Nodemcu code: #include <ESP8266WiFi.h> #include "Adafruit_MQTT.h" #include "Adafruit_MQTT_Client.h"

#define Automated D0 #define Led D1 #define Fan D2

#define WLAN_SSID "JioFi2_1EAFF8" #define WLAN_PASS "Ode9c@,1S%31ja$1xANkeL"

#define AIO_SERVER "io.adafruit.com" #define AIO_SERVERPORT 1883 #define AIO_USERNAME "_inishu" #define AIO_KEY "aio_HZUG00TupkcsC2dvraQM7HLHrCd4"

WiFiClient client; Adafruit_MQTT_Client mqtt(&client, AIO_SERVER, AIO_SERVERPORT, AIO_USERNAME, AIO_KEY);

Adafruit_MQTT_Subscribe speed = Adafruit_MQTT_Subscribe(&mqtt, AIO_USERNAME"/feeds/Fan"); Adafruit_MQTT_Subscribe inten = Adafruit_MQTT_Subscribe(&mqtt, AIO_USERNAME "/feeds/Led"); Adafruit_MQTT_Subscribe autom = Adafruit_MQTT_Subscribe(&mqtt, AIO_USERNAME "/feeds/Automate");

void MQTT_connect(); void datatransfer(int);

int on_off; int sliderval1; int sliderval2; void setup(){ Serial.begin(9600); pinMode(Automated, OUTPUT); pinMode(Led, OUTPUT); pinMode(Fan, OUTPUT);

WiFi.begin(WLAN_SSID, WLAN_PASS); while (WiFi.status() != WL_CONNECTED) { delay(500); }

mqtt.subscribe(&autom); mqtt.subscribe(&speed); mqtt.subscribe(&inten); }

void loop (){ MQTT_connect();

Adafruit_MQTT_Subscribe *subscription; while ((subscription = mqtt.readSubscription(5000))){ if (subscription == &autom){

on_off = atoi((char *)autom.lastread); if (on_off == 1) digitalWrite(Automated,HIGH); if (on_off == 0) digitalWrite(Automated,LOW);

}

if (subscription == &speed){

sliderval1 = atoi((char *)speed.lastread); analogWrite(Fan, sliderval1); }

if (subscription == &inten){

sliderval2 = atoi((char *)inten.lastread); analogWrite(Led, sliderval2); } } datatransfer(on_off); datatransfer(sliderval1); datatransfer(sliderval2);

}

void MQTT_connect() {

if (mqtt.connected()) { return; }

while (mqtt.connect() != 0) { mqtt.disconnect(); delay(2000);
} } void datatransfer(int value){ Serial.println(value); delay(500); }

Arduino Uno code:

int x = A0, y = A1, z = 1; int fan = 11, led = 10; float temp, lux; int autom = 1; int inten = 0; int speed = 0; int fanspeed, light;

int datareceive(){ int receiver = 0; while(Serial.available()==0 ); String s = Serial.readStringUntil('\r'); receiver = s.toInt(); Serial.println(receiver); delay(1000); return receiver; }

void setup(){ Serial.begin(9600); pinMode(fan,OUTPUT); pinMode(led,OUTPUT); pinMode(x,INPUT); pinMode(y,INPUT); pinMode(z,INPUT);

}

void loop(){ autom = datareceive(); speed = datareceive(); inten = datareceive(); if(autom == 1){ fanspeed = 255 - speed; light = 255 - inten; analogWrite(fan,fanspeed); analogWrite(led,light); }

else { temp = analogRead(x); if (temp >= 52 && temp <= 104){ int fanspeed = -4.90384615*temp + 510; analogWrite(fan, fanspeed); } else if(temp > 104) digitalWrite(fan,LOW); else digitalWrite(fan,HIGH); lux = analogRead(y); if (lux >= 430 && lux <= 594){

int light = 1.342657*lux-577.342657;
analogWrite(led,light);
}

else if (lux < 430) digitalWrite(led, LOW); else digitalWrite(led,HIGH); } }

Nodemcu code:

#include <ESP8266WiFi.h>
#include "Adafruit_MQTT.h"
#include "Adafruit_MQTT_Client.h"

#define Automated   D0
#define Led         D1
#define Fan         D2

#define WLAN_SSID       "JioFi2_1EAFF8"
#define WLAN_PASS       "Ode9c@,1S%31ja$1xANkeL"

#define AIO_SERVER      "io.adafruit.com"
#define AIO_SERVERPORT  1883
#define AIO_USERNAME    "_inishu"
#define AIO_KEY        "aio_HZUG00TupkcsC2dvraQM7HLHrCd4"

WiFiClient client;
Adafruit_MQTT_Client mqtt(&client, AIO_SERVER, AIO_SERVERPORT, AIO_USERNAME, AIO_KEY);

Adafruit_MQTT_Subscribe speed = Adafruit_MQTT_Subscribe(&mqtt, AIO_USERNAME"/feeds/Fan"); 
Adafruit_MQTT_Subscribe inten = Adafruit_MQTT_Subscribe(&mqtt, AIO_USERNAME "/feeds/Led");
Adafruit_MQTT_Subscribe autom = Adafruit_MQTT_Subscribe(&mqtt, AIO_USERNAME "/feeds/Automate");

void MQTT_connect();
void datatransfer(int);


int on_off;
int sliderval1;
int sliderval2;
void setup(){
    Serial.begin(9600);
    pinMode(Automated, OUTPUT);
    pinMode(Led, OUTPUT);
    pinMode(Fan, OUTPUT);

    WiFi.begin(WLAN_SSID, WLAN_PASS);
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
    }

    mqtt.subscribe(&autom);
    mqtt.subscribe(&speed);
    mqtt.subscribe(&inten);
}


void loop (){
    MQTT_connect();

    Adafruit_MQTT_Subscribe *subscription;
    while ((subscription = mqtt.readSubscription(5000))){
        if (subscription == &autom){
            on_off = atoi((char *)autom.lastread);
            if (on_off == 1)   digitalWrite(Automated,HIGH);
            if (on_off == 0)   digitalWrite(Automated,LOW);
        }
        
        if (subscription == &speed){
            sliderval1 = atoi((char *)speed.lastread);
            analogWrite(Fan, sliderval1);
        }

        if (subscription == &inten){
            sliderval2 = atoi((char *)inten.lastread);
            analogWrite(Led, sliderval2);
        }
    }
    datatransfer(on_off);
    datatransfer(sliderval1);
    datatransfer(sliderval2);
}


void MQTT_connect() {
    if (mqtt.connected()) {
         return;
    }
  
    while (mqtt.connect() != 0) {
        mqtt.disconnect();
        delay(2000);  
    }
}

void datatransfer(int value){
    Serial.println(value);
    delay(500);
} 

Arduino Uno code:

int x = A0, y = A1, z = 1;
int fan = 11, led = 10;
float temp, lux;
int autom = 1;
int inten = 0;
int speed = 0;
int fanspeed, light;

int datareceive(){
    int receiver = 0;
    while(Serial.available()==0 );
    String s = Serial.readStringUntil('\r');
    receiver = s.toInt();
    Serial.println(receiver);
    delay(1000);
    return receiver;
}
 
void setup(){
    Serial.begin(9600);
    pinMode(fan,OUTPUT);
    pinMode(led,OUTPUT);
    pinMode(x,INPUT);
    pinMode(y,INPUT);
    pinMode(z,INPUT);
}
 
void loop(){
    autom = datareceive();
    speed = datareceive();
    inten = datareceive();
    if(autom == 1){
        fanspeed = 255 - speed;
        light = 255 - inten;
        analogWrite(fan,fanspeed);
        analogWrite(led,light);
    }  
    else {
        temp = analogRead(x);
        if (temp >= 52 && temp <= 104){
            int fanspeed = -4.90384615*temp + 510;
            analogWrite(fan, fanspeed);
        }
        else if(temp > 104)  digitalWrite(fan,LOW);
        else digitalWrite(fan,HIGH);
        lux = analogRead(y);
        if (lux >= 430 && lux <= 594){
            int light = 1.342657*lux-577.342657;
            analogWrite(led,light);
        }
        else if (lux < 430) digitalWrite(led, LOW);
        else digitalWrite(led,HIGH);
    }
}