PiCAN2 DUO SMPS User Guide V1.4

Overview

This document provides comprehensive instructions for the PiCAN2 DUO SMPS board, designed to add two independent CAN-Bus channels to the Raspberry Pi 4. It utilizes Microchip MCP2515 CAN controllers and MCP2551 CAN transceivers, offering versatile connectivity via screw terminals. The board features an integrated 5V 3A SMPS for powering the Raspberry Pi and accessories.

Key Features

• Dual independent CAN-Bus channels (CAN v2.0B at 1 Mb/s)
• High-speed SPI Interface (10 MHz)
• Support for standard and extended data and remote frames
• Easy CAN connection via 4-way screw terminals
• On-board 120Ω terminator ready
• Serial LCD support
• LED indicator
• Raspberry Pi HAT standard compliance with four fixing holes
• SocketCAN driver compatibility (appears as can0 and can1)
• Interrupt RX on GPIO25 and GPIO24
• Integrated 5V 3A SMPS with reverse polarity protection
• Wide input voltage range (7V to 24V) for SMPS

Getting Started

The guide covers hardware installation, software setup using SocketCAN drivers, and provides examples for programming applications in both C and Python. Users can find detailed instructions on configuring the Raspberry Pi, installing necessary utilities, and sending/receiving CAN messages.

For software setup, refer to the official Raspberry Pi OS downloads: Raspberry Pi OS.

Python-CAN library can be downloaded from GitHub.

C example source code is available at skpang.co.uk.