LDR - Light Dependent Resistor/Photoresistor

Photoresistor with NPN Transistor

A sensor that changes its resistance when light shines on it.

• make a 15 K ohm resistor with 10K and 5 K in series
• Use any NPN transistor
• Replace LED with an Active Buzzer

https://www.tinkercad.com/things/f3NZXbI6XFk-ldr-photoresistor-npn-transistor-