8266+dht11mit 12000mAh 3,7V Batterie

#include <ESP8266WiFi.h>

#include <DHT11.h>

const char* ssid     = "ssid"; // Your ssid

const char* password = "password"; // Your Password

int pin = 2;

WiFiServer server(80);

DHT11 dht11(pin);

double Fahrenheit(double celsius) {

return ((double)(9 / 5) * celsius) + 32;

}

double Kelvin(double celsius) {

return celsius + 273.15;

}

void setup() {

Serial.begin(115200);

delay(10);

Serial.println();

// Connect to WiFi network

WiFi.mode(WIFI_STA);

Serial.println();

Serial.println();

Serial.print("Connecting to ");

Serial.println(ssid);

WiFi.begin(ssid, password);

while (WiFi.status() != WL_CONNECTED) {

delay(500);

Serial.print(".");

}

Serial.println("");

Serial.println("WiFi connected");

// Start the server

server.begin();

Serial.println("Server started");

// Print the IP address

Serial.println(WiFi.localIP());

}

void loop() {

int err;

float temp, humi;

if ((err = dht11.read(humi, temp)) == 0)

{

Serial.print("temperature:");

Serial.print(temp);

Serial.print(" humidity:");

Serial.print(humi);

Serial.println();

}

else

{

Serial.println();

Serial.print("Error No :");

Serial.print(err);

Serial.println();

}

WiFiClient client = server.available();

client.println("HTTP/1.1 200 OK");

client.println("Content-Type: text/html");

client.println("Connection: close");  // the connection will be closed after completion of the response

client.println("Refresh: 5");  // refresh the page automatically every 5 sec

client.println();

client.println("<!DOCTYPE html>");

client.println("<html xmlns='http://www.w3.org/1999/xhtml'>");

client.println("<head>\n<meta charset='UTF-8'>");

client.println("<title>ESP8266 Temperature & Humidity DHT11 Sensor</title>");

client.println("</head>\n<body>");

client.println("<H2>ESP8266 & DHT11 Sensor</H2>");

client.println("<H3>Humidity / Temperature</H3>");

client.println("<pre>");

client.print("Humidity (%)         : ");

client.println((float)humi, 2);

client.print("Temperature (°C)  : ");

client.println((float)temp, 2);

client.print("Temperature (°F)  : ");

client.println(Fahrenheit(temp), 2);

client.print("Temperature (°K)  : ");

client.println(Kelvin(temp), 2);

client.println("</pre>");

client.println("<H3>www.elec-cafe.com</H3>");

client.print("</body>\n</html>");

delay(DHT11_RETRY_DELAY); //delay for reread

}