This demo is not while driving on track so I had to chose some data in Racechrono that would be live even on the test bench so I chose magnetometer. But you can chose any OBD2 data, any laptiming data, GPS, CAN, yeah ANY data Racechrono collects is available to collect live over BLE Bluetooth while out on the track.
You can put data up on a screen, send it over internet or whatever you fancy. A large monitor with drive train vitals and the current sector times in the pits? An alarm that goes of in the car or in the pits if the oil or tire temps are too high? An automatic email sent to your friends each time you set a new track PB hehehe.
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https://www.youtube.com/watch?v=f61Pw1ZjPyw