Experimental Procedure

Took a ruler and place it in front of the sensors in which a object was placed in front of the sensor gradually moving it. The five measured points are moving 20, 30, 40, 50 and 60 cm.

We placed the sensor with a light source (Aputure AL-M9) in a dark box and each button pressed the light increases but the resistance decrease. The values where showing a inversely proportional graph. We tested the resistance with 5 steps on the light source.