Node-RED flow to forward OVMS location information to OwnTracks

README.rst

See also owntracks/recorder#331. Thanks, @glynhudson!

glynhudson-ovms-owntracks.json

[
  {
    "id": "89e9d395.f358",
    "type": "mqtt in",
    "z": "d605de2e.9f01e",
    "name": "",
    "topic": "ovms/emonpi/<VEHICLE-ID>/metric/v/p/latitude",
    "qos": "0",
    "broker": "42d1a439.248b0c",
    "x": 200,
    "y": 60,
    "wires": [
      [
        "a434b606.26e328"
      ]
    ]
  },
  {
    "id": "c9be458f.e2e928",
    "type": "mqtt in",
    "z": "d605de2e.9f01e",
    "name": "",
    "topic": "ovms/emonpi/<VEHICLE-ID>/metric/v/p/longitude",
    "qos": "0",
    "broker": "42d1a439.248b0c",
    "x": 200,
    "y": 100,
    "wires": [
      [
        "b2f98901.84ec48"
      ]
    ]
  },
  {
    "id": "dd774d3a.647f2",
    "type": "function",
    "z": "d605de2e.9f01e",
    "name": "context.global.lat",
    "func": "context.global.lat = msg.payload;\nreturn msg;",
    "outputs": 1,
    "noerr": 0,
    "x": 710,
    "y": 80,
    "wires": [
      [
        "9656d4f7.b65408"
      ]
    ]
  },
  {
    "id": "3087ba49.6ce996",
    "type": "function",
    "z": "d605de2e.9f01e",
    "name": "context.global.lon",
    "func": "context.global.lon = msg.payload;\nreturn msg;",
    "outputs": 1,
    "noerr": 0,
    "x": 710,
    "y": 120,
    "wires": [
      []
    ]
  },
  {
    "id": "9656d4f7.b65408",
    "type": "debug",
    "z": "d605de2e.9f01e",
    "name": "",
    "active": false,
    "tosidebar": true,
    "console": false,
    "tostatus": false,
    "complete": "true",
    "x": 930,
    "y": 80,
    "wires": []
  },
  {
    "id": "a434b606.26e328",
    "type": "function",
    "z": "d605de2e.9f01e",
    "name": "ignore 0",
    "func": "var value=msg.payload;\n// if (value !==\"\" && value !==\"0\" && value !==0 );{\nif (value){\n    return msg;\n}\n",
    "outputs": 1,
    "noerr": 0,
    "x": 480,
    "y": 80,
    "wires": [
      [
        "dd774d3a.647f2"
      ]
    ]
  },
  {
    "id": "b2f98901.84ec48",
    "type": "function",
    "z": "d605de2e.9f01e",
    "name": "ignore 0",
    "func": "var value=msg.payload;\n// if (value !==\"\" && value !==\"0\" && value !==0 );{\nif (value){\n    return msg;\n}\n",
    "outputs": 1,
    "noerr": 0,
    "x": 480,
    "y": 120,
    "wires": [
      [
        "3087ba49.6ce996"
      ]
    ]
  },
  {
    "id": "f4ec6fc4.4dcaa",
    "type": "inject",
    "z": "d605de2e.9f01e",
    "name": "",
    "topic": "",
    "payload": "",
    "payloadType": "date",
    "repeat": "60",
    "crontab": "",
    "once": false,
    "onceDelay": "60",
    "x": 90,
    "y": 260,
    "wires": [
      [
        "e9f44233.cddf6"
      ]
    ]
  },
  {
    "id": "a61cddc0.6c138",
    "type": "function",
    "z": "d605de2e.9f01e",
    "name": "create object",
    "func": "var owntracks={_type:\"location\",tst:msg.payload,lat:Number(context.global.lat),lon:Number(context.global.lon)};\nvar newMsg = { payload: JSON.stringify(owntracks) };\nreturn newMsg;",
    "outputs": 1,
    "noerr": 0,
    "x": 450,
    "y": 260,
    "wires": [
      [
        "4b6d9633.eead28",
        "a5474c90.c79c4",
        "55689f77.2efd3"
      ]
    ]
  },
  {
    "id": "4b6d9633.eead28",
    "type": "debug",
    "z": "d605de2e.9f01e",
    "name": "",
    "active": false,
    "tosidebar": true,
    "console": false,
    "tostatus": false,
    "complete": "true",
    "x": 930,
    "y": 260,
    "wires": []
  },
  {
    "id": "a5474c90.c79c4",
    "type": "mqtt out",
    "z": "d605de2e.9f01e",
    "name": "",
    "topic": "owntracks/my/car",
    "qos": "",
    "retain": "",
    "broker": "834ac211.8eba8",
    "x": 730,
    "y": 300,
    "wires": []
  },
  {
    "id": "55689f77.2efd3",
    "type": "file",
    "z": "d605de2e.9f01e",
    "name": "",
    "filename": "/data/gps-json.csv",
    "appendNewline": true,
    "createDir": false,
    "overwriteFile": "false",
    "x": 770,
    "y": 200,
    "wires": [
      []
    ]
  },
  {
    "id": "e9f44233.cddf6",
    "type": "function",
    "z": "d605de2e.9f01e",
    "name": "timestamp in s",
    "func": "// msg.payload = msg.payload/1000;\nmsg.payload = Math.floor(Date.now() / 1000);\nreturn msg;",
    "outputs": 1,
    "noerr": 0,
    "x": 260,
    "y": 260,
    "wires": [
      [
        "a61cddc0.6c138"
      ]
    ]
  },
  {
    "id": "42d1a439.248b0c",
    "type": "mqtt-broker",
    "z": "",
    "name": "emonpi",
    "broker": "IP-ADDRESS",
    "port": "1883",
    "clientid": "",
    "usetls": false,
    "compatmode": true,
    "keepalive": "60",
    "cleansession": true,
    "birthTopic": "",
    "birthQos": "0",
    "birthPayload": "",
    "closeTopic": "",
    "closeQos": "0",
    "closePayload": "",
    "willTopic": "",
    "willQos": "0",
    "willPayload": ""
  },
  {
    "id": "834ac211.8eba8",
    "type": "mqtt-broker",
    "z": "",
    "name": "MQTT-SERVER",
    "broker": "IP-ADDRESS",
    "port": "1883",
    "clientid": "",
    "usetls": false,
    "compatmode": true,
    "keepalive": "60",
    "cleansession": true,
    "birthTopic": "",
    "birthQos": "0",
    "birthPayload": "",
    "closeTopic": "",
    "closeQos": "0",
    "closePayload": "",
    "willTopic": "",
    "willQos": "0",
    "willPayload": ""
  }
]

Thanks for posting this (and to @glynhudson). Exactly what I was looking for.