CANBed - Arduino CAN-Bus RP2040 development board

CANBed CAN Bus development board equipped powerful RP2040 has high-performance CAN controller and receiver operating at CAN 2.0 up to 133Mhz. It has flexible CAN interface which can be used as 4-PIN Terminal or D89 connector as OBD-II mode through a programmable Micro USB. 




  • Powerful Raspberry Pi RP2040 processor
  • Implements CAN V2.0B at up to 1 Mb/s
  • Industrial standard 9 pin sub-D connector or 4PIN Terminal.
  • OBD-II and CAN standard pinout selectable at the sub-D connector
  • 2x4Pin Connector compatible with Grove system from Seeedstudio
  • SPI Interface
  • Standard (11 bit) and extended (29 bit) data and remote frames
  • Power input from 9-28V


The CANBed RP2040 version has been changed from V1.0 into V1.1. For further information, please check here.

CANBed RP2040 is a CAN Bus development board equipped with an RP2040 chip with a high-performance MCP2515 CAN controller and MCP2551 CAN receiver operating at CAN2.0 protocols in 133MHz. The board contains a flexible CAN interface where it can be used 4-PIN Terminal or D89 connector. D89 connector can be directly used as OBD-II mode by default and the hardware can be configured as CAN Open mode as well. Additionally, it has a rich interface in which there is a Micro USB connector that can be programmed instead of supplying power. It also has I2C, UART, SPI, 3 analog input interfaces, and 8 digital IO with 2MB of Flash and 264KB of RAM which make it suitable for most embedded applications.

If you want to use this board to develop OBD-related applications, click to get a DB9 to OBD-II cable.

We use a flexible way for the CAN interface. You can use 4PIN Terminal or DB9 connector. DB9 connector uses OBD-II mode by default. You can also configure CAN Open mode on the hardware. The voltage input range of the CAN interface is 9-28V, which can provide a stable 3.3V/1A output.  


Parameter Value
MCU RP2040
Clock Speed flexible clock running up to 133 MHz
Flash Memory 2MB
Operate Voltage 9-28V
Output Current @ 3.3V 1A
Input Interface sub-D



  • Hack and Upgrade Your Car
  • Vehicle dynamics control system
  • Attitude and orbit control system


Hardware Pinout

1. GPIO - 9x2 I/O Pin OUT:
2. Micro USB connector for programming
3. SPI Interface
4. CAN RX/TX Indicator
5. DB9 connector or Terminal for CAN Bus
6. Switch for the 120Ω terminal resistor for CAN Bus
7. Grove connector for UART
8. Grove connector for I2C (Wire1)
9. Reset

CAN Bus Family in Seeed

CAN-BUS series product selection reference is provided here. The table compares NEW-Release LoRa-E5 CAN, CANBed v1, CANBed FD, CANBed M4, and CANBed RP2040 in terms of MCU, protocol, memory, and interface, etc.

Items LoRa-E5 CAN CANBed v1 CANBed FD CANBed M4 CANBed RP2040
MCU LoRa-E5 (STM32WLE5JC) ATmega 32U4 (with Arduino Leonardo bootloader) ATmega 32U4 (with Arduino Leonardo bootloader) ATSAME51 32bit Cortex M4 core RP2040
(Dual ARM Cortex-M0+)
Clock Speed up to 48MHz 16MHz 16MHz 120MHz up to 133 MHz
Protocol LoRaWAN,RS485,CANFD & CAN2.0 CAN2.0 CANFD & CAN2.0 CANFD & CAN2.0 CAN2.0
Flash Memory 256KB 32KB 32KB 512KB 2MB
SRAM 64KB 2.5KB 2.5KB 192KB 264KB
EEPROM - 1KB 1KB - -
Operate Voltage(CAN-BUS) 4.5~28V 9-28V 7-28V 7~28V 9-28V
Operate Voltage (MicroUSB) 5V 5V 5V 5V 3.3V
Lipo Battery 3.7V - - - -
Input Interface 9 pin sub-D or 4PIN Terminal 9 pin sub-D or 4PIN Terminal sub-D or 4PIN Terminal sub-D as well as Terminal sub-D
Price $39.90 $24.90 $17.90 $19.90 $15.90
Inventory status in stock out of stock in stock in stock pre-order

Part List

CANBed 2040 PCBA x1
Sub-D connector x1
4PIN Terminal x1
4PIN HY2.0 Connector x2
9x2 2.54 Header x1
3x3 2.54 Header x1
Switch for 120Ω terminal resistor x1


HSCODE 8517629900
USHSCODE 8471490000




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