I'm on voltage dividers circuits for reading some sensors that changes their resistance (force sentive resistor).
With my tester (with input scale set on 200K ohms) I read 23 if sensor is not touched and 65 if the sensor is touched at maximum.
Now, I'm trying to read it with a microcontroller and with a 220 ohms resistor (red red brown) i read values from 7 (not touched) to 1 (touched). With a 1000 ohms (brown black red) i read values from 40 (not touched) to 15 ( touched).
I would like to get the best from this sensor and this microcontroller (it could read analog values from 0 to 1023) and I want to calculate the best resistor for get the best result and the biggest range of values i can.
Can someone point me out?