The Raspberry Pi is famous for many of its features. On the one hand there is the size, performance and (at times when there is no shortage of components) also the price for such a small practical […]
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The Raspberry Pi is famous for many of its features. On the one hand there is the size, performance and (at times when there is no shortage of components) also the price for such a small practical […]
WeiterlesenIn 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. […]
WeiterlesenThanks 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 […]
WeiterlesenFlashing 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 […]
WeiterlesenFor 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. […]
WeiterlesenEspEasy 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 […]
WeiterlesenI 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 […]
WeiterlesenTo 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 […]
WeiterlesenThanks 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, […]
WeiterlesenThe 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 […]
WeiterlesenI think it's time again for a little news article in which I tell you what has happened in the last few weeks and what I'm working on. 🙂 Anemosens […]
WeiterlesenWith 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 […]
WeiterlesenThe 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, on […]
WeiterlesenThe 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-digit-pxldigit-aus-ws2812-leds-bauen/ ). The pxlDigit is built up from individual WS2812 LED segments. To […]
WeiterlesenOne 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 […]
WeiterlesenA 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 […]
WeiterlesenMP3 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 […]
WeiterlesenThe 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 […]
WeiterlesenAt 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 […]
WeiterlesenI'm 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. [...]
WeiterlesenI 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. thesis […]
WeiterlesenThe 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 […]
WeiterlesenThe BME280 is one of the sensors that I use in almost all of my projects. With this sensor one cannot only measure the temperature. The air humidity and […]
WeiterlesenESPEasy 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 [...]
WeiterlesenI 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 […]
WeiterlesenEspecially 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 […]
WeiterlesenThe PCA9685 is quite a practical IC. This is connected to the microcontroller (eg ESP8266) via I2C and can then control up to 16 individual PWM channels. You can control [...]
WeiterlesenThe 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 […]
WeiterlesenFor 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 […]
WeiterlesenThere 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 […]
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