I2S USB Microphone using STM32 and MEMS Microphone
https://www.electronics-lab.com/i2s-usb-microphone-using-stm32-and-mems-microphone/
Virtual desktops are used extensively in the IT sector currently due to the COVID-19 pandemic. This set-up allows the employees to work remotely and is convenient. Virtual desktops are preconfigured images of operating systems and applications in which the desktop environment is separated from the physical device used to access it. Users can access their […]
Audio-Balanced Line Driver – Unbalanced Audio to Balanced Audio Converter
https://www.electronics-lab.com/audio-balanced-line-driver-unbalanced-audio-to-balanced-audio-converter/
This audio-balanced line driver project enables to drive hundreds of feet in length of cables without becoming unstable The project is based on the THAT1646 chip, which is a new generation monolithic differential line driver that offers improved performance over conventional cross-coupled designs. Based on high performance, fully differential op-amp exhibits low noise and distortion, […]
Raspberry Pi Foundation Re-introduces Four IQAudio HATs at Lower Prices
https://www.electronics-lab.com/raspberry-pi-foundation-re-introduces-four-iqaudio-hats-at-lower-prices/
Sometime in December last year, Raspberry Pi Foundation, after acquiring IQAudio Brand, mentioned that it had plans to relaunch IQAudio’s four most popular HATs as their official Pi accessories. The foundation has now reintroduced the popular audio add-ons with improved features and lower prices ranging from $20 to $30. “This is the first time we’ve […]
Headphone Amplifier For DAC Converter
https://www.electronics-lab.com/headphone-amplifier-for-dac-converter/
This is a headphone amplifier project for audio digital-to-analog converters (DACs) with differential voltage outputs. This circuit converts the differential voltage output of the DAC to a single-ended, ground-referenced signal and provides the additional current necessary for low-impedance headphones. Project is built using OPA1688 low distortion, high-drive Sound Plus audio amplifier. The circuit tested with […]
Four IQaudio add-ons to join the Raspberry Pi product line
https://www.electronics-lab.com/four-iqaudio-add-ons-to-join-the-raspberry-pi-product-line/
A couple of days back, Raspberry Pi announced the four most popular IQAudio products to join the Raspberry Pi product line which, as the name suggests, are Audio add-ons. IQAudio previously sold expansion boards knowing the capabilities of Raspberry Pi for hi-fi audio. This is the relaunching of the DAC+, DAC Pro, DigiAMP+, and Codec Zero that will […]
Audio VU/Sound Level Meter with LM339
https://www.electronics-lab.com/audio-vu-sound-level-meter-with-lm339/
This is an “Audio VU Meter” or “Sound Level Meter”, it is a general-purpose bar-graph Audio VU meter designed for fun projects. All you need is to hook up one wire to the output of the audio amplifier’s speaker pin along with GND and see the magic. The response of the circuit is very fast […]
DIY: Build a controller with a knob that can easily change the volume of any app on your PC
https://www.electronics-lab.com/diy-build-controller-knob-can-easily-change-volume-app-pc/
Ruben Henares has designed a Maxmix controller with a stylist knob that could save us the stress of having to always go through the menus and on-screen sliders to change the volume of individual apps on our PCs. The knob on the controller takes an input from the encoder/button to display the desired app where […]
Free Elektor Project: Q-Watt Audio Power Amplifier
https://www.electronics-lab.com/free-elektor-project-q-watt-audio-power-amplifier/
Good news for all audio enthusiasts: we are proud to present yet another all-analog circuit developed entirely in house. Despite the simple design of this audio power amp with just one pair of transistors in the output stage, Q-Watt can deliver over 200 quality watts into 4 ohms with exceptionally low distortion thanks to the […]
ATtiny85 Audio Sample Player
https://www.electronics-lab.com/attiny85-audio-sample-player/
While the ATtiny series of microcontrollers have been around for a long time, their popularity until recently was low. DIY enthusiasts and Professional designers now use them in diverse projects, most of which, in the past, would have featured an Arduino or a bigger MCU like the Atmega328p. One of such amazing project is this […]
World’s first fully self-contained Raspberry Pi audio HAT board with MERUS™ class D multilevel amplifier
https://www.electronics-lab.com/worlds-first-fully-self-contained-raspberry-pi-audio-hat-board-merus-class-d-multilevel-amplifier/
Infineon Technologies AG developed the world’s first fully self-contained Raspberry Pi audio amplifier HAT (Hardware attached on Top) board. It offers high definition audio at boom box power levels in a small form factor. The Infineon proprietary multilevel technology ensures minimum size and consumption, state of the art power efficiency, and HD audio quality for […]