The AirHarp USB is a handheld ultrasonic digital autoharp built around the Arduino Uno R2 microcontroller. Specialized firmware code written by Dr. Yoshitaka Kuwata of Morecat Lab allows the AirHarp USB to be instantly recognized as a USB MIDI controller instrument when plugged into virtually any modern computer (and even some mobile devices, such as the Apple iPad). The AirHarp USB comes fully assembled, programmed and tested by the instrument's inventor, Peter DeSimone.

This package includes:

• (1) AirHarp USB ultrasonic digital autoharp.
• (1) USB-A/B connection cable.

All you need is:

• A modern computer running Mac OS X, Ubuntu Linux or Windows. The computer must feature a USB port and have a CPU clock speed sufficient for software synthesis (most machines manufactured within the last five years are more than adequate). An Apple iPad will also work!
• A software synthesis package of some kind. Macs come with GarageBand pre-installed, and there's a free program called Cantabile Lite for Windows. A host of options are available for iPad, including GarageBand, Animoog & NanoStudio, to name a few.

The AirHarp USB is "class compliant", so no driver installation is necessary.

For demo songs, videos, schematics, source code and everything else to do with the AirHarp, check out:

http://www.airharp.com

The AirHarp Shield is a press-on attachment for the Arduino microcontroller that provides five ergonomic pushbutton inputs, a high-intensity light emitting diode (LED) and an ultrasonic rangefinder. Using our open source firmware in conjunction with a published hack, you can turn your Arduino Uno R2 into a class compliant USB MIDI controller instrument! If you choose this option, your AirHarp Shield will arrive fully assembled and tested. All you need to do is flash the appropriate firmware to your Arduino, and you'll be the proud owner of a brand new AirHarp!

All you need is:

• An Arduino Uno R2 microcontroller and USB programming cable.
• A modern computer with a software synthesis package installed (e.g. Apple Garageband, Apple Logic, Cantabile, FL Studio, etc.) ~ OR ~ a Modern Device Fluxamasynth Shield.
• Intermediate computer skills.

You will need to download the Arduino IDE, the AirHarp firmware and MocoLUFA. Detailed programming instructions are included here:

http://www.instructables.com/id/How-to-build-an-AirHarp/

The AirHarp Shield Kit includes all the parts you need to build your own AirHarp Shield! Add an Arduino Uno R2 and a bit of wizardry, and you'll be the proud owner of a brand new AirHarp! The kit includes:

• (1) AirHarp Shield 1.2 printed circuit board (PCB)
• (1) Maxbotix LV-EZ1 ultrasonic rangefinder
• (5) 12mm momentary pushbuttons
• (1) Stick of at least 34 break away header pins
• (1) Super-bright LED (5mm, blue or green)
• (1) Resistor (220 ohm)

You will also need:

• An Arduino Uno R2 microcontroller and USB programming cable.
• A soldering iron and basic soldering skills.
• A pair of diagonal cutters (a.k.a. "dikes" - wire cutters).
• A modern computer with a software synthesis package installed (e.g. Apple Garageband, Apple Logic, Cantabile, FL Studio, etc.) ~ OR ~ a Modern Device Fluxamasynth Shield.
• Intermediate computer skills.

You will need to download the Arduino IDE, the AirHarp firmware and MocoLUFA. Detailed assembly & programming instructions are included here:

http://www.instructables.com/id/How-to-build-an-AirHarp/

With an AirHarp Shield PCB (printed circuit board) and a handful of parts, you can build your very own AirHarp! Note that this item does not include any components. To finish your AirHarp, you will need:

• 1 Arduino Uno R2 microcontroller
• 1 Maxbotix LV-EZ1 ultrasonic rangefinder
• 5 pushbuttons (12mm footprint)
• 1 resistor (220 ohm, 1/4 watt)
• 1 ultra-bright LED (10mm or 5mm round)
• 1 row of break away header pins (34 pins req.)
• (Optional): A case or enclosure of some kind.

http://www.instructables.com/id/How-to-build-an-AirHarp/