{"id":12183,"date":"2020-10-21T17:57:36","date_gmt":"2020-10-21T15:57:36","guid":{"rendered":"https:\/\/nerdiy.de\/?p=12183"},"modified":"2021-12-18T18:05:12","modified_gmt":"2021-12-18T17:05:12","slug":"control-howto-nodered-fritzbox-radiator-thermostat-from-nodered-2","status":"publish","type":"post","link":"https:\/\/nerdiy.de\/en\/control-howto-nodered-fritzbox-radiator-thermostat-from-nodered-2\/","title":{"rendered":"HowTo: Node Red \u2013 Control the FritzBox radiator thermostat from Node Red"},"content":{"rendered":"
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I recently ordered one of the DECT radiator thermostats for the FritzBox out of curiosity.<\/p>\n\n\n\n

As usual with Fritz products, installation and commissioning was super easy. It takes less than ten minutes to install and set up. <\/p>\n\n\n\n

All kinds of options can then be set in the app and the FritzBox interface. These include fixed times at which the radiator should be switched on. Unfortunately, this option is not so practical for me. What I have always done very well in the past, however, is to switch on the heating when it is cold outside (for example, cooler than 15\u00b0C) and the TV in the living room is switched on (as a kind of presence detection). <\/p>\n\n\n\n

I wanted to have this \"dynamic\" switching behavior again. In the past, I did this with a few nodes in NodeRed. Thank goodness there is also a suitable node for controlling the Fritz heating thermostats. You just have to configure it accordingly.<\/p>\n\n\n\n

You can find an example flow for controlling a Fritz DECT radiator thermostat in this article.<\/p>\n\n\n\n

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Safety instructions <\/span><\/h2>\r\n

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https:\/\/www.nerdiy.de\/sicherheitshinweise\/<\/span><\/a><\/em><\/strong><\/p>\r\n

Affiliate links\/advertising links<\/h2>\r\n

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Requirements<\/h2>\n\n\n\n

Helpful articles:
<\/strong>So that you can install new nodes, NodeRed should of course already be installed.
How to prepare a RaspberryPi and then install NodeRed on it is described in the following articles.<\/p>\n\n\n\n

The following three articles describe what needs to be done to prepare the RaspberryPi:
RaspberryPi \u2013 setup for nerdiys!<\/a><\/em><\/strong>
RaspberryPi \u2013 The first configuration!
<\/a>RaspberryPi \u2013 Control the RaspberryPi via SSH<\/a><\/em><\/strong>
NodeRed \u2013 Installing NodeRed on the RaspberryPi<\/em><\/strong><\/a>
NodeRed - import and export node code<\/a><\/strong><\/em><\/p>\n\n\n\n

Required tool:
<\/strong>-no-<\/p>\n\n\n\n

Required material:<\/strong><\/p>\n\n\n\n

In the following list you will find all the parts you need to implement this article.<\/strong> <\/p>\n\n\n\n

\n \n \n \n \n \n \n \n \n <\/colgroup>\n <\/table>\n \n \n \n<\/div>\n\n\n\n\n
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Log into the NodeRed configuration interface<\/h2>\r\n

Before you can edit your NodeRed configuration, you must - if activated - first log into the NodeRed configuration interface.<\/p>\r\n

\"\"<\/a>
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<\/strong><\/em><\/a>.<\/figcaption><\/figure>\n\n\n\n
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Install the appropriate FritzBox node<\/h2>\n\n\n\n

In order for NodeRed to communicate with the connected radiator thermostats, you must install the node \"node-red-contrib-fritzapi\". How to install nodes is described in the article NodeRed \u2013 Install new nodes<\/em><\/a> <\/strong>described.<\/p>\n\n\n\n

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NodeCode for controlling a Fritz DECT radiator thermostat<\/h2>\n\n\n\n

The current status of the NodeCode is my first draft of a control system. I will certainly continue to work on it. So please ask for updates if this post has not been updated for a long time. <\/p>\n\n\n\n

In the current version, you can display the temperature measured at the radiator and the setpoint or target temperature. Of course, you can also set the desired temperature. <\/p>\n\n\n\n

Last but not least, the charge status of the batteries is also displayed in the radiator thermostat. I assume that this is displayed as a percentage. However, as the charge level is currently at 100 and is falling very slowly, I still need to observe how this value develops as it falls.<\/p>\n\n\n\n

What I have already installed but have not yet been able to trigger is the boost function. This function can be triggered on the thermostat itself by pressing the menu button for two seconds. This heats up the radiator fully for a short period of time. Of course, it would be practical if this could also be triggered from NodeRed to heat up a room quickly and automatically. <\/p>\n\n\n\n

Below are a few views of the configuration and the actual NodeCode.<\/p>\n\n\n\n

\"\"<\/a>
View of the flow in the NodeRed configuration view.<\/figcaption><\/figure>\n\n\n\n

<\/p>\n\n\n\n

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View of the controls in the dashboard view.<\/figcaption><\/figure><\/div>\n\n\n\n

How you can import the NodeCode below is described in the article NodeRed - import and export node code<\/a><\/strong><\/em> described.<\/p>\n\n\n\n

As always, you can find the NodeCode in the Nerdiy Git repository under the following link: <\/p>\n\n\n\n