/* Write a program to interface Light Dependent 
Resistor (LDR) and LED with Arduino board. 
Whenever there is sufficient light falls on LDR 
the LED is off and when there 
is dark around LDR the LED is put on. */


#include <Arduino.h>
#define ldrPin A5
#define led 7

void setup(){
  pinMode(ldrPin,INPUT);
  pinMode(led,OUTPUT);
  Serial.begin(9600);
}

void loop(){
  int readFromldr = analogRead(ldrPin);
  Serial.println(readFromldr);
  delay(2000);//1000 ms=1s
  if (readFromldr < 100){
    digitalWrite(led,HIGH);
  }
  else{
    digitalWrite(led,LOW);
  }
}