KNX + Node-RED - Part 2: Telegram-Integration
Nachdem nun im ersten Teil alles vorbereitet und installiert wurde, widmen wir uns gemeinsam den nächsten Punkten. Pushover ist zwar schön und gut, aber eben nur “in eine Richtung”. Das heißt, wir haben keine Möglichkeit zu antworten oder etwas zu steuern. Das ist bei Telegram anders. Mit Telegram kann man relativ einfach eine neue Schnittstelle von außen ins Haus anbieten, welche leicht zu sichern ist. Ohne VPN und andere Themen. Außerdem kann man Bilder versenden und per Text-Nachrichten eben Aktionen anstoßen. Alles kein Problem!
In diesem Teil möchte ich gerne das aktuelle Kamera-Bild von der Mobotix-Kamera an der Haustür abholen und dann in den Gruppenchat senden. So sehe ich auch unterwegs, wer eigentlich gerade vor der Tür steht. Eigentlich ganz einfach, wenn man weiß, wie die Objekte aufgebaut werden müssen. Ich gebe Dir also auf dem Weg zum gesteckten Ziel einige Tipps mit auf den Weg, wie man generell mit Node-RED arbeitet.
Was wird benötigt?
- Einen Raspberry Pi mit Raspberry Pi OS
- Eine laufende KNX-Installation
- Ein KNX IP-Interface (oder IP-Router)
Video
Flows
Teil 1
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{
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"type": "telegram sender",
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},
{
"id": "4cbb0817.3f47f8",
"type": "function",
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"name": "",
"func": "msg.payload = {\n \"chatId\": -516453460,\n \"type\": \"message\",\n \"content\": msg.payload\n};\n\nreturn msg;",
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"noerr": 0,
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"finalize": "",
"libs": [],
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"wires": [
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"port": "3671"
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"usernames": "",
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"sockshost": "",
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"socksusername": "anonymous",
"sockspassword": "",
"bothost": "",
"botpath": "",
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"publicbotport": "8443",
"privatekey": "",
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]
Teil 2
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"name": "Kamerabild per Telegram",
"info": "",
"category": "",
"in": [
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"y": 80,
"wires": [
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}
]
}
],
"out": [],
"env": [],
"meta": {},
"color": "#DDAA99"
},
{
"id": "f8bbd532.b0f758",
"type": "http request",
"z": "3000e92b.c4c9c6",
"name": "Kamerabild",
"method": "GET",
"ret": "bin",
"paytoqs": "ignore",
"url": "http://172.16.0.238/record/current.jpg",
"tls": "",
"persist": false,
"proxy": "",
"authType": "",
"x": 170,
"y": 80,
"wires": [
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},
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"type": "file",
"z": "3000e92b.c4c9c6",
"name": "",
"filename": "/home/pi/haustuer.jpg",
"appendNewline": false,
"createDir": false,
"overwriteFile": "true",
"encoding": "none",
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"y": 80,
"wires": [
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},
{
"id": "423442fd.bb72a4",
"type": "function",
"z": "3000e92b.c4c9c6",
"name": "",
"func": "msg.payload = {\n \"chatId\": -516453460,\n \"type\": \"photo\",\n \"content\": \"/home/pi/haustuer.jpg\",\n \"caption\": \"Haustür\"\n};\n\nreturn msg;",
"outputs": 1,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": [],
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"y": 80,
"wires": [
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"type": "telegram sender",
"z": "3000e92b.c4c9c6",
"name": "",
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"haserroroutput": false,
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"y": 80,
"wires": [
[]
]
},
{
"id": "369a07f9.32b658",
"type": "tab",
"label": "Haustür",
"disabled": false,
"info": ""
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{
"id": "59f3de43.25f6a8",
"type": "pushover",
"z": "369a07f9.32b658",
"name": "",
"device": "",
"title": "Haustür",
"priority": 0,
"sound": "incoming",
"url": "",
"url_title": "",
"html": false,
"x": 1180,
"y": 160,
"wires": []
},
{
"id": "2c9be674.35d2f2",
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"name": "",
"property": "payload",
"propertyType": "msg",
"rules": [
{
"t": "true"
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{
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],
"checkall": "true",
"repair": false,
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"wires": [
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"pt": "msg",
"to": "Es hat an der Haustür geklingelt!",
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"name": "Push bei Klingeln",
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"rules": [
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"checkall": "true",
"repair": false,
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"wires": [
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},
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"type": "function",
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"name": "",
"func": "msg.payload = {\n \"chatId\": -516453460,\n \"type\": \"message\",\n \"content\": msg.payload\n};\n\nreturn msg;",
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"finalize": "",
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"topic": "3/1/0",
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"wires": [
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"z": "369a07f9.32b658",
"x": 790,
"y": 60,
"wires": []
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{
"id": "b08b7f4c.4fc1e",
"type": "delay",
"z": "369a07f9.32b658",
"name": "",
"pauseType": "delay",
"timeout": "3",
"timeoutUnits": "seconds",
"rate": "1",
"nbRateUnits": "1",
"rateUnits": "second",
"randomFirst": "1",
"randomLast": "5",
"randomUnits": "seconds",
"drop": false,
"x": 740,
"y": 100,
"wires": [
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"name": "",
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"y": 100,
"wires": []
},
{
"id": "7729e5a3.9a714c",
"type": "knxEasy-config",
"host": "172.16.0.157",
"port": "3671"
},
{
"id": "d312c643.b1262",
"type": "telegram bot",
"botname": "KNXYouTubeBot",
"usernames": "",
"chatids": "-516453460",
"baseapiurl": "",
"updatemode": "polling",
"pollinterval": "300",
"usesocks": false,
"sockshost": "",
"socksport": "6667",
"socksusername": "anonymous",
"sockspassword": "",
"bothost": "",
"botpath": "",
"localbotport": "8443",
"publicbotport": "8443",
"privatekey": "",
"certificate": "",
"useselfsignedcertificate": false,
"sslterminated": false,
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]
Produkte
Hier findest Du die letzte Generation des Raspberry. Darunter findest Du das passende Gehäuse und SD-Karten.
Raspberry Pi 4 (4GB RAM) Bundle 32GB, schwarz **
Raspberry Pi FLIRC Case - Aluminium Gehäuse 4, Silber/schwarz **
SanDisk Ultra 32GB microSDHC Speicherkarte + Adapter bis zu 98 MB/Sek., Class 10, U1, A1, FFP **
Raspberry 4596 Pi - offizielles Netzteil für Raspberry Pi 4 Model B, USB-C, 5.1V, 3A **
Bei einem Netzteil für den Raspberry sollte unbedingt darauf geachtet werden, dass es mindestens 2500mA (2,5A) liefern kann! Andernfalls kann es zu seltsamen Seiteneffekten kommen, wodurch der Raspberry langsam wird, abstürzt oder plötzlich gar nicht mehr startet. Die erforderliche Leistung wird umso höher, desto mehr USB-Geräte angeschlossen werden. Daher sollte am Netzteil auf keinen Fall gespart werden!
