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Green rectangular PCB with RP2040 chip, DB9 and terminal connectors, micro USB, pin headers

Seeed Studio

Seeed Studio CANBed RP2040 CAN Bus Development Board

SKU CH-PRJQ-KWQ6V

CAN Bus development board with RP2040 processor, MCP2515 controller, and MCP2551 transceiver operating at 133 MHz with 2 MB flash and 264 KB RAM

  • TypeSensors
  • RP2040 dual-core MCU runs at 133 MHz for fast embedded tasks
  • MCP2515 controller and MCP2551 transceiver deliver CAN 2.0B at 1 Mb/s
  • DB9 connector switches between OBD-II and CANopen pinouts without rewiring
  • 9–28 V input feeds on-board 3.3 V / 1 A regulator for stable logic supply
  • 2 MB flash and 264 KB RAM plus I²C, UART, SPI and Grove headers expand I/O options

CAN Bus development board with RP2040

The CANBed RP2040 is a development board built around an RP2040 processor paired with an MCP2515 CAN controller and MCP2551 transceiver. It supports CAN V2.0B communication at up to 1 Mb/s using both standard 11 bit and extended 29 bit frames. The board targets engineers and hobbyists developing automotive diagnostics, industrial automation or embedded CAN applications.

Flexible connectivity for embedded builds

A DB9 sub-D connector provides selectable OBD-II or CAN Open pinouts while a 4-pin terminal block offers an alternative wiring option. Two 4-pin Grove-compatible connectors expose I2C, UART, SPI, three analogue inputs and eight digital I/O pins. Power is supplied through a 9 V to 28 V input range that feeds an onboard regulator delivering 3.3 V at 1 A, and a Micro USB port handles programming without powering the board.

Thermal and power characteristics

The board draws power from the 9 V to 28 V supply rail and regulates it to 3.3 V for the RP2040 and CAN transceiver. No active cooling is present; heat dissipation relies on the PCB copper and component packages. Operating current depends on the attached peripherals and CAN bus load, while the Micro USB interface remains electrically isolated from the main power path during development.

Highlights

  • RP2040 dual-core MCU runs at 133 MHz for fast embedded tasks
  • MCP2515 controller and MCP2551 transceiver deliver CAN 2.0B at 1 Mb/s
  • DB9 connector switches between OBD-II and CANopen pinouts without rewiring
  • 9–28 V input feeds on-board 3.3 V / 1 A regulator for stable logic supply
  • 2 MB flash and 264 KB RAM plus I²C, UART, SPI and Grove headers expand I/O options

Specifications

TypeSensors

Questions about this item

What is the maximum CAN bus speed this board can sustain?

The MCP2515 controller implements CAN V2.0B at up to 1 Mb/s.

How much power does the board draw and how hot does it get during continuous operation?

The board accepts 9-28 V input and regulates a stable 3.3 V at up to 1 A for the RP2040 and CAN transceiver.

Which cables or adapters must I already have to start developing with the DB9 port?

The DB9 connector uses OBD-II pinout by default; a DB9-to-OBD-II cable is required for vehicle diagnostics.

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