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 ...

Building on that concept, the next objective was to create an even smaller FM radio compact enough to fit inside an earbud.

This project (which is entirely useless and just for fun) consists in sending a 8-bit WAV file by the emulated serial port from the computer to the Arduino, while the Arduino translates in real time ...

Circuit: Arduino-Powered AM Transmitter Circuit: Arduino-Powered AM Transmitter Interested in audio-related projects? One of the most popular Elektor projects in 2015 was Burkhard Kainka's medium-wave ...

Sound Sensor with Arduino UNO – Connection Diagram Now that we have a complete understanding of how a Sound sensor works, we can connect all the required wires to Arduino as shown below. Connecting ...

Arduino Based Spy Bug – Schematic Diagram The complete Schematic diagram for the Arduino Based Spy Bug is shown below. The brain of the project is the Arduino Nano that you can see in the schematic.

Inverting pin 2 of IC1 is connected to ground and non-inverting pin 3 is connected to the input terminal through VR1. Audio input is fed to CON1. VR1 is used to control volume. Construction and ...

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… ...

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 ...

Posted in classic hacks, hardware, Musical Hacks Tagged arduino, Casio SK-1, circuit bending, NEC 23C256, rom ← Repairs You Can Print: A Little Love For The Glove Box ...