> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # Motoron M1U550 Single Serial Motor Controller (Header Pins Soldered) **Type:** Product page · **SKU:** POLOLU-5076 · **Brand:** [Pololu](https://core-electronics.com.au/brands/pololu-australia) **Page:** https://core-electronics.com.au/motoron-m1u550-single-serial-motor-controller-header-pins-soldered.html ([markdown](https://core-electronics.com.au/motoron-m1u550-single-serial-motor-controller-header-pins-soldered.html.md)) The Motoron M1U550 Single I²C Motor Controller offers a compact solution for controlling one DC motor using a UART serial interface. Multiple Motoron... ## Pricing - **Price:** $22.15 (inc GST) — $20.14 AUD, exc GST - **Quantity discounts:** 10+ $19.33 (exc GST) · 25+ $18.73 (exc GST) ## Availability & dispatch - Available with a lead time — expect dispatch between Aug 25 and Aug 28. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=POLOLU-5076:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/POLOLU-5076:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description | [![](https://core-electronics.com.au/attachments/localcontent/0J12122_21461ada09c.jpg)](https://core-electronics.com.au/attachments/localcontent/0J12122_134813d4cd3.jpg) | |---| The Motoron M1T550 and M1U550 controllers make it easy to control a single bidirectional, brushed DC [motor](https://core-electronics.com.au/components/motors/metal-gearmotors.html) 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](https://core-electronics.com.au/breakout-boards-and-modules/motor-drivers-controllers/brushed-dc-motor-drivers.html), 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: - M1**T**550 (I²C): - [headers soldered](https://core-electronics.com.au/motoron-m1t550-single-ic-motor-controller-header-pins-soldered.html) - [headers included but not soldered in](https://core-electronics.com.au/motoron-m1t550-single-ic-motor-controller.html) - M1**U**550 (TTL serial): - [headers soldered](https://core-electronics.com.au/motoron-m1u550-single-serial-motor-controller-header-pins-soldered.html) - [headers included but not soldered in](https://core-electronics.com.au/motoron-m1u550-single-serial-motor-controller.html) For dual-channel alternatives, consider the Motoron [M2T550](https://core-electronics.com.au/motoron-m2t550-dual-ic-motor-controller-header-pins-soldered.html) and [M2U550](https://core-electronics.com.au/motoron-m2u550-dual-serial-motor-controller-header-pins-soldered.html). **Details for item #5076** | [![](https://core-electronics.com.au/attachments/localcontent/0J11948_4164426e738.jpg)](https://core-electronics.com.au/attachments/localcontent/0J11948_776154552c3.jpg) | |---| | 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**. | \| [![](https://core-electronics.com.au/attachments/localcontent/0J12124_28149d0350c.jpg)](https://core-electronics.com.au/attachments/localcontent/0J12124_4937935af0c.jpg) \| \|---\| \| Motoron M1T550/M1U550 Single Motor Controller (Header Pins Soldered). \| | \| [![](https://core-electronics.com.au/attachments/localcontent/0J12120_305639881f9.jpg)](https://core-electronics.com.au/attachments/localcontent/0J12120_109978f6878.jpg) \| \|---\|---\| \| 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](https://github.com/pololu/motoron-arduino) simplifies using the Motoron with an Arduino or compatible controller - [Motoron Python library](https://github.com/pololu/motoron-python) simplifies using the Motoron with Python or MicroPython - Comprehensive user’s guide - Compact 0.6" × 0.6" size | [![](https://core-electronics.com.au/attachments/localcontent/0J12126_66187e979c4.jpg)](https://core-electronics.com.au/attachments/localcontent/0J12126_37464ab13c1.jpg) | |---| | 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 | [![](https://core-electronics.com.au/attachments/localcontent/0J12127_2269baa8a9.jpg) M1T550](https://core-electronics.com.au/motoron-m1t550-single-ic-motor-controller-header-pins-soldered.html) | [![](https://core-electronics.com.au/attachments/localcontent/0J12162_31013f172b.jpg) M2T550](https://core-electronics.com.au/motoron-m2t550-dual-ic-motor-controller-header-pins-soldered.html) | [![](https://core-electronics.com.au/attachments/localcontent/0J11939_2374c5ca05.jpg) M1T256](https://core-electronics.com.au/motoron-m1t256-single-ic-motor-controller-header-pins-soldered.html) | [![](https://core-electronics.com.au/attachments/localcontent/0J12163_29476931c4.jpg) M2T256](https://core-electronics.com.au/motoron-m2t256-dual-ic-motor-controller-header-pins-soldered.html) | | Control interface: UART | [![](https://core-electronics.com.au/attachments/localcontent/0J12127_2269baa8a9.jpg) M1U550](https://core-electronics.com.au/motoron-m1u550-single-serial-motor-controller-header-pins-soldered.html) | [![](https://core-electronics.com.au/attachments/localcontent/0J12162_31013f172b.jpg) M2U550](https://core-electronics.com.au/motoron-m2u550-dual-serial-motor-controller-header-pins-soldered.html) | [![](https://core-electronics.com.au/attachments/localcontent/0J11939_2374c5ca05.jpg) M1U256](https://core-electronics.com.au/motoron-m1u256-single-serial-motor-controller-header-pins-soldered.html) | [![](https://core-electronics.com.au/attachments/localcontent/0J12163_29476931c4.jpg) M2U256](https://core-electronics.com.au/motoron-m2u256-dual-serial-motor-controller-header-pins-soldered.html) | | 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](https://core-electronics.com.au/motoron-m1t550-single-ic-motor-controller-header-pins-soldered.html) - [headers included](https://core-electronics.com.au/motoron-m1t550-single-ic-motor-controller.html) | - [headers soldered](https://core-electronics.com.au/motoron-m2t550-dual-ic-motor-controller-header-pins-soldered.html) - [headers included](https://core-electronics.com.au/motoron-m2t550-dual-ic-motor-controller.html) | - [headers soldered](https://core-electronics.com.au/motoron-m1t256-single-ic-motor-controller-header-pins-soldered.html) - [headers included](https://core-electronics.com.au/motoron-m1t256-single-ic-motor-controller.html) | - [headers soldered](https://core-electronics.com.au/motoron-m2t256-dual-ic-motor-controller-header-pins-soldered.html) - [headers included](https://core-electronics.com.au/motoron-m2t256-dual-ic-motor-controller.html) | | Available verions with UART serial: | - [headers soldered](https://core-electronics.com.au/motoron-m1u550-single-serial-motor-controller-header-pins-soldered.html) - [headers included](https://core-electronics.com.au/motoron-m1u550-single-serial-motor-controller.html) | - [headers soldered](https://core-electronics.com.au/motoron-m2u550-dual-serial-motor-controller-header-pins-soldered.html) - [headers included](https://core-electronics.com.au/motoron-m2u550-dual-serial-motor-controller.html) | - [headers soldered](https://core-electronics.com.au/motoron-m1u256-single-serial-motor-controller-header-pins-soldered.html) - [headers included](https://core-electronics.com.au/motoron-m1u256-single-serial-motor-controller.html) | - [headers soldered](https://core-electronics.com.au/motoron-m2u256-dual-serial-motor-controller-header-pins-soldered.html) - [headers included](https://core-electronics.com.au/motoron-m2u256-dual-serial-motor-controller.html) | | **Motoron motor controllers** Arduino and Raspberry Pi form factor versions | |---| | | | | [![](https://core-electronics.com.au/attachments/localcontent/0J12109_3146d26516.jpg) M3S550](https://core-electronics.com.au/motoron-m3s550-triple-motor-controller-shield-for-arduino-connectors-soldered.html) [![](https://core-electronics.com.au/attachments/localcontent/0J12117_3191b6a41d.jpg) M3H550](https://core-electronics.com.au/motoron-m3h550-triple-motor-controller-for-raspberry-pi-connectors-soldered.html) | [![](https://core-electronics.com.au/attachments/localcontent/0J11626_2962be2656.jpg) M3S256](https://core-electronics.com.au/motoron-m3s256-triple-motor-controller-shield-for-arduino-connectors-soldered.html) [![](https://core-electronics.com.au/attachments/localcontent/0J11674_3209e6efee.jpg) M3H256](https://core-electronics.com.au/motoron-m3h256-triple-motor-controller-for-raspberry-pi-connectors-soldered.html) | [![](https://core-electronics.com.au/attachments/localcontent/0J11709_53087bff09.jpg) M2S24v14](https://core-electronics.com.au/motoron-m2s24v14-dual-high-power-motor-controller-shield-for-arduino-connectors-soldered.html) [![](https://core-electronics.com.au/attachments/localcontent/0J11749_5640c9f7f0.jpg) M2H24v14](https://core-electronics.com.au/motoron-m2h18v20-dual-high-power-motor-controller-for-raspberry-pi-connectors-soldered.html) | [![](https://core-electronics.com.au/attachments/localcontent/0J11724_5067aba0d8.jpg) M2S24v16](https://core-electronics.com.au/motoron-m2s24v16-dual-high-power-motor-controller-shield-for-arduino-connectors-soldered.html) [![](https://core-electronics.com.au/attachments/localcontent/0J11751_5485f2f3d2.jpg) M2H24v16](https://core-electronics.com.au/motoron-m2h24v16-dual-high-power-motor-controller-for-raspberry-pi-connectors-soldered.html) | [![](https://core-electronics.com.au/attachments/localcontent/0J11708_5157f41dc0.jpg) M2S18v18](https://core-electronics.com.au/motoron-m2s18v18-dual-high-power-motor-controller-shield-for-arduino-connectors-soldered.html) [![](https://core-electronics.com.au/attachments/localcontent/0J11748_5610a25f07.jpg) M2H18v18](https://core-electronics.com.au/motoron-m2h18v18-dual-high-power-motor-controller-for-raspberry-pi-connectors-soldered.html) | [![](https://core-electronics.com.au/attachments/localcontent/0J11723_513556771e.jpg) M2S18v20](https://core-electronics.com.au/motoron-m2s18v20-dual-high-power-motor-controller-shield-for-arduino-connectors-soldered.html) [![](https://core-electronics.com.au/attachments/localcontent/0J11750_53354ff59d.jpg) M2H18v20](https://core-electronics.com.au/motoron-m2h18v20-dual-high-power-motor-controller-for-raspberry-pi-connectors-soldered.html) | | 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](https://core-electronics.com.au/motoron-m3s550-triple-motor-controller-shield-for-arduino-connectors-soldered.html) - [kit](https://core-electronics.com.au/motoron-m3s550-triple-motor-controller-shield-kit-for-arduino.html) - [board only](https://core-electronics.com.au/motoron-m3s550-triple-motor-controller-shield-for-arduino-no-connectors.html) | **M3S256**- [assembled](https://core-electronics.com.au/motoron-m3s256-triple-motor-controller-shield-for-arduino-connectors-soldered.html) - [kit](https://core-electronics.com.au/motoron-m3s256-triple-motor-controller-shield-kit-for-arduino.html) - [board only](https://core-electronics.com.au/catalog/product/view/sku/POLOLU-5032) | **M2S24v14**- [assembled](https://core-electronics.com.au/motoron-m2s24v14-dual-high-power-motor-controller-shield-for-arduino-connectors-soldered.html) - [kit](https://core-electronics.com.au/motoron-m2s24v14-dual-high-power-motor-controller-shield-kit-for-arduino.html) - [board only](https://core-electronics.com.au/motoron-m2s24v14-dual-high-power-motor-controller-shield-for-arduino-no-connectors.html) | **M2S24v16**- [assembled](https://core-electronics.com.au/motoron-m2s24v16-dual-high-power-motor-controller-shield-for-arduino-connectors-soldered.html) - [kit](https://core-electronics.com.au/motoron-m2s24v16-dual-high-power-motor-controller-shield-kit-for-arduino.html) - [board only](https://core-electronics.com.au/motoron-m2s24v16-dual-high-power-motor-controller-shield-for-arduino-no-connectors.html) | **M2S18v18**- [assembled](https://core-electronics.com.au/motoron-m2s18v18-dual-high-power-motor-controller-shield-for-arduino-connectors-soldered.html) - [kit](https://core-electronics.com.au/motoron-m2s18v18-dual-high-power-motor-controller-shield-kit-for-arduino.html) - [board only](https://core-electronics.com.au/motoron-m2s18v18-dual-high-power-motor-controller-shield-for-arduino-no-connectors.html) | **M2S18v20**- [assembled](https://core-electronics.com.au/motoron-m2s18v20-dual-high-power-motor-controller-shield-for-arduino-connectors-soldered.html) - [kit](https://core-electronics.com.au/motoron-m2s18v20-dual-high-power-motor-controller-shield-kit-for-arduino.html) - [board only](https://core-electronics.com.au/motoron-m2s18v20-dual-high-power-motor-controller-shield-for-arduino-no-connectors.html) | | Available versions for Raspberry Pi: | **M3H550**- [assembled](https://core-electronics.com.au/motoron-m3h550-triple-motor-controller-for-raspberry-pi-connectors-soldered.html) - [kit](https://core-electronics.com.au/motoron-m3h550-triple-motor-controller-kit-for-raspberry-pi.html) - [board only](https://core-electronics.com.au/motoron-m3h550-triple-motor-controller-for-raspberry-pi-no-connectors-or-standoffs.html) | **M3H256**- [assembled](https://core-electronics.com.au/motoron-m3h256-triple-motor-controller-for-raspberry-pi-connectors-soldered.html) - [kit](https://core-electronics.com.au/motoron-m3h256-triple-motor-controller-kit-for-raspberry-pi.html) - [board only](https://core-electronics.com.au/motoron-m3h256-triple-motor-controller-for-raspberry-pi-no-connectors-or-standoffs.html) | **M2H24v14**- [assembled](https://core-electronics.com.au/motoron-m2h24v14-dual-high-power-motor-controller-for-raspberry-pi-connectors-soldered.html) - [kit](https://core-electronics.com.au/motoron-m2h24v14-dual-high-power-motor-controller-kit-for-raspberry-pi.html) - [board only](https://core-electronics.com.au/motoron-m2h24v14-dual-high-power-motor-controller-for-raspberry-pi-no-connectors-or-standoffs.html) | **M2H24v16**- [assembled](https://core-electronics.com.au/motoron-m2h24v16-dual-high-power-motor-controller-for-raspberry-pi-connectors-soldered.html) - [kit](https://core-electronics.com.au/motoron-m2h24v16-dual-high-power-motor-controller-kit-for-raspberry-pi.html) - [board only](https://core-electronics.com.au/motoron-m2h24v16-dual-high-power-motor-controller-for-raspberry-pi-no-connectors-or-standoffs.html) | **M2H18v18**- [assembled](https://core-electronics.com.au/motoron-m2h18v18-dual-high-power-motor-controller-for-raspberry-pi-connectors-soldered.html) - [kit](https://core-electronics.com.au/motoron-m2h18v18-dual-high-power-motor-controller-kit-for-raspberry-pi.html) - [board only](https://core-electronics.com.au/motoron-m2h18v18-dual-high-power-motor-controller-for-raspberry-pi-no-connectors-or-standoffs.html) | **M2H18v20**- [assembled](https://core-electronics.com.au/motoron-m2h18v20-dual-high-power-motor-controller-for-raspberry-pi-connectors-soldered.html) - [kit](https://core-electronics.com.au/motoron-m2h18v20-dual-high-power-motor-controller-kit-for-raspberry-pi.html) - [board only](https://core-electronics.com.au/motoron-m2h18v20-dual-high-power-motor-controller-for-raspberry-pi-no-connectors-or-standoffs.html) | **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?: | Y[1](https://core-electronics.com.au/#note1) | | 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** - ![](https://core-electronics.com.au/attachments/localcontent/0J11628_582262abc3.jpg)**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](https://core-electronics.com.au/attachments/localcontent/motoron-m1x550-single-motor-controller-dimensions_72901da7e40.pdf) (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** - **[Motoron Motor Controller library for Arduino](https://github.com/pololu/motoron-arduino)** - **[Motoron Motor Controller Python library for Python/MicroPython](https://github.com/pololu/motoron-python)** ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/P/O/POLOLU-5076-1.jpg)