WSAL23635 – USB-CAN-A/en

Documentation notice: This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.

Summary

The Waveshare USB-CAN-A is a USB-to-CAN adapter based on an STM32 chip. It supports CAN 2.0A/2.0B, four operating modes, and configurable baud rates from 5 kbps to 1 Mbps. The default serial port baud rate is 2 Mbit/s.

Related products at JW Tech

• WSAL23635 – USB to CAN Adapter Model A, STM32 Chip Solution, Multiple Working modes, Multi-system Compatible

Technical overview

• Supports CAN 2.0A (standard frame) and CAN 2.0B (extended frame).
• CAN baud rate range: 5 kbps to 1 Mbps; the serial port baud rate defaults to 2 Mbit/s.
• Four operating modes: normal mode, loopback mode, silent mode, and silent loopback mode.
• Various transmission methods: single-frame, multi-frame, manual transmission, timed transmission, and cyclic transmission.
• Reception options: receive only data with specified IDs or configure IDs to automatically respond with predefined data.
• Data can be saved as TXT or EXCEL files.
• Onboard TVS suppresses surge voltage and transient spikes in the circuit.
• Configuration can be set via software or serial commands and persists after power-off.
• Both Chinese and English versions of the Windows host software are provided.
• CH341SER driver is used for installation; the configuration tool requires no installation and runs directly after unzipping.

Commands and examples – verify before use: 

AA C8 23 01 11 22 33 44 55 66 77 88 55

Notes and version constraints

• No Python-specific demos are available; communication happens via serial commands or the supplied tool.
• The exact mapping between LED flash sequences and baud rates must be verified before changing the COM baud rate.
• If receiving fails while sending works, check the filter ID setting (set to 0x00000000 to accept all IDs).
• Whether GND connections are required depends on the application environment; a GND connection is recommended for long cables (>1 m), different power sources, or noisy environments.
• Version-specific details of the configuration tool (currently version 2.12) must be verified before use.

Source and revision record

• USB-CAN-A - Waveshare Wiki
• Source revision: 110827
• Captured: 2026-08-29T08:19:47+00:00
• SHA-256: 4b70176ab4f47c3c075eef7155fccf3813ca5b60f2fc3a3c4fcdf7058e4aaadc