An electronic dice, a simple fun project for playing games or to improve your soldering skills.

Zur Überwachung des Füllstandes in einem Brunnen ( ca 6 m tief ) habe ich eine Messung mit Drucklufteinperlung über einen Schlauch in den Brunnen mit einer Aquarienluftpumpe installiert. Der Druck in dieser Leitung wird mit einem Drucksensor MPX 10 DP gemessen und das Ausgangssignal mit 2 OP (LM1458N) für den Eingang eines ATTiny 13 (A) verstärkt.

Features: - capacitive power supply to reduce electric smog - big and efficient 1.2" 4-digit 7-segment display (I2C) - Teensy 3.1 board with 12 Bit DAC (SD-card wav player) and internal RTC - efficient I2C class D amplifier (89% efficient with 8Ω speaker at 1.5 Watt) - DCF77 receiver - two rotary Encoder with switch for easy and intuitive control - state machine programmed with arduino (teens

Students are killers! After the painful death op three raspis I decided to design a short circuit resistant buffer board. A little googling pointed to this page from brian dorey. The mentioned TXS0108E sounded interesting and the design was straightforward.

A much simpler way than the the Raspi's Pin Header for connection is USB. Connect an Atmel AVR-USB Controller with your Raspi. This is simplified by the small USB library in bascom, c and assembler for AVR-USB-controller!You had 4 excuses for not using USB in your project!1. Too complicated!Not true if you use this small library.

A Platino-based Transistor Tester to test transistors in a simple and portable way. Since it is tedious to read the markings on the transistor devices and to look up to its characteristics in datasheets, a handy transistor tester makes its way in such scenarioes.

My Digital Oscilloscope has a timebase of maximum 50 seconds per DIV and a 12 DIV screen, which gives a mere 10 minutes for following a voltage. Much too fast to track charging or discharging batteries or other slow changing events. An Arduino Mega 2560 with the here introduced shield expands the oscilloscopes tracking time up to 12 hours, or more.

The Oberon high-level, modular programming language with its origins in Pascal and Modula-2 can be used to program the Sceptre.

Add a graphic display to the Elektor Sceptre and a little trackball and the Sceptre smartphone comes within reach…

When the Sceptre was being designed, the idea of using it with a resistive touch screen had already been considered. Here is the implementation.

Grasping the Sceptre. Here now are the explanations and details of the Sceptre software. Let your reign begin!

The InterSceptre MCU extension board opens doors (and ports!) for you. Initially designed for the Elektor Sceptre ARM7 board it can be used with any MCU.

Debugging the Sceptre using JTAG, with the help of OpenOCD, GDB, Insight and Eclipse for Windows.

In 2014 Elektor presented three AVR T-Boads designed by Andrew Retallack, tiny processor boards designed to be fitted on bread board for building and testing new prototypes. These were followed by the T-board Wireless and Audio T-board and now we proudly present this ARM T-Board!

This project is the result of the LPRS contest run last year. The winner's project is to be finalized by and published in Elektor. So here we go.

The Elektor Magic Eye EM84 (Jan 2010) 'AVR309' driver doesn't install under Windows 10, so I searched for another driver...

 THIS EVENT HAS ENDED!We would like to thank you all for attending, and we hope you enjoyed the session as much as we do :)For those who couldn't be there, don't panic! We will be announcing a second round very soon... stay tuned!

High performance microphone preamplifier with phantom power for use with line-level audio inputs as found on todays computers. Gain can be set in six steps from 20 to 70 dB, 20 dB by 1: 10 input transformer.

In 2010 we published a power supply called UniLab (project 090786). It was able to deliver 30 V and 3 A. This design can be considered its successor.  Maximum voltage is also 30V and the maximum output current is limited to a little over 3 A (5 A is possible, but with reservations). We used a different step down voltage regulator, the LM2677-ADJ.

The idea of using Ultraviolet LEDs to expose photo-sensitive circuit board is not a new one but with this design I hope to provide a solution with consistent timed exposure using very simple circuit construction, downward exposure and using off-the-peg boxes to house the unit. In fact, everything has been designed with the home constructor in mind.

As Murphy's Law says, there are two type of users: those who have lost data and those who are about to lose data.