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Motoron M1U550 Single Serial Motor Controller (Header Pins Soldered)

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Motoron M1U550 Single Serial Motor Controller (Header Pins Soldered)

SKU: POLOLU-5076 Brand: Pololu

The Motoron M1U550 Single I²C Motor Controller offers a compact solution for controlling one DC motor using a UART serial interface. Multiple Motoron...

$23.75 AUD, inc GST

$21.59 AUD, exc GST

Available with a lead time
Expect dispatch between Nov 25 and Nov 28

Quantity Discounts:

10-25 $20.73 (exc GST)
25+ $20.08 (exc GST)

The Motoron M1T550 and M1U550 controllers make it easy to control a single bidirectional, brushed DC motor using an I²C or TTL serial (UART) interface, respectively. These compact (0.6" × 0.6") boards operate 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 I²C or serial bus, allowing independent control of many motors. Unlike most of Pololu's 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:

M1T550 (I²C):
- headers soldered
- headers included but not soldered in
M1U550 (TTL serial):
- headers soldered
- headers included but not soldered in

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

Details for item #5076

Typical wiring diagram for connecting a microcontroller to a Motoron M1U256/M1U550 Single Serial Motor Controller.

The M1U550 has a TTL serial (UART) interface, and this version ships with soldered headers.

Motoron M1T550/M1U550 Single Motor Controller (Header Pins Soldered).

Motoron M1U550 Single Serial Motor Controller, bottom view.

Features and specifications

One motor control channel allows for control of one bidirectional brushed DC motor per Motoron
Wide operating 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 5.5 V
Control interface:
- M1T550: I²C (up to 400 kHz)
- 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 user’s guide
Compact 0.6" × 0.6" size

A Raspberry Pi Pico on a breadboard using a Motoron M1T550/M1U550 Motor Controller to control a motor.

The Motoron family

The tables below list the members of the Motoron family and show the key differences among them. Each type is available in several versions to provide different options for the through-hole connectors: they can be purchased as an assembled product with connectors soldered in, as a kit with connectors included but not soldered in, or (for Arduino and Raspberry Pi expansions) as a standalone board without connectors.

Motoron motor controllers micro versions

Control interface: I²C	M1T550	M2T550	M1T256	M2T256
Control interface: UART	M1U550	M2U550	M1U256	M2U256
Motor channels:	1 (single)	2 (dual)	1 (single)	2 (dual)
Minimum input voltage:	1.8 V		4.5 V
Absolute max input voltage:	22 V		48 V
Recommended max nominal battery voltage:	16 V		36 V
Max continuous current per channel:	1.8 A	1.6 A	2.2 A	1.8 A
Available versions with I²C:	headers soldered headers included	headers soldered headers included	headers soldered headers included	headers soldered headers included
Available verions with UART serial:	headers soldered headers included	headers soldered headers included	headers soldered headers included	headers soldered headers included

Motoron motor controllers Arduino and Raspberry Pi form factor versions

	M3S550 M3H550	M3S256 M3H256	M2S24v14 M2H24v14	M2S24v16 M2H24v16	M2S18v18 M2H18v18	M2S18v20 M2H18v20
Control interface:	I²C
Motor channels:	3 (triple)		2 (dual)
Minimum input voltage:	1.8 V	4.5 V	6.5 V
Absolute max input voltage:	22 V	48 V	40 V		30 V
Recommended max nominal battery voltage:	16 V	36 V	28 V		18 V
Max continuous current per channel:	1.7 A	2 A	14 A	16 A	18 A	20 A
Available versions for Arduino:	M3S550 assembled kit board only	M3S256 assembled kit board only	M2S24v14 assembled kit board only	M2S24v16 assembled kit board only	M2S18v18 assembled kit board only	M2S18v20 assembled kit board only
Available versions for Raspberry Pi:	M3H550 assembled kit board only	M3H256 assembled kit board only	M2H24v14 assembled kit board only	M2H24v16 assembled kit board only	M2H18v18 assembled kit board only	M2H18v20 assembled kit board only

Dimensions

Size:	0.6" × 0.6"
Weight:	1.9 g

General specifications

Channels:	1
Model:	Motoron M1U550
Control interface:	non-inverted TTL serial (UART)
Minimum operating voltage:	1.8 V
Maximum operating voltage:	22 V
Continuous output current per channel:	1.8 A
Peak output current per channel:	5 A
Reverse voltage protection?:	Y¹
Connectors soldered?:	Y

Identifying markings

PCB dev codes:	mc1u44a
Other PCB markings:	0J14001

Notes:

1: Reverse voltage protection only works up to 20 V.

Documentation and other information

Pololu Motoron Motor Controller User’s Guide

User’s manual for the Pololu Motoron Motor Controllers.

File downloads

Dimension diagram of the Motoron M1x550 Single Motor Controller (729k pdf)
3D model of the Motoron M1x550 Single Motor Controller (5MB step)
Drill guide for the Motoron M1x550 Single Motor Controller (17k dxf)

This DXF drawing shows the locations of all of the board’s holes.

Recommended links

This product is listed in:

Breakouts & Modules>Motor Drivers & Controllers>Brushed DC Motor Controllers

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