i am planning to create an accordion like controller with a (or two) trill craft (s). the final design sensing area will be 314x70mm.
i am considering two options:
1) each "pad" goes to a separate input on the craft, essentially creating a 1 to 1 touch solution. since the layout has quite some note overlap (inherent to accordion style layout) i can attach two pads to most of the inputs, so should get away with two craft boards. i have done this on a smaller scale with copper wire and it is very responsive and works great.
2) create a 314x70mm sensing area from a craft (or two) and read out the positions in software, much like on a trill square or trill bar.
in the first case the tactile response will be more precise i guess, since i can use a physical pad or nails head, but i won't have any other gestures i can use (like sliding from one pad to another for example) since the pads are not overlapping at all.
in the second case i can get slides and stuff working but i will loose some of the tactile immediacy, unless i put some fake buttons on top of the sensor area (a silicon matt with bumps for example)
my goals are to have a very precise controller, additional axis of sound manipulation would be nice but are not mandatory.
what would you suggest?
or might there even be a third option, something like a capacitive key-matrix for example?
attached is a render of an openscad project that visualises the first concept, the pads would be upholstery nails, since they look nice and are quite cheap and provide good tactile feedback