Hi Ron and Bob,
Thanks for the quick responses!
The microcontroller is a Highly liquid midi unit.
I want to use one of the analogue inputs which will accept 1k to 10k variable resistor, which when varied, will control volume or pitch.
The variable resistor I have will measure up to 4 ohms (I am seeking a higher value for the material I am working with), but wondered if there was a solution in electronics by , in effect amplifying or "stepping up" the resistance,in the same way a darlington pair amplifies a signal. maybe voltage divider, a wheatstone bridge or some other mechanism that gets me to use the analogue range of the midi controller.
I am stuck with the material I am working with (it has other properties apart from its electrical resistance).
Thanks for your input, much appreciated.