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Green rectangular circuit board with 40-pin header and two black chips

WaveShare

WaveShare 2-Channel Isolated CAN Bus Expansion HAT

SKU CH-0VWS-4YERD

Adds dual isolated CAN bus channels to Raspberry Pi via 40-pin header using MCP2515 and SN65HVD230 chips with onboard TVS diode protection

  • Isolated dual CAN channels protect your Pi
  • MCP2515 controller plus SN65HVD230 transceiver ensure reliable data
  • SM24CANB TVS diode guards against voltage spikes
  • ESD protection keeps the bus stable during transients
  • Standard 40-pin GPIO header fits Raspberry Pi boards

2-Channel Isolated CAN Bus HAT

This add-on card equips a Raspberry Pi with two independent CAN channels using an MCP2515 controller and SN65HVD230 transceivers. It is intended for engineers and hobbyists who need reliable vehicle or industrial bus access from a single-board computer.

Isolated operation under continuous traffic

Onboard isolation and SM24CANB TVS diodes suppress transient peaks and ESD events that appear during long bus sessions. The dual-chip design keeps both channels stable when message rates remain high for extended periods.

Direct 40-pin header mounting

The board aligns with the standard 40-pin GPIO header and requires no extra wiring or adapters. Misaligned pin insertion is the most common issue; verify orientation before applying power to avoid shorts.

How it compares

Measured against everything we stock in PCIe Expansion Cards, at today’s prices. Recalculated every night.

Price $41.99
Pricier than about 64% of the 891 comparable items (median $30.99).

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Specifications

Processor
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Questions about this item

How much power does the 2-Channel Isolated CAN Bus Expansion HAT draw when running all day?

The HAT draws its operating power directly from the Raspberry Pi 40PIN GPIO header, adding minimal load to the Pi's 5 V rail.

What Raspberry Pi model must I already own for this HAT to work?

Any Raspberry Pi series board equipped with the standard 40PIN GPIO header is required for the HAT to connect and function.

Will the MCP2515 and SN65HVD230 chips work alongside an older Pi 3B I keep for testing?

Yes, the HAT uses the standard 40PIN GPIO header found on the Pi 3B, so the dual-chip solution operates identically on that older board.

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