PiCAN2 Duo CAN Bus HAT for Raspberry Pi 4 With 3A SMPS

Product Description

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The PiCAN2 Duo board brings dual CAN‑Bus connectivity to your Raspberry Pi 4, enabling two independent communication channels on the same system. Built around the trusted Microchip MCP2515 CAN controllers and MCP2551 transceivers, each channel supports CAN 2.0B data rates up to 1 Mb/s over a high-speed SPI interface. Connections are made through a 4‑way screw terminal, providing a clean and secure wiring solution for each bus line.

What distinguishes this version is the integrated 5 V / 3 A switch‑mode power supply (SMPS), capable of accepting input voltages between 7 V and 24 V. This onboard regulator can power both the PiCAN2 Duo board and the Raspberry Pi 4 via the same terminal block, ensuring a streamlined setup without requiring extra power cables. The SMPS includes reverse‑polarity protection and efficient power conversion, making it suitable for industrial and automotive environments.

The board includes two 120 Ω termination resistors—one per CAN channel—and provisions for serial LCD modules. LED indicators for each channel provide real-time visual feedback. With four mounting holes compliant with the Raspberry Pi HAT standard, the PiCAN2 Duo sits securely atop your Pi. Interrupt outputs are available on GPIO25 and GPIO24 for both channels, enabling event-driven software handling and minimizing CPU load.

Software setup is straightforward: once SPI is enabled on Raspberry Pi OS, the SocketCAN driver installs easily and exposes the two interfaces as can0 and can1. From there, developers can write CAN applications in C or Python, allowing for fast deployment in automotive diagnostics, industrial automation, or robotics projects where dual-bus communication is critical.

Features

CAN v2.0B at 1 Mb/s
High speed SPI Interface (10 MHz)
Standard and extended data and remote frames
CAN Bus connection screw terminal
120 Ω terminator ready
Serial LCD ready
LED indicator
Four mounting holes, compliant with Pi Hat standard
SocketCAN driver, appears as can0 and can1 to application
Interrupt RX on GPIO25 and GPIO24
5VDC 3A SMPS to power Raspberry Pi and accessories from screw terminal

Reverse polarity protection
High efficiency switch mode design
7VDC to 24VDC input range

Documents

Programming the Raspberry Pi - Getting Started with Python

Learn to create inventive programs and fun games on your powerful Raspberry Pi―with no programming experience required. This practical book has been revised to fully cover the new Raspberry Pi 2, including upgrades to the Raspbian operating system.

Discover how to configure hardware and software, write Python scripts, create 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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