Automate MFU Parking Slot Monitoring

The workflow JSON

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{
  "name": "MFU Parking (No Drive)",
  "nodes": [
    {
      "parameters": {
        "triggerTimes": {
          "item": [
            {
              "mode": "everyMinute"
            }
          ]
        }
      },
      "id": "schedule",
      "name": "Schedule Trigger",
      "type": "n8n-nodes-base.scheduleTrigger",
      "typeVersion": 2,
      "position": [
        200,
        200
      ]
    },
    {
      "parameters": {
        "functionCode": "return [{json:{cam_id:'cam01', rtsp:'rtsp://YOUR_CAM/stream'}}];"
      },
      "id": "list",
      "name": "Camera List",
      "type": "n8n-nodes-base.function",
      "typeVersion": 2,
      "position": [
        420,
        200
      ]
    },
    {
      "parameters": {
        "command": "ffmpeg -y -i {{$json.rtsp}} -frames:v 1 -f image2pipe -vcodec mjpeg -",
        "options": {
          "binaryPropertyName": "snapshot"
        }
      },
      "id": "ffmpeg",
      "name": "RTSP Snapshot",
      "type": "n8n-nodes-base.executeCommand",
      "typeVersion": 2,
      "position": [
        640,
        200
      ]
    },
    {
      "parameters": {
        "url": "http://YOUR_API_SERVER:8000/process?cam_id={{$json.cam_id}}",
        "options": {
          "bodyContentType": "multipart-form-data",
          "sendBinaryProperty": [
            {
              "property": "snapshot"
            }
          ],
          "headerParametersUi": {
            "parameter": [
              {
                "name": "X-API-Key",
                "value": "changeme"
              }
            ]
          }
        }
      },
      "id": "http",
      "name": "Process Slots API",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4,
      "position": [
        860,
        200
      ]
    },
    {
      "parameters": {
        "functionCode": "const r = $json; console.log(r); return [{json:r}];"
      },
      "id": "log",
      "name": "Log Result",
      "type": "n8n-nodes-base.function",
      "typeVersion": 2,
      "position": [
        1080,
        200
      ]
    }
  ],
  "connections": {
    "Schedule Trigger": {
      "main": [
        [
          {
            "node": "Camera List",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Camera List": {
      "main": [
        [
          {
            "node": "RTSP Snapshot",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "RTSP Snapshot": {
      "main": [
        [
          {
            "node": "Process Slots API",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Process Slots API": {
      "main": [
        [
          {
            "node": "Log Result",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}

About this workflow

MFU Parking (No Drive). Uses executeCommand, httpRequest. Scheduled trigger; 5 nodes.

Source: https://github.com/ChisanuchaVongtalay/parking-process/blob/943c9836474dfbf6d9770ddcec7d79761109d353/n8n/parking_flow.json — original creator credit. Request a take-down →

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