AVR and MIDI go along very well, the TZ81 project is a nice example. In fact, I have hacked mine own gadget in a week, to help me control HAWKed Poly:
http://images57.fotki.com/v283/photos/1/1349988/6744268/176-vi.jpgNot seen on the photo are couple of rotary encoders, and a pot connected to the board. Turning pot controls VCF Resonance, and one of encoders sets VCF Cutoff when dialed. That's pretty much all its functionality to date; need to reinvent some LCD menus now.
PS/2 connector is for the touchpad salvaged from an old notebook; and there's already support for it in the code, allowing to control any two parameters across X and Y axes... some day.
--- In korgpolyex@yahoogroups.com, Gordon JC Pearce <gordon@...> wrote:
>
> On Tue, 2010-12-28 at 21:22 +0000, k9k9dog wrote:
> > i agree..better to devise some software for an arduino MIDI
> > self build thing. the akai arp IS not the ultimate arp, and
>
> That wouldn't be hard to do, really. I've got a couple of other AVR
> projects on the bench at the moment, but maybe by 2011 I'll have time to
> look at an arpeggiator. Or maybe 2012...