#include "ESP8266.h"
#include <SoftwareSerial.h>
#include <math.h>

#define SSID     "имя_твоего_Wi-Fi"
#define PASSWORD "пароль_твоего_Wi-Fi"
#define TEMP_PIN A0

SoftwareSerial mySerial(4, 5);
ESP8266 wifi(mySerial);
String name = "твой_ключ";

void setup(void) {
  Serial.begin(9600);
  if (wifi.joinAP(SSID, PASSWORD)) {
    Serial.println("https://dweet.io/follow/" + name);
  } else {
    Serial.println("Wi-Fi connection error");
  }
}

void loop(void) {
  float v_temp = 1023.0 / analogRead(TEMP_PIN) - 1.0;
  float temp = 1.0 / ( -log(v_temp) / 3977.0
                            + 1.0 / 295.0 ) - 273.0;
  if (wifi.createTCP("www.dweet.io", 80)) {
    String data = "GET /dweet/for/" + name + "?";
    data += "temp=" + String(temp) + " HTTP/1.1\r\n";
    data += "Host: dweet.io\r\n\r\n";
    wifi.send(data.c_str(), data.length());
    wifi.releaseTCP();
  } else {
    Serial.println("create TCP error");
  }
  delay(1000);
}