embedded system,arduino,raspberry pi,msp430f169, ARM7

Thursday, March 21, 2019

On 9:03 AM by array operation   No comments

This project is IoT based home automation,which explains about ,how to google assistant can connected with node mcu and how it operate the LEDs.further project is connected with the relays and make fully automated home automations

Tuesday, March 19, 2019

On 2:40 AM by array operation   No comments

transmitter code:


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


RF24 radio(7,8); // CE, CSN       
const byte address[6] = "00001";     //Byte of array representing the address. This is the address where we will send the data. This should be same on the receiving side.
int button_pin = 2;
boolean button_state = 0;


void setup() {
  pinMode(button_pin, INPUT);
  radio.begin();                  //Starting the Wireless communication
  radio.openWritingPipe(address); //Setting the address where we will send the data
  radio.setPALevel(RF24_PA_MIN);  //You can set it as minimum or maximum depending on the distance between the transmitter and receiver.
  radio.stopListening();          //This sets the module as transmitter
}

void loop()
{
     button_state = digitalRead(button_pin);
    if(button_state == HIGH)
    {
      const char text[] = "Your Button State is HIGH";
      radio.write(&text, sizeof(text));                  //Sending the message to receiver
    }
    else
    {
      const char text[] = "Your Button State is LOW";
      radio.write(&text, sizeof(text));                  //Sending the message to receiver
    }
    radio.write(&button_state, sizeof(button_state));  //Sending the message to receiver
   // delay(1000);
}


receiver code:


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


RF24 radio(7,8); // CE, CSN
const byte address[6] = "00001";
boolean button_state = 0;
int led_pin = 5;

void setup() {
  pinMode(5, OUTPUT);
  Serial.begin(9600);
  radio.begin();
  radio.openReadingPipe(0, address);   //Setting the address at which we will receive the data
  radio.setPALevel(RF24_PA_MIN);       //You can set this as minimum or maximum depending on the distance between the transmitter and receiver.
  radio.startListening();              //This sets the module as receiver
}

void loop()
{
  if (radio.available())              //Looking for the data.
  {
    char text[32] = "";                 //Saving the incoming data
    radio.read(&text, sizeof(text));    //Reading the data
    radio.read(&button_state, sizeof(button_state));    //Reading the data
    if(button_state == HIGH)
    {
      digitalWrite(5, HIGH);
      Serial.println(text);
    }
    else
    {
      digitalWrite(5, LOW);
      Serial.println(text);}
    }
    delay(5);
}