PiCAN2 - CAN Bus Interface for Raspberry Pi

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The PiCAN2 extends your Raspberry Pi with full CAN‑Bus functionality by integrating the Microchip MCP2515 controller and MCP2551 transceiver. It supports CAN 2.0 A/B at speeds up to 1 Mb/s over a high‑speed 10 MHz SPI interface, enabling both standard and extended data and remote frame transmission.

Connections are versatile, offering either a DB9 port or a screw‑terminal block for interfacing with OBD‑II and SAE J1939 systems. Installation is streamlined thanks to a SocketCAN driver that appears as a can0 network device in Linux, and users can leverage both C and Python for CAN‑Bus application development.

The board complies with the Raspberry Pi HAT standard through its four mounting holes and integrates a 120 Ω termination resistor along with an interrupt output on GPIO25, making setup and deployment straightforward and reliable.

Fully compatible with Raspberry Pi 4 and 5, the PiCAN2 is a compact yet powerful solution for hobbyists, engineers, or anyone seeking to turn a Raspberry Pi into a CAN‑Bus node.

Raspberry Pi 4/5 Compatibility

The PiCAN board is fully compatible with the new Raspberry Pi 4 & 5.

Features

CAN 2.0 A/B (ISO 11898) at up to 1 Mb/s
High speed SPI Interface (10 MHz)
Standard and extended data and remote frames
CAN Bus connection via standard 9-way sub-D connector or screw terminal
Compatible with OBDII and SAE J1939
Solder bridge to set different configuration for DB9 connector
120 Ohm termination resistor
Four fixing holes, in compliance with Pi HAT standard
SocketCAN driver, appears as can0 to application
Interrupt RX on GPIO25

Installing CAN and Python Tools

Documents

Download the CAN Test Programs

Please click here to Download the CAN Test Programs. The link in the user manual does not work, but the documentation is being updated.

Connections (Pins) Used On 40-Pin Header

PiCAN2 Use of Raspberry Pi 40 Pin Header

The PiCAN2 CAN Bus interface board uses the highlighted pins on the Raspberry Pi's 40-pin header.

PiCAN2 CAN Bus HAT for Raspberry Pi - Getting Access To The 40-pin GPIO Header...

Recommended Literature:

Other Resources:

Cables:

OBD2 16Pin to DB9 Adapter Cable - Use Board Settings for OBD-II
SAE J1939 9pin Cable to DB9 Female - Use Board Settings for Standard CAN

Plastic Enclosure for PiCAN2 and Raspberry Pi 2/3

This is a two part clip together plastic enclosure for use with the PiCAN2 board and the Raspberry Pi 2/3. The enclosure is made from High Impact Polystyrene HIPS UL94-HB material. Mounting flanges allow for wall mounting.

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Programming the Raspberry Pi - Getting Started with Python

Learn to create innovative programs and fun games on your powerful Raspberry Pi computer with practically no programming expertise required. This useful book has been updated to fully cover the newest Raspberry Pi, including upgrades to the Raspbian operating system.

Explore how to configure hardware and software, write Python scripts, build user-friendly GUIs, and control external electronics. DIY projects include a hangman game, RGB LED controller, digital clock, and RasPiRobot complete with an ultrasonic rangefinder.

Set up your Raspberry Pi and explore its features
Navigate files, folders, and menus
Write Python programs using the IDLE editor
Use strings, lists, functions, and dictionaries
Work with modules, classes, and methods
Create user-friendly games using Pygame
Build intuitive user interfaces with Tkinter
Attach external electronics through the GPIO port
Add powerful Web features to your projects

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Product Videos

PiCAN2 CAN-Bus OBDII Data Logger for Raspberry Pi 02:14

This video is a demo of PiCAN2 OBDII data logger for the Raspberry Pi. More info and python code on this project http://www.skptechnology.co.uk/pican2-obdii-data-logger-for-raspberry-pi/

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PiCAN 2 - CAN Bus Interface for Raspberry Pi

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