Node-RED

Point 'n' Click workflow automation
Project started on November 01, 2021.
Last updated on May 23, 2022.

...back to Smart Home overview

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.

Switching the lights
Keeping fan always on
Helper function for MQTT

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

[
    {
        "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",
        "crontab": "",
        "once": true,
        "onceDelay": "1",
        "topic": "",
        "x": 110,
        "y": 80,
        "wires": [
            [
                "5151002c9539d2d6"
            ]
        ]
    },
    {
        "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": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 270,
        "y": 80,
        "wires": [
            [
                "bc6e8bf098875279"
            ]
        ]
    },
    {
        "id": "bc6e8bf098875279",
        "type": "sun events",
        "z": "490116e54af5ff9a",
        "testmode": false,
        "verbose": "N",
        "topic": "",
        "name": "Sun Events",
        "x": 430,
        "y": 80,
        "wires": [
            [
                "4384fcd3b3567c6c",
                "9c21e093193d54e4"
            ]
        ]
    },
    {
        "id": "d8f1896d6ed5ca0d",
        "type": "switch",
        "z": "490116e54af5ff9a",
        "name": "On Sunrise",
        "property": "sunevent",
        "propertyType": "global",
        "rules": [
            {
                "t": "eq",
                "v": "sunrise",
                "vt": "str"
            }
        ],
        "checkall": "false",
        "repair": false,
        "outputs": 1,
        "x": 650,
        "y": 260,
        "wires": [
            [
                "98d848700eaa119d",
                "76965df29f0c2651"
            ]
        ]
    },
    {
        "id": "d17e0c1b295d531a",
        "type": "switch",
        "z": "490116e54af5ff9a",
        "name": "On Sunset",
        "property": "sunevent",
        "propertyType": "global",
        "rules": [
            {
                "t": "eq",
                "v": "sunset",
                "vt": "str"
            }
        ],
        "checkall": "false",
        "repair": false,
        "outputs": 1,
        "x": 650,
        "y": 300,
        "wires": [
            [
                "3e4a16697db5b83d",
                "6df166fb14211461"
            ]
        ]
    },
    {
        "id": "895f005abb0c7a30",
        "type": "change",
        "z": "490116e54af5ff9a",
        "name": "Bathroom Big Light",
        "rules": [
            {
                "t": "set",
                "p": "topic",
                "pt": "msg",
                "to": "bathroom/light_big",
                "tot": "str"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 1030,
        "y": 240,
        "wires": [
            [
                "c8246e3ed2f6ac51"
            ]
        ]
    },
    {
        "id": "c8246e3ed2f6ac51",
        "type": "link call",
        "z": "490116e54af5ff9a",
        "name": "",
        "links": [
            "fd3c7a7a7a3b2e99"
        ],
        "timeout": "30",
        "x": 1280,
        "y": 580,
        "wires": [
            []
        ]
    },
    {
        "id": "bbd4b1ede10ea09e",
        "type": "change",
        "z": "490116e54af5ff9a",
        "name": "Bathroom Small Light",
        "rules": [
            {
                "t": "set",
                "p": "topic",
                "pt": "msg",
                "to": "bathroom/light_small",
                "tot": "str"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 1040,
        "y": 360,
        "wires": [
            [
                "c8246e3ed2f6ac51"
            ]
        ]
    },
    {
        "id": "0516f39aac309884",
        "type": "change",
        "z": "490116e54af5ff9a",
        "name": "Store Sun State",
        "rules": [
            {
                "t": "set",
                "p": "sunevent",
                "pt": "global",
                "to": "payload.sunevent",
                "tot": "msg"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 800,
        "y": 80,
        "wires": [
            [
                "23bd87871e2f0ecb"
            ]
        ]
    },
    {
        "id": "86248602292b2932",
        "type": "inject",
        "z": "490116e54af5ff9a",
        "name": "Every 30sec",
        "props": [
            {
                "p": "payload"
            },
            {
                "p": "topic",
                "vt": "str"
            }
        ],
        "repeat": "30",
        "crontab": "",
        "once": true,
        "onceDelay": "5",
        "topic": "",
        "payloadType": "date",
        "x": 120,
        "y": 540,
        "wires": [
            [
                "ce6a5620f1e6af76"
            ]
        ]
    },
    {
        "id": "98d848700eaa119d",
        "type": "change",
        "z": "490116e54af5ff9a",
        "name": "Turn On",
        "rules": [
            {
                "t": "set",
                "p": "payload",
                "pt": "msg",
                "to": "on",
                "tot": "str"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 860,
        "y": 240,
        "wires": [
            [
                "895f005abb0c7a30"
            ]
        ]
    },
    {
        "id": "76965df29f0c2651",
        "type": "change",
        "z": "490116e54af5ff9a",
        "name": "Turn Off",
        "rules": [
            {
                "t": "set",
                "p": "payload",
                "pt": "msg",
                "to": "off",
                "tot": "str"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 860,
        "y": 280,
        "wires": [
            [
                "b7ea8636c374cd25"
            ]
        ]
    },
    {
        "id": "b7ea8636c374cd25",
        "type": "change",
        "z": "490116e54af5ff9a",
        "name": "Bathroom Small Light",
        "rules": [
            {
                "t": "set",
                "p": "topic",
                "pt": "msg",
                "to": "bathroom/light_small",
                "tot": "str"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 1040,
        "y": 280,
        "wires": [
            [
                "c8246e3ed2f6ac51"
            ]
        ]
    },
    {
        "id": "3e4a16697db5b83d",
        "type": "change",
        "z": "490116e54af5ff9a",
        "name": "Turn On",
        "rules": [
            {
                "t": "set",
                "p": "payload",
                "pt": "msg",
                "to": "on",
                "tot": "str"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 860,
        "y": 360,
        "wires": [
            [
                "bbd4b1ede10ea09e"
            ]
        ]
    },
    {
        "id": "6df166fb14211461",
        "type": "change",
        "z": "490116e54af5ff9a",
        "name": "Turn Off",
        "rules": [
            {
                "t": "set",
                "p": "payload",
                "pt": "msg",
                "to": "off",
                "tot": "str"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 860,
        "y": 400,
        "wires": [
            [
                "8c16ac287cbf877c"
            ]
        ]
    },
    {
        "id": "8c16ac287cbf877c",
        "type": "change",
        "z": "490116e54af5ff9a",
        "name": "Bathroom Big Light",
        "rules": [
            {
                "t": "set",
                "p": "topic",
                "pt": "msg",
                "to": "bathroom/light_big",
                "tot": "str"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 1030,
        "y": 400,
        "wires": [
            [
                "c8246e3ed2f6ac51"
            ]
        ]
    },
    {
        "id": "6af17a7135211b49",
        "type": "comment",
        "z": "490116e54af5ff9a",
        "name": "Set Lights",
        "info": "",
        "x": 100,
        "y": 500,
        "wires": []
    },
    {
        "id": "23bd87871e2f0ecb",
        "type": "debug",
        "z": "490116e54af5ff9a",
        "name": "Sun Event Data",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "sunevent",
        "targetType": "msg",
        "statusVal": "",
        "statusType": "auto",
        "x": 980,
        "y": 80,
        "wires": []
    },
    {
        "id": "9c21e093193d54e4",
        "type": "switch",
        "z": "490116e54af5ff9a",
        "name": "Is Sunrise?",
        "property": "payload.sunevent",
        "propertyType": "msg",
        "rules": [
            {
                "t": "eq",
                "v": "sunrise",
                "vt": "str"
            }
        ],
        "checkall": "true",
        "repair": false,
        "outputs": 1,
        "x": 610,
        "y": 120,
        "wires": [
            [
                "0516f39aac309884"
            ]
        ]
    },
    {
        "id": "4384fcd3b3567c6c",
        "type": "switch",
        "z": "490116e54af5ff9a",
        "name": "Is Sunset?",
        "property": "payload.sunevent",
        "propertyType": "msg",
        "rules": [
            {
                "t": "eq",
                "v": "sunset",
                "vt": "str"
            }
        ],
        "checkall": "true",
        "repair": false,
        "outputs": 1,
        "x": 610,
        "y": 80,
        "wires": [
            [
                "0516f39aac309884"
            ]
        ]
    },
    {
        "id": "669b4c826982a274",
        "type": "comment",
        "z": "490116e54af5ff9a",
        "name": "Only store relevant states",
        "info": "",
        "x": 630,
        "y": 40,
        "wires": []
    },
    {
        "id": "125e5ada06d3bb84",
        "type": "mqtt in",
        "z": "490116e54af5ff9a",
        "name": "Forced Light",
        "topic": "bathroom/force_light",
        "qos": "2",
        "datatype": "auto",
        "broker": "5be146a97e98891c",
        "nl": false,
        "rap": true,
        "rh": 0,
        "inputs": 0,
        "x": 110,
        "y": 260,
        "wires": [
            [
                "0e7e6ebfd46450f7",
                "12082b0fb4909c57",
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        ]
    },
    {
        "id": "0e7e6ebfd46450f7",
        "type": "change",
        "z": "490116e54af5ff9a",
        "name": "Store Forced Light State",
        "rules": [
            {
                "t": "set",
                "p": "forced_light_bathroom",
                "pt": "global",
                "to": "payload",
                "tot": "msg"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 370,
        "y": 260,
        "wires": [
            [
                "ce6a5620f1e6af76"
            ]
        ]
    },
    {
        "id": "3bcc8e43c0acccd5",
        "type": "comment",
        "z": "490116e54af5ff9a",
        "name": "Allow overriding light schedule",
        "info": "",
        "x": 160,
        "y": 220,
        "wires": []
    },
    {
        "id": "12082b0fb4909c57",
        "type": "change",
        "z": "490116e54af5ff9a",
        "name": "Store Time of forcing",
        "rules": [
            {
                "t": "set",
                "p": "forced_light_bathroom_time",
                "pt": "global",
                "to": "",
                "tot": "date"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 360,
        "y": 300,
        "wires": [
            []
        ]
    },
    {
        "id": "ce6a5620f1e6af76",
        "type": "switch",
        "z": "490116e54af5ff9a",
        "name": "Lights Forced?",
        "property": "forced_light_bathroom",
        "propertyType": "global",
        "rules": [
            {
                "t": "eq",
                "v": "none",
                "vt": "str"
            },
            {
                "t": "eq",
                "v": "off",
                "vt": "str"
            },
            {
                "t": "eq",
                "v": "big",
                "vt": "str"
            },
            {
                "t": "eq",
                "v": "small",
                "vt": "str"
            }
        ],
        "checkall": "true",
        "repair": false,
        "outputs": 4,
        "x": 400,
        "y": 540,
        "wires": [
            [
                "d8f1896d6ed5ca0d",
                "d17e0c1b295d531a"
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            [
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    },
    {
        "id": "6ed0af4d2180e6c1",
        "type": "comment",
        "z": "490116e54af5ff9a",
        "name": "Set Lights according to Sun Schedule",
        "info": "",
        "x": 730,
        "y": 200,
        "wires": []
    },
    {
        "id": "9241d0a69fa0e0ba",
        "type": "change",
        "z": "490116e54af5ff9a",
        "name": "Turn Off",
        "rules": [
            {
                "t": "set",
                "p": "payload",
                "pt": "msg",
                "to": "off",
                "tot": "str"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 640,
        "y": 480,
        "wires": [
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                "5118b6346eb963da",
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    },
    {
        "id": "169b79020e5cc427",
        "type": "change",
        "z": "490116e54af5ff9a",
        "name": "Bathroom Small Light",
        "rules": [
            {
                "t": "set",
                "p": "topic",
                "pt": "msg",
                "to": "bathroom/light_small",
                "tot": "str"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 840,
        "y": 480,
        "wires": [
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    },
    {
        "id": "5118b6346eb963da",
        "type": "change",
        "z": "490116e54af5ff9a",
        "name": "Bathroom Big Light",
        "rules": [
            {
                "t": "set",
                "p": "topic",
                "pt": "msg",
                "to": "bathroom/light_big",
                "tot": "str"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 830,
        "y": 520,
        "wires": [
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    },
    {
        "id": "a4d3930695a8574e",
        "type": "comment",
        "z": "490116e54af5ff9a",
        "name": "Forced Off",
        "info": "",
        "x": 640,
        "y": 440,
        "wires": []
    },
    {
        "id": "617d2b7904f23127",
        "type": "comment",
        "z": "490116e54af5ff9a",
        "name": "Forced Big Light",
        "info": "",
        "x": 660,
        "y": 600,
        "wires": []
    },
    {
        "id": "0106c313423b119b",
        "type": "change",
        "z": "490116e54af5ff9a",
        "name": "Turn Off",
        "rules": [
            {
                "t": "set",
                "p": "payload",
                "pt": "msg",
                "to": "off",
                "tot": "str"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 640,
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        "wires": [
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    },
    {
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        "name": "Bathroom Small Light",
        "rules": [
            {
                "t": "set",
                "p": "topic",
                "pt": "msg",
                "to": "bathroom/light_small",
                "tot": "str"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 820,
        "y": 640,
        "wires": [
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        ]
    },
    {
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        "type": "change",
        "z": "490116e54af5ff9a",
        "name": "Turn On",
        "rules": [
            {
                "t": "set",
                "p": "payload",
                "pt": "msg",
                "to": "on",
                "tot": "str"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 640,
        "y": 680,
        "wires": [
            [
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            ]
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    },
    {
        "id": "10e0fc6e5014f1a8",
        "type": "change",
        "z": "490116e54af5ff9a",
        "name": "Bathroom Big Light",
        "rules": [
            {
                "t": "set",
                "p": "topic",
                "pt": "msg",
                "to": "bathroom/light_big",
                "tot": "str"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 810,
        "y": 680,
        "wires": [
            [
                "c8246e3ed2f6ac51"
            ]
        ]
    },
    {
        "id": "be6439f19a674c49",
        "type": "comment",
        "z": "490116e54af5ff9a",
        "name": "Forced Small Light",
        "info": "",
        "x": 670,
        "y": 740,
        "wires": []
    },
    {
        "id": "511135c0e9357ffe",
        "type": "change",
        "z": "490116e54af5ff9a",
        "name": "Turn Off",
        "rules": [
            {
                "t": "set",
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        "type": "mqtt out",
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        "name": "IoT MQTT",
        "topic": "",
        "qos": "",
        "retain": "",
        "respTopic": "",
        "contentType": "text/plain",
        "userProps": "",
        "correl": "",
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        "type": "comment",
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        "wires": []
    },
    {
        "id": "d185ca7a7211b37e",
        "type": "link out",
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        "wires": []
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        "type": "comment",
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        "info": "",
        "x": 120,
        "y": 280,
        "wires": []
    },
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                "vt": "str"
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        "crontab": "",
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        "y": 320,
        "wires": [
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        "type": "change",
        "z": "b9932c4c66b18537",
        "name": "Set Sun State",
        "rules": [
            {
                "t": "set",
                "p": "sunevent",
                "pt": "global",
                "to": "payload",
                "tot": "msg"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 540,
        "y": 360,
        "wires": [
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    },
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        "type": "change",
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        "rules": [
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                "p": "forced_light_bathroom",
                "pt": "global",
                "to": "none",
                "tot": "str"
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        "action": "",
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        "to": "",
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        "noerr": 0,
        "initialize": "",
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The Node-RED installation is handled by an ansible script.