A four-video series explores the analog-to-digital and digital-to-analog converters on the Arduino UNO R4, from basic concepts to building a practical electronic voice changer with just a few passive components and a dynamic microphone.
Discover Angelo, an open source portable audio amplifier designed to improve communication with elderly or hearing-impaired people. This project combines simple electronics with a human-centered approach, making it easy to build, customize, and use.
Stereo power amplifier 10+10W into 8 ohms based on the integrated PAM8610, suitable for systems that require high efficiency and little heat to be dissipated. By now, the miniaturization of electronic circuits is advancing unstoppably. It involves even those devices of traditional electronics such as audio amplifiers, which do not have a strict…
To be more motivated during exercise, Nikolas has decided to make a Smart pull-up bar using an Arduino Nano which, when you start exercising, will start playing music and will give it a Tic Tac at each set period of time as a prize. A laser diode and photoresistor located at opposite ends of the…
If you are a music composer, or just use your PC to record your musical instrument, you know how useful a MIDI controller can be in order to change certain parameters on the fly. Let’s see how to build one at home with potentiometers, buttons and an Arduino. To use an Arduino as a MIDI…
The author’s goal was to build a huge floor piano using readily available and inexpensive materials. The result is astounding considering it was built entirely at home. The current version cost him $ 300 per octave (mainly due to the wood and translucent acrylic, and about $ 50 for electronics) and $ 50 for the…
The seismometer is a device for detecting earthquakes and measuring their strength. Generally these are very accurate tools and are relatively difficult to build at home. Commercially available sensors are often expensive, and inexpensive shock-sensitive electronic modules are not accurate enough for this purpose. In this project we will see how to create a cheap…
In this project we see how to make a Bluetooth speaker with a clock. It displays date, time, temperature and humidity and it is updated from Internet at 15 minute intervals. It also has a 32-band audio spectrum analyzer that displays different musical patterns. The clock or spectrum analyzer can be displayed while playing music….
In this project we will see how to build a pair of glasses in which the circuits for Bluetooth headsets are inserted in the frame. Therefore you can listen to music wirelessly while wearing. The circuit consists of three main parts: audio amplifier circuit, bluetooth module and charging module. The TP4056 acts as a charging…
Control any MIDI parameter value of your DAW through hand movements. The first controller was made using the knobs of a potentiometer, however the functionality of the knob is only to send values from 0-127 and this can be done by any means, so we thought of using the ultrasonic sensor. This design has been…
The following project consists of a small computer for children which, upon entering the correct name, displays the respective image and sound. The project is based on an Arduino Mega, which receives the signals from a keyboard and displays the writings on a 16×2 character display and the images on a 2.8 “LCD display. The…
Peter Balch, reading an IEEE report on speech recognition from the late 1970s, wondered if, with a normal Arduino Nano, it was possible to obtain the results of a computer of the time. Comparing the two tools a Nano has 2 KB of RAM, 32 KB of program ROM and runs at about 10 MIPS…
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