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.

Version Tracker

Features	V1.2	V2.0
CAN-BUS Controller	MCP2515	MCP2515
CAN Transceiver	MCP2551	MCP2551
Default OBD Pinout	OBD-II Standard	OBD-II Standard
CAN Standard Pinout	Not compatible	Compatible (jumper)
INT Pin	Not changeable	D2 or D3 (jumper)
CS pin for TF card slot	No TF card slot	D4 or D5 (jumper)
P1 pad	Front of the shied	Back of the shield
Serial Grove	D0/D1	A0/A1
I2C Grove	A4/A5	SDA/SCL
Grove Orientation	Vertical	Horizontal

Note:

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 UNO	Arduino Mega	Arduino  Leonardo
CAN-Bus Shield V2	Compatible	Compatible	Compatible

   

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