In this project we are going to build an audio bug using Arduino and NRF24L01. This audio spy bug is highly customizable and can be easily integrated with other devices and systems. The NFR24L01 ...

Whether you’re working with an Arduino, Raspberry Pi, or standalone audio source, this amplifier provides an efficient way to enhance sound quality. Fig. 1: ... LM386 Based Audio Amplifier: Circuit ...

Play music with the Arduino received in real time on its serial port. This project (which is entirely useless and just for fun) consists in sending a 8-bit WAV file by the emulated serial port from ...

Let’s revisit the creative Arduino Uno-based design. The Arduino-powered AM transmitter was fairly straightforward. As Kainka explained, a transmitting tube was driven hard by the carrier signal ...

List of Components - Arduino Based Spy Bug. The circuit for the spy recorder consists of very basic components that you will be able to find in your local hobby store, when you have accrued all the ...

Circuit: Ultrasonic Directive Speaker Back in 2011, Elektor presented a DIY 50-m range directive sound beam using an array of piezo ultrasonic transducers (up to 200) driven with a PWM signal. While ...

This proof-of-concept is just waiting for you to put it to good use. [Mike Tsao] wrote an Arduino sketch that lets him decode incoming audio data which could be used to program the device. He&#8217… ...

An Arduino is a much better choice than a Raspberry Pi for tasks that require real-time input and responses. While a Pi can ...

The Casio SK-1 keyboard is fairly well-known in the “circuit bending” scene, where its simple internals lend themselves to modifications and tweaks to adjust the device’s output i… ...