|
[{"id":"ddecbc9e.f31ab","type":"tab","label":"SIGNL4 Camera Alert","disabled":false,"info":"This flow sends an alert with an image of a surveillance camera if a motion has been detected.\r\n\r\n## Camera\r\nAs camera we just use an Android phone and the [tinyCam Pro](https://play.google.com/store/apps/details?id=com.alexvas.dvr.pro) app. This one can detect motion and also provides an API for accessing the video stream or current image.\r\n\r\n## Alerting App\r\nFor alerting we use the app-based alerting service [SIGNL4](https://www.signl4.com). The app receives the alert along with the image and a link to the video stream.\r\n\r\n## Node-RED Flow\r\nThe Node-RED flow waits for the webhook request indicating that the camera has detected some motion. Then the HTTP request downloads the current image. The JavaScript function assembles the alert data and also converts the binary image data into a base64 string.\r\n\r\nThe flow can be adapted easily to support other cameras as well.\r\n"},{"id":"64c6ac2d.225464","type":"function","z":"ddecbc9e.f31ab","name":"","func":"\nlet base64Data = msg.payload.toString('base64');\n\nvar data = {\n \"attachmentBase64Content1\": base64Data,\n \"attachmentMimeType1\": \"image/jpeg\",\n \"X-S4-Location\": \"52.399442,13.0583737\",\n \"Subject\": \"Camera Alert\",\n \"Body\": \"Intruder detected.\",\n \"LiveStream\": \"http://192.168.2.103:8083/live\"\n};\n\nmsg.payload = data;\n\nreturn msg;\n","outputs":1,"noerr":0,"initialize":"","finalize":"","x":580,"y":180,"wires":[["29e0cf02.12d9c"]]},{"id":"60ef8e95.a1b29","type":"http in","z":"ddecbc9e.f31ab","name":"Webhook","url":"/webhook","method":"get","upload":false,"swaggerDoc":"","x":140,"y":280,"wires":[["ae7fe2fb.52c0f","8798e579.638418"]]},{"id":"ae7fe2fb.52c0f","type":"http response","z":"ddecbc9e.f31ab","name":"","statusCode":"200","headers":{},"x":280,"y":340,"wires":[]},{"id":"7e2719e5.19a388","type":"inject","z":"ddecbc9e.f31ab","name":"Manual Trigger","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":160,"y":180,"wires":[["8798e579.638418"]]},{"id":"29e0cf02.12d9c","type":"SIGNL4","z":"ddecbc9e.f31ab","name":"SIGNL4 Alerting","teamSecret":"********","alertSubject":"","alertBody":"","alertS4Service":"","alertS4Location":"","alertS4AlertingScenario":"single_ack","alertS4Filtering":"false","alertS4ExternalID":"","x":740,"y":240,"wires":[[]]},{"id":"8798e579.638418","type":"http request","z":"ddecbc9e.f31ab","name":"Get Image","method":"GET","ret":"bin","paytoqs":"ignore","url":"http://192.168.2.103:8083/axis-cgi/jpg/image.cgi","tls":"","persist":false,"proxy":"","authType":"basic","x":410,"y":240,"wires":[["64c6ac2d.225464"]]}] |
