The RollerCAN Unit is a brushless DC motor motion control kit that supports 6-16V DC input via the CAN (XT30) interface or 5V input through the Grove connection, with automatic power factor adjustment for optimal performance. Its FOC closed-loop drive system uses a 3504 200KV brushless motor, delivering a continuous phase current of up to 0.5A without forced cooling and 1A for short bursts. Feedback from a magnetic encoder gives you precise control of current, speed, and position. There is an optional slip ring on the shaft, providing a continuous 360° rotation while keeping the Grove connection connected between the top and base. This allows for power and data transmission through the rotating part and makes it easy to expand with additional modules. The slip ring also provides an extra I2C Connector. A 0.66" OLED display on the back provides real-time status updates, and the RGB indicator and function button makes interaction with it simple. The top and base include LEGO-compatible mounting holes and M3 screw holes, making it easy to assemble and incorporate into builds. The hardware and software are open-source, supporting motion control and parameter adjustments via CAN or I2C buses, and providing SWD and SWO debugging interfaces for developers. There are two versions of this unit. Unit Only and with Slip Ring. Please choose which option you want before adding to the cart! Features * Brushless DC motor control * CAN communication / I2C communication control * Integrated OLED display * RGB indicator light * FOC closed-loop drive system * Slip ring (Optional) 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 Ports 2x CAN (XT30 interface) @ XT30 (2+2) PW-M 2x I2C (0x64) (1x I2C without Ring) Display 0.66" OLED display, Resolution: 64 x 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 (Optional) 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 (Optional) DC5V / 300mA Noise Level 48dB Operating Temperature 0-40°C Product Dimensions 40 x 40 x 40mm (40 x 40 x 30 without Ring) Package Dimensions 170 x 75 x 52mm Product Weight 84.4g (71.9g without Ring) Package Weight 157.7g (150.4 without Ring) Resources * Product Wiki Package Contents Unit Only * 1x RollerCAN Lite Unit * 1x PwrCAN Cable (10cm) * 1x HY2.0 4-pin Grove Cable (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 socket cap screws M3x10mm * 1x Inner hex socket cap screw M2x5mm * 4x Inner hex countersunk screws M3x14mm * 2x Inner hex countersunk screws M3x12mm * 4x Inner hex countersunk screws M3x5mm * 1x Single-head terminal cable 5P debugging cable, 1.25mm pitch, 100mm length With Slip Ring * 1x RollerCAN Unit * 1x PwrCAN Cable (10cm) * 2x HY2.0 4-pin 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 https://elecena.pl/product/27308466/rollercan-unit-with-bldc-motor-stm32 2024-11-20 https://elecena.pl/product/27308466/rollercan-unit-with-bldc-motor-stm32 2024-11-29 https://elecena.pl/product/27308466/rollercan-unit-with-bldc-motor-stm32 2024-11-30 https://elecena.pl/product/27308466/rollercan-unit-with-bldc-motor-stm32 2025-04-29 https://elecena.pl/product/27308466/rollercan-unit-with-bldc-motor-stm32 2025-11-28 https://elecena.pl/product/27308466/rollercan-unit-with-bldc-motor-stm32 2025-11-29