{"id":3036,"date":"2022-07-22T17:07:44","date_gmt":"2022-07-22T15:07:44","guid":{"rendered":"https:\/\/www.nerdiy.de\/?p=3036"},"modified":"2022-07-22T17:07:46","modified_gmt":"2022-07-22T15:07:46","slug":"howto-nodered-presence-detection-via-ping-request","status":"publish","type":"post","link":"https:\/\/nerdiy.de\/en\/howto-nodered-presence-detection-via-ping-request\/","title":{"rendered":"HowTo: NodeRed - Presence detection via ping requests"},"content":{"rendered":"

In order to be able to automate your own smart home properly, one function is quite important: Are residents present or not? This is the only way the system can, for example, automatically deactivate the heaters, switch certain lights off or on or even activate the alarm functions. <\/p>\n\n\n\n

In the article Node Red \/ FritzBox \u2013 presence detection with the FritzBox<\/a><\/em><\/strong> I have already described how this can be achieved using the function integrated into a FritzBox. But what if you don't use a FritzBox as a router? <\/p>\n\n\n\n

In that case, there are a few other options, one of which I would like to describe to you in this article. The presence of various devices (e.g. residents' smartphones) can also be realized via regular ping requests. <\/p>\n\n\n\n

These regular ping queries can be automated and evaluated with NodeRed. An initial basis for this automation is described in the following article.<\/p>\n\n\n\n

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

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.<\/span>
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Requirements<\/h2>\n\n\n\n

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