else //if LDR_value value is high that means its bright outside so LED should be turn off digitalWrite(LED, LOW);//turn off the LED Serial.println("its bright turn off the LED");// display "its bright ...

Circuit Diagram . Code and Explanation. The complete Arduino code for Automatic LED dimmer is given at the end.. In the below code, we are defining the PWM pin and the variables to be used in the code ...

It’s like Dark and light Detector circuit but this time we are using Arduino to get more control over light. In this circuit, we are making a Light Sensor using LDR with Arduino to control a bulb/CFL ...

DC motor speed control circuit. The circuit uses a small LDR, ... Readings from the LDR are taken by analogue pin A0 using a voltage divider circuit consisting of 10k resistance and LDR connected at ...

else //if LDR_value value is greater than 300 that means its bright outside so LED should be turn off digitalWrite(LED, LOW); //turn off the LED Serial.println("its bright turn off the LED"); // ...