STM32 USB CAN Module Compact

This USB-to-CAN interface measures 40 mm in length, 16 mm in width and 10.5 mm in height, weighing approximately 12 g. It connects via standard USB-A and draws power directly from the host — no external supply needed. The core processor is the STM32F072C8T6, offering deterministic CAN timing, flexible bitrate configuration and support for both standard and extended frame formats. Hardware design is fully open-source; three visible LEDs show power presence, outgoing messages and incoming messages independently. Designed for continuous, low-latency CAN data acquisition and injection — suitable for live ECU signal mapping, robotic actuator feedback monitoring and classroom CAN protocol dissection. Works out-of-the-box with popular open-source tools including CANalyze, Kayak and CAN Monitor, as well as commercial platforms like Vector CANoe (via virtual COM port emulation). Deployed by UK-based EV startups validating battery BMS communication, German automation integrators verifying CANopen device profiles, and technical colleges teaching ISO 11898 compliance in real-world wiring scenarios.