Concept: Digital Hurdy Gurdy

I've been thinking for a while about the possibility of a digital hurdy gurdy, an instrument that generates sound from a spinning wheel (hand cranked) that excites three types of strings: melodic, drone, and percussive.

Here's my initial sketch



I decided to do some research on the hurdy gurdy and found that Derek Holzer has made an electronic one (though there's no computer or microcontroller inside). His electric hurdy gurdy is an offshoot from his Tonewheels project, and though it looks great I think there is plenty of room to expand on the concept. Details here: http://macumbista.net/?p=3020

His electric hurdy gurdy looks like this...



The design looks really solid and I love how it still looks (and essentially works like) a hurdy gurdy. If I decide to go through with this idea I would certainly reference Holzer's work.