You can curse or idolize Apple devices, but what Apple has done very well is to integrate SmartHome components into their operating systems. For example, iOs comes with the option of controlling HomeKit devices (this is how SmartHome components are referred to in the Apple universe) via iOs.
It is also practical that you can simulate these HomeKit devices with NodeRed (and the matching Node). This allows you to control the actuators of your SmartHome from your iOs device and even display the sensor data (e.g. temperature, humidity) of the SmartHome.
The following article explains how to do this and what you need to bear in mind.
Safety instructions
I know the following notes are always kind of annoying and seem unnecessary. Unfortunately, many people who knew "better" have lost eyes, fingers or other things due to carelessness or injured themselves. Data loss is almost negligible in comparison, but even these can be really annoying. Therefore, please take five minutes to read the safety instructions. Because even the coolest project is not worth injury or other trouble.
https://www.nerdiy.de/sicherheitshinweise/
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The links to online shops listed here are so-called affiliate links. If you click on such an affiliate link and make a purchase via this link, Nerdiy.de will receive a commission from the relevant online shop or provider. The price does not change for you. If you make your purchases via these links, you support Nerdiy.de in being able to offer other useful projects in the future. 🙂
Requirements
Helpful articles:
Before you start with this article, you should have prepared the RaspberryPi so that it is accessible via the network and controllable via SSH. NodeRed must also be installed.
The following three articles describe what needs to be done to prepare the RaspberryPi:
RaspberryPi – setup for nerdiys!
RaspberryPi – The first configuration!
RaspberryPi – Control the RaspberryPi via SSH
NodeRed – Installing NodeRed on the RaspberryPi
NodeRed – Install new nodes
Required tool:
-no-
Required material:
In the following list you will find all the parts you need to implement this article.
Log into the NodeRed configuration interface
Before you can edit your NodeRed configuration, you must - if activated - first log into the NodeRed configuration interface.

Installation of the required node
So that you can simulate Homekit devices, the appropriate node must of course first be installed. To do this, install the node "node-red-contrib-homekit". How to install nodes is described in the article NodeRed – Install new nodes explained.
node-red-contrib-homekit

Read motion detector
A small example node code to be informed about the status of a motion detector could look like this. To simulate the motion detector, the "Inject" nodes "true" and "false" are installed, which simulate a motion detector-is-activated signal (true) and a motion detector-is-not-activated signal (false). You can then "connect" a motion detector to these inputs, whose signals are then displayed via HomeKit.
There is also an Inject node with the name "requestOptions". If you click on it, all the properties of this HomeKit device are displayed in the debug bar.

[{"id": "9998cf7e.5cf8e","type":"homekit-service","z":"5dcffcbc.bae6c4","accessory":"a10e8039.50d9c","name":"BewegungsmelderBad","serviceName":"MotionSensor","x":740,"y":820,"wires":[["9dcd9414.118448"]]},{"id":"18fa3044.4d02d","type":"json","z":"5dcffcbc.bae6c4","name":"","property":"payload","action":"","pretty":false,"x":550,"y":820,"wires":[["9998cf7e.5cf8e"]]},{"id":"2fea5d63.ae8852","type":"template","z":"5dcffcbc.bae6c4","name":"","field":"payload","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"{"MotionDetected":{{payload}}}","output":"str","x":400,"y":820,"wires":[["18fa3044.4d02d"]]},{"id":"c568f55f.d8e828","type":"inject","z":"5dcffcbc.bae6c4","name":"","topic":"","payload":"true","payloadType":"bool","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":190,"y":800,"wires":[["2fea5d63.ae8852"]]},{"id":"9dcd9414.118448","type":"debug","z":"5dcffcbc.bae6c4","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","x":930,"y":820,"wires":[]},{"id":"46dbd92c.8000e8", "type": "inject", "z": "5dcffcbc.bae6c4", "name":"", "topic":"", "payload": "false", "payloadType": "bool", "repeat":"", "crontab":"", "once":false, "onceDelay":0.1,"x":190,"y":840,"wires":[["2fea5d63.ae8852"]]},{"id":"39aee99f.957496","type":"comment","z":"5dcffcbc.bae6c4","name":"Bewegungsmelder als Event","info":"","x":220,"y":740,"wires":[]},{"id":"769255e1.22b44c","type":"json","z":"5dcffcbc.bae6c4","name":"","property":"payload","action":"","pretty":false,"x":550,"y":860,"wires":[["9998cf7e.5cf8e"]]},{"id":"fdd0e0c1.c5117","type":"template","z":"5dcffcbc.bae6c4","name":"options","field":"payload","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"{"foo":"bar"}","output":"str","x":400,"y":860,"wires":[["769255e1.22b44c"]]},{"id":"40c3c829.e4f308","type":"inject","z":"5dcffcbc.bae6c4","name":"requestOptions","topic":"","payload":"true","payloadType":"bool","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":220,"y":900,"wires":[["fdd0e0c1.c5117"]]},{"id":"a10e8039.50d9c", "type": "homekit-accessory", "z":"", "accessoryName": "Sensors", "pinCode": "111-11-111", "port": "32304", "manufacturer": "Nerdiy.de", "model": "Default Model", "serialNo": "Default Serial Number", "accessoryType": "10"}]
For this NodeCode to work, you still need to configure the HomeKit accessory and the service. To do this, double-click on the "Motion detector bathroom" node. This opens the following menu.


Once you have entered all this data, click on "Add" and "Done" to apply this setting. The last section of this article explains how to register the HomeKit devices in iOS.
Setting the heating thermostats
Here is an example node code of how you can forward the information from a heating thermostat to a simulated HomeKit thermostat, for example. There are (in this example) two properties that are displayed on your iOS device. One is the set target temperature and the other is the current actual temperature. Both values can be simulated via the Inject nodes. At this point, you would therefore have to replace the inject nodes with the values of your real heating thermostat.
On the other hand, the values that you send to the simulated HomeKit device via the iOS HomeKit app are output via the debug node. This is where the values to be set could be forwarded to the heating thermostat.
There is also another Inject node with the name "requestOptions". If you click on it, all the properties of this HomeKit device are displayed in the debug bar.

[{"id":"b3001d65.5105f","type":"comment","z":"5dcffcbc.bae6c4","name":"Heizungsthermostate steuern","info":"","x":220,"y":1300,"wires":[]},{"id":"b12f3ad3.c1ef68","type":"homekit-service","z":"5dcffcbc.bae6c4","accessory":"39b8cf37.35a27","name":"Heizung","serviceName":"Thermostat","x":740,"y":1480,"wires":[["3cb1fd5c.fd60c2"]]},{"id":"8d9e79f3.0de618","type":"json","z":"5dcffcbc.bae6c4","name":"","property":"payload","action":"","pretty":false,"x":590,"y":1480,"wires":[["b12f3ad3.c1ef68"]]},{"id":"7e9e340b.320a5c", "type": "template", "z": "5dcffcbc.bae6c4","name":"Soll-Temp","field":"payload","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"{"TargetTemperature": {{payload}}}","output":"str","x":420,"y":1460,"wires":[["8d9e79f3.0de618"]]},{"id":"3cb1fd5c.fd60c2","type":"change","z":"5dcffcbc.bae6c4","name":"","rules":[{"t":"set","p":"payload","pt":"msg","to":"payload.TargetTemperature","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":940,"y":1480,"wires":[["4ca89ee5.5cd2d"]]},{"id":"4ca89ee5.5cd2d","type":"debug","z":"5dcffcbc.bae6c4","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","x":1130,"y":1480,"wires":[]},{"id":"129c9403.2c229c","type":"template","z":"5dcffcbc.bae6c4","name":"Ist-Temp","field":"payload","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"{"CurrentTemperature":{{payload}}}","output":"str","x":420,"y":1500,"wires":[["8d9e79f3.0de618"]]},{"id":"182c1f88.f4e04","type":"inject","z":"5dcffcbc.bae6c4","name":"","topic":"","payload":"30","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":230,"y":1600,"wires":[["129c9403.2c229c"]]},{"id":"93979569.ae6e68","type":"inject","z":"5dcffcbc.bae6c4","name":"","topic":"","payload":"20","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":230,"y":1560,"wires":[["129c9403.2c229c"]]},{"id":"f2fdf87d.6e9be8","type":"inject","z":"5dcffcbc.bae6c4","name":"","topic":"","payload":"10","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":230,"y":1520,"wires":[["129c9403.2c229c"]]},{"id":"ccdae584.bd2dd8","type":"inject","z":"5dcffcbc.bae6c4","name":"","topic":"","payload":"30","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":230,"y":1440,"wires":[["7e9e340b.320a5c"]]},{"id":"820780bd.32628","type":"inject","z":"5dcffcbc.bae6c4","name":"","topic":"","payload":"20","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":230,"y":1400,"wires":[["7e9e340b.320a5c"]]},{"id":"fafe7787.64f6c8","type":"inject","z":"5dcffcbc.bae6c4","name":"","topic":"","payload":"10","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":230,"y":1360,"wires":[["7e9e340b.320a5c"]]},{"id":"78c76a0a.b7b7f4","type":"json","z":"5dcffcbc.bae6c4","name":"","property":"payload","action":"","pretty":false,"x":590,"y":1620,"wires":[["b12f3ad3.c1ef68"]]},{"id":"a6b574ca.dc1c98","type":"template","z":"5dcffcbc.bae6c4","name":"options","field":"payload","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"{"foo":"bar"}","output":"str","x":440,"y":1620,"wires":[["78c76a0a.b7b7f4"]]},{"id":"63397e19.508ff", "type": "inject", "z": "5dcffcbc.bae6c4", "name": "requestOptions", "topic":"", "payload": "true", "payloadType": "bool", "repeat":"", "crontab":"", "once":false, "onceDelay":0.1,"x":260,"y":1660,"wires":[["a6b574ca.dc1c98"]]},{"id":"39b8cf37.35a27","type":"homekit-accessory","z":"","accessoryName":"Heizung","pinCode":"111-11-111","port":"32305","manufacturer":"Nerdiy.de","model":"Default Model","serialNo":"Default Serial Number","accessoryType":"9"}]
As with the motion detector, you also need to configure the HomeKit accessory and the service for this NodeCode. To do this, double-click on the "Heating" node. This will open the following menu again.


Read out temperature and humidity sensors
This NodeCode example shows how to simulate a humidity and temperature sensor with the HomeKit node. The HomeKit node uses the data from "openweathermap" as a "data source". This means that the current temperatures of the location set in the openweathermap node are displayed.
As with all other examples, there is also an Inject node with the name "requestOptions". If you click on it, all the properties of this HomeKit device are displayed in the debug bar.

[{"id":"cc6c7b40.da9078","type":"homekit-service","z":"5dcffcbc.bae6c4","accessory":"bd29e027.b0d63","name":"Temperatur","serviceName":"TemperatureSensor","x":1130,"y":1100,"wires":[["7a89e1f4.1dc75"]]},{"id":"3b22973d.547ac8","type":"homekit-service","z":"5dcffcbc.bae6c4","accessory":"2dc17d94.90bc32","name":"Luftfeuchtigkeit","serviceName":"HumiditySensor","x":1140,"y":1180,"wires":[["195b33c9.57261c"]]},{"id":"7a89e1f4.1dc75","type":"debug","z":"5dcffcbc.bae6c4","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","x":1290,"y":1100,"wires":[]},{"id":"1c8b89c4.9270b6","type":"json","z":"5dcffcbc.bae6c4","name":"","property":"payload","action":"","pretty":false,"x":970,"y":1120,"wires":[["cc6c7b40.da9078"]]},{"id":"a3736df8.87e9c","type":"json","z":"5dcffcbc.bae6c4","name":"","property":"payload","action":"","pretty":false,"x":970,"y":1160,"wires":[["3b22973d.547ac8"]]},{"id":"400e1113.e2f29","type":"template","z":"5dcffcbc.bae6c4","name":"","field":"payload","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"{"CurrentRelativeHumidity":"{{payload}}"}","output":"str","x":820,"y":1160,"wires":[["a3736df8.87e9c"]]},{"id":"bf9000c2.be6a8","type":"template","z":"5dcffcbc.bae6c4","name":"","field":"payload","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"{"CurrentTemperature":"{{payload}}"}","output":"str","x":820,"y":1120,"wires":[["1c8b89c4.9270b6"]]},{"id":"195b33c9.57261c","type":"debug","z":"5dcffcbc.bae6c4","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","x":1290,"y":1180,"wires":[]},{"id":"a64825b.273ccd8","type":"change","z":"5dcffcbc.bae6c4","name":"convert","rules":[{"t":"set","p":"payload","pt":"msg","to":"data.main.temp-273.15","tot":"jsonata"}],"action":"","property":"","from":"","to":"","reg":false,"x":620,"y":1120,"wires":[["bf9000c2.be6a8"]]},{"id":"fcbc03d9.26567","type":"json","z":"5dcffcbc.bae6c4","name":"","property":"payload","action":"","pretty":false,"x":410,"y":1140,"wires":[["a64825b.273ccd8","553238c1.76cb68"]]},{"id":"9dbc96a3.21dcf8","type":"inject","z":"5dcffcbc.bae6c4","name":"","topic":"","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":200,"y":1080,"wires":[["2d6b39b3.dc72f6"]]},{"id":"553238c1.76cb68","type":"change","z":"5dcffcbc.bae6c4","name":"convert","rules":[{"t":"set","p":"payload","pt":"msg","to":"data.main.humidity","tot":"jsonata"}],"action":"","property":"","from":"","to":"","reg":false,"x":620,"y":1160,"wires":[["400e1113.e2f29"]]},{"id":"2d6b39b3.dc72f6","type":"openweathermap","z":"5dcffcbc.bae6c4","name":"","wtype":"current","lon":"","lat":"","city":"Bochum","country":"Germany","language":"de","x":400,"y":1080,"wires":[["fcbc03d9.26567"]]},{"id":"66e6d0.bca8793","type":"comment","z":"5dcffcbc.bae6c4","name":"Klimasensoren auslesen","info":"","x":210,"y":1000,"wires":[]},{"id":"648f2c18.d730f4","type":"json","z":"5dcffcbc.bae6c4","name":"","property":"payload","action":"","pretty":false,"x":970,"y":1200,"wires":[["3b22973d.547ac8"]]},{"id":"f5f3fc95.8afe2","type":"template","z":"5dcffcbc.bae6c4","name":"options","field":"payload","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"{"foo":"bar"}","output":"str","x":820,"y":1200,"wires":[["648f2c18.d730f4"]]},{"id":"4a9292b6.a69abc","type":"inject","z":"5dcffcbc.bae6c4","name":"requestOptions","topic":"","payload":"true","payloadType":"bool","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":640,"y":1200,"wires":[["f5f3fc95.8afe2"]]},{"id":"31aa55d1.30fa6a","type":"json","z":"5dcffcbc.bae6c4","name":"","property":"payload","action":"","pretty":false,"x":970,"y":1080,"wires":[["cc6c7b40.da9078"]]},{"id":"d0d837e2.311f88","type":"template","z":"5dcffcbc.bae6c4","name":"options","field":"payload","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"{"foo":"bar"}","output":"str","x":820,"y":1080,"wires":[["31aa55d1.30fa6a"]]},{"id":"c13c8c2f.1991c", "type": "inject", "z": "5dcffcbc.bae6c4", "name": "requestOptions", "topic":"", "payload": "true", "payloadType": "bool", "repeat":"", "crontab":"", "once":false, "onceDelay":0.1,"x":640,"y":1080,"wires":[["d0d837e2.311f88"]]},{"id":"bd29e027.b0d63","type":"homekit-accessory","z":"","accessoryName":"Temperatur","pinCode":"111-11-111","port":"32300","manufacturer":"Nerdiy.de", "model": "Default Model", "serialNo": "Default Serial Number", "accessoryType": "10"},{"id": "2dc17d94.90bc32", "type": "homekit-accessory", "z":"", "accessoryName": "Humidity", "pinCode": "111-11-111", "port": "32301", "manufacturer": "Nerdiy.de", "model": "Default Model", "serialNo": "Default Serial Number", "accessoryType": "10"}]
As with the previous examples, you also need to configure the HomeKit accessory and the service for this NodeCode. To do this, double-click on the "Humidity" or "Temperature" node. This will open the following menu again.




Control (Tasmota) lamps
Here is an example of how you can link a lamp with the Tasmota firmware to the HomeKit node so that all changes from all sources are always transferred to all input options. This makes it possible to set the color, brightness or general on/off setting in iOS or in the dashboard or via another way and at the same time the current status is also transmitted to all setting options.
In order for this NodeCode to work for you, you also need the Sonoff node and must configure it accordingly (to match your Sonoff device).

[{"id":"b200ae52.6003d","type":"comment","z":"5dcffcbc.bae6c4","name":"Tasmota RGB-LED-Steuerung","info":"","x":220,"y":80,"wires":[]},{"id":"a42e8481.c58778","type":"ui_switch","z":"5dcffcbc.bae6c4","name":"","label":"MiniLichterkette","group":"ca676059.8e72e","order":12,"width":0,"height":0,"passthru":false,"decouple":"true","topic":"","style":"","onvalue":"true","onvalueType":"bool","onicon":"","oncolor":"","offvalue":"false","offvalueType":"bool","officon":"","offcolor":"","x":820,"y":220,"wires":[["fd8991ee.f7fd1"]]},{"id":"73405495.f1e9cc","type":"homekit-service","z":"5dcffcbc.bae6c4","accessory":"753c6646.f99048","name":"MiniLichterkette","serviceName":"Lightbulb","x":200,"y":160,"wires":[["94a1b366.5c039","9b6599ac.52e878"]]},{"id":"94a1b366.5c039","type":"change","z":"5dcffcbc.bae6c4","name":"convert","rules":[{"t":"set","p":"payload","pt":"msg","to":"payload.On","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":400,"y":160,"wires":[["fd8991ee.f7fd1"]]},{"id":"9e961d23.1c88b","type":"ui_colour_picker","z":"5dcffcbc.bae6c4","name":"","label":"MiniLichterkette","group":"ca676059.8e72e","format":"hsl","outformat":"object","showSwatch":true,"showPicker":true,"showValue":true,"showHue":true,"showAlpha":true,"showLightness":true,"dynOutput":"false","order":25,"width":0,"height":0,"passthru":false,"topic":"","x":200,"y":520,"wires":[["be8d6249.9bab5"]]},{"id":"6c5cc00.0eed54","type":"ui_slider","z":"5dcffcbc.bae6c4","name":"","label":"MiniLichterkette","group":"ca676059.8e72e","order":0,"width":0,"height":0,"passthru":false,"topic":"","min":0,"max":"100","step":1,"x":200,"y":380,"wires":[["2dabaae2.c1e016"]]},{"id":"20784c5.660aab4","type":"template","z":"5dcffcbc.bae6c4","name":"","field":"payload","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"{"Brightness":"{{payload.l}}","Hue":"{{payload.h}}", "Saturation":"{{payload.s}}", "On": true}","output":"str","x":580,"y":520,"wires":[["e8458a57.465e58"]]},{"id":"e8458a57.465e58","type":"json","z":"5dcffcbc.bae6c4","name":"","property":"payload","action":"","pretty":false,"x":730,"y":520,"wires":[["73405495.f1e9cc"]]},{"id":"3bd94571.32107a","type":"mqtt out","z":"5dcffcbc.bae6c4","name":"Set Hue","topic":"cmnd/MiniLichterkette/HsbColor1","qos":"","retain":"","broker":"aa8ea139.37c07","x":800,"y":280,"wires":[]},{"id":"c8c9c8e5.fccc08","type":"mqtt out","z":"5dcffcbc.bae6c4","name":"Set Saturation","topic":"cmnd/MiniLichterkette/HsbColor2","qos":"","retain":"","broker":"aa8ea139.37c07","x":820,"y":400,"wires":[]},{"id":"be920697.1bc058","type":"mqtt out","z":"5dcffcbc.bae6c4","name":"Set Brightness","topic":"cmnd/MiniLichterkette/HsbColor3","qos":"","retain":"","broker":"aa8ea139.37c07","x":820,"y":340,"wires":[]},{"id":"9b6599ac.52e878","type":"function","z":"5dcffcbc.bae6c4","name":"Split Color Values","func":"if (msg.payload.Hue!==undefined) { msg.payload=msg.payload.Hue; return [ msg, null, null ]; } if (msg.payload.Brightness!==undefined) { msg.payload=msg.payload.Brightness; return [null, msg, null ]; } if (msg.payload.Saturation!==undefined) { msg.payload=msg.payload.Saturation; return [ null, null, msg ]; }","outputs":3,"noerr":0,"x":470,"y":220,"wires":[["3bd94571.32107a"],["be920697.1bc058"],["c8c9c8e5.fccc08"]]},{"id":"15bdce9b.ac1781","type":"mqtt in","z":"5dcffcbc.bae6c4","name":"dimmerState","topic":"stat/MiniLichterkette/RESULT","qos":"2","broker":"aa8ea139.37c07","x":190,"y":440,"wires":[["441ae395.5fbfcc"]]},{"id":"441ae395.5fbfcc","type":"json","z":"5dcffcbc.bae6c4","name":"","property":"payload","action":"","pretty":false,"x":350,"y":440,"wires":[["5918dc5d.eee394"]]},{"id":"5918dc5d.eee394","type":"change","z":"5dcffcbc.bae6c4","name":"","rules":[{"t":"set","p":"payload","pt":"msg","to":"payload.Dimmer","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":520,"y":440,"wires":[["6c5cc00.0eed54"]]},{"id":"96cbb503.343228","type":"json","z":"5dcffcbc.bae6c4","name":"","property":"payload","action":"","pretty":false,"x":530,"y":380,"wires":[["73405495.f1e9cc"]]},{"id":"2dabaae2.c1e016","type":"template","z":"5dcffcbc.bae6c4","name":"","field":"payload","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"{"Brightness":"{{payload}}"}","output":"str","x":380,"y":380,"wires":[["96cbb503.343228"]]},{"id":"be8d6249.9bab5","type":"function","z":"5dcffcbc.bae6c4","name":"map","func":"msg.payload.l=msg.payload.l*100; msg.payload.s=msg.payload.s*100; return msg;","outputs":1,"noerr":0,"x":430,"y":520,"wires":[["20784c5.660aab4"]]},{"id":"bf36bff2.3d98f","type":"mqtt in","z":"5dcffcbc.bae6c4","name":"colorState","topic":"stat/MiniLichterkette/RESULT","qos":"2","broker":"aa8ea139.37c07","x":180,"y":580,"wires":[["d85429c0.4501c8","852254eb.6c9668"]]},{"id":"852254eb.6c9668","type":"json","z":"5dcffcbc.bae6c4","name":"","property":"payload","action":"","pretty":false,"x":330,"y":580,"wires":[["be6203d4.c9e66"]]},{"id":"4a52a0ca.93eac","type":"function","z":"5dcffcbc.bae6c4","name":"convert Color","func":"//var input=msg.payload.HSBColor; let values=msg.payload.HSBColor.split(","); msg.payload.h=values[0]; msg.payload.s=values[1]/100; msg.payload.l=values[2]/100; return msg;","outputs":1,"noerr":0,"x":610,"y":580,"wires":[["9e961d23.1c88b"]]},{"id":"be6203d4.c9e66","type":"switch","z":"5dcffcbc.bae6c4","name":"","property":"payload.HSBColor","propertyType":"msg","rules":[{"t":"nnull"}],"checkall":"true","repair":false,"outputs":1,"x":450,"y":580,"wires":[["db3e37fb.97a5f8","4a52a0ca.93eac"]]},{"id":"fd8991ee.f7fd1","type":"Sonoff device","z":"5dcffcbc.bae6c4","mode":"0","broker":"665cb0c4.3e438","device":"MiniLichterkette","name":"","onValue":"ON","offValue":"OFF","cmdPrefix":"cmnd","statPrefix":"stat","telePrefix":"tele","x":810,"y":160,"wires":[["a42e8481.c58778"]]},{"id":"b3771bf1.2acd78","type":"json","z":"5dcffcbc.bae6c4","name":"","property":"payload","action":"","pretty":false,"x":550,"y":120,"wires":[["73405495.f1e9cc"]]},{"id":"5dbdb6ee.9ac9f8","type":"template","z":"5dcffcbc.bae6c4","name":"options","field":"payload","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"{"foo":"bar"}","output":"str","x":400,"y":120,"wires":[["b3771bf1.2acd78"]]},{"id":"97278e2f.5d65a","type":"inject","z":"5dcffcbc.bae6c4","name":"requestOptions","topic":"","payload":"true","payloadType":"bool","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":200,"y":120,"wires":[["5dbdb6ee.9ac9f8"]]},{"id":"d85429c0.4501c8","type":"debug","z":"5dcffcbc.bae6c4","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","x":350,"y":640,"wires":[]},{"id":"db3e37fb.97a5f8","type":"debug","z":"5dcffcbc.bae6c4","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","x":590,"y":640,"wires":[]},{"id":"ca676059.8e72e","type":"ui_group","z":"","name":"Mini-Lichterkette","tab":"d651a8eb.fefb38","disp":true,"width":"6","collapse":false},{"id":"753c6646.f99048","type":"homekit-accessory","z":"","accessoryName":"Lampen","pinCode":"111-11-111","port":"32302","manufacturer":"Nerdiy.de","model":"Default Model","serialNo":"Default Serial Number","accessoryType":"5"},{"id":"aa8ea139.37c07","type":"mqtt-broker","z":"","name":"Server-Mqtt","broker":"server.fritz.box","port":"1883","clientid":"","usetls":false,"compatmode":true,"keepalive":"60","cleansession":true,"birthTopic":"","birthQos":"0","birthPayload":"","closeTopic":"","closeQos":"0","closePayload":"","willTopic":"","willQos":"0","willPayload":""},{"id":"665cb0c4.3e438","type":"mqtt-broker","z":"","name":"","broker":"server.fritz.box","port":"1883","clientid":"","usetls":false,"compatmode":true,"keepalive":"60","cleansession":true,"birthTopic":"","birthQos":"0","birthPayload":"","closeTopic":"","closeQos":"0","closePayload":"","willTopic":"","willQos":"0","willPayload":""},{"id":"d651a8eb.fefb38","type":"ui_tab","z":"","name":"Home","icon":"dashboard"}]
As with the previous examples, you also need to configure the HomeKit accessory and the service for this NodeCode. To do this, double-click on the node (in this case) "Mini light chain". This will open the following menu again.


Control sockets
This example shows you how you can simulate a SmartHome socket with the HomeKit node. A SonoffS26 socket is used here which (like the lamp in the previous example) is "equipped" with the Tasmota firmware. How to program such a socket with the Tasmota firmware and control it via Node-Red is described in the article Tasmota – Flash Sonoff S26 socket with Tasmota firmware described.
As with all other examples, there is also an Inject node with the name "requestOptions". If you click on it, all the properties of this HomeKit device are displayed in the debug bar.

[{"id":"d6d0d8e6.785448","type":"comment","z":"5dcffcbc.bae6c4","name":"Steckdose","info":"","x":180,"y":1800,"wires":[]},{"id":"bad38f27.a93b4","type":"ui_switch","z":"5dcffcbc.bae6c4","name":"","label":"Steckdose","group":"16663fb4.9e351", "order":20, "width":0, "height":0, "passthru":false, "decouple": "true", "topic":"", "style":"", "onvalue": "true", "onvalueType":"bool","onicon":"","oncolor":"","offvalue":"false","offvalueType":"bool","officon":"","offcolor":"","x":670,"y":1920,"wires":[["f1118c1c.95804"]]},{"id":"f1118c1c.95804","type":"Sonoff device","z":"5dcffcbc.bae6c4","mode":"0","broker":"1fafbb1c.a2df75","device":"SonoffS26","name":"","onValue":"ON","offValue":"OFF","cmdPrefix":"cmnd","statPrefix":"stat","telePrefix":"tele","x":660,"y":1860,"wires":[["bad38f27.a93b4"]]},{"id":"a4cdda.44b67228","type":"homekit-service","z":"5dcffcbc.bae6c4","accessory":"b7e7d023.40f38","name":"Steckdose","serviceName":"Outlet","x":250,"y":1860,"wires":[["307b902a.ca26b"]]},{"id":"307b902a.ca26b","type":"change","z":"5dcffcbc.bae6c4","name":"convert","rules":[{"t":"set","p":"payload","pt":"msg","to":"payload.On","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":440,"y":1860,"wires":[["f1118c1c.95804"]]},{"id":"fb3c28d1.cb8da8","type":"json","z":"5dcffcbc.bae6c4","name":"","property":"payload","action":"","pretty":false,"x":570,"y":1980,"wires":[["a4cdda.44b67228"]]},{"id":"811d7998.a861e8","type":"template","z":"5dcffcbc.bae6c4","name":"options","field":"payload","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"{"foo":"bar"}","output":"str","x":420,"y":1980,"wires":[["fb3c28d1.cb8da8"]]},{"id":"6bdad444.d1270c","type":"inject","z":"5dcffcbc.bae6c4","name":"requestOptions","topic":"","payload":"true","payloadType":"bool","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":260,"y":1980,"wires":[["811d7998.a861e8"]]},{"id":"16663fb4.9e351","type":"ui_group","z":"","name":"Licht","tab":"e5c99d4.147226","order":2,"disp":true,"width":"6","collapse":false},{"id":"1fafbb1c.a2df75", "type": "mqtt-broker", "z":"", "name": "Server-Mqtt", "broker": "server.fritz.box", "port": "1883", "clientid":"", "usetls":false, "compatmode":true, "keepalive": "60", "cleansession":true, "birthTopic":"", "birthQos":"0","birthPayload":"","closeTopic":"","closeQos":"0","closePayload":"","willTopic":"","willQos":"0","willPayload":""},{"id":"b7e7d023.40f38","type":"homekit-accessory","z":"","accessoryName":"Steckdosen","pinCode":"111-11-111","port":"32303","manufacturer":"Nerdiy.de","model":"Default Model","serialNo":"Default Serial Number","accessoryType":"7"},{"id":"e5c99d4.147226","type":"ui_tab","z":"","name":"Home","icon":"dashboard","order":1}]
Here too (surprise 🙂 ) - as with the previous examples - you need to configure the HomeKit accessory and the service. To do this, double-click on the "Socket" node. This will open the following menu again.


Find out the setting options and properties of the devices
Some examples have an Inject node with the name "requestOptions". You can use this to display the available properties of the respective HomeKit node. You can then use these properties to set the simulated HomeKit device. For example, the HomeKit node that controls the "mini fairy lights" has the option of setting the ColorTermperature. If you set the property, the corresponding value is displayed in HomeKit.

Setup on the iPhone
Once you have created your desired HomeKit devices in NodeRed, it is now time to register them on the iOS device. In this section you will be guided (somewhat) step by step through the registration process. As this sometimes involves a lot of pictures, the following steps are summarized as slide shows.


Air humidity
To start the registration of a humidity sensor, click on "Add Accessory" as indicated in the previous step.
Heating thermostats
To start the registration of the heating thermostat, click on "Add Accessory" - as in the previous step - and then on "Don't Have a Code or Can't Scan".
(Tasmota) lamp
To start the registration of the lamp, click on "Add Accessory" - as in the previous step - and then on "Don't Have a Code or Can't Scan".
(Tasmota) socket
To start the registration of the socket, click on "Add Accessory" - as in the previous step - and then on "Don't Have a Code or Can't Scan".
Temperature sensor
To start the registration of the temperature sensor, click on "Add Accessory" - as in the previous step - and then on "Don't Have a Code or Can't Scan".
Motion detector
To start the registration of the motion detector, click on "Add Accessory" - as in the previous step - and then on "Don't Have a Code or Can't Scan".
You may have already noticed: With this iOs Node you have all kinds of possibilities. Just try it out a bit. If you have any questions, please leave them in the comments.
Have fun with the project
I hope everything worked as described for you. If not or you have questions or suggestions please let me know in the comments. I will then add this to the article if necessary.
Ideas for new projects are always welcome. 🙂
PS Many of these projects - especially the hardware projects - cost a lot of time and money. Of course I do this because I enjoy it, but if you think it's cool that I share the information with you, I would be happy about a small donation to the coffee fund. 🙂
Hi Nerdy,
cool site and cool projects! I have already implemented a few things in my smart home (KNX, bridge to HomeKit, Node Red etc.) and still have a lot planned. Been trying to use the HomeKit Bridge from Node Red for a while. I also get the nodes set up and configured so that I can then set up a device in the HomeKit app as a test. Unfortunately, the whole thing is not stable, the connection breaks regularly and Node Red also restarts itself regularly, ie something in the Homekit bridge node causes the crash. Do you also have this problem or do you have an idea what could be the reason?
Greetings Turner
hey gymnast,
thanks 🙂
Unfortunately I don't know exactly what could be the reason. However, in the past I had the problem that my NodeRed installation kept restarting for some reason. To make debugging a little easier, I created a flow that saves the last journal of the NodeRed process after restarting NodeRed. So you can see quite well at which point NodeRed crashed and fix the error. 🙂
You can find information about this here: https://nerdiy.de/howto-nodered-automatisches-speichern-des-nodered-journals-nach-dem-start-von-nodered-zu-debugging-zwecken/
Best regards
Fabian
Hello Fab,
really cool site. I'm currently working on the flow for the heating thermostats, the import also worked wonderfully. I'm kind of stuck right now and have a few questions:
1. Can I use any heating thermostat or does it have to be an Apple Homkit capable since I am simulating a Homekit?
2. How does Node red "know" that I have a thermostat, does it not have to be transferred to the WiFi somehow?
3. Depending on the thermostat, do I need the appropriate bridge, or can this be done without the appropriate bridge?
Thank you in advance for your replies, as I said, I don't know what to do next.
Maybe you can also email me detailed instructions on how to proceed with the new thermostat from start to finish.
I'd be happy to hear from you.
LG 🙂
Hi Daniel,
1. In principle, this can be any heating thermostat, yes. Of course, it must be supported by NodeRed or be able to be controlled in some other way. 🙂
2. Depending on what kind of thermostat you have, it is either integrated via DECT (with the Fritzbox), zigbee or another standard. Sometimes you also need a suitable gateway.
3. If you already have a FritzBox, I recommend one of the radiator thermostats that is compatible with the FritzBox. Information (including how to integrate it) can be found here, for example: https://nerdiy.de/howto-nodered-fritzbox-heizkoerperthermostat-aus-nodered-steuern/
I hope this will help you. Otherwise please let me know. 🙂
Best regards
Fabian