Paul_KD7HB:
Your intent really confuses me. You complain about the old stuff being unreliable and then want to use the same unreliable input and output, and then add an Arduino to the mix. How will the Arduino make it all better?Paul
The plan is also to replace the oil and temp sending units, as well as a brand new wiring harness for the gauges to eliminate old corroded wires as possible noise. Sorry for not mentioning.
Additionally, is largely the mechanism that causes old gauges to be unreliable. In my instance, it's bimetallic strip that uses the variance in current (caused by the change in resistance at the sensor) to heat the bimetallic strip.
DVDdoug:
Standard stepper motors are 200 steps per revolution (1.8 degrees per step) so they don't move smoothly. You can [u]microstep[/u] them, but I don't know how well that works on the Arduino or if you'd be "pushing it" if you tried to microstep multiple motors at once.
Suppose I should have mentioned, the motors list 600 steps for a roughly 315* arc, so each step is 0.52*. In theory, if I were to microstep by 1/8 I should get 3000 steps, and for the 315* arc each step would be 0.1*, right?
-Jameson