The MIDI format has long been used to create some banging electronic music, so it’s refreshing to see how [John P. Miller] applied the standard in his decidedly analog self-playing robotic xylophone.

Framed inside a fetching Red Oak enclosure, the 25-key instrument uses individual solenoids for each key, meaning that it has no problem striking multiple bars simultaneously. This extra fidelity really helps in reproducing the familiar melodies via the MIDI format. The tracks themselves can be loaded onto the device via SD card, and selected for playback with character LCD and rotary knob.

The software transposes the full MIDI music spectrum of a particular track into a 25-note version compatible with the xylophone. Considering that a piano typically has 88 keys, some musical concessions are needed to produce a recognizable playback, but overall it’s an enjoyable musical experience.

Perhaps most remarkable about this project is the documentation. If you want to build your own, everything you need to know is available online, and the no-solder approach makes this project very accessible. Most of the write-up happened some years ago, and we’re really interested to see what improvements have been made since.

The robotic xylophone is reminiscent of these automatic tubular bells from some time ago. These musical hacks can be particularly inspiring, and we can’t wait to see more.

[Thanks Assad Ebrahim for the great tip.]

Musical festivals are fun and exciting. They are an opportunity for people to perform and show-off their art. The Boulevardia event held this June in Kansas City was one such event, where one of the interactive exhibits was a 12-foot guitar that could be played. [Chris Riebschlager] shares his experience making this instrument which was intended to welcome the visitors at the event.

The heart of this beautiful installation is a Bare Conductive board which is used to detect a touch on the strings. This information is sent over serial communication to a Raspberry Pi which then selects corresponding WAV files to be played. Additional arcade buttons enable the selection of playable chords from A through G, both major and minor and also give the option to put the guitar in either clean or dirty mode.

The simplicity of construction is amazing. The capacitive touch board is programmed using the Arduino IDE and the code is available as a Gist. The Raspberry Pi runs a Python script which makes the system behave like an actual guitar i.e. touching and holding the strings silences it while releasing the strings produces the relevant sound. The notes being played were exported guitar notes from Garage Band for better consistency.

The physical construction is composed of MDF and steel with the body and neck of the guitar milled on a CNC machine. Paint, finishing and custom decals give the finished project a rocking appearance. Check out the videos below for the fabrication process along with photos of the finished design.

This project is a great example of art enabled by technology and if you love guitars, then go ahead and check out Brian May’s Handmade Guitar.

Everyone's favorite microcontroller has been a boon among hobbyists and advanced amateurs, but it's also found a home among the brilliant projects at MIT's Media Lab, including a groovy instrument called DrumTop. This modern take on the drum pad delivers Arduino-powered interactivity in its simplest form -- hands-on time with ordinary household objects. Simply place a cup, or a plastic ball, even a business card on the DrumTop to make your own original music.

The prototype on display today includes eight pads, which are effectively repurposed speakers that tap objects placed on top, with an FSR sensor recognizing physical pressure and turning it into a synchronized beat. There's also a dial in the center that allows you to speed up or slow down the taps, presenting an adjustable tempo. DrumTop is more education tool than DJ beat machine, serving to teach youngsters about the physical properties of household objects, be it a coffee mug, a CD jewel case or a camera battery. But frankly, it's a lot of fun for folks of every age. There's no word on when you might be able to take one home, so for now you'll need to join us on our MIT visit for a closer look. We make music with all of these objects and more in the video after the break.

Gallery: MIT Media Lab: DrumTop hands-on

Continue reading MIT gets musical with Arduino-powered DrumTop, uses household objects as a source of sound

MIT gets musical with Arduino-powered DrumTop, uses household objects as a source of sound originally appeared on Engadget on Tue, 24 Apr 2012 12:35:00 EST. Please see our terms for use of feeds.