A smartwatch, but without the complications of a smartwatch.

This user-programmable doorbell plays any melody you want when someone comes to your house and rings it.

This project suggested lighting a lamp or electrical products via Android phone (iPhone need to make the simple program) by simple commands. You notice: it not may be ordered the Bluetooth range is very small.

Build an experimental microwave Doppler radar by using a low-cost radar transceiver module.

Distance measurement until Christmas Eve with 24 LEDs using Elektor Raspberry Pi ruler gadget

3 displays alarm-clock with TFT screen, developped with Arduino

Upgrade your old DCF77 clock to be synchronised via NTP

        FORMANT is an analog monophonic synthesizer published in the 70’s from Elektor magazine. It has a modular structure that allows it to be constructed step-by-step and expanded at will. It can be built at home and it is an excellent model to fully understand the operation of subtractive-type synthesizers.

Using just any PN532 RFID reader/writer board and a USB to TTL cable you can build your own smart card reader and learn about NFC Tags.

A logical sequel to RNG-5 hardware random number generator- one-time pad crypto system, very secure, virtually unbreakable peer-to-peer communication!

Project with 2x (3x4 Switch) and 16x 7-Segment LED. I use Atmega 1284P with 12MHz / 3.3V on Arduino.Diskussion in German here: https://www.mikrocontroller.net/topic/371684

Personal Speedometer - It's a personal SPeedometer cum jogging tracker. It does not require any Internet connection - better than a smart phone.

If you ever need a large display for events or games, this is the thing to build with its four 10 cm-high 7-segment digits.

Did you ever wonder how fast your hamster can run? With this project, you may find out!

It will send you a text message when mains power fails and when it switches on again.

LEDs and closed loop brightness control ? Or using 'ancient' techniques such as current squaring current mirrors ? Let's go analogue for a change ....

Although designed as a give-away gadget for trade shows etc. this ruler loaded with RPi information can electronically measure distances of up to two meters.

Reload "CAR-HiFi-Booster" Elektor 10/1994 for use at home as a high quality audio amplifier.

This is an Audio DAC designed for the Raspberry Pi. Using app Volumio it can be used as a stand alone networked Audio Player or operated thru a WebUI.

Remote display of domestic water meter with consumption analysis for quick leak diagnosis. ESP32-OLED, WiFi, Web server, IFTTT.

Meeting of 2 hobbies : electronics and aviation. To improve pilot situational awareness with basic sensors (GPS, IMU, ADS-B receiver).