LDR light controller using arduino mega

This is a series of simple projects aimed at getting started with Arduino. This will cover most of the important peripherals of the Arduino starting from simple Digital I/Os to ADC and communication interfaces etc.


In the first set of projects the following are included. They are basically about the Digital I/Os and ADC on the arduino.

2.LED ON using push button
3.AC BULB ON using push button
4.Running LED'S
5.Running LED'S when button pressed
6.LED ON/OFF using two buttons
7.LED BLINK with adjustable delays
8.POTENTIOMETER as ADC input display serial monitor
9.LDR light controller
11.Temperature controller

In this experiment we are going to see 

LDR light controller:

connect the LDR as analog input to the pin A0. 

and the AC bulb using a relay which is connected to pin 50 and 5V power supply and ground.

when the room is dark the AC bulb turns on or else the bulb turns off