Using Logic's Midi Out to control Arduino

Hey everybody:

I've been perusing everything I can find on midi i/o for Arduino, but so far I haven't found anything that speaks to me on my level. I know how to program Arduino, but I'm not so great with interfacing arduino and my Mac via USB.

This looks promising, but it requires garage band to talk to a separate app that then sends the signal on thru USB. Not the end of the world, but it would be nicer to be able to configure using the Audio/MIDI control panel in Mac OS X:

http://alimomeni.net/node/167

This one is interesting, but I don't think I fully understand it:
http://www.thebox.myzen.co.uk/Hardware/Glockenspiel.html

This guy is doing a lot of amazing work that's like what I want to do, but I don't understand his instructions totally:

Basically I want for Logic to recognize Arduino as a Midi output device, and send Midi signals to it.

My goal is for Arduino to be plugged into some motors that make various noises, and I want to be able to program musical sequences using Logic.

Anybody have any helpful hints for me?

This one is interesting, but I don't think I fully understand it:

Any questions please ask.

I want for Logic to recognize Arduino as a Midi output device,

The simplest way to do this is to have a USB / MIDI interface, then have your arduino input / output actual MIDI signals to this interface. Then all Logic sees is the MIDI interface which talks to the arduino acting like a MIDI device.

In theory it should be possible to write some software to talk down the USB / serial line connecting the arduino to the computer and have that register as a MIDI interface but that involves an intermediate package written in another language. You could do this in Processing or by hacking the serial monome application but it is another level of software complexity.

Thanks a lot Mike, that's really helpful info! I'll go with a USB MIDI interface and see where I end up.

All the best,
Adam