[One year ago](https://misapuntesde.com/post.php?id=207) I commented this protocol called *OBD* which you can test your car by connecting an adapter to your *Raspberry Pi*...
I've found a very easy manual for anyone by using a *Frontend*. Moreover, the price of the adapter is now much smaller than before and can connect using *Bluetooth* or *USB port*. It also has an SD image prepared for not complicate a lot. Better you see the video below and then jump to the link.
Link: [cowfishstudios.com](http://www.cowfishstudios.com/blog/obd-pi-raspberry-pi-displaying-car-diagnostics-obd-ii-data-on-an-aftermarket-head-unit)
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