//KY018 Photo resistor module int sensorPin = A5; // select the input pin for the potentiometer int ledPin = 13; // select the pin for the LED int sensorValue = 0; // variable to store the value coming from the sensor void setup() { pinMode(ledPin, OUTPUT); Serial.begin(9600); } void loop() { sensorValue = analogRead(sensorPin); digitalWrite(ledPin, HIGH); delay(sensorValue); digitalWrite(ledPin, LOW); delay(sensorValue); Serial.println(sensorValue, DEC); }