Enlace del canal Thingspeak Canal de Thingspeak
Evidencias
Código
#include <ESP8266WiFi.h>
#include <SimpleDHT.h>
String apiKey = "K9E3L43FUSP8CRTU";
const char* ssid = "ssid";
const char* password = "pass";
const char* server = "api.thingspeak.com";
int entradaAnalogicaMq135 = 0;
int pinMql35 = A0;
int pinDHT11 = D0;
SimpleDHT11 dht11;
WiFiClient client;
void setup() {
Serial.begin(115200);
delay(10);
pinMode(A0, INPUT);
WiFi.begin(ssid, password);
Serial.println();
Serial.println();
Serial.print("Connectando a ");
Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi conectado");
}
void loop() {
byte temperatura = 0;
byte humedad = 0;
/* if (dht11.read(pinDHT11, &temperatura, &humedad, NULL)) {
Serial.print("Read DHT11 failed.");
return;
}*/
entradaAnalogicaMq135 = analogRead(pinMql35);
if (client.connect(server, 80)) {
String postStr = apiKey;
postStr += "&field1=";
postStr += String((int)temperatura);
postStr += "&field2=";
postStr += String((int)humedad);
postStr += "&field3=";
postStr += String((int)entradaAnalogicaMq135);
postStr += "\r\n\r\n";
client.print("POST /update HTTP/1.1\n");
client.print("Host: api.thingspeak.com\n");
client.print("Connection: close\n");
client.print("X-THINGSPEAKAPIKEY: " + apiKey + "\n");
client.print("Content-Type: application/x-www-form-urlencoded\n");
client.print("Content-Length: ");
client.print(postStr.length());
client.print("\n\n");
client.print(postStr);
Serial.println("% Enviando a Thingspeak");
}
client.stop();
Serial.println("Esperando…");
delay(20000);
}