At nerdiy.de, everything revolves around electronics, DIY, 3D printing, smart home and many other technical topics.
A few days ago the Hackaday Prize 2021 was announced. Relatively quickly it was clear to me that I would like to try to submit a few of my projects again this year. Thereby [...]
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At the moment it has become a bit quieter here on Nerdiy.de. This was due to the fact that I have been working more on the development of a few new projects. Unfortunately the [...]
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I am currently working on a project that unfortunately exceeds the capabilities of my 3D printer. So far, I have been able to print all the required components on the actually quite lush print bed dimensions of 235x235mm on [...]
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Meanwhile, MP3 players, smartphones and USB sticks with 128GB and more memory are part of everyday life. Storing and transporting music has therefore become easier than ever. About 30 years ago [...]
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The APDS-9960 is a sensor that can be connected to a microcontroller like the ESP8266 via the I2C bus. With the help of the sensor it is possible to recognize simple gestures, which [...]
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While setting up the exhaust system for my soldering station and the chamber of my 3D printer, I was faced with the problem of somehow splitting the intake of the exhaust system into two ways [...]
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Currently I am working on a few PCB projects in which I would like to give you a little insight here 🙂 All in the following presented boards have manufactured at PCBWay.com. These [...]
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I am not sure if ESPs can really be misused to build a botnet. Either way, security should not be neglected even with the small ESPEasy devices. [...]
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To make sure that my MagicMirror is only on when I really use it, I configured a small automation using NodeRed. So the screen is only turned on when [...]
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For the construction of my solder fume extraction system I also needed a suitable hose system. After some trial and error I decided to use the standard exhaust hoses. These are actually used to connect the [...]
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So that I can switch off my 3D printer automatically after the printing process, I have installed a Sonoff relay so that it can interrupt the power supply to the complete 3D printer. The relay [...]
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The VL53L0x or its sister/brother, the VL53L1X is a very accurate and relatively inexpensive laser distance sensor. With this, distances can be measured almost to the millimeter. In one of my [...]
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The BME280 is one of the sensors I use in almost all my projects. With this not only the temperature can be measured. Also the humidity and the air pressure [...]
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ESPEasy can now read out very many different sensors and / or control actuators (see also ESPEasy - Sensors & Actuators). With the help of the "Rules" can then locally on the ESP [...]
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I recently built an exhaust system for my soldering station and the chamber of my 3D printer. The built exhaust system has two connections. One uses a connected hose to suck up the [...]
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Especially if your own circuit has a display to show values, the next step is to also connect a control option. You can connect pushbuttons or switches. A [...]
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The PCA9685 is a quite practical IC. It is connected to the microcontroller (for example ESP8266) via I2C and can then control up to 16 individual PWM channels. So you can [...]
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What I really like about Spotify is that it's very networkable. You can play or control music or podcast on another device with just a few clicks. Thanks to the free possibility [...]
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With NodeRed or the appropriate nodes, you can very easily retrieve data from the Internet and display it in a processed form. A practical use case for this is, for example, the retrieval of gas station prices [...]
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The 3D printed case of the "pxlDigits" was not intended to be "only" a 7-segment display with WLAN. Originally I made a kind of timer out of a two-digit 7-segment display for [...].
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For another project I urgently needed a relatively large digit to display a time duration. This small "sub-project" ultimately arose from this. Because with the 3D printed frame described here [...]
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There are some situations in which the connection of an LDR to an ESP makes sense. This is because it is relatively easy and for little money to adjust the brightness in a room [...].
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I started with the documentation of the pxlBlcks in November 2020 after Hackaday.com announced the "GoodBye 2020"-Challenge. (More info here: https://hackaday.io/contest/175608-goodbye-2020/details) I had used [...]
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Actually not one of the typical posts for Nerdiy.de, but recently I was looking for a tambourine that I can operate myself while playing guitar. Long speech, [...]
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Looking for a foot rattle to accompany the guitar playing I had the similar problem as with the foot tambourine. Therefore again: Do it yourself. 🙂 A tutorial to make your own foot rattle [...]
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The pxlBlck_RingClock is very similar to the pxlBlck_SlotClock. It is also built with the help of a 1×60 LED matrix and can display the time according to the same scheme as the pxlBlck_SlotClock. However, the [...]
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The pxlBlck_8x8 was one of the first members of the pxlBlck family. Thanks to the few parts and the prefabricated WS2812 8×8 LED matrix it is quite fast to build and thanks to the adapter board it offers [...]
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The idea for the pxlBlck_Pot is strongly inspired by a design that Lukas (@i_am_lukas) had created. He agreed to let me take over his design. Thanks again for that 🙂 At the [...]
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The pxlBlck_SlotClock consists of a 1×60 LED matrix. So it can display the time according to the same scheme as an analog clock. The colors of the individual hands can be adjusted. [...]
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I started developing the pxlBlcks because I was looking for a way to stay informed about events in the SmartHome. In the meantime there are two in [...]
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