Step 1: Material Required
1-piece of small wooden slab
some wire for connection
some adhesive ....to fix sensor's
Step 2: Fixing of Photo Sensor
Step 3: Connection
Step 4: Now Your Photodetector Is Ready
the led will automatically turn off due to intruption in light..... photodiode conductivity depends on intensity of light..
sorry for any mistakes ...
I can't be able to explain it's ...process