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CONTENTS

Unit Roller485 Lite

SKU:U182-Lite

Description

Roller485 Lite Unit is an integrated brushless DC motor motion control kit designed for efficient motion control. It supports 6-16V DC power input (via PWR485 interface) or 5V input (via Grove interface) and can automatically adjust power coefficients to ensure optimal performance. It features a built-in FOC closed-loop drive system, utilizing a 3504 200KV brushless motor. Without forced cooling, it can operate with a maximum continuous phase current of 0.5A and a short-term current of 1A. The driver uses a magnetic encoder for feedback and supports current, speed, and position control, ensuring precise control.
Additionally, the device is equipped with a 0.66-inch OLED display on the back to display the device's status in real-time. It also includes an RGB indicator light and function button for easy human-computer interaction. The product's base is designed with LEGO-compatible mounting holes and M3 screw holes, making it easy to assemble and integrate. Roller485 Unit’s hardware and software are fully open-source, supporting motion control and parameter adjustment through RS485 or I2C buses. It also offers SWD and SWO debugging interfaces, providing developers with greater flexibility. This product is widely used in robotic joints, motion control, industrial automation, and visual demonstration projects.

Unit Roller485 Lite Unit Roller485 Lite
Unit Roller485 Lite
This tutorial will introduce you the usage of Unit Roller485 Lite
The main difference between Unit-Roller485 Lite and Unit-Roller485 is that the Unit-Roller485 Lite does not include the slip ring extended Grove interface or the top LEGO expansion interface.

Features

  • Brushless DC motor control
  • RS-485/I2C communication control
  • Integrated OLED display
  • RGB indicator light
  • FOC closed-loop drive system

Included

  • 1x Roller485 Lite Unit
  • 1x HT3.96R-4P plug
  • 1x HY2.0-4P Grove cable (5cm)
  • 6x Friction pins
  • 1x Flange
  • 1x Bracket
  • 1x Hex key(2.5mm)
  • 1x Hex key(2mm)
  • 6x M3 nuts
  • 2x Hex socket cup head screws M3x14mm
  • 4x Hex socket countersunk head screws M3x14mm
  • 2x Hex socket countersunk head screws M3x12mm
  • 4x Hex socket countersunk head screws M3x5mm
  • 1x Single-ended terminal wire 5P debugging wire

Applications

  • Robotic joint control
  • Smart manufacturing equipment
  • Visual demonstrations

Specifications

Specification Parameter
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 PWR-485 (HT3.96-4P interface)
I2C (0x64)
Display 0.66-inch OLED display, resolution: 64*48, SPI communication
RGB LEDs 2x WS2812-2020
Motor Power Supply RS-485 (VH3.96-4P interface) power supply@6-16V
Grove port DC 5V 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 DC 5V power supply@70mA
RS-485 (VH3.96-4P interface) power supply DC16V@32mA
Noise Level 48dB
Output Torque Grove port DC 5V power supply: 0.021N.m/0.2kgf.cm@current 350mA
RS485 (VH3.96-4P interface) power supply: 0.065N.m/0.66kgf.cm@current 927mA
Operating Temperature 0-40°C
Product Dimensions 40*40*30mm
Packaging Dimensions 170*75*52mm
Product Weight 70.0g
Packaging Weight 146.9g

Schematic

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\PWR485\RGB\BUTTON
STM32G431CBU6 PA15 PB7 PC11 PC10 PB4 PB5 PC6
I2C SYS_I2C_SCL SYS_I2C_SDA
PWR-485 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

Module Size

Protocol

  • I2C Protocol

Roller485 Unit I2C Protocol Table

Roller485 Unit I2C user manual

  • RS485 Protocol

Roller485 Unit RS485 Protocol Table

Roller485 Unit RS485 user manual

Examples

Arduino

Roller485 Unit Library

STM32 Firmware

Video

  • Roller485 Lite Unit Introduction and Example