Arduino based remote control

#include <SPIRremote.h>

SPIRrecv remote(9);

int ledpin = 3;

int irValue;

int i = 0;

void setup()

{

  remote.enableIR();

  pinMode(ledpin, OUTPUT);

}

void loop()

{

   int irValue = remote.getIRValue();

switch (irValue)

  {

    case 1:

    if(digitalRead(ledpin) == HIGH)

    {

      digitalWrite(ledpin,LOW);

    }

    else

    {

      digitalWrite(ledpin,HIGH);

    }

    break;

    }

    }

Micro pic

Using old camera lence I got this pic ...DIY

3 PIN TOP

You know why Earth pin in 3 pin top is larger than line and nutral?

Ans:
     When you plug in, Earth pin   first to connect,after that line and nutral connect, if any short circuit is in device Earth will helpful to trip.

Water level indicator

Project explanation

This water level indicator is very simple method with low cast This project to indicate the water level at dead low, medium and high level, when reaching high  level alarm sound will be activate