added section about mqtt recorder

mqtt/mqtt.ipynb

@@ -304,6 +304,41 @@
     "    publisher.publish(topic=USERDATA_TOPIC, payload=i)"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## MQTT-Recorder\n",
+    "\n",
+    "Mit dem [mqtt-recorder](https://github.com/rpdswtk/mqtt_recorder) können Nachrichten an einen Broker aufgezeichnet und \n",
+    "später wieder abgespielt werden.\n",
+    "\n",
+    "Dies hilft immer dann, wenn die Hardware noch keine Daten an den Broker senden kann.\n",
+    "\n",
+    "### Installation\n",
+    "\n",
+    "Das Tool kann einfach über `pip` installiert werden: `pip install mqtt-recorder`\n",
+    "\n",
+    "### Daten aufzeichnen \n",
+    "\n",
+    "`mqtt-recorder --mode record --host localhost --file daten.csv --topics topics.json `\n",
+    "\n",
+    "Aufbau der Datei `topics.json`\n",
+    "\n",
+    "```\n",
+    "{ \n",
+    "    \"topics\": [ \n",
+    "        \"ein/topic\", \n",
+    "        \"ein/anderes/topic\" \n",
+    "    ] \n",
+    "} \n",
+    "```\n",
+    "\n",
+    "### Daten abspielen \n",
+    "\n",
+    "`mqtt-recorder --mode replay --host localhost --file daten.csv `"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -390,9 +425,9 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.8"
+   "version": "3.11.5"
   }
  },
  "nbformat": 4,
- "nbformat_minor": 2
+ "nbformat_minor": 4
 }