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In this instructable I'm going to show you how to build a IR signal Jammer, which is a fun weekend project and is great to prank a friend or your family. How the circuit works is it captures the infra red code from your TV remote and then sends mixed signals back to the TV, therefore jamming the original signal from the remote.

So have fun....

Step 1: Requirements

Here is the list of components required for the project -

  • LinkIt One
  • Battery
  • Micro USB
  • IR reciver
  • IR LED
  • Breadboard
  • Some Jumper wires

Step 2: Circuit

The circuit can be found above and is really simple to assemble. No soldering skills are required as we are using a breadboard. You need to update the on board firmware before uploading the code to the LinkIt One board.

Step 3: Code

The code can be found below and to upload the code you require the Arduino IDE with the linkit one pluggin. There are a lot of tutorials on instructable that show you how to do that. Make sure you select the right port to upload the code.

<p>#include   <br>
int STATUS_PIN = 13;
int BUTTON_PIN = 12;
int RECV_PIN = 11;</p><p>IRrecv irrecv(RECV_PIN);
IRsend irsend;</p><p>decode_results results;</p><p>void setup()
{
  Serial.begin(9600);
  irrecv.enableIRIn(); // Start the receiver
  pinMode(BUTTON_PIN, INPUT);
  pinMode(STATUS_PIN, OUTPUT); 
  randomSeed(analogRead(0)); 
}</p><p>void loop() {
  if (irrecv.decode(&results)) {
    digitalWrite(STATUS_PIN, HIGH);
    Serial.println(results.value, HEX);
    for (int i = 0; i < random(3,10) ; i++) {
// Change the method below and its two parameters based on the output of theIRrecvDump.ino sketch.
       irsend.sendNEC(0x80BF4BB4, 32); 
    // sendNEC(unsigned long data, int nbits)
    // sendSony(unsigned long data, int nbits)
    // sendRC5(unsigned long data, int nbits)
    // sendRC6(unsigned long data, int nbits)
       delay(100);
    }   
    digitalWrite(STATUS_PIN, LOW);
    irrecv.enableIRIn();
    irrecv.resume();
  } 
}</p>
<p>I've only ever heard of an RF jammer, so this is really cool! </p>

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