Unit Roller485
Get one now !
Description
Unit Roller485 is a brushless DC motor motion execution kit with integrated control functions, designed for efficient motion control. The product supports 6-16V DC power input (via the PWR485 interface) or 5V input (via the Grove interface), and can automatically adjust the power coefficient to ensure optimal performance.
It features a built-in FOC closed-loop drive system, using a 3504 200KV brushless motor, with a maximum continuous phase current of 0.5A and a short-term peak of 1A without forced cooling. The driver uses a magnetic encoder as feedback, supporting current, speed, and position triple-loop control to ensure precise control. The device offers an optional electrical slip ring, allowing the top Grove interface to remain connected to the bottom even during 360° rotation, enabling additional modules to be expanded on the top while ensuring power and data transmission for the rotating part.
Additionally, the device is equipped with a 0.66-inch OLED display on the back to show real-time status. It also includes built-in RGB indicators and function buttons for easy human-machine interaction. The product's top and base designs feature LEGO-compatible mounting holes and M3 screw holes for quick assembly and integration. Unit Roller485 is fully open-source in both hardware and software, supporting motion control and parameter adjustment via RS485 or I2C buses, and provides SWD and SWO debugging interfaces, further enhancing developer flexibility. This product is widely used in robotic joints, motion control, industrial automation, and visual demonstration projects.
Learn
Features
- Brushless DC motor control
- RS-485/I2C communication control
- Integrated OLED display
- RGB indicators
- FOC closed-loop drive system
- Slip ring
Includes
- 1 x Unit Roller485
- 1 x HT3.96R-4P connector
- 2 x HY2.0-4P Grove cables (5cm)
- 6 x Friction pins
- 1 x Flange
- 1 x Bracket
- 1 x Hex key (2.5mm)
- 1 x Hex key (2mm)
- 6 x M3 nuts
- 2 x Hex socket head M3x14mm screws
- 4 x Hex socket head M3x14mm screws
- 4 x Hex socket head M3x12mm screws
- 1 x Single-ended terminal cable 5P debugging cable
Applications
- Robotic joint control
- Smart 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 Interfaces | 1x PWR-485 (HT3.96-4P interface) 2x I2C (0x64) |
| Display | 0.66-inch OLED display, resolution: 64 x 48, SPI communication |
| RGB LEDs | 2x WS2812-2020 |
| Motor Power Supply | PWR-485 (HT3.96-4P interface) @6-16V Grove port DC5V Slip ring_Grove port DC5V |
| 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@70mA RS-485 (HT3.96-4P interface) DC16V@32mA |
| Output Torque | Grove port DC5V: 0.021N.m/0.2kgf.cm@current 350mA RS485 (VH3.96-4P interface) DC16V: 0.065N.m/0.66kgf.cm@current 927mA |
| Slip Ring (Grove port) Output | DC5V/300mA |
| Noise | 48dB |
| Operating Temperature | 0 ~ 40°C |
| Product Dimensions | 40 x 40 x 40mm |
| Package Dimensions | 170 x 75 x 52mm |
| Product Weight | 82.9g |
| Gross Weight | 158.1g |
Learn
Schematics
PinMap
Unit Roller485
| HY2.0-4P | Black | Red | Yellow | White |
|---|---|---|---|---|
| PORT.A | GND | 5V | SDA | SCL |
I2C, PWR485, RGB, Button
| STM32G431CBU6 | PA15 | PB7 | PC11 | PC10 | PB4 | PB5 | PC6 |
|---|---|---|---|---|---|---|---|
| I2C | SYS_I2C_SCL | SYS_I2C_SDA | |||||
| PWR485 | RS485_RX | RS485_TX | RS485_DIR | ||||
| 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 |
Model Size
Datasheets
Softwares
Arduino
Internal Firmware
Communication Protocols
I2C Protocol
RS485 Protocol
Video
- Unit Roller485 Product Introduction and Case Demonstration
-- UIFlow Use