The Motoron M1U256 Single I²C Motor Controller offers a compact solution for controlling one/two DC motors 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 M1U256 operates from 4.5 V to 48 V and can deliver continuous output currents up to 2.2 A.

Available options:

version ships with soldered headers.
version ships with header pins included but not soldered in.

Overview:

The Motoron M1T256 and M1U256 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 4.5 V to 48 V and can deliver continuous output currents up to 2.2 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:

The M1U256 has a TTL serial (UART) interface, and this version ships with a 1×12 breakaway male header included but not soldered in.

Features and specifications

One motor control channel allows for control of one bidirectional brushed DC motor per Motoron
Wide operating voltage range: 4.5 V to 48 V (absolute maximum)

Recommended maximum nominal battery voltage is approximately 36 V

Maximum output current per motor: 2.2 A continuous, 6.4 A peak for <1 second
Reverse-voltage protection on motor power supply (down to -40 V)
Logic voltage range: 3.0 V to 5.5 V
Control interface:

M1T256: I²C (up to 400 kHz)
M1U256: 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 code
Comprehensive user’s guide
Compact 0.6″ × 0.6″ size