CAN-BUS Shield V2

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CAN-BUS is a common industrial bus because of its long travel distance, medium communication speed and high reliability. It is commonly found on modern machine tools and as an automotive diagnostic bus. Thanks for CAN-BUS, makers are able to hack their cars more conveniently. In order to make it more convenient to interact with cars, we released the CAN-BUS Shield which adopts MCP2515 CAN-BUS controller with SPI interface and MCP2551 CAN transceiver to give you Arduino/Seeeduino CAN-BUS capability.

Previously we have made two versions of CAN-BUS Shield, the V1.0 and V1.2. They are all awesome shields that widely liked by our users. In order to make it better, several months ago we conducted a survey about CAN-BUS Shield V1.2 and received many valuable advices (Thanks to all the users who replied to us), so we decided to make an update and here it is - CAN-BUS Shield V2.

The CAN-BUS Shield V2 still uses MCP2515 as CAN-BUS controller and MCP2551 as CAN transceiver. Despite of that, there are really many updates. First and most importantly, OBD-II or CAN standard pinout can be selected by switching jumpers on DB9 interface, the default pinout is OBD-II. Secondly we add a TF card slot for data storage and the CS pin can be either set to D4 or D5. The INT pin can also be set to D2 or D3 by switching jumpers on the back of the shield. If you want to use more than 2 CAN-BUS Shield, it is needed to cut P1 pad. In V2, we moved the P1 pad from front to the back of the shield to make it easier to cut and solder. All in one, there are more options for customization.

Consider that the D0/D1 pin are usually used for downloading code, we changed the serial Grove connector to pin A0/A1. The I2C grove connector is also changed to more reasonable standard SDA/SCL pin instead of previous A4/A5. The two grove connectors are both changed to horizontal rather than vertical to the shield so that it would be more convenient when connecting to other grove modules.

Alternative Choice

If your project is space limited, here is a Serial CAN-BUS module which has the full features of CAN Bus. The Serial CAN-BUS provides your Arduino or others MCU with the capability to communication to CAN Bus, such as hacking your vehicle. This Grove CAN-BUS module is controled by UART, that means if your MCU has a UART interface, this serial CAN BUS is available. Good news is that this Serial CAN BUS module needs only $14.9



  • Implements CAN V2.0B at up to 1 Mb/s

  • Industrial standard 9 pin sub-D connector

  • OBD-II and CAN standard pinout selectable.

  • Changeable chip select pin

  • Changeable CS pin for TF card slot

  • Changeable INT pin

  • Screw terminal that easily to connect CAN_H and CAN_L

  • Arduino Uno pin headers

  • 2 Grove connectors (I2C and UART)

  • SPI Interface up to 10 MHz

  • Standard (11 bit) and extended (29 bit) data and remote frames

  • Two receive buffers with prioritized message storage

Version Tracker

CAN-BUS ControllerMCP2515MCP2515
CAN TransceiverMCP2551MCP2551
Default OBD PinoutOBD-II StandardOBD-II Standard
CAN Standard PinoutNot compatibleCompatible (jumper)
INT PinNot changeableD2 or D3 (jumper)
CS pin for TF card slotNo TF card slotD4 or D5 (jumper)
P1 padFront of the shiedBack of the shield
Serial GroveD0/D1A0/A1
Grove OrientationVerticalHorizontal


CAN BUS Shield Work well with Arduino UNO (ATmega328), Arduino Mega (ATmega1280/2560) as well as Arduino Leonardo (ATmega32U4) and LinkIt One, if you want to use it with the others board, please contact us for more details.

Arduino UNOArduino MegaArduino Leonardo
CAN-Bus Shield V2CompatibleCompatibleCompatible

If you want a CAN Bus function for others mcu, please try Serial CAN-BUS module.

Technical details

Dimensions 74.8mm x53.4mm x27.1mm
Weight G.W 48g
Battery Exclude

Part List

CAN-BUS Shield V2 1


HSCODE 8543909000

Volkswagen CAN BUS Gaming

Ever wanted to play a car/truck simulator with a real dashboard on your PC? Me too! I'm trying to control a VW Polo 6R dashboard via CAN Bus with an Arduino Uno and a Seeed CAN Bus Shield. Inspired by Silas Parker. Thanks to Sepp and Is0-Mick for thei

CAN-BUS Shield V2

Wiki of CAN-BUS Shield V2

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