In the article Zigbee – Preparing a Sonoff zigbee 3.0 USB Dongle Plus for zigbee2mqtt, I described how to write the firmware for zigbee2mqtt to a Zigbee stick from Sonoff. […]
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Nerdiy.de – Nerdy DIY HowTo's about electronic, 3D-printing and more.
Nerdiy.de is about electronics, DIY, 3D printing, smart home and a lot of other technical topics.
In the article Zigbee – Preparing a Sonoff zigbee 3.0 USB Dongle Plus for zigbee2mqtt, I described how to write the firmware for zigbee2mqtt to a Zigbee stick from Sonoff. […]
Read moreThanks to the I2C bus, the Raspberry Pi can be equipped with a variety of practical sensors and actuators. The MPR121 offers a (in my opinion) very elegant way for […]
Read moreFlashing the ESP8266 or ESP32 is not that easy if you have not had much contact with microcontrollers before. Now, there is something very cool that makes this process super […]
Read moreFor the past few years, I’ve mostly relied on Synology NAS as my home storage solution. These come with a nice interface and can be configured easily but also extensively. […]
Read moreEspEasy and Node Red each offer a number of options for automation. You get even more options if you combine both systems. In the article ESPEasy – Execute commands and […]
Read moreI got the idea for the pxlDigit_PCB while building the pxlDigit (article here: https://nerdiy.de/howto-elektronik-seven-segment-digit-pxldigit-aus-ws2812-leds-bauen/). There the pxlDigit is made up of individual WS2812 LED segments. To do this, the LEDs […]
Read moreTo be honest, the idea of a 3D printable wind sensor (in technical jargon “anemometer”) has been floating around in my head for a long time. Initially I could have […]
Read moreThanks to the NTP server, ESPEasy is able to call up the time via the WiFi connection. This option is very easy to set up and is described, for example, […]
Read moreThe ButtonBoard PCB is my attempt to kill several birds with one stone. On the one hand, I’ve always been looking for a universal and easy-to-program remote control for the […]
Read moreIch finde es ist mal wieder Zeit für einen kleinen News-Artikel in dem ich Euch erzähle was in den letzten Wochen so passiert ist bzw. woran ich arbeite. 🙂 Anemosens […]
Read moreWith the Aenmosens_MCU board it is possible to use Anemosens as a stand-alone anemometer, which can be used for long-term observations in remote areas (hence the microSD card slot) or […]
Read moreThe Anemosens sensor PCB is the basis for the sensor assembly of Anemosens, a 3D printed anemometer that I developed for the second version of WinDIY. For this purpose, an […]
Read moreThe idea for the pxlDigit_PCB came to me while building the first version of the pxlDigit (article here: https://nerdiy.de/en/howto-elektronik-sieben-segment-ziffer-pxldigit-aus-ws2812-leds-bauen/). The pxlDigit is built up from individual WS2812 LED segments. To […]
Read moreOne of my past PCB projects is the “pxlBlck_multiPCB”. As the name suggests, this board is the heart of several future pxlBlck variants. So far I have used the Wemos […]
Read moreA few days ago the Hackaday Prize 2021 was announced. It became clear to me relatively quickly that I would like to try to submit a few of my projects […]
Read moreMP3 players, smartphones and USB sticks with 128GB and more memory are now part of everyday life. Storing and transporting music has therefore never been easier. About 30 years ago […]
Read moreThe APDS-9960 is a sensor that can be connected to a microcontroller such as the ESP8266 via the I2C bus. With the help of the sensor it is possible to […]
Read moreAt the moment I am working on a few PCB projects in which I would like to give you a little insight here. 🙂 All of the boards presented in […]
Read moreI am not sure whether ESPs can really be abused to set up a botnet. Either way, you shouldn’t neglect the issue of security, even with the small ESPEasy devices. […]
Read moreI also needed a suitable hose system to build my solder fume extraction system. After a little trial and error, I decided to use the standard exhaust air hoses. These […]
Read moreThe VL53L0x or its sister / brother, the VL53L1X is a very precise and relatively inexpensive laser distance sensor. With this, distances can be measured almost at millimeter-accuracy. In one […]
Read moreThe BME280 is one of the sensors that I use in almost all of my projects. With this sensor one can not only measure the temperature. The air humidity and […]
Read moreESPEasy can read out a large number of different sensors and / or control actuators (see also ESPEasy – Sensors & Actuators). With the help of the “Rules” it is […]
Read moreI recently built an extraction system for my soldering station and the chamber of my 3D printer. The built extraction system has two connections. One of them sucks the air […]
Read moreEspecially if your own circuit has a display to show values, the next step is often to connect an interface option. You can connect buttons or switches. A relatively cool […]
Read moreThe PCA9685 is quite a practical IC. This is connected to the microcontroller (e.g. ESP8266) via I2C and can then control up to 16 individual PWM channels. You can control […]
Read moreThe 3D printed housing of the “pxlDigits” was initially not intended to be “just” a 7-segment display with WiFi. Originally I used it to build a kind of timer from […]
Read moreFor another project I urgently needed a relatively large number to indicate a duration. From this this small “sub-project” emerged. Because with the 3D printed frame described here and a […]
Read moreThere are some situations in which connecting an LDR to an ESP makes sense. In this way, the brightness in a room can be measured relatively easily and for little […]
Read moreThe pxlBlck_RingClock is very similar to the pxlBlck_SlotClock. It is also built using a 1 × 60 LED matrix and can display the time according to the same scheme as […]
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