Have an older, pre-OBD-II car, but still want a fancy data screen? DIYer 240SF on YouTube figured out how to use a Raspberry Pi to add a digital display to an older Nissan with a consult port, which can likely be applied to a number of different systems.
http://lifehacker.com/how-to-unlock-…
The dash displays live speed, RPM, and coolant temperature. In this case, it grabs data from the Nissan’s Consult port, runs it through the software, then displays it on the Pi-powered screen. As it stands, this is written specifically for those special Nissan-specific ports, but the concept is adaptable to something else provided you can handle rewriting the JavaScript file on GitHub. Of course, there are plenty of other ways to do this if this one doesn’t work for you.
Under $US170 ($222) Digital Dash [YouTube via Hackaday]
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