Node-RED exemplo

exemplo.json

[
    {
        "id": "sensor-simulador",
        "type": "tab",
        "label": "Simulador Sensores"
    },
    {
        "id": "inject-temp",
        "type": "inject",
        "z": "sensor-simulador",
        "name": "Temp",
        "props": [
            {
                "p": "payload"
            }
        ],
        "repeat": "5",
        "payload": "",
        "payloadType": "date",
        "x": 100,
        "y": 60,
        "wires": [
            [
                "gera-temp"
            ]
        ]
    },
    {
        "id": "gera-temp",
        "type": "function",
        "z": "sensor-simulador",
        "name": "Gerar Temperatura",
        "func": "msg.payload = {\n    sensor: 'temperatura',\n    valor: Math.random() * 20 + 20,\n    ts: new Date().toISOString()\n}; \nreturn msg;",
        "outputs": 1,
        "timeout": "",
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "libs": [],
        "x": 280,
        "y": 60,
        "wires": [
            [
                "envia-webhook"
            ]
        ]
    },
    {
        "id": "envia-webhook",
        "type": "http request",
        "z": "sensor-simulador",
        "name": "Enviar para n8n",
        "method": "POST",
        "ret": "txt",
        "paytoqs": "ignore",
        "url": "http://n8n:5678/webhook-test/sensores",
        "tls": "",
        "persist": false,
        "proxy": "",
        "insecureHTTPParser": false,
        "authType": "",
        "senderr": false,
        "headers": [],
        "x": 480,
        "y": 60,
        "wires": [
            [
                "0d4d494b2fa89d32"
            ]
        ]
    },
    {
        "id": "0d4d494b2fa89d32",
        "type": "debug",
        "z": "sensor-simulador",
        "name": "debug 1",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "false",
        "statusVal": "",
        "statusType": "auto",
        "x": 640,
        "y": 140,
        "wires": []
    }
]