In my spare-time I like to bike. Since I live in a region with lots of hills, I built this little device to see how steep the road really is.

To measure cable integrity without interfering with main purpose of an installed cable.

Rotating a solar panel towards a light source (eg the sun) with return to 'morning' position after sundown.

RF log detector/controller AD8317 and an Arduino Nano make a compact RF Power Meter possible. The RF front-end is a 4-layer break-out-board with SMA.

Short high current pulses can prevent or even solve sulphating of the lead accumulators and can be used to measure its state of charge

12V battery solar charger controlled by an ATtiny13.

The laser plot clock writes the time on a piece of glow in the dark sticker material using a violet laser module.

Having a microcontroller’s firmware emulate a microcontroller opens the opportunity to set up a very reduced emulated microcontroller instruction set.

Using CAN Bus on Arduino you can monitor the health of your solar PV cells very easily & efficiently yet at a very low price.

A system to remotely measure and report the residual activation level of dried mushroooms after the Tjernobyl accident.

Diode Bandgap 1.12V (fait maison) : Le montage exploite l’effet bandgap avec des composants discret (CA3086) + 1 transistor BC327.

Graphic LCD shows weather forecast

Every day we throw away usable power alkaline cells. Since the device in which we use them can not work with partially discharged cells, the circuit that I present can raise the voltage of one exhausted cell to 5V to use it in any other application, for example to turn on a led, feed a microcontr...

Modern electronics have evolved to a very great extent today such that it over spreads on the territory of computer science on one hand while under spreads on the zone of Information technology as well. Today there is hardly any electronic project which does not use micro controller unit and or computer programming languages.

Although this SO8-to-DIP8 adapter is specifically designed for a single or dual opamp, it can also be used for any other IC in a standard SO8 package.

This board is designed to control the FPGA DSP Radio (150177) and other applications. It has a LCD, push buttons, rotary encoders, audio power amp...

Easy-to-build project to assist you when parking your car into a small space.

Record a short video about something Elektor and maybe win a 3D printer, digital oscilloscope or one of the other prizes! Now voting!

Design an all-analog fading LED circuit, post it on Elektor Labs, and make a chance to win a €100 gift certificate. Here are the results!

Efficiency booster for candles. The peltier lamp converts heat energy released by a tea light into electric energy in order to drive a USB LED light.

This will be a Persistance Of Vision fidget spinner.