This is a project to make a real time CAN packet monitoring system using Arduino and CAN BUS shield hardware. This makes a very affordable and reliable CAN packet monitor and injector.

• Arduino UNO

• CAN BUS Shield: Currently this project supports Can Bus Shield v1.1 product (http://www.jayconsystems.com/can-bus-shield.html). You can also purchase this from eBay.

• Probably other products will work without modification or minor tweak. We will add support for other products as we have access to them

• OBD-II to DB9 Cable: something similar to this https://www.sparkfun.com/products/10087

• USB to PC Cable to program and transfer serial data to and from Arduino

• Python 2.7.x: http://python.org
• Pyside: https://pypi.python.org/pypi/PySide (pip install pyside)
• PySerial: https://pypi.python.org/pypi/pyserial (pip install pyserial)

• First assemble your Arduino and CanBusShield, refer to your CanBusShield's manufacturer's manual for more details.
• Download Arduino Library from CanBusShield's vendor site.
• For example, for the JayCon product, I could download it from http://www.jayconsystems.com/fileuploader/download/download/?d=0&file=custom%2Fupload%2FFile-1363136372.zip. But, you need to modify the code to gather raw packets.
• The "CANBridge\Arduino Library" folder contains the library for JayCon product. It has some modifications in the code to support raw level packet collection.
• If you want to support your board, you should go through similar code change. To get some idea how you modify your library code, please look at these changes: https://github.com/ohjeongwook/CanBusHacker/commit/36e3019e95acba9e92f10366f415be9ebad8a710
• Next, import the library using the method described here: http://arduino.cc/en/guide/libraries
• Open CanBridge.ino file, compile and upload to your device

This program is for Windows that communicates with Arduino board through serial port. Probably you can use this code on Linux or OSX with minor changes.

• Install dependencies and run CanBusHacker.py.
• Now connect your Arduino device to your laptop.
• Connect your OBD-II cable to your car
• Select Arduino -> Start Capture menu. You need to select serial port that is connected to your Aruino and need to specify output database file.
• If you didn't start your engine, now is the good time to start it, you will see various packets coming up
• The database file format is SQLite and you can open it up later using File -> Open Log menu.