MicroMod CAN Bus Function Board

The MicroMod CAN Bus Function Board adds Controller Area Network (CAN) connectivity to any MicroMod project. It pairs an MCP2515 stand-alone CAN controller with an MCP2551 high-speed transceiver, supporting CAN V2.0B at up to 1 Mb/s with up to 112 nodes on a single bus.

Two CAN connectors are provided: a 2-pin screw terminal for CANH/CANL and a D-sub connector for OBD-II-to-DB9 cables. Solder jumpers on the underside allow you to bypass the MCP2515 (if your processor has a built-in CAN controller), change the D-sub pinout for compatibility with third-party cables, and enable the built-in 120 Ω termination resistor.

Key Features

• MCP2515 CAN Controller – CAN V2.0B at 1 Mb/s with high-speed SPI interface (10 MHz)
• MCP2551 CAN Transceiver – Supports up to 112 nodes at 1 Mb/s
• Dual CAN Connectors – 2-pin screw terminal and D-sub (DB9) connector
• Configurable Solder Jumpers – CAN controller bypass, DB9 pinout selection, and 120 Ω termination
• Bus Voltage Detection – MOSFET on DB9 bus-voltage pin for host power sensing
• MicroMod M.2 Interface – Swappable processor and carrier board ecosystem

Ideal For

• Vehicle OBD-II diagnostics and data logging
• Industrial CAN bus monitoring and node development
• Building automation and lighting control networks
• Custom CAN network prototyping

Resources

• Schematic (PDF)
• Eagle Design Files
• MCP2515 Datasheet
• MCP2551 Datasheet
• Arduino CAN Library
• GitHub Hardware Repository