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CONTENTS

Unit-RollerCAN

SKU:U188

Description

RollerCAN Unit is a brushless DC motor motion control kit with multiple integrated control functions, designed for efficient motion control. It supports 6-16V DC power input (via the CAN (XT30) interface) or 5V input (via the Grove interface) and can automatically adjust the power factor to ensure optimal performance. It features a built-in FOC closed-loop drive system, using a 3504 200KV brushless motor. The maximum continuous operating phase current is 0.5A without forced cooling, and 1A for short-term. The driver uses a magnetic encoder for feedback and supports current, speed, and position triple-loop control, ensuring precise control. The unit’s shaft can optionally include a slip ring, allowing the Grove interface on the top to remain connected with the bottom, supporting 360° rotation while expanding additional modules at the top. This ensures power and data transmission through the rotating part.

Additionally, the unit is equipped with a 0.66-inch OLED display on the back, which can display the device status in real-time. It also includes an RGB indicator and function button for easy human-machine interaction. The top and base are designed with LEGO-compatible mounting holes and M3 screw holes, making it easy to build and integrate quickly. RollerCAN Unit's hardware and software are fully open-source, supporting motion control and parameter adjustment via CAN or I2C buses, and it also provides SWD and SWO debugging interfaces, offering developers greater flexibility. This product is widely used in machine joints, motion control, industrial automation, and visual demonstration projects.

RollerCAN Unit RollerCAN Unit
RollerCAN Unit
This tutorial will introduce you to the Unit RollerCAN usage guide
Power supply voltage
Do not exceed 16V, the motor will show error code E:1 and not work when the voltage exceeds 18V, displaying "Over Voltage", and the LED will light up blue.

Features

  • Brushless DC motor control
  • CAN communication / I2C communication control
  • Integrated OLED display
  • RGB indicator light
  • FOC closed-loop drive system
  • Slip ring

Package Includes

  • 1x RollerCAN Unit
  • 1x PwrCAN Cable (10cm)
  • 2x HY2.0-4P Grove cables (5cm)
  • 6x friction pins
  • 1x flange
  • 1x bracket
  • 1x hex key (2.5mm)
  • 1x hex key (2mm)
  • 6x M3 nuts
  • 2x inner hex socket cap screws M3x14mm
  • 4x inner hex countersunk screws M3x14mm
  • 4x inner hex countersunk screws M3x12mm
  • 1x single-head terminal cable 5P debugging cable 1.25mm pitch, 100mm length
includes

Applications

  • Robotic joint control
  • Intelligent manufacturing equipment
  • Visual demonstrations

Specifications

Specification Parameters
MCU STM32G431CBU6 @ Cortex-M4, 128KB Flash, 32KB SRAM, 170MHz
Motor Type D3504 200KV brushless motor @ diameter: 41mm
Driver Chip DRV8311HRRWR
Angle Sensor TLI5012BE1000
Communication Interface 2x CAN (XT30 interface) @ XT30 (2+2) PW-M
2x I2C (0x64)
Display 0.66-inch OLED display, resolution: 64*48, SPI communication
RGB LEDs 2x WS2812-2020
Motor Power Supply CAN (XT30 interface) @ 6-16V power supply
Grove port DC5V power supply
Slip ring_Grove port DC5V power supply
Load Load: 50g Motor speed: 2100rpm Current: DC16V/225mA
Load: 200g Motor speed: 1400rpm Current: DC16V/601mA
Load: 500g (maximum load) Motor speed: 560rpm Current: DC16V/918mA
No load: DC16V/78mA
Standby Current Grove port DC5V power supply @ 70mA
CAN (XT30 interface) power supply DC16V @ 32mA
Output Torque Grove port DC5V power supply: 0.021N.m / 0.2kgf.cm @ 350mA current
CAN (XT30 interface) DC16V power supply: 0.065N.m / 0.66kgf.cm @ 927mA current
Slip Ring (Grove port) Output Capacity DC5V / 300mA
Noise Level 48dB
Operating Temperature 0-40°C
Product Dimensions 40*40*40mm
Package Dimensions 170*75*52mm
Product Weight 84.4g
Package Weight 157.7g

Schematics

schematics

PinMap

  • PORT A interface
PORT A SCL SDA VCC GND
Core (Basic) G22 G21 5V GND
Core2 G33 G32 5V GND
CoreS3 G1 G2 5V GND
Atom Lite / Atom Matrix G21 G25 5V GND
AtomS3 / AtomS3 Lite G39 G38 5V GND
StickC PLUS / PLUS2 G33 G32 5V GND
  • I2C\CAN\RGB\BUTTON
STM32G431CBU6 PA15 PB7 PA11 PA12 PB4 PB5 PC6
I2C SYS_I2C_SCL SYS_I2C_SDA
CAN FDCAN_RX FDCAN_TX CAN_STB
WS2812C LED_DAT
Button A SYS_SW
  • OLED
STM32G431CBU6 PB15 PB13 PB14 PB10 PB12
OLED OLED_MOSI OLED_SCK OLED_DC OLED_RST OLED_CS

Module Size

Protocols

  • I2C Protocol

RollerCAN Unit I2C Protocol Table

RollerCAN Unit I2C User Manual

  • CAN Protocol

RollerCAN Unit CAN Protocol Table

RollerCAN Unit CAN User Manual

Examples

Arduino

RollerCAN Unit Library

RollerCAN Unit Internal Firmware

Videos

  • RollerCAN Unit Product Introduction and Case Showcase

Product Comparison

Product Comparison Unit RollerCAN Unit RollerCAN Unit RollerCAN Lite Unit RollerCAN Lite Unit Roller485 Unit Roller485 Unit Roller485 Lite Unit Roller485 Lite
Driver Chip DRV8311 DRV8311 DRV8311 DRV8311
Communication CAN/I2C CAN/I2C RS485/I2C RS485/I2C
Slip Ring With Slip Ring Without Slip Ring With Slip Ring Without Slip Ring
Power Indicator LED Color Blue None Green None
Product Color Black Black Gray Gray