2-Channel CAN-BUS(FD) Shield for Raspberry Pi

This shield is a 2-Channel CAN-BUS(FD) Shield for Raspberry Pi (MCP2518FD), supports the CAN FD protocol and supports transmission speed up to 8 Mbps.

The 2-Channel CAN-BUS(FD) Shield for Raspberry Pi (MCP2518FD) is unique: it supports CAN FD! CAN FD (CAN with Flexible Data-Rate) protocol is an upgraded version of the traditional CAN BUS that increases the CAN’s transmission rate from 1Mbps to 8Mbps. At the same time, CAN FD improves real-time performance and extends user data frames, providing higher efficiency.

Features

• Support CAN FD
• Supports Raspberry Pi and Jetson Nano
• High-speed transfer rate: 8Mbps@10m 20AWG shielded cable / 1Mbps@40m 20AWG shielded cable
• Stable power supply, selectable Raspberry Pi power supply or DC power supply
• One-button configuration of 120Ω terminating resistor

The board is based on the MCP2518 CAN FD Controller and MCP2557 CAN FD Transceiver which communicates with Raspberry Pi via the high-speed SPI interface.

You can power this shield via your Raspberry Pi’s 40 pin header, or you can use the 12-24V DC screw terminal to supply the power for the whole system. To ensure the stability of communication, Seeed Studio used high-quality Panasonic capacitors and TI power chips, along with quality circuit design, to build a stable power management system, which provides stable 3.3V and 5V power supply for all parts of the system.

As you may know, the devices at both ends of the CAN BUS need a 120Ω terminating resistor to avoid reflection. With the help of an onboard 120Ω resistor to enable switch, you can easily toggle the onboard resistor on and off. Additionally, two Grove I2C connectors are available in case you need to work with more Grove modules.