We've gotten a new user contribution today from Alfonso Alba. This sketchs (which you can see in action at this link) uses drum samples from a Yamaha RY20 as a playable sound source. The samples can be selected with either a knob selection or voltage input, and you can also control tuning as well. The result is an amazing addition to the ArdCore sketch pile, and is available in our User Contributed Sketches section. A great module on its own, the source code is also very revealing for programmings that want to use sample playback.
(edit) Alfonso has tossed another hat into the ring - an LFO with a quadrature output. Very cool stuff!