Pololu Motoron M1U550 Single Serial Motor Controller

The Pololu Motoron M1U550 Single IC Motor Controller offers a compact solution for controlling one DC motor using a UART serial interface.

Multiple Motoron controllers can be connected to the same serial bus, making it easy to expand a system with additional motors. The M1U550 supports motor supply voltages from 1.8V to 22V and can deliver continuous output currents up to 1.8A.

Available with or without pre-soldered headers – select the required version before adding to your cart. The unsoldered version comes with a loose 12×1 header strip.

The Motoron M1T550 and M1U550 controllers make it easy to control a single bidirectional, brushed DC motor using an IC or TTL serial (UART) interface, respectively. These compact (0.6 0.6) boards support motor supply voltages from 1.8 V to 22 V and can deliver continuous output currents up to 1.8 A. Multiple Motoron controllers can be configured to work on a single IC 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 IC 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:

• M1T550 (IC):
  • headers soldered
  • headers included but not soldered in
• M1U550 (TTL serial) (this item):
  • headers soldered
  • headers included but not soldered in

For dual-channel alternatives, consider the Motoron M2T550 and M2U550.

Connection Example

Features

• One motor control channel allows for control of one bidirectional brushed DC motor per Motoron
• Wide motor supply voltage range: 1.8 V to 22 V (absolute maximum)
• Maximum output current per motor: 1.8 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: M1U550: 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 the motor 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 users guide
• Compact 0.6 0.6 size

Specifications

Resources

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

Package Contents

• 1x Motoron M1U550 Single Serial Motor Controller (with/without pre-soldered headers – select an option before adding to your cart)
• 1x 12-pin header (included with unsoldered version only)