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Motoron M1T550 Single I²C Motor Controller
The Motoron M1T550 Single I²C Motor Controller offers a compact solution for controlling one DC motor using an I²C interface. Multiple Motoron controllers can be connected to the same I²C bus, making it easy to expand a system with additional motors. The M1T550 supports motor supply voltages from 1.8 V to 22 V and can deliver continuous output currents up to 1.8 A. This version ships with header pins included but not soldered in.
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Description | Specs (15) | Pictures (9) | Resources (6) | FAQs (0) | On the blog (1) |
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Overview
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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):
- M1U550 (TTL serial):
For dual-channel alternatives, consider the Motoron M2T550 and M2U550.
Details for item #5075
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Typical wiring diagram for connecting a microcontroller to a Motoron M1T256/M1T550 Single I²C Motor Controller. |
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The M1T550 has an I²C interface, and this version ships with a 1×12 breakaway male header included but not soldered in.
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Features and specifications
- 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:
- 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
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A Raspberry Pi Pico on a breadboard using a Motoron M1T550/M1U550 Motor Controller to control a motor. |
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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 |
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![]() M1T550 ![]() M1U550 |
![]() M2T550 ![]() M2U550 |
![]() M1T256 ![]() M1U256 |
![]() M2T256 ![]() M2U256 |
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Control interface: | I²C or UART serial | |||
Motor channels: | 1 (single) | 2 (dual) | 1 (single) | 2 (dual) |
Minimum motor supply voltage: |
1.8 V | 4.5 V | ||
Absolute max motor supply 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 |
Logic voltage range: | 3.0 V to 4.9 V(1) | 3.0 V to 5.5 V | ||
Current sensing/limiting: | ||||
Available versions with I²C: |
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Available verions with UART serial: |
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Price: | $12.49 – $14.49 | $15.95 – $17.95 | $16.95 – $18.95 | $23.95 – $25.95 |
1 The M1x550 and M2x550 are not recommended for use with 5V nominal logic. |
Motoron motor controllers Arduino and Raspberry Pi form factor versions |
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![]() M3S550 ![]() M3H550 |
![]() M3S256 ![]() M3H256 |
![]() M2S24v14 ![]() M2H24v14 |
![]() M2S24v16 ![]() M2H24v16 |
![]() M2S18v18 ![]() M2H18v18 |
![]() M2S18v20 ![]() M2H18v20 |
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Control interface: | I²C | |||||
Motor channels: | 3 (triple) | 2 (dual) | ||||
Minimum motor supply voltage: |
1.8 V | 4.5 V | 6.5 V | |||
Absolute max motor supply 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 |
Logic voltage range: | M3S550 3.1 V to 5.5 V |
3.0 V to 5.5 V | 3.0 V to 5.5 V | |||
M3H550 3.0 V to 4.9 V(1) |
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Current sensing/limiting: | ||||||
Available versions for Arduino: |
M3S550 | M3S256 | M2S24v14 | M2S24v16 | M2S18v18 | M2S18v20 |
Available versions for Raspberry Pi: |
M3H550 | M3H256 | M2H24v14 | M2H24v16 | M2H18v18 | M2H18v20 |
Price: | $20.95 – $30.95 | $34.95 – $44.95 | $59.95 – $69.95 | $95.95 – $104.95 | $59.95 – $69.95 | $95.95 – $104.95 |
1 The M3H550 is not recommended for use with 5V nominal logic. |