diff --git a/klingel.md b/klingel.md
index ed99405..42f63fb 100644
--- a/klingel.md
+++ b/klingel.md
@@ -2,7 +2,7 @@
 title: Door bell
 description: 
 published: 1
-date: 2024-03-03T16:06:03.702Z
+date: 2024-03-03T16:09:33.767Z
 tags: 
 editor: markdown
 dateCreated: 2024-03-02T02:22:57.232Z
@@ -54,6 +54,182 @@ https://forum.arduino.cc/t/wlan-klingel-mit-esp8266-fur-fritzbox/589769
 
 
 
+## Code
+
+```
+//DoorBell.ino
+#include <Homie.h>
+
+int readDelay = 50;
+int buttonPressDelay = 3000;
+int openingDelay = 3000;
+int inputPin = D3;
+int relayPin = D1;
+int inputValue = 0;
+bool opened = false;
+int timeOpened = 0;
+
+HomieNode doorbellNode("button", "button");
+HomieNode openerNode("switch", "switch");
+
+boolean openerHandler(const HomieRange& range, const String& value) {
+  if(value != "true" && value != "false") return false;
+
+  if(value == "true") {
+    digitalWrite(relayPin, HIGH);
+    openerNode.setProperty("on").send("true");
+    Serial.println("Opener started ...");
+    opened = true;
+    timeOpened = millis();
+  }
+
+  return true;
+}
+
+void loopHandler() {
+  inputValue = digitalRead(inputPin);
+
+  digitalWrite(BUILTIN_LED, inputValue);
+
+  if(inputValue == 0) {
+    Serial.println("Doorbell pressed ...");
+    doorbellNode.setProperty("pressed").send("true");
+    delay(buttonPressDelay);
+    doorbellNode.setProperty("pressed").send("false");
+  }
+
+  delay(readDelay);
+}
+
+void setup() {
+  Serial.begin(115200);
+  Serial.println();
+
+  pinMode(inputPin, INPUT_PULLUP);
+  pinMode(BUILTIN_LED, OUTPUT);
+  pinMode(relayPin, OUTPUT);
+  
+  digitalWrite(relayPin, LOW);
+
+  Homie_setBrand("doorbell");
+  Homie_setFirmware("Doorbell", "1.0.0");
+
+  openerNode.advertise("on").settable(openerHandler);
+  Homie.setLoopFunction(loopHandler);
+
+  Homie.setup();
+}
+
+void loop() {
+  int timeNow = millis();
+
+  if(timeOpened > 0 && (timeNow - timeOpened) > 3000) {
+    Serial.println("Close ...");
+    Serial.println(timeNow);
+    Serial.println(timeOpened);
+    timeOpened = 0;
+
+    digitalWrite(relayPin, LOW);
+    openerNode.setProperty("on").send("false");
+    Serial.println("Opener finished ...");
+  }
+
+  Homie.loop();
+}
+```
+
+Die dazugehörige config.json würde wie folgt aussehen:
+
+```
+{
+  "name": "Doorbell",
+  "device_id": "c01",
+  "wifi": {
+    "ssid": "[SSID]",
+    "password": "[PASSWORD]"
+  },
+  "mqtt": {
+    "host": "192.168.178.54",
+    "port": 1883,
+    "base_topic": "doorbell/",
+    "auth": true,
+    "username": "homeassistant",
+    "password": ""
+  },
+  "ota": {
+    "enabled": true
+  }
+}
+```
+
+Zum Thema Homie und Wemos D1 mini werde ich noch einen weiteren Artikel schreiben.
+
+Anbindung an Home-Assistant
+```
+#configuration.yaml
+mqtt:
+  embedded:
+binary_sensor:
+  - platform: "mqtt"
+    name: intercom_bell
+    state_topic: "doorbell/c01/button/pressed"
+    payload_on: "true"
+    payload_off: "false"
+    device_class: "sound"
+    retain: true
+switch:
+  - platform: mqtt
+    name: intercom_opener
+    state_topic: "doorbell/c01/switch/on"
+    command_topic: "doorbell/c01/switch/on/set"
+    payload_on: "true"
+    payload_off: "false"
+    retain: true
+    icon: mdi:lock
+#customize.yaml
+binary_sensor.intercom_bell:
+  friendly_name: Klingel
+switch.intercom_opener:
+  friendly_name: Türöffner
+```
+
+Regeln für Telegram
+```
+#automation.yaml
+- alias: 'Telegram Bot: Benachrichtige über klingeln'
+  trigger:
+    platform: state
+    entity_id: binary_sensor.intercom_bell
+    from: 'off'
+    to: 'on'
+  action:
+    - service: telegram_bot.send_message
+      data_template:
+        message: 'Es klingelt an der Tür'
+        disable_notification: true
+        inline_keyboard:
+          - "Tür öffnen:/open_door"
+
+- alias: 'Telegram Bot: Öffne die Tür'
+  trigger:
+    platform: event
+    event_type: telegram_callback
+    event_data:
+      data: '/open_door'
+  action:
+    - service: telegram_bot.edit_replymarkup
+      data_template:
+        message_id: 'last'
+        chat_id: '{{ trigger.event.data.chat_id }}'
+        inline_keyboard: []
+    - service: telegram_bot.send_message
+      data_template:
+        target: '{{ trigger.event.data.user_id }}'
+        message: 'Die Tür wird geöffnet'
+        disable_notification: true
+    - service: switch.turn_on
+      entity_id: switch.intercom_opener
+```