Real time temperature analysis using Node MCU, Things speak, Arduino IDE, LM35

 #include "ThingSpeak.h"

#include <ESP8266WiFi.h>

const int LM35 = A0;

//----------- Enter you Wi-Fi Details---------//

char ssid[] = "Your WIFI name"; //SSID

char pass[] = "Your WIFI password"; // Password

//-------------------------------------------//

WiFiClient  client;

unsigned long myChannelNumber = 2330518; // Channel ID here

const int FieldNumber = 1;

const char * myWriteAPIKey = "UGPA60UT6W30KA3E"; // Your Write API Key here

void setup()

{

  Serial.begin(115200);

  WiFi.mode(WIFI_STA);

  ThingSpeak.begin(client);

}

void loop()

{

  if (WiFi.status() != WL_CONNECTED)

  {

    Serial.print("Attempting to connect to SSID: ");

    Serial.println(ssid);

    while (WiFi.status() != WL_CONNECTED)

    {

      WiFi.begin(ssid, pass);

      Serial.print(".");

      delay(5000);

    }

    Serial.println("\nConnected.");

  }

  int ADC;

  float temp;

  ADC = analogRead(LM35);  /* Read Temperature */

  temp = (ADC * 3); /* Convert adc value to equivalent voltage */

  temp = (temp / 10); /* LM35 gives output of 10mv/°C */

  Serial.print("Temperature = ");

  Serial.print(temp);

  Serial.println(" *C");

  delay(1000);

  ThingSpeak.writeField(myChannelNumber, FieldNumber, temp, myWriteAPIKey);

  delay(1000);

}