On my breadboard, I have 11 of these
I may add some to complete the flute layout if needed.
I am waiting for some gear, protoboard,a mic, and the components to drive it ^^
tho i am still figuring out the code.
The buttns i'l add will probably be two trills and maybe 2 or 3 buttons more, depending on how the final design will be ^^
And, @ReverseEMF, I want to recreate a flute layout as close to the original as possible (that's why it will have a mic, for the mouthpiece), so, the notes will be created by the combinations of some keys, like a real flute( imma experienced flute player btw )