4/7/2023 0 Comments Can bus sniffer open source![]() WARNING: Use at your own risk, sadly this software comes with no guarantees. This program is to demonstrate the CAN-bus capability of the mbed module. This can be used for datalogging while driving. Nameĭisplays output from the mbed module Name This is the workhorse of the project, placing the mbed's signals onto the OBD-II connector. This design uses the following connections: Connections for CAN Breakout ¶ These breakout boards utilize a DB9 to OBDII cable available from SKPang: There are several breakout board options for this library: Most cars after 2008 have CAN buses, with some cars after 2003 supporting them as well (source: ). This code does not output engine diagnostics on the test bed we were working with (2010 Toyota Corolla), as it was not returning a valid PID_REPLY (0x7E8), but others might find success with different cars. We were only able WRITE the standard OBD-II PID_REQUEST (0x7DF) to the CAN bus on a 2010 Toyota Corolla and READ back this data. We've expanded the libraries to include more OBD-II PIDs, which can be found here. This is an adaptation of SK Pang's ECU_Reader project which is used to read OBD-II codes. It comes AS IS with no guarantees that it will work. Notice: This code has not been fully tested. ![]()
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