Arduino CAN BUS (OBD) Shield with MCP2515 Controller
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Prices updated: 13 Oct 2026
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About this product
A shield that adds CAN bus communication to an Arduino board, using the Microchip MCP2515 CAN controller and an OBD connector for vehicle access. The controller talks to the Arduino over SPI. Suited to car diagnostics, vehicle data logging and CAN bus experiments.
Specifications
- CAN controller
- MCP2515
- Protocol
- CAN 2.0B
- Host interface
- SPI
- Maximum CAN bit rate
- 1 Mb/s
- Vehicle connector
- OBD
Frequently asked questions
Which Arduino boards is it compatible with?
It is designed for Arduino UNO-style boards. It uses the SPI pins on the board header, so check the shield's pin markings and avoid sharing those pins with other shields or modules.
Do I need a library to use the CAN shield?
Yes. Use an MCP2515-compatible CAN library, which handles the controller's register setup and the sending and receiving of CAN frames over SPI.
