Mit ESP8266 Daten verschicken.

#include <ESP8266WiFi.h>

const char* ssid = ".....";

const char* password = ".......";

WiFiServer server(80);

void setup() {

  Serial.begin(9600);

  delay(10);

  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");

  server.begin();

  Serial.println("Server started");

  Serial.println(WiFi.localIP());

}

void loop() {

  WiFiClient client = server.available();

  if (!client) {

    return;

  }

  while(!client.available()){

    delay(1);

  }

  String req = client.readStringUntil('\r');

  // Serial.println(req);

  client.flush();

  if (req.indexOf("0ON") != -1)

    Serial.println("0=on");

  else if (req.indexOf("0OFF") != -1)

     Serial.println("0=off");

  else {

    Serial.println("invalid request");

    client.stop();

    return;

  }

  client.flush();

  delay(1);

}