The Adafruit CAN Bus BFF is a compact add-on that brings CAN bus capabilities to any QT Py or Xiao board. Powered by the MCP26525 chipset with SPI interface, it provides better range and addressing than I2C, making it well suited for robotics and sensor networks. Drivers are available for both Arduino and CircuitPython.

The BFF form factor mounts directly onto the back of your QT Py or Xiao. A JST PH socket provides quick and easy wiring to the CAN bus, and a 120 ohm termination resistor is included on board with a cuttable jumper for removal.

Key Features

• MCP26525 CAN Controller – SPI interface with Arduino and CircuitPython support
• JST PH Socket – Quick connect/disconnect for CAN bus wiring
• 120 Ohm Termination – Onboard resistor with cuttable jumper for removal
• Pre-Connected CS Pin – Wired to A3 by default
• Optional Connections – IRQ, Reset, and Silent pins available for advanced use
• BFF Form Factor – Mounts directly on the back of any QT Py or Xiao board

Also Available

• Adafruit CAN Bus FeatherWing – CAN bus add-on for Feather boards with MCP2515 controller
• Adafruit CAN Pal – Transceiver-only breakout for boards with native CAN peripherals

Ideal For

• Robotics communication networks
• Sensor networks requiring better range than I2C
• Automotive and industrial CAN bus projects
• Compact QT Py-based CAN nodes

Package Contents

• 1× Adafruit CAN Bus BFF add-on board