HowTo: Node Red - Read out the temperature of the FRITZ! DECT Repeater 100

The FRITZ! I recently bought a DECT repeater to improve the range of my DECT phones.

Leider muss meine Fritz Box im Keller stehen, weil nur dort ein passender Anschluss ans Internet möglich ist. Eigentlich kein Problem. Allerdings leidet darunter die Qualität bzw. Reichweite der DECT Verbindung zwischen Telefonhörer und FritzBox.

So I have the FRITZ! DECT Repeater 100 installed and connected to my FritzBox. The range of my DECT phones is now much better. At the same time, the repeater also extends the range of my Fritz Smart Home Geräte.

Nun war ich aber neugierig, ob ich den Repeater auf irgendeine Weise in mein Smart Home integrieren kann. Schalten kann man die vorhandene Steckdose leider nicht, da durch die im Gehäuse befindliche Steckdose nur die dauerhafte Blockierung der Steckdose verhindert werden soll.

Was sich dagegen nutzen bzw. auslesen lässt, ist die Temperatur des FRITZ! DECT Repeater 100. Dieser hat einen internen Temperatursensor, dessen Temperatur auch über die FritzBox Oberfläche angezeigt werden kann. Praktischerweise kann man diesen Temperaturwert auch über Node Red read out.

Wie Ihr vorgehen könnt um die Temperatur mithilfe von Node Red auszulesen ist im folgenden Artikel beschrieben.

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.

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Helpful articles:
So that you can install new nodes Node Red already installed of course.
How to prepare a RaspberryPi and then install Node Red on it is described in the following articles.

In the following lists you will find all the parts you need to implement this article.

Required tool:

1xScrewdriver set  Buy at Amazon
1xSD card reader  Buy at Amazon

Required material:

1x AVM FRITZ!DECT Repeater 100  Buy at Amazon
1x Raspberry Pi  Buy at Amazon
1x Raspberry Pi power supply  Buy at Amazon
1x Raspberry Pi case  Buy at Amazon
1x Micro SD card 64GB  Buy at Amazon

Read out the AIN of your FRITZ!DECT 100 and enter it in NodeRed

Damit der unten stehende Node Red code funktioniert müsst Ihr die richtige AIN in Eure Node Red Konfiguration eintragen. Die AIN ist die Identifikationsnummer Eures FRITZ DECT 100 Repeater, welche Ihr benötigt um diesen gezielt anzusteuern bzw. auslesen zu können. Wie Ihr die AIN mithilfe der FritzBox Konfigurationsoberfläche herausfinden könnt, ist in dem Artikel Fritz Box – Find out the AIN of your SmartHome device described.

Log into the NodeRed configuration interface

Before you can edit your NodeRed configuration, you must - if activated - first log into the NodeRed configuration interface.

View of the login dialog. Here you have to enter the login data that you specified during the configuration of the login. You can find information about this in the article NodeRed - set up user login.

Install the appropriate FritzBox node

Damit Node Red mit den verbundenen Repeater kommunizieren kann müsst Ihr die Node “node-red-contrib-fritzapi” installieren. Wie Ihr Nodes installiert ist im Artikel NodeRed – Install new nodes described.

Außerdem solltet Ihr die Dashboard-Node bereits installiert und konfiguriert haben. Diese wird dazu genutzt die gemessene Temperatur auf dem Dashboard darzustellen. Infos dazu findet Ihr in dem folgenden Artikel.

Node Red code for retrieving the temperature of a FRITZ!DECT 100 repeater

Mit dem weiter unten verlinkten Node Red code könnt Ihr die Temperatur Eures Fritz DECT Repeaters abrufen. Die Temperatur wir dabei auf dem Node Red Dashboard angezeigt, kann aber natürlich intern auch noch weiterverarbeitet werden.

View of the flow in the Node Red configuration view.

View of the controls in the Node Red dashboard view.

In order for the Node Red code to work, the connection between Node Red and your FritzBox should already be configured.

For this purpose, the login information for your FritzBox should be entered in the red marked area.

You can find more information about this in the article

In order to be able to use the Node Red code, you still have to enter the AIN of your Fritz DECT Repeater.

The AIN is the identification number via which the repeater is addressed. How you can find out this AIN is in the article Fritz Box – Find out the AIN of your SmartHome device described.

How you can import the NodeCode linked below into your NodeRed environment is in the article NodeRed - import and export node code described.

As always, you can find the Node Red code in the Nerdiy Git repository under the following link:

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. 🙂

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