To round out this edition of DIY Day, we close with the final proof that MIDI has been used to control absolutely every technology in the known universe:

RoombaMIDI: Roomba as MIDI Instrument

Scoff, you might. Sure, the Roomba lacks a certain . . . well . . . expressiveness. But that probably means you haven’t gotten to the words “Roomba orchestra.” I’m holding out to see that. Plus, you can see the source if you’re curious how to build your own Mac MIDI-to-whatever applications. Via MAKE:blog. Darned guys there beat me to something again.