The Pololu Motoron M1U550 Single I²C 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 12x1 header strip. 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 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 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: * M1T550 (I²C): * 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 user’s guide * Compact 0.6″ × 0.6″ size 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 5A Minimum logic voltage 3.0 V Maximum logic voltage 4.9 V Reverse voltage protection? Y Connectors soldered? Y Size 0.6″ × 0.6″ Weight 1.9 g 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) https://elecena.pl/product/24831468/pololu-motoron-m1u550-single-serial-motor-controller 2024-01-17 https://elecena.pl/product/24831468/pololu-motoron-m1u550-single-serial-motor-controller 2024-09-18 https://elecena.pl/product/24831468/pololu-motoron-m1u550-single-serial-motor-controller 2024-11-29 https://elecena.pl/product/24831468/pololu-motoron-m1u550-single-serial-motor-controller 2024-11-30 https://elecena.pl/product/24831468/pololu-motoron-m1u550-single-serial-motor-controller 2025-02-13 https://elecena.pl/product/24831468/pololu-motoron-m1u550-single-serial-motor-controller 2025-04-09 https://elecena.pl/product/24831468/pololu-motoron-m1u550-single-serial-motor-controller 2025-08-05 https://elecena.pl/product/24831468/pololu-motoron-m1u550-single-serial-motor-controller 2025-11-28 https://elecena.pl/product/24831468/pololu-motoron-m1u550-single-serial-motor-controller 2025-11-29 https://elecena.pl/product/24831468/pololu-motoron-m1u550-single-serial-motor-controller 2026-01-08 https://elecena.pl/product/24831468/pololu-motoron-m1u550-single-serial-motor-controller 2026-03-30