Pardon my ignorance in electronics and point me to a resource where I can find the answer if this question is utterly low ball for this forum.
I know that the Pilot has 5 possible voltage states. 12,9,6,3 and -12 (diode check model). I know that resistors R5,6 and 7 handle a < 5V to the ADC1 pin on the Arduino.
Without an actual test set in place and purely napkin stats I am trying to figure out what voltages should be expected @ the ADC1 pin.
Using simple voltage divider logic and ignoring R5, the voltages I should expect are approx 9,7,5, 2 and 0 @ ACD1. But these are still high for ACD1 and R5 has a role to play.
With R5 in play, what are my voltages? Ideally how do I place R5 into the divider formula so that I can handle future projects with this circuitry.
Here is a link to the "Theory of Operations" https://openev.freshdesk.com/a/solutions/articles/6000052070