Senior Project…..finally working.

A long time coming, I finally sat down in the lab the last few weeks and hammered out the main sensor circuit for our senior project. After experimenting with many filter circuits, amplifiers, and even wiring schemes, I finally got a circuit to amplify the signal generated by the eye to a usable voltage level(around 3000 gain, ~2V). Among the pictures in the gallery, you’ll see the seemingly simple circuit, Eric hooked up to it(he survived), and the oscilloscope output. The output represents the derivative of the eye movement, in that particular case, Eric is moving his eye left to right every second or so.