Buttons for different display modes

Using Arduino Project Guidance
19

Yep, Works Great now :slight_smile:

My next step is going tobe doing temps.

Just had a bit of an idea today, How hard would it be to:

  1. Make the Arduino Switch a relay when a voltage is reached in the primary battery.
  2. The Arduino knows when I have the car on.

Im guessing for 1 ill have to tell it something along the lines of, When Primary = (desired voltage), Output on an analog or digital pin?

and for 2 just have a voltage comes onto a pin and the arduino can read that ?

Cheers