Hello Brandon! Thank you for your answer. Yesterday I was not quite right in my hurry.
I use the Pololu with the feedback method and a steering angle sensor (Hall sensor) which outputs 0.5 - 4.5 v. I used the analog feedback. i am able to control my 200 ps tractor so well.
other farmers have tractors with a pre-fitted steering angle sensor. That means the sensor is installed with the tractor electronics. some also use a sensor with 2 outputs which the tractor electronics then compares to safety.
if I read such a sensor with an arduino (I know that from feedback) the tactor will give a disturbance because the arduino has some power for the measurement.
in this case we use an ads1115 which does not make these problems here.
the ads1115 make a differential voltage measurement. That is to say, you will need to make a measurement where neither side of the measurement is at the Arduino ground potential.
my question is: can you tell me how the pololu reads out the analogue values?