Light Sensor Circuit On Breadboard. Cover the light sensor and the led eyes light up. Connect pin 8 of the ic to positive rail pin 1 of the ic to negative rail.
Things needed ldr l e d breadboard and 9v battery. Notice that the led diode d 1 is reverse biased i e. Whenever light is focused on.
Opposite to how it would be connected as a light emitter.
Connect pin 8 of the ic to positive rail pin 1 of the ic to negative rail. Put wires across emitter pin of both transistors and ve terminal of battery lowest bottom row of breadboard step 4. On your solder less breadboard construct the led light sensor circuit as shown in figure 1. It senses the presence of darkness with the help of the ldr.
