Circuit Description The LDR is configured in a voltage divider circuit to provide analog input to the Arduino. As light intensity changes, the voltage at the analog pin (A0) varies accordingly. The ...

LDR-with-LED-Arduino-UNO- Arduino UNO is used to make automatic Street Light Mechanism. One End of LDR is attached to 5V on Arduino while the Second leg is attached to a Resistor and a Jumper Cable in ...