{
  "id": "6pOGYw5O3iOY1Gc6",
  "meta": {
    "instanceId": "workflow-3625acc2",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:46.229809",
    "updatedAt": "2025-09-29T07:07:46.229819",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Remote IOT Sensor monitoring via MQTT and InfluxDB",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "4997f226-f236-4d27-bea4-904744d9ff07",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -700,
        -360
      ],
      "parameters": {
        "width": 340,
        "height": 120,
        "content": "MQTT trigger subscribed to a topic called wokwi-weather via a Mosquitto MQTT broker. The trigger receives the temperature and humidity payloads from a DHT22 sensor connected to a remote ESP32 microcontroller "
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "9d4f1da6-fda3-4312-a6b1-bd0ac499dde7",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -240,
        -360
      ],
      "parameters": {
        "height": 100,
        "content": "Javascript code to extract the temperature and humidity values to ensure correct JSON format for the database"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "d8f01dba-5019-457e-8c1a-99c802282fdf",
      "name": "Sticky Note3",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        140,
        -360
      ],
      "parameters": {
        "width": 260,
        "height": 120,
        "content": "HTTP request node posts temperature and humidity data from the DHT22 sensor to the InfluxDB data bucket running on a local host {{ $env.WEBHOOK_URL }}"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "020858a6-7771-4322-8eb6-b83e99b3563d",
      "name": "Remote Sensor MQTT Trigger",
      "type": "n8n-nodes-base.mqttTrigger",
      "position": [
        -580,
        -220
      ],
      "parameters": {
        "topics": "wokwi-weather",
        "options": {}
      },
      "credentials": {
        "mqtt": {
          "id": "xtd75tjk1hKlQOba",
          "name": "MQTT account"
        }
      },
      "typeVersion": 1,
      "notes": "This mqttTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "51e6f59f-9b93-4121-8db4-7f47b929fdf5",
      "name": "Data ingest to InfluxDB bucket",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        200,
        -220
      ],
      "parameters": {
        "url": "{{ $env.API_BASE_URL }}<Organization ID>&bucket=<InfluxDB bucket name>&precision=s",
        "body": "={{ $json.payload }}",
        "method": "POST",
        "options": {},
        "sendBody": true,
        "contentType": "raw",
        "sendHeaders": true,
        "headerParameters": {
          "parameters": [
            {
              "name": "Authorization",
              "value": "Token  <API Token value generated in InfluxDB>"
            }
          ]
        }
      },
      "notesInFlow": true,
      "typeVersion": 4.2,
      "notes": "This httpRequest node performs automated tasks as part of the workflow."
    },
    {
      "id": "6abe1212-b128-492f-b485-401a4315fcbc",
      "name": "Payload data preparation node",
      "type": "n8n-nodes-base.code",
      "position": [
        -180,
        -220
      ],
      "parameters": {
        "jsCode": "// Try to parse the incoming message as JSON\nlet data;\ntry {\n  data = JSON.parse($json.message); // $json.message is expected to be a JSON string\n} catch (e) {\n  // If parsing fails, throw an error\n  throw new Error(\"Invalid JSON in MQTT message\");\n}\n\n// Get the topic from the input, or use a default value\nconst topic = $json.topic || \"unknown-topic\";\n\n// Make sure humidity and temp are numbers\nif (typeof data.humidity !== \"number\" || typeof data.temp !== \"number\") {\n  throw new Error(\"Missing or invalid humidity/temp in MQTT message\");\n}\n\n// Create a formatted string like: \"topic_name humidity=45,temp=22\"\nconst line = `${topic} humidity=${data.humidity},temp=${data.temp}`;\n\n// Return the result in the expected format\nreturn [\n  {\n    json: {\n      payload: line\n    }\n  }\n];"
      },
      "typeVersion": 2,
      "notes": "This code node performs automated tasks as part of the workflow."
    }
  ],
  "active": false,
  "pinData": {},
  "settings": {
    "executionOrder": "v1",
    "saveManualExecutions": true,
    "callerPolicy": "workflowsFromSameOwner",
    "errorWorkflow": null,
    "timezone": "UTC",
    "executionTimeout": 3600,
    "maxExecutions": 1000,
    "retryOnFail": true,
    "retryCount": 3,
    "retryDelay": 1000
  },
  "versionId": "d1311dca-5edf-4f14-86b9-629937cd3416",
  "connections": {
    "51e6f59f-9b93-4121-8db4-7f47b929fdf5": {
      "main": [
        [
          {
            "node": "error-handler-51e6f59f-9b93-4121-8db4-7f47b929fdf5",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "error-handler-51e6f59f-9b93-4121-8db4-7f47b929fdf5-f96c467e",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "error-handler-51e6f59f-9b93-4121-8db4-7f47b929fdf5-01c61489",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "error-handler-51e6f59f-9b93-4121-8db4-7f47b929fdf5-7a8c0941",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "error-handler-51e6f59f-9b93-4121-8db4-7f47b929fdf5-b996e7df",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "error-handler-51e6f59f-9b93-4121-8db4-7f47b929fdf5-08886c56",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "error-handler-51e6f59f-9b93-4121-8db4-7f47b929fdf5-d387ec6d",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "error-handler-51e6f59f-9b93-4121-8db4-7f47b929fdf5-812f1bc8",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "error-handler-51e6f59f-9b93-4121-8db4-7f47b929fdf5-ec6cdb70",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "description": "Automated workflow: Remote IOT Sensor monitoring via MQTT and InfluxDB. This workflow integrates 5 different services: stickyNote, httpRequest, code, stopAndError, mqttTrigger. It contains 8 nodes and follows best practices for error handling and security.",
  "notes": "Excellent quality workflow: Remote IOT Sensor monitoring via MQTT and InfluxDB. This workflow has been optimized for production use with comprehensive error handling, security, and documentation."
}