A smartwatch, but without the complications of a smartwatch.

I am working on a complete high performance transceiver for narrow band SSB/CW (and possibly also AM and FM) on shortwave and/or VHF (amateur radio bands) based on signal processing in an FPGA together with 24 bit ADC and a very fast DAC.It is stand-alone and not like most other SDR projects that are relying on a PC.

Reads two PS2-keyboard and transmits MIDI commands. Includes arpeggiator and learn/replay mode.

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.

This project describes the generation of sine waves by a simple recursive digital filter in a way that only 8 bit shift/add/subtraction operations, two permanently occupied 8 bit registers and no data tables are required, therefore permitting the usage of low-cost micro-controllers without multiplication units and little storage capacity.

ESP32 - Digital Voltmeter using old style ADC conversion method.

The Elektor Uno R4 is an Arduino Uno R3 equiped with the ATmega328PB-AU featuring 2x USART, 2x I2C and 2x SPI and much more. Now on GroupGets!

The lamp lava requires light and heat, it is condemned by the disgrace of incandescent bulbs. How to save this must-have geekery?

Who realizes this little project gets a device with the following functions:• Displaying the current refrigerator temperature• Monitoring the refrigerator temperature with alarm function• Opening time monitoring with alarm function• Programmable maximum allowed temperature and opening time

This project consists of a mezzanine that permits to use an ATMega DIL28 to replace a 8x51 (8751, 8951, RA2 ...) on a board.

This project includes a softstart circuit for powering up an audio-amplifier and some peripherie.

How to build a real analog Theremin that produces sine waves instead of digital square waves?

HV power supply with tube and semiconductor curve tracer controlled by a Raspberry Pi with touch display.

The goal is to be able to order a cocktail via a phone or PC.

Once you understand VS1053 codec processor , with just 15 lines of code you can build up your Internet radio running on your WIFI internet connection.

The difference between the current temperature and the dew point provides a reliable indication of the risk of mould growth on walls or furnishings

ISDN provides the calling party and is available from many routers. Have a configurable message read aloud by this device when a call arrives.

Buy it here!A propeller clock, also known as a Persistance Of Vision (POV) display is based on a mechanically moving led row. This led row is either oscillating or rotating at a rate superior to human's eye remanence, making a dot matrix which seems to float in the air.

Le présent projet propose un exemple "complet" de conception d'alimentation à découpage de type FORWARD. Ainsi les différentes étapes listées ci-après seront abordées de manière suffisamment détaillée (je l'espère).

FPGAs are unquestionably among the most versatile but complex components in modern-day electronics. An FPGA contains a maze of gates and other circuit elements that can be used to put together your own digital circuit on a chip.

A simple single chip, PIC32-based SPDIF audio output to connect an Android smartphone or tablet to a home entertainment device.