Motoron M3S256 Triple Motor Controller Shield for Arduino (No Connectors)

The Motoron M3S256 Triple Motor Controller Shield for Arduino makes it easy to control DC motors from an Arduino or Arduino-compatible board through an I²C interface.

AUD$ 51.95

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Our Code: SKU-008642

Supplier Link: [Pololu MPN:5032]



The Motoron M3S256 shield makes it easy to control up to three bidirectional, brushed DC motors with an Arduino or compatible board, such as the A-Star 32U4 Prime. It operates from 4.5 V to 48 V and can deliver continuous output currents up to 2 A per motor. Multiple Motoron controllers can be stacked on top of each other, allowing independent control of many motors. Unlike most of our motor drivers and motor driver shields, the Motoron does not require any PWM outputs or timers on your Arduino. Instead, the Arduino communicates with the Motoron using I²C, so only two I/O lines are needed regardless of how many Motorons you connect.

Using the Motoron M3S256 Triple Motor Controller Shield with an Arduino.

Three M3S256 versions are available to provide different options for the through-hole connectors:

Details for item #5032

Motoron M3S256 Triple Motor Controller Shield for Arduino (No Connectors).

This Motoron version is just the assembled PCB module as shown above, with no connectors included. This version is intended for those who mostly want to solder wires directly to the board or use different connectors from those included with other versions. We have a variety of connectors available separately.

Features and specifications

  • Wide operating voltage range: 4.5 V to 48 V
  • Maximum output current per motor: 2.0 A continuous, 6.4 A peak for <1 second
  • Reverse-voltage protection on motor power supply (down to -40 V)
  • Logic voltage range: 2.8 V to 5.5 V
  • Control interface: I²C
  • I²C clock speed: up to 400 kHz
  • 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 motors if the Arduino stops functioning
  • Configurable automatic error response
  • Motor power supply (VIN) voltage measurement
  • Optional pins make it easy to power the Arduino from reverse-protected motor power, either directly or through an external regulator (not included)
  • Two status LEDs
  • Motor direction indicator LEDs
  • Motoron Arduino library simplifies getting started using the Motoron with an Arduino or compatible controller
  • Comprehensive user’s guide



Size: 1.3″ × 2.02″
Weight: 7.5 g

General specifications

Channels: 3
Model: Motoron M3S256
Control interface: I²C
Minimum operating voltage: 4.5 V
Maximum operating voltage: 48 V1
Continuous output current per channel: 2.0 A
Peak output current per channel: 6.4 A
Reverse voltage protection?: Y2
Connectors soldered?: N

Identifying markings

PCB dev codes: mc3s42a
Other PCB markings: 0J13556


Not recommended for use with 48V batteries.
Note: Reverse voltage protection only works up to 40 V.


Documentation and other information

File downloads

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