At nerdiy.de, everything revolves around electronics, DIY, 3D printing, smart home and many other technical topics.
The great thing about NodeRed, apart from the simple programming, is that there are all kinds of plugins (called "nodes" in NodeRed) with which the range of functions of NodeRed can be extended. A list of the [...]
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Depending on how you configure your Node-Red installation, it can be handy that it tells you when Node-Red is restarted. For example, you will be notified about crashes and [...]
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In the article about the 433Mhz mini pushbutton, I had already reported on my forays through the wonders of the electronic product world. In the process, not only the 433Mhz wireless wall switch, 433Mhz mini push button [...]
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Thanks to the very universal Tasmota firmware (Sonoff 433Mhz Rf Bridge with Tasmota firmware flashing) you can send and receive pretty much any 433Mhz signal using the Sonoff RF Bridge. However, this works [...]
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Thanks to a technical trick and a suitable script, you can use the RaspberryPi - without additional hardware (apart from a piece of wire) - to send audio files and even whole texts via FM signal [...]
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In the articles RaspberryPi - Installing Speech Output with eSpeak and RaspberryPi - Sending FM Signals via GPIO Pin it is described how to use the RaspberryPi to read out texts and send FM signals [...].
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One of the weak points of a SmartHome system that you only really realize when something goes wrong is "energy". All the sensors, actuators and the controlling intelligence behind them run [...]
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Especially if your RaspberryPi is running in standby most of the day it makes sense to give it other tasks than the one it was originally designed for. So is [...]
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On my (almost daily) forays through the wonders of the electronic product world, I recently came across this little guy: A roughly two-euro piece of 433Mhz wireless pushbutton, which is powered by a [...]
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There are a few cases in the life of a RaspberryPi owner where it can be useful to display the last bootlog of the RaspberryPi. The bootlog is basically the - much more detailed - [...]
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Another great feature of NodeRed is that the complete - or individual parts of the configuration - can be exported formatted as a JSON string. JSON strings are strings in which configurations [...].
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To give your RaspberryPi a personal touch, there are now all sorts of possibilities. From self-designed and then 3D-printed cases to self-soldered expansion boards, there is actually almost nothing [...]
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Especially in rooms where you "work" a lot with water or water vapor, you should always ventilate sufficiently to avoid damage and health hazards caused by mold. If you are one of the [...]
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Pushbullet is a free and easy way to receive push messages on your smartphone or computer. So you can use this free service (up to 500 messages/month) to send text information or even pictures [...]
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Pushbullet is a free and easy way to receive push messages from on your smartphone or computer. So that you can access the features of Pushbullet from other devices such as [...]
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Especially if you are a bit more involved with the Internet, network or your own SmartHome, you will sooner or later be faced with the problem of how to manage the IP addresses of individual devices in the [...]
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Via the service of OpenWeatherMap.org you can get free weather data. To be able to access this service automatically - for example from NodeRed or from an Arduino [...]
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Normally every Arduino board is programmed via the serial interface. However, not only the program code can be transferred to the Arduino. It can also be used to send control commands to the Arduino [...].
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To make the series of Löffel articles a bit more complete I would like to explain in this article how to install programs and what to consider [...]
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The ArdunioIDE is - compared to other development environments - very simple. There are not many things that can be set or adjusted. This has the advantage that beginners or [...]
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The soldering of THT components (THT=Through Hole Technology="through-hole assembly") is one of the basics you need to build kits, prototypes and the like. This is because many electronic components, especially ICs, are still [...]
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When a Windows user comes into contact with the Linux world for the first time, frustration is usually not long in coming. Especially the work with the console [...]
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In the articles Fibonacci Clock - An Unusual Timepiece, Fibonacci Clock - Assembly and Fibonacci Clock - Programming I described how you can build your own Fibonacci Clock. Just in case, [...]
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In the post FibonacciWatch - An Unusual Timepiece I introduced the cool idea of Philippe Chrétien. As mentioned in the post, I think the idea is cool and have started [...]
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In the two articles Fibonacci Clock - An Unusual Timepiece and Fibonacci Clock - Assembly the Fibonacci Clock was introduced and described how you can assemble your own Fibonacci Clock. After you have completed the assembly [...]
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The Fibonacci Clock A few months ago I came across a project by Philippe Chrétien (geekoclock.com) from 2015 on Kickstarter. There (www.kickstarter.com/projects/basbrun/fibonacci-clock-an-open-source-clock-for-nerds-wit) a clock was offered for sale [...]
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A smart home system is only really fun when it can communicate with other components. Since many systems use wireless connections for communication, it is only logical to start using FHEM as soon as possible.
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If you work with the RaspberryPi you will sooner or later encounter the problem of how to transfer files to the RasPi or copy them from the RasPi. For this purpose there are [...]
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MQTT (Message Queue Telemetry Transport) is the protocol that is becoming more and more important in the world of Internet of Things. With this protocol it is very easy to transfer different data between different [...]...
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The great advantage of the RaspberryPi is not only that it is small, compact and relatively inexpensive, but also that it is child's play to operate remotely from another computer [...]
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