Max7221 gear shift readout

Hi guys,

trying to add the gear shift option to the use the Max7221. Im using an E36 BMW cluster connected to a UNO and it works fine, but would like to add the code for the gear shift. Can anyone point me in the right direction of how to add it to the sketch?


Is this on or off the car?

I assume on the car , you may need to get the signal from Canbus , or look at the bmw forums for advice, , might need ECU coding changes ?

You need to research that issue first .

Sorry i should have been clearer. Its a dash off the car, so it working with my racing sim.