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nodered.md 34KB

title: Node-RED description: Point ‘n’ Click workflow automation parent: smarthome position: 300 date: 2021-11-01 update: 2022-05-23

comments: true

Node-RED is a great tool for visually creating workflows based on events. I use it in conjunction with my ESP-Env sensor and actor hardware and MQTT to automate my smart home.

I plan to extend these workflows as required when I add new hardware to my network.

Here is a simple setup that automatically switches lights in my bathroom according to the sun position, using node-red-contrib-sunevents. It allows forcing a temporary override via another MQTT topic, for a lightswitch.

The fan in my window-less bathroom is kept on all the time for now. In the future I want to add movement sensors to the bathroom and integrate them into this logic, as well as the temperature / humidity sensors I already have in there. All these devices run my ESP-Env firmware.

And here are the flows for importing in Node-RED. Copy to clipboard

[
    {
        "id": "490116e54af5ff9a",
        "type": "tab",
        "label": "Bathroom Lights",
        "disabled": false,
        "info": "",
        "env": []
    },
    {
        "id": "74341bea93cc320d",
        "type": "tab",
        "label": "Bathroom Fan",
        "disabled": false,
        "info": "",
        "env": []
    },
    {
        "id": "b9932c4c66b18537",
        "type": "tab",
        "label": "Functions",
        "disabled": false,
        "info": "",
        "env": []
    },
    {
        "id": "5be146a97e98891c",
        "type": "mqtt-broker",
        "name": "iot.fritz.box",
        "broker": "iot.fritz.box",
        "port": "1883",
        "clientid": "",
        "autoConnect": true,
        "usetls": false,
        "protocolVersion": "5",
        "keepalive": "60",
        "cleansession": true,
        "birthTopic": "",
        "birthQos": "0",
        "birthPayload": "",
        "birthMsg": {},
        "closeTopic": "",
        "closeQos": "0",
        "closePayload": "",
        "closeMsg": {},
        "willTopic": "",
        "willQos": "0",
        "willPayload": "",
        "willMsg": {},
        "sessionExpiry": ""
    },
    {
        "id": "4039bc1ca3cd6e11",
        "type": "comment",
        "z": "490116e54af5ff9a",
        "name": "Check for new Sun Events",
        "info": "",
        "x": 150,
        "y": 40,
        "wires": []
    },
    {
        "id": "ce5504b6991f8bf4",
        "type": "inject",
        "z": "490116e54af5ff9a",
        "name": "Every 12h",
        "props": [
            {
                "p": "topic",
                "vt": "str"
            }
        ],
        "repeat": "43200",
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        "once": true,
        "onceDelay": "1",
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        "x": 110,
        "y": 80,
        "wires": [
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    {
        "id": "5151002c9539d2d6",
        "type": "change",
        "z": "490116e54af5ff9a",
        "name": "Set Location",
        "rules": [
            {
                "t": "set",
                "p": "payload.latitude",
                "pt": "msg",
                "to": "47.6",
                "tot": "str"
            },
            {
                "t": "set",
                "p": "payload.longitude",
                "pt": "msg",
                "to": "9.4",
                "tot": "str"
            }
        ],
        "action": "",
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        "from": "",
        "to": "",
        "reg": false,
        "x": 270,
        "y": 80,
        "wires": [
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                "bc6e8bf098875279"
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    {
        "id": "bc6e8bf098875279",
        "type": "sun events",
        "z": "490116e54af5ff9a",
        "testmode": false,
        "verbose": "N",
        "topic": "",
        "name": "Sun Events",
        "x": 430,
        "y": 80,
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        "type": "switch",
        "z": "490116e54af5ff9a",
        "name": "On Sunrise",
        "property": "sunevent",
        "propertyType": "global",
        "rules": [
            {
                "t": "eq",
                "v": "sunrise",
                "vt": "str"
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        ],
        "checkall": "false",
        "repair": false,
        "outputs": 1,
        "x": 650,
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    {
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        "type": "switch",
        "z": "490116e54af5ff9a",
        "name": "On Sunset",
        "property": "sunevent",
        "propertyType": "global",
        "rules": [
            {
                "t": "eq",
                "v": "sunset",
                "vt": "str"
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        ],
        "checkall": "false",
        "repair": false,
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        "wires": [
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                "to": "bathroom/light_big",
                "tot": "str"
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        "name": "Store Sun State",
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                "to": "payload.sunevent",
                "tot": "msg"
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        ],
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        "name": "Every 30sec",
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                "vt": "str"
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        ],
        "repeat": "30",
        "crontab": "",
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        "onceDelay": "5",
        "topic": "",
        "payloadType": "date",
        "x": 120,
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        "name": "Turn On",
        "rules": [
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                "t": "set",
                "p": "payload",
                "pt": "msg",
                "to": "on",
                "tot": "str"
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        "name": "Turn Off",
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        "name": "Bathroom Small Light",
        "rules": [
            {
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                "pt": "msg",
                "to": "bathroom/light_small",
                "tot": "str"
            }
        ],
        "action": "",
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        "qos": "2",
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            {
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            {
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        "name": "IoT MQTT",
        "topic": "",
        "qos": "",
        "retain": "",
        "respTopic": "",
        "contentType": "text/plain",
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        "type": "comment",
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        "wires": []
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    {
        "id": "d185ca7a7211b37e",
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        "x": 120,
        "y": 280,
        "wires": []
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        "type": "change",
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        "name": "Set Sun State",
        "rules": [
            {
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                "p": "sunevent",
                "pt": "global",
                "to": "payload",
                "tot": "msg"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
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        "x": 540,
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        "rules": [
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                "p": "forced_light_bathroom",
                "pt": "global",
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                "tot": "str"
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The Node-RED installation is handled by an ansible script.