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USB to CAN Adapter UCAN STM32F072 – Klipper & CANable
USB to CAN Adapter UCAN STM32F072 – Klipper & CANable
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UCAN USB to CAN Adapter – STM32F072 | CANable / CandleLight / Klipper
The UCAN Board is a compact, low-cost, open-source USB to CAN bus adapter built on the STM32F072 microcontroller. Whether you're running a 3D printer on Klipper firmware, developing on a Raspberry Pi, or debugging a CAN bus network, this versatile adapter bridges your computer's USB port directly to a CAN bus with ease.
It enumerates as a virtual serial port (CANable/slcan mode) or, with the alternative CandleLight firmware, as a native CAN interface on Linux — making it an ideal tool for embedded developers and makers alike.
Key Features
- MCU: STM32F072 ARM Cortex-M0
- Connectivity: Type-C USB socket for modern, secure connections
- CAN Protocol: Supports CAN 2.0A and CAN 2.0B with baud rates up to 1 Mbps
- Firmware Compatible: CANable, CandleLight, and Klipper firmware
- Terminal Block: 3-pin screw terminal — CANH, CANL, GND for easy wiring
- Bootloader Access: Onboard jumper for entering bootloader mode during firmware updates
- 120Ω Termination: Onboard 120R termination resistor, enabled/disabled via jumper
- Platform Compatibility: Raspberry Pi, Raspberry Pi Zero, ODROID, BeagleBone, and other ARM-based platforms
- Build: Plastic + Metal construction
Specifications
| MCU | STM32F072 |
| USB Port | Type-C |
| CAN Standard | CAN 2.0A / CAN 2.0B |
| Max Baud Rate | 1 Mbps |
| Termination | 120Ω (jumper selectable) |
| Material | Plastic + Metal |
| Package Size | 12 × 8 × 1 cm |
| Quantity | 1 pc |
| Country of Origin | Made in Mainland China |
What Is the UCAN Adapter Used For?
The UCAN adapter is perfect for:
- 3D Printing: Use with Klipper firmware to communicate over a CAN bus with toolheads and peripherals
- Embedded Development: Connect CAN bus devices to Linux-based single-board computers
- Network Debugging: Monitor and interact with CAN networks via a simple USB connection
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Further Reading
For best practices in USB and embedded electronics safety, visit the U.S. Consumer Product Safety Commission (CPSC). For standards related to electronics and measurement, see NIST – National Institute of Standards and Technology.
Note: Screen colors may vary slightly from the actual product due to monitor calibration and lighting conditions. Minor measurement tolerances apply.
Frequently Asked Questions
Q: Is the UCAN adapter compatible with Klipper firmware for 3D printing?
A: Yes! The UCAN board with STM32F072 fully supports Klipper firmware, making it an excellent choice for 3D printer builds that use a CAN bus for toolhead communication and peripheral control.
Q: What operating systems does the UCAN USB to CAN adapter support?
A: With CANable/slcan firmware, it enumerates as a virtual serial port on Windows, macOS, and Linux. With the CandleLight firmware, it appears as a native CAN interface on Linux, enabling use with socketcan tools.
Q: Can I use the UCAN adapter with a Raspberry Pi or other single-board computers?
A: Absolutely. The UCAN adapter is compatible with ARM-based embedded platforms including Raspberry Pi, Raspberry Pi Zero, ODROID, and BeagleBone via its standard Type-C USB connection.
Q: How do I update the firmware on the UCAN board?
A: The board includes an onboard jumper that puts it into bootloader mode, allowing you to flash CANable, CandleLight, or Klipper firmware using standard DFU or serial flashing tools.
