Teaser: Netduino with MIDI shield and touch screen
This video shows a Netduino connected to a Arduino MIDI shield and a Nintendo DS touch screen. X controls filter cutoff and Y controls filter resonance, that in combination create some quite dramatic effects. Of course and MIDI control can be assigned to X or Y. Just add some software.
The prototype uses an off-the-shelf MIDI shield and a Nintendo DS touch screen connected piggy back on the shield.
The Netduino runs a simple “convert X/Y touch values to MIDI control changes” application. Right now it sends volume as X and modulation (in practice vibrato) as Y, but that’s easy to change in the code. If no finger is touching the screen the last setting will stay. I also filter so that MIDI data is only sent when there’s an actual change in any direction.
The touch screen is not very sensitive, but works as a demo of what can be achieved with no additional electronics beyond what’s mentioned and very little software too.