Ultrastable UHF transmitter – A super Tiny Radio Transmitter
RF

Ultrastable UHF transmitter – A super Tiny Radio Transmitter

Dire situations require unpleasant solutions, an excellent example of this statement is spying and we have seen what the NSA has done in this regard. It goes against proper ethical character, however, it might be needed in certain circumstances. Usually, the first thing a person who wants...

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ESP32-LyraT – An Open Source Development Board For Smart Audio Applications
SBC-SiP-SoC-CoM

ESP32-LyraT – An Open Source Development Board For Smart Audio Applications

Espressif systems has been working on different audio applications including smart speakers. Despite the fact that they have been developing their audio applications, as of February 2018, none of ESP32 software development kits was easily accessible and the hardware kits were not able to...

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Open Source Ethernet Audio Broadcaster
IoT

Open Source Ethernet Audio Broadcaster

Luca Pascarella @ open-electronics.org presents how to setup their open source ethernet broadcaster. He writes: Recently, we have presented an Ethernet audio streaming unit. In particular, we have shown how to configure the boards to work with other similar devices or with VLC Media...

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Digital UV-meter with OLED Display
LCD/OLED

Digital UV-meter with OLED Display

techn0man1ac @ instructables.com build a nice VU meter using Arduino and an OLED display. Hello, instructable. Today I will tell you how to make a simple digital VU meter (sound level meter) using Arduino and OLED displays and 2 resistors by yourself (DIY). The device is quite simple,...

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PiSound – Audio Card For Raspberry Pi
Raspberry Pi

PiSound – Audio Card For Raspberry Pi

by blokas.io: pisound is an ultra-low latency high-quality soundcard and MIDI interface specially designed for Raspberry Pi pocket computers. Equipped with 192kHz 24-bit Stereo Input and Output driven by the legendary Burr-Brown chips, DIN-5 MIDI Input and Output ports,...

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SoundDuino 3, The Latest Sound Shield for Arduino
Arduino

SoundDuino 3, The Latest Sound Shield for Arduino

The electronics engineer and microcontroller programmer expert, Masih Vahida has launched his latest SoundDuino Arduino shield product: SoundDuino 3! SoundDuino is a WAV Sound Player & Recorder Shield for Arduino. This sound shield let you record and play sound files to or from a...

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The SilentSwitcher, A Quiet Mains-free Power Supply
AudioPower supply

The SilentSwitcher, A Quiet Mains-free Power Supply

Audio projects become smaller over time with the rapid advancement of technology. A traditional power supply is still considered large compared to audio projects size constraints and it may not fit such delicate applications that need to deliver a good sound with zero noise. Jan...

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How to Build a Class-D Power Amp
Audio

How to Build a Class-D Power Amp

Cezar Chirila @ allaboutcircuits.com shows how to build a Class-D amplifier which has amazing efficiency. What is a Class-D audio power amplifier? The answer could be just a sentence long: It is a switching amplifier. But in order to fully understand how one works, I need to teach...

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