Camera Snapshot (webhook -> Capture Image)

The workflow JSON

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{
  "id": "demo-06-snapshot",
  "name": "06 - Camera Snapshot (Webhook -> Capture Image)",
  "nodes": [
    {
      "parameters": {
        "path": "rover-snapshot",
        "httpMethod": "GET",
        "responseMode": "responseNode",
        "options": {}
      },
      "id": "snapshot-webhook",
      "name": "GET /rover-snapshot",
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 2,
      "position": [
        -140,
        0
      ]
    },
    {
      "parameters": {
        "topicName": {
          "__rl": true,
          "mode": "id",
          "value": "/rover/camera/compressed"
        },
        "messageType": {
          "__rl": true,
          "mode": "id",
          "value": "sensor_msgs/msg/CompressedImage"
        },
        "timeoutMs": 10000,
        "dataPropertyName": "data",
        "resize": true,
        "maxWidth": 640
      },
      "id": "snapshot-capture",
      "name": "Capture From Rover Camera",
      "type": "@fhnw-rover/n8n-nodes-ros2.rosTopicCaptureImage",
      "typeVersion": 1,
      "position": [
        100,
        0
      ],
      "credentials": {
        "rosBridgeApi": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "respondWith": "binary",
        "responseDataSource": "set",
        "inputFieldName": "data",
        "options": {}
      },
      "id": "snapshot-respond",
      "name": "Return the Image",
      "type": "n8n-nodes-base.respondToWebhook",
      "typeVersion": 1.1,
      "position": [
        340,
        0
      ]
    }
  ],
  "connections": {
    "GET /rover-snapshot": {
      "main": [
        [
          {
            "node": "Capture From Rover Camera",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Capture From Rover Camera": {
      "main": [
        [
          {
            "node": "Return the Image",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "active": true,
  "settings": {
    "executionOrder": "v1"
  }
}

Credentials you'll need

Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.

• rosBridgeApi

About this workflow

06 - Camera Snapshot (Webhook -> Capture Image). Uses @fhnw-rover/n8n-nodes-ros2. Webhook trigger; 3 nodes.

Source: https://github.com/sacovo/n8n-nodes-ros2/blob/5c0a3f2fde70374468e4f27f89256af0a4cee400/demo/workflows/06-camera-snapshot.json — original creator credit. Request a take-down →

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