How can I troubleshoot CAN bus communication issues? | Seeed Studio Wiki

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How can I troubleshoot CAN bus communication issues? | Seeed Studio Wiki

XIAO CAN Bus Expansion Board-FAQ

https://wiki.seeedstudio.com/troubleshoot_CAN_communication_issues/

[Imrex78]

The transceiver chip used on this CAN BUS expansion board is the SN65HVD230. According to its datasheet, this component operates at 3.3V. Not all boards in the XIAO series run at 3.3V—for example, the RA4M1 operates at 5V. Is this expansion board still compatible with such 5V boards? If not, will there be a 5V-compatible version available, perhaps using a chip like the TLE9371VSJ?

For hardware design purposes, it would be useful to know which pins on the CAN BUS expansion board remain free and which ones are reserved for CAN communication.

It would also be helpful if the board included a DC-DC converter, so it could be powered directly from higher supply voltages—especially in automotive applications. Additionally, having an extra I2C Grove connector on the board would be a great feature.

[nfs0619]

Thanks for the question.

As with other XIAO boards, the RA4M1 uses 3.3V logic levels. It can take 5V as power input, but the I/O pins still operate at 3.3V, so it's compatible with the SN65HVD230 used on the CAN Bus Expansion Board.

We also appreciate your suggestions and will keep your feedback in mind for future improvements. If you have any other questions, I recommend reaching out to our technical support team at [email protected]. They can provide quicker and more detailed answers.