Its a mistake, it is for GRID.
You can do also test with GRID2. Sorry
My first program for real Instrument Clusters (BMW e36 tested) is ready for you.
The program used to operate a speedometer in a very simple manner.
Arduino connect with tachometer according to the instructions and connect in the program.
It may still 2 pots and 2 switches are configured as an input device.
Rpm, Speed, kmh, Gear and Temp as Output
2 x Poti, 5 Buttons as input (handbrake, horn ...)
Use SERVOS, LCD, TFT, LED, BUTTONS, e.g. whatever you you can connect with your Arduino
video show last test with rcc and Project Cars. Other Games work also
Update 220.127.116.11 support
Assetto Corsa, Dirt3, Dirt Rally, Euro Truck Simulator 2, GRID Autosport, Live for Speed, Project Cars, RaceRoom Racing Experience