voltages from 1.8 V to 22 V and can deliver continuous output currents up to 1.6 A per motor. This version ships with soldered headers.

Available with or without pre-soldered headers - select the required version before adding to your cart. The unsoldered version comes with a loose 16x1 header strip.

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The Motoron M2T550 and M2U550 controllers make it easy to control two bidirectional, brushed DC motors using an I²C or TTL serial (UART) interface, respectively. These compact (0.6″ × 0.8″) boards support motor supply voltages from 1.8 V to 22 V and can deliver continuous output currents up to 1.6 A per motor. Multiple Motoron controllers can be configured to work on a single I²C or serial bus, allowing independent control of many motors. Unlike most of our motor drivers, the Motoron does not require any PWM outputs or timers on your microcontroller. Instead, only a single I²C or UART interface is needed regardless of how many Motorons you connect.

These Motoron controllers are available in several versions with different combinations of communication interfaces and connector options:

• M2T550 (I²C):
  • headers soldered
  • headers included but not soldered in
• M2U550 (TTL serial) (this item):
  • headers soldered
  • headers included but not soldered in

For smaller single-channel alternatives, consider the Motoron M1T550 and M1U550.

Connection Example

Features

• Two motor control channels allow for independent control of up to two bidirectional brushed DC motors per Motoron
• Wide motor supply voltage range: 1.8 V to 22 V (absolute maximum)
• Maximum output current per motor: 1.6 A continuous, 5 A peak for <1 second
• Reverse-voltage protection on motor power supply (down to −20 V)
• Logic voltage range: 3.0 V to 4.9 V (5V nominal not recommended)
• Control interface: M2U550: non-inverted TTL serial (up to 250 kbps)
• Optional cyclic redundancy checking (CRC)
• Configurable motion parameters:
  • Max acceleration/deceleration forward/reverse
  • Starting speed forward/reverse
  • Direction change delay forward/reverse
• PWM frequency: eight options available from 1 kHz to 80 kHz
• Command timeout feature stops motors if the Motoron stops receiving commands
• Configurable automatic error response
• Motor power supply (VIN) voltage measurement
• Two status LEDs
• Motor direction indicator LEDs
• Error output for easier detection of error conditions
• Motoron Arduino library simplifies using the Motoron with an Arduino or compatible controller
• Motoron Python library simplifies using the Motoron with Python or MicroPython
• Comprehensive user’s guide
• Compact 0.6″ × 0.8″ size

Specifications

Channels	2
Model	Motoron M2U550
Control interface	non-inverted TTL serial (UART)
Minimum operating voltage	1.8 V
Maximum operating voltage	22 V
Continuous output current per channel	1.6A
Peak output current per channel	5A
Minimum logic voltage	3.0 V
Maximum logic voltage	4.9 V
Reverse voltage protection?	Y
Size	0.6″ × 0.8″
Weight	2.5g

Resources

• User Guide
• Arduino Library
• Python/MicroPython library
• Dimensions
• 3D Model
• Drill Guide

Package Contents

• 1x Motoron M2U550 Dual Serial Motor Controller (with/without pre-soldered headers - select an option before adding to your cart)
• 1x 16-pin header (included with unsoldered version only)