At nerdiy.de, everything revolves around electronics, DIY, 3D printing, smart home and many other technical topics.
I don't know if dashboards are THE (one) means to make a nerd's heart beat faster, but certainly they are a means to make a nerd's heart beat faster [...]
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Voltmeter, ammeter, ohmmeter or as a "compact device" = multimeter are the ultimate life or at least good mood savers when the self-built circuit does not work. Sometimes it just happens that although you [...]
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The great/practical thing about the concept behind the Arduinos is that in many cases you can benefit from the work of others. It almost doesn't matter which sensor you read or [...]
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Especially in the open source world, sooner or later you will stumble across GitHub, GitLab or similar with "Git" in the name - when searching for program code. Behind this are various [...]
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After I had installed FHEM for the first time and the configuration page was really accessible, the euphoria was great. After I had clicked around a bit on it, this euphoria was quickly [...]
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At the latest after you have made the first configurations in your FHEM interface, you should also deal with the topic of security. It is really annoying, if you have to change the painstakingly compiled [...]
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After the soldering of THT components, the soldering of SMD components is, in a sense, the supreme discipline among soldering challenges. The difficulty increases as the size of the components decreases. SMD stands for "Surface [...]
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After the last component of a kit or the first prototype of your own circuit is finished, you are often excited and impatient. Sometimes at this point you have two, three or [...]
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In the article RaspberryPi - Installing MQTT Server on the RaspberryPi I had written a little bit about MQTT and explained how to install an own MQTT server on the RaspberryPi. [...]
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This article actually contains more a colorful collection of creation photos from the time before Nerdiy.de. At that time I built a world map lamp as a decoration for the then still quite bare living room wall. [...]
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The ESP8266 has become in recent years more and more the universal forest-and-meadow microcontroller that you can use in almost any project. A microcontroller for ~2€ including WLAN and with [...]
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Besides the hardware, the right software for your project is of course just as important. A practical and universally applicable firmware for the forest-and-meadow microcontroller ESP8266 is the Tasmota firmware. With it you can [...]
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In addition to caller ID, you can also display the caller log of the Fritzbox in NodeRed. How to do this is explained in the following article. Prerequisites Helpful articles:To apply this configuration [...]
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Automatically dropping relays are known, for example, from the staircase. By pressing a button the light is switched on. Without having to press the button again, the light is automatically switched [...].
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I must admit I've never seen them before, but there are supposed to be so-called dead man's switches on trains. These switches with the somewhat macabre name are a whole sensible invention. [...]
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In the two articles Sonoff 433Mhz RF Bridge with Tasmota Firmware flashing and Tasmota - Sonoff 433Mhz RF Bridge configuring and sockets teaching is explained how to configure the Sonoff RF Bridge to the [...]
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You don't always have the possibility to measure environmental data such as the outside temperature directly. Nevertheless, sometimes it is practical. For example, you can make sure that the radiators inside [...]
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E-mails are (I believe) one of the oldest means of communication on the Internet. In the smart home sector, however, they do not play a major role. Push services - such as [...] - are often preferred for fast and direct data exchange.
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If you have installed an IP camera in your network - or elsewhere - you can also display the camera image in the dashboard of NodeRed. How this works [...]
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Besides SSH, you can also control the RaspberryPi via the VNC protocol. Thereby you access the graphical user interface. And you can use the graphical user interface of the RaspberryPi without a [...]
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The other day, after reinstalling Raspian on the RaspberryPi, I had the problem that access via SSH was agonizingly slow. Most of the time, you could still get the username and password [...]
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As in the retro speaker project, it is a little hobby of mine to give old things a new use. If you can also improve the old technology and for example [...]
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Sometime last year I stumbled across the very inexpensive TDA7492-CSR8635 Bluetooth amplifier boards on Ebay. These include a Bluetooth audio receiver and a stereo amplifier that can drive speaker cabinets up to 50 watts. [...]
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A cool and practical plugin for the MagicMirror is the plugin "MMM-GoogleMapsTraffic". This shows you the status of the current traffic in your area. How to install this is described in the [...]
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Especially non-tech-savvy roommates are mostly skeptical about this whole SmartHome thing. Questions are constantly asked such as "But why do you need that?" or "And that's so important now that [...]
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A MagicMirror consists of an important part of software besides the obvious mirror&screen. There are now some good software packages for this. The best one in my opinion is the one from Michael Teeuw. He has developed the for [...]
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You can swear about Apple devices or idolize them, but what Apple has done very well is to integrate SmartHome components into their operating systems. Thus, iOs inherently brings a [...]
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In the article about the 433Mhz mini-button I had already reported on my forays through the wonders of the electronic product world. In the process, I also noticed a 433Mhz SOS button, which probably [...]
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If you are one of the many owners of a FritzBox, you can set up another telephone extension on your computer with a few tricks. That means you will be informed about calls [...].
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Another practical find during my forays through the electronic product world is the 433Mhz wireless wall switch. It can be easily integrated into NodeRed or any other SmartHome system using the RF Bridge. How [...]
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