Marcus Olsson built a sound reactive LED jar for a music hack weekend.
He named it “Don’t Look At Me LED” because when turned up to full brightness it’s really hard to look straight at it. That’s what 576 LEDs glued around a 16cm jar will do for you. I love the sound reactive nature of this project as well as the scrolling text feature.
Forum user wolke recently posted about his monophonic guitar synthesizer. This DIY project has an impressive list of features. This is a German language video that demos the cool effects. The unique sounds remind me of spaceage music.
The code for the project is posted on Github https://github.com/wolkstein/GitSynth127
The modified audio library is on Github as well https://github.com/wolkstein/Audio
J Beale took a low cost dopler radar and used a Teensy 3.2 and the audio library’s Fast Fourier Transform (FFT) function to improve the sensor range. This is a really cool project. He used the audio library for a non-audio project to make an inexpensive radar module work much better.
More information about the project can be found on this forum thread.
The University of Applied Sciences in Vienna developed the FlipMouse, a replacement for a normal PC mouse to be used by people with motor disabilities. This project really improves PC accessibility to those who need an input device other than a standard keyboard or mouse.
Dave Harper used a trio of Teensy boards to develop a ZigBee based whole-house audio controller. It’s pretty awesome that he was able to emulate an expensive commercial amplifier with this DIY project.
The Teensys emulate one of three MDS-6 audio amplifiers, each of which has 6 source inputs and six stereo zone outputs. The amplifier requires one serial input line and three LED output lines per zone, making the 24 I/O line Teensy a perfect fit.