The circuits I have tried have only yeilded a output voltage change from .2V to .5V Any help would be appreciated. I am attaching the circuit that I have tried to use and also the data sheet for the sensor that I am using.
I don't see anything wrong with the test schematic. Your drive LED bias current is fine. The collector load is fairly high, so you shouldn't have a gain problem. It should switch between 0 and 5 volts. You may have these problems:
- incorrect wiring of components
- too much light entering the sensor at all times. Try blocking all light from the sensor to see if the transistor will then switch off.