#include <SPI.h>
#include <RF24.h>
#include <nRF24L01.h>
int Trigger = 3;  // Sets Digital Pin D3 as the Trigger Input Pin. (External Button attached)

RF24 radio(7,8);   // Declaring CE and CSN pins.
const byte address[] = "Sensor1";  // Sets the Address of pipeline for sending the Data. This should be the same for both the transmitter and the receiver.
                                  
             
bool Trigger_Value ;  // the value returned by digitalRead(4) is stored here

void setup()
{
  Serial.begin(9600);
  
  radio.begin();  // Initializes the operations of the chip .
  radio.openWritingPipe(address);
  radio.setPALevel(RF24_PA_MIN);
  radio.stopListening();  // Starts sending the data through the above address pipeline . 
  pinMode(Trigger, INPUT); // Declares Trigger as an input.

}
                                                                          

void loop()
{
  Trigger_Value = digitalRead(Trigger);  // Stores the Trigger input value in the "Trigger_Value" variable.
  
  // Sending the "Trigger_Value" and Sizeof(Trigger_Value) Data to Receiver.
  radio.write(&Trigger_Value, sizeof(Trigger_Value));
  
  Serial.println("");
  
  Serial.print("Trigger_Value = ");
  Serial.print(Trigger_Value);
  Serial.print("      ");
  
  Serial.print("Size of Trigger_Value = ");
  Serial.println(sizeof Trigger_Value);
    
}

#include <SPI.h>
#include <RF24.h>
#include <nRF24L01.h>
#define Alarm D3  // Sets Digital Pin D3 as the Alarm Output Pin. 

//RF24 radio(7,8); // declaring CE and CSN pins for Arduino Boards
const byte address[] = "Sensor1"; // Sets the Address of pipeline for sending the Data. This should be same for both the transmitter and the receiver.

bool Trigger_Value = 0; // Stores the received data from the Transmitter that the Trigger gives.

void setup()
{
  Serial.begin(9600);
  
  radio.begin(); // Initializes the operations of the chip
  radio.openReadingPipe(0, address);
  radio.setPALevel(RF24_PA_MIN);
  radio.startListening(); // Starts receiving the data from the above address pipeline .
  
  pinMode(Alarm, OUTPUT); // declares Alarm as an output .
  
}


void loop()
{
  while(radio.available()){  

    // Receiving the "Trigger_Value" and Sizeof(Trigger_Value) Data from the Transmitter.
    radio.read(&Trigger_Value, sizeof(Trigger_Value)); 
    
    digitalWrite(Alarm, Trigger_Value);
    Serial.println("");
  
    Serial.print("Trigger_Value = ");
    Serial.print(Trigger_Value);
    Serial.print("      ");
  
    Serial.print("Size of Trigger_Value = ");
    Serial.println(sizeof Trigger_Value);
  }

}

#include <SPI.h>
#include <RF24.h>
#include <nRF24L01.h>
#include <ESP8266WiFi.h>

#define Alarm D3  // Sets Digital Pin D3 as the Alarm Output Pin. 

RF24 radio(2,4); // declaring CE and CSN pins for Node MCU
const byte address[] = "Sensor1"; // Sets the Address of pipeline for sending the Data. This should be the same for both the transmitter and the receiver.

bool Trigger_Value; // Stores the received data from the Transmitter that the Trigger gives.

void setup()
{
  Serial.begin(9600);
  
  radio.begin(); // Initializes the operations of the chip
  radio.openReadingPipe(0, address);
  radio.setPALevel(RF24_PA_MIN);
  radio.startListening(); // Starts receiving the data from the above address pipeline .
  
  pinMode(Alarm, OUTPUT); // declares Alarm as an output .
  
}


void loop()
{
   
  
  while(radio.available()){  

    // Receiving the "Trigger_Value" and Sizeof(Trigger_Value) Data from the Transmitter.
    radio.read(&Trigger_Value, sizeof(Trigger_Value)); 
    
    digitalWrite(Alarm, Trigger_Value);
    Serial.println("");
  
    Serial.print("Trigger_Value = ");
    Serial.print(Trigger_Value);
    Serial.print("      ");
  
    Serial.print("Size of Trigger_Value = ");
    Serial.println(sizeof Trigger_Value);
  }

}