A circuit that turns on the flow of current in a circuit during the dark time. Through this sensor, you can also make your lights automatically on/off.
What is Dark Sensor Circuit?
A dark Sensor is such type of sensor which activates the circuit when darkness occurs. This sensor circuit contains an LDR which means Light Depending Resistance. This LDR Resistance is based on the strength of light when light falls on it decreases the resistance that allows the current to flow through it.
Generally, this sensor is used in street lights as they get ON during the nighttime. This dark Sensor is also used in many robotics projects.
Components Required-
2x 2n2222a Transistor
1k Resistance
10k Resistance
LDR
LED
