All items tagged with Elektor.LABS (480)

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Add IoT to your mouse traps

March 19, 2019 by Clemens Valens

Add IoT to your mouse traps

New technologies often find applications in rather unexpected domains. Take for example LoRa, Sigfox and similar IoT technologies. While everybody is working on IoT temperature and humidity sensors for their homes, the real problem is to know if a rodent has been trapped somewhere deep down inside a large building or industrial site. The goal is, of course, to avoid sending out a maintenance engineer to check empty traps.

Build electronics faster with a free InstaPart credit from SnapEDA!

Via: snapeda.com

Build electronics faster with a free InstaPart credit from SnapEDA!

SnapEDA is the biggest electronics parts library for circuit board design: they provide millions of free symbols and footprints to help you design electronics faster. If you need a part that isn't in their library yet, you can get it fast with InstaPart. Simply search for the part you need, request its symbol & footprint, and it'll be live in 24 hours. Redeem your free InstaPart credit now using code "makeitasnap".

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Create a red-light district with darkroom in the backroom of your house

March 5, 2019 by Clemens Valens

Create a red-light district with darkroom in the backroom of your house

At a time of digital photo cameras sporting many millions of pixels and colours and incredibly powerful image processing software, it's hard to imagine that there are people around who spend hours in a darkroom dipping their fingers in poisonous chemicals to develop monochrome negatives and positives? Yet there are, as is proven by this project on Elektor Labs.

Help us fight snoring, join the Elektor Snore Shield contest!

February 28, 2019 by ClemensValens

Help us fight snoring, join the Elektor Snore Shield contest!

A good part of humanity loses precious night rest as a result of snoring or snoring bed partners and/or roommates. The Elektor Snore Shield tries to improve the lives of snoring victims (active and passive). Can you improve the Snore Shield and help people sleep better? The best solutions will be rewarded!

Build an Electronic Die without Dots

February 19, 2019 by Clemens Valens

Build an Electronic Die without Dots

Tired of counting the dots on dice? Then use this circuit instead. Its 7-segment display shows in an unambiguous way the value. Easy-to-build, based on an ATtiny2313 microcontroller and programmed in Bascom. Pressing the push-button will roll the die until the push-button is released. A random number from 1 to 6 will then be shown. A simple way to play quietly during the evenings when the children are in bed.

Build a portable Bluetooth speaker with light effects

February 12, 2019 by Clemens Valens

Build a portable Bluetooth speaker with light effects

Wireless Bluetooth speakers and sound systems have quickly become very popular devices. Although very practical, the sound quality may not always be as good as you would like it to be. So, then, why don’t you build your own? The electronics needed for it are available as cheap modules from China, the acoustics are up to you. And while you’re at it, why not add lighting effects too? Here is a great tutorial.

This GPS-based alarm clock hides a cool graphics touch screen library

February 5, 2019 by Clemens Valens

This GPS-based alarm clock hides a cool graphics touch screen library

Clocks, clocks, everybody seems to be building clocks these days. However, and this is what makes clocks interesting, many of these designs have something special that makes them worth a closer look. In the case of this GPS-based clock built with a Teensy 3.5 board, it is the touch screen and the accompanying graphics library. It may fit your project too, be it a clock or not.

How to visualise the I-V graph of a passive 2-terminal exhibiting negative dynamic resistance

January 29, 2019 by Clemens Valens

How to visualise the I-V graph of a passive 2-terminal exhibiting negative dynamic resistance

Even though I have myself never been in a situation where I needed the solution described in this article, I can imagine that it may be very helpful to those desperate engineers who have been trying for weeks, or maybe months — tearing out their hair — to figure out how in heaven’s name they might use the tools available in their lab to graph the I-V curve of a two-terminal device exhibiting negative dynamic resistance like a tunnel or Gunn diode. And, as so often in such cases, once you know how it can be done, it seems so obvious.

Add VGA & audio interfaces to a Raspberry Pi Zero

January 15, 2019 by Clemens Valens

Add VGA & audio interfaces to a Raspberry Pi Zero

Some people need a thousand words to say something simple and still you have no clue what they’re on about. Others manage to explain a complicated thing in only a few words. This project is probably the project with the shortest description at Elektor Labs, but then again, why use many words when it is all about images? True, there are some illustrations too.

Connect to a WPA/WPA2 enterprise network using an ESP32

January 8, 2019 by Clemens Valens

Connect to a WPA/WPA2 enterprise network using an ESP32

Connecting custom hardware to Wi-Fi networks employing the WPA security protocol — as do most home networks — has become a routine operation for many electronics hobbyists; besides the network’s SSID and the pass phrase, no other knowledge is required to get online. But how do you go about when you want to connect to a WPA2 protected network as used by many companies and universities for instance? Here is how.

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