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RollerCAN Unit - brushless motor with STM32 controller - Unit extension module - M5Stack U188
RollerCAN Unit is an integrated motion control module with a brushless DC motor , based on the STM32 microcontroller, featuring closed loop FOC, CAN/I2C communication, OLED display and slip ring . Ideal for robotics and industrial automation applications.
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Product description: RollerCAN Unit - brushless motor with STM32 controller - Unit expansion module - M5Stack U188
RollerCAN Unit is a compact module designed for precise motion control in robotic and industrial applications. Based on the STM32G431 microcontroller, the module controls a 3504 type (200 kV) brushless DC motor , using advanced FOC (Field-Oriented Control) technology with three-loop control (current, speed, position). The integrated TLI5012 magnetic encoder provides precise position feedback. Thanks to the use of a slip ring , 360-degree rotation is possible while maintaining communication and power supply via the Grove port, which allows for the installation of additional modules. Additionally, RollerCAN offers an interactive user interface: a 0.66-inch OLED screen, a button and an RGB diode informing about the operating status. The module can be powered via CAN (XT30, from 6 V to 16 V) or the Grove port (5 V). The whole thing is enclosed in a 40 x 40 x 40 mm housing, with LEGO mounts and M3 holes, which makes it easy to mount in various structures. RollerCAN is an open source solution, supporting CAN and I2C communication , as well as debugging via SWD/SWO.
Also check out the user guide prepared by the manufacturer!
RollerCAN Unit - brushless motor with STM32 controller - Unit expansion module - M5Stack U188.
Botland is an official distributor of the M5Stack module family in Poland. We have extended this system of stackable functional devices with accessories from our range and numerous blog guides. All M5Stack products presented here are original.
The integrated OLED display allows you to monitor the operating status in real time.
Main Features of RollerCAN Unit
- Brushless motor - BLDC type with closed control loop FOC
- Control via CAN or I2C - versatile integration with systems
- Slip Ring - Allows continuous rotation and communication through the Grove port
- Built-in 0.66'' OLED display - monitoring operating parameters
- User interface - function button and RGB diode
- LEGO mount and M3 holes - quick assembly for DIY and industrial projects
- Precise control - three-loop control system: current, speed, position
- Power supply from 6 V to 16 V (CAN) or 5 V (Grove) - adjustment in the selection of the power source
- Fully open source - access to firmware and CAN/I2C protocols
Compatibility and programming
RollerCAN Unit is compatible with the M5Stack ecosystem - it can be easily integrated with Core , Stick , Atom series modules and external systems. It supports CAN and I2C communication, allowing control from Arduino IDE, PlatformIO or ESP-IDF . Configuration of parameters such as operating mode (RPM, position, current, encoder), PID or I2C / CAN addresses is done via the configuration menu available from the button and OLED, as well as via communication protocols. The module also provides SWD / SWO interfaces for advanced debugging.
The top and base of the module have LEGO-compatible mounting holes.
The supply voltage should not exceed 16 V.
Connection and power supply
The module offers two independent power supply methods:
- Via XT30 connector (CAN) - voltage from 6 V to 16 V DC
- Through Grove port - 5V DC voltage
Communication takes place via:
- CAN (XT30, two data lines + power supply)
- I2C (Grove)
Thanks to the slip ring, data and power can also be transmitted during full shaft rotation , which makes RollerCAN ideal as a drive for robotic arms or manipulators.
Technical Specifications of the RollerCAN Unit
- Microcontroller: STM32G431CBU6, Cortex M4
- Memory: 128kB Flash, 32kB SRAM
- Motor type: Brushless BLDC D3504, 200 kV, diameter 41 mm
- Driver: DRV8311HRRWR
- Encoder: TLI5012BE1000 (magnetic)
- Display: OLED 0.66'', resolution 64 x 48 px, SPI communication
- Communication interfaces:
- 2x CAN (XT30 connector, 2 + 2 PW-M configuration)
- 2x I2C (address: 0x64)
- LED indicators: 2x WS2812-2020 RGB diodes
- Engine power supply:
- via CAN connector (XT30): 6 V to 16 V DC
- via Grove port: 5V DC
- Slip Ring Power Supply (Grove Port): 5V DC
- Current consumption depending on load (at 16 V DC):
- 50g load: 2100rpm, 225mA
- 200g load: 1400rpm, 601mA
- 500g load (max): 560rpm, 918mA
- No load: 78 mA
- Power consumption in standby mode:
- via Grove port (5V): 70mA
- via CAN (16V): 32mA
- Output torque:
- with Grove power supply (5V): 0.021 N m / 0.2 kgf cm at 350 mA
- with CAN power supply (16 V): 0.065 N m / 0.66 kgf cm at 927 mA
- Slip Ring Current Capacity (Grove Port): 5V/300mA
- Noise level: 48 dB
- Operating temperature: from 0°C to 40°C
- Dimensions: 40 x 40 x 40 mm
- Weight: 84.4 g
The module supports motion control and parameter adjustment via CAN or I2C bus.
Items included in the set.
Contents of the set
- 1x RollerCAN Unit
- 1x PwrCAN power and communication cable (10 cm)
- 2x Grove cables 4-pin, 2 mm pitch (5 cm)
- 6x pin
- 1x mounting flange
- 1x mounting bracket
- 1x Allen key 2.5mm
- 1x 2mm Allen key
- 6x M3 nuts
- 2x Allen screws M3 x 14 mm
- 4x Allen screws M3 x 14mm conical
- 4x Allen screws M3 x 12 mm conical
- 1x 5-pin debugging cable, single-sided, pitch 1.25 mm (10 cm)
Useful links
| Name | Value |
|---|---|
| Voltage to | 5.0 V |
| Voltage from | 16.0 V |
| Rotation speed | 560 obr/min |
| Torque |
|
| UC - Microcontroller | STM32G431CBU6 |
| UC - Core | Cortex M4 |
| UC - Flash | 128 kB |
| UC - RAM | 32 kB |
| UC - I2C | yes |
| UC - CAN interface | yes |
| Width | 10 cm |
| Height | 7.5 cm |
| Depth | 5 cm |
| Weight | 0.159 kg |
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30 days to return, without giving a reason
If the product does not meet your expectations, you have 30 days from receiving the parcel to withdraw from the contract. The product only has to be complete. The right of return belongs to consumers (a purchase unrelated to business activity).
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If the product turns out to be faulty, you can make a claim under the guarantee or the statutory warranty. We handle claims without delay, at the latest within 14 working days of receiving the report together with the goods.
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Instructions and documents
GPSR data
Product information
This product is a component intended for further assembly or prototyping. It is not a finished product within the meaning of the product safety regulations.
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