CAN Protocol Implementation using Arduino

Project Requirements:

Before starting with the project, we should have a thorough knowledge of the concepts of CAN Design and CAN bus Protocols. The CAN Bus has two wires that is CAN high and CAN low. In application They are designed robust, the wires are normally shielded. The CAN respond and send messages is quite easy. The message generally contains a identifier and data. The identifier is known as CAN ID or PGN. The length of the identifier is either 11 or 29 bits to length. The data can be from 0 to 8bytes in length. Following are the components for the project:
1. Arduino UNO R3:Used for processing all the data in the system to give the necessary output.
2. Sparkfun CAN Bus Shield:This shield allows you to poll the ECU for information including coolant temperature, throttle position, vehicle speed, and engine rpms. You can also store this data or output it to a screen to make an in-dash project.
3. Wire pair for OBD-II to DB9: the cable allows to access the pin on OBD-II on a vehicle connected to it.

Project Implementation:

1. Connect the Arduino UNO R3 Board to CAN Bus Shield.
2. Once assembled download the CAN BUS library in Arduino IDE.
3. Initialize the CAN Bus Shield.
4. Once initialized read CAN bus Messages.
5. Filter the messages to get the important data.
6. And display the data on screen using Write command.
7. Once done connect to your car OBD-II and check that data based on the actions performed in vehicle.

Software requirements:

1. Arduino IDE:software used for dumping firmware that was created for the Arduino Board to control the CAN Bus data.

• CAN Protocol
• Arduino
• OBD II Cable

• CAN Protocol
• Arduino
• OBD
• Safety