The Roller485 Unit is a brushless DC motor (BLDC) actuator kit made for efficient motion control. It supports both 6-16V DC input via the PWR485 interface and 5V input via the Grove connector, automatically adjusting power for optimal performance. It has a FOC closed-loop drive system and a 3504 200KV motor, providing precise control of current, speed, and position. It includes a magnetic encoder for feedback, an OLED display for real-time status, RGB indicators, and LEGO-compatible mounting options. Ideal for robotics, industrial automation, and more, it supports RS485 and I2C communication with open-source hardware and software for flexible integration. Note: The main difference between the Unit-Roller485 Lite and Unit-Roller485 is that the Lite version does not include the slip ring extended Grove connector or the top LEGO expansion interface. To purchase the lite version, click here Features * Brushless DC motor control (BLDC) * RS-485 communication / I2C communication control * Integrated OLED display * RGB indicator lights * FOC closed-loop drive system Specifications 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" 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 power supply Slip ringGrove port DC5V power supply Load Load: 50g Motor Speed: 2100rpm Current: DC16V/225mA Load: 200g Motor Speed: 1400rpm Current: DC16V/601mA Load: 500g Motor Speed: 560rpm Current: DC16V/918mA No load: DC16V/78mA Standby Current Grove port DC5V power supply @ 70mA RS-485 (HT3.96-4P interface) power supply DC16V @ 32mA Output Torque Grove port DC5V power supply: 0.021N.m/0.2kgf.cm @ current 350mA RS485 (VH3.96-4P interface) DC16V power supply: 0.065N.m/0.66kgf.cm @ current 927mA Slip Ring (Grove Port) Output Capacity DC5V/300mA Noise 48dB Operating Temperature 0-40°C Product Size 40 x 40 x 40mm Packaging Size 170 x 75 x 52mm Product Weight 82.9g Packaging Weight 158.1g Resources * Product Wiki * Unit Roller485 Tutorial Arduino Example Code * Roller485 Unit Library * STM32 Firmware Package Contents * 1x Roller485 Unit * 1x HT3.96R-4P plug * 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 M3x14mm socket head screws * 4x M3x14mm countersunk head screws * 4x M3x12mm countersunk head screws * 1x Single-end terminal wire 5P debugging cable https://elecena.pl/product/26952948/roller485-unit-with-bldc-motor-stm32 2024-09-24 https://elecena.pl/product/26952948/roller485-unit-with-bldc-motor-stm32 2024-11-29 https://elecena.pl/product/26952948/roller485-unit-with-bldc-motor-stm32 2024-11-30 https://elecena.pl/product/26952948/roller485-unit-with-bldc-motor-stm32 2025-04-29 https://elecena.pl/product/26952948/roller485-unit-with-bldc-motor-stm32 2025-11-28 https://elecena.pl/product/26952948/roller485-unit-with-bldc-motor-stm32 2025-11-29