#include <WiFi.h>
#include <HTTPClient.h>
int mqsensor=A0;
#include <Wire.h>
#include <LiquidCrystal_I2C.h>


LiquidCrystal_I2C lcd(0x27, 16, 2);

// Replace with your WiFi credentials
const char* ssid = "FABLAB";
const char* password = "12345678";

// Replace with your ThingSpeak Write API Key
const char* apiKey = "58R2B0HEWSSK6WYK";

// ThingSpeak API URL
const char* server = "http://api.thingspeak.com/update";

void setup() {
    Serial.begin(115200);
        lcd.begin();
    lcd.backlight();
    WiFi.begin(ssid, password);
    
    //Serial.print("Connecting to WiFi...");
    while (WiFi.status() != WL_CONNECTED) {
        Serial.print(".");
        delay(500);
    }
    //Serial.println("\nConnected to WiFi!");
}

void loop() {
    if (WiFi.status() == WL_CONNECTED) {
        HTTPClient http;
      int value=  analogRead(mqsensor);
      Serial.print("Sensor value=");
      Serial.println(value);
        // Generate random values
        int value1 = value;  // Example: Temperature
           
        lcd.setCursor(0, 0);
        lcd.print("Shivraj"); // Add spaces to clear previous text
        lcd.setCursor(0, 1);
        lcd.print("Sensorvalue=");
        lcd.setCursor(12, 1);
        lcd.println(value1);
        // Construct the request URL
        String url = String(server) + "?api_key=" + apiKey + 
                     "&field1=" + String(value1); 
                   

        //Serial.println("Sending data to ThingSpeak...");
       // Serial.println(url);

        // Send data to ThingSpeak
        http.begin(url);
        int httpCode = http.GET();
        
        if (httpCode > 0) {
          //  Serial.println("Data sent successfully!");
        } else {
          //  Serial.println("Failed to send data.");
        }
        
        http.end();
    } else {
        //Serial.println("WiFi Disconnected!");
    }

    delay(500); // ThingSpeak allows updates every 15 seconds
}