Design and Methodology

Transmitter

#include <SPI.h>

#include <nRF24L01.h>

#include <RF24.h>

const uint64_t deviceID = 0xE8E8F0F0E1LL;

RF24 radio(9,10);

int elephant = 0;

void setup() {

// put your setup code here, to run once:

radio.begin();

radio.setChannel(9);

radio.openWritingPipe(deviceID);

pinMode(4, INPUT); //red

pinMode(3, INPUT); //yellow

pinMode(2, INPUT); //green

Serial.begin(9600);

}

void loop()

{

//Serial.println("abc");

if (digitalRead(4)== HIGH)

{

elephant=12;

}

else if(digitalRead(3)==HIGH)

{

elephant=5;

}

else if(digitalRead(2)==HIGH)

{

elephant=2;

}

Serial.println(elephant);

radio.write(elephant, sizeof(elephant));

}

Reciever

#include <SPI.h>

#include <nRF24L01.h>

#include <RF24.h>

const uint64_t deviceID = 0xE8E8F0F0E1LL;

RF24 radio (9,10);

int rocket;

int red = 4;

int yellow = 3;

int green = 2;

void setup()

{

pinMode(4, OUTPUT); //red

pinMode(3, OUTPUT); //yellow

pinMode(2, OUTPUT); //green

radio.begin();

radio.setChannel(9);

radio.openReadingPipe(1,deviceID);

radio.startListening();

Serial.begin(9600);

}

void loop()

{

//if (radio.available()){

radio.read(&rocket, sizeof(rocket));

//Serial.println("def");

Serial.println(rocket);

delay(500);

if (rocket == 12)

{

digitalWrite (yellow, LOW);

digitalWrite (green, LOW);

digitalWrite (red, HIGH);

}

if (rocket == 5)

{

digitalWrite (red, LOW);

digitalWrite (green, LOW);

digitalWrite (yellow, HIGH);

}

if (rocket == 2)

{

digitalWrite (red, LOW);

digitalWrite (yellow, LOW);

digitalWrite (green, HIGH);

}

//}

}