The pot is being used to replace a mechanical pot. (Accuracy and repeatability of the mech pot was unsatisfactory.) The pot is used to generate an input signal to an ATTiny85 chip that provide a PWM style speed control to a small DC motor. In essence, it is acting as a voltage tap. The ATTiny85 compares the wiper voltage to system voltage to generate the pulse width parameters.
The in-use process goes something like this.
1. The pot wiper position is set. (This is the point that I want to monitor)
2. The pot is then connected to the ATtiny85 and the 85 is energized. (No monitoring)
3. The 85 reads wiper voltage/position and stores the value.
4. The pot is then disconnected.
The pot's resistor element's wiper is not being 'used' for anything during the process of setting it (step 1 above) therefore reading volts, or resistance, at the resistor endpoint and at the wiper should be possible. Monitor after the pot is connected to the 85 chip would be worthless even if it was possible. The readings at that point would be ATtiny85 condition, not the pot.
Ideally, I would like have indication of the pot's wiper position, either as an absolute value or as ratio of wiper position to total travel. The first step is to find (learn about) a display system (display and driver) that meets the small size and simplicity restrictions that are due to circuit board size and my lack of knowledge.
Again, all comments and suggestion are greatly appreciated.
GH