The Infinity Wall, a 30 by 7 Meter Full-Colour 3D LED Display

You can spend many days on YouTube watching videos about anything from tutorials to blogs to art to TV shows and what not, from silly to impressive. Out of this huge audio-visual ocean we dragged up a jewel that we would like to present here.

Disassembling electronic devices, broken or not, can be very instructive. After recovering a dead 30 W LED floodlight in the dumpster and taking it apart a so-called (sequential) linear LED driver was discovered.

If you use microcontrollers, play with Arduino or do other things that involve open-source software, you will most certainly have come across GitHub. After Sourceforge and Google Code, GitHub is currently the place where people share their work. All sorts of open-source projects can be found here, ranging from simple single-file Arduino sketches to huge cloud applications consisting of hundreds of repositories containing thousands of files. Things like CAD files and plain text articles are posted as well. Elektor Labs also publishes on GitHub. In this video we explain how to get our (and others') stuff from GitHub, a question we have to answer way too often.

People often ask us how to download something from GitHub. Here is how.

Software Defined Radio or SDR is a radio technique that relies on software to do most of the hard radio work. The Elektor SDR Hands-on Kit helps you to get started in this fascinating and often mysterious world.

A tutorial about using ESPHome to configure and connect an ESP-8266-based device to Home Assistant running on a Raspberry Pi.

When using one or two LEDs as indicators in a circuit, their respective brightness is not the most important thing in the world. If, on the other hand, the goal is to build a LED-based lighting system for homogeneously illuminating for instance a painting or another surface, then the individual brightness of each LED is important. After building this tool, handpicking LEDs for brightness becomes much easier.

The GreatFET One board created by Great Scott Gadgets is designed around an LPC4330 dual-core microcontroller from NXP. The board comes preloaded with a special firmware that allows it to be controlled easily from a host computer thanks to an extensive Python library.

The Six Digit Nixie Clock we published in Mai 2016 was greeted with a lot of enthusiasm. One of its users, F1Andy, posted a design for an upgrade to add WS2812-based multi-colour backlighting to the clock. He reworked the software too. Now it has alarm functions and it can display the date. To extend the life of the Nixie tubes dimming and anti-cathode poisoning was added as well. Note that some of these new functions require minor hardware modifications of the clock. An official Elektor PCB for the multi-colour backlight will be available soon.

Volta, Ampère, Ohm — we use their names all the time, but what do we really know about the people who laid the foundations of modern electronics? In this article we will (briefly) explore the life of Georg Simon Ohm.