So we now have 5 people interested with additional two who want to build one by themselves (myself and Don).
What I'm courious about is what price range (for a 64 button, pressure sensitive instrument) is acceptable for you? What features should such instrument have? It might be tricky to convince anyone to start production if everyone has different expectations...
I'd imagine inventor would have the most detailed notes on experimenting with instrument size, but I'd think something in the 64-67b range would make sense. Large but not so big that it becoomes bandoneon-like and requires sliding the hand a lot more through the strap. I looked at my 7" Beaumont, and I could see fitting the additional buttons onto those size of ends, 7" seems a workable size.
So far as price, the S-Wave goes for £1600. For me that's about at the upper limit of what I'd want to pay for a MIDI Hayden this year; if Dean had a Hayden variant out now I could see buying one this summer, but as noted he's sticking with English. For me to pay more than the low-mid US$2000s, I'd have to be gigging more seriously to justify it, and I'd have to be pretty convinced it was a really professional product.
So far as features, I'm okay with it not having bellows (like S-Wave) if a piston arrangement would work equally well. But if it turns out that a simple air pressure sensors is easier and cheaper (even factoring the cost of stitching bellows), I'm okay with that too. I just like the piston's "skeletalized" look, plus at least Dean's can be disassembled and laid flat into a case.
If it doesn't add too much additional cost, some adjustability of handrest slant would be helpful, since our small community has two different preferred angles on the Hayden. I don't know enough about knobs and switches to have any opinion as to what doohickies (if any) should be integrated into the body to change settings or whatnot, rather than by adjusting on the synth device (laptop, ipad, etc).
I have no particular demand for onboard processor or speaker. As long as I can plug a chord into one end of it, I'm fine having an amp and an iPad (to serve as synth) to do all the processing. I'm not opposed to having something more self-contained, but I'd rather have the actual instrument be pretty minimalist; also because that'd make it easy to update the firmware as it improves over the years, rather than having to dig some kind of processor out of the body to upgrade it.
For other design inspirations, worth looking at the Streb eMelodeon:
- Some Playford with pretty convincing melodeon sound: http://www.youtube.c...h?v=y4nnhuo1_hc
- A Streb switching to "church organ" sound: http://www.youtube.c...h?v=TVT3cSg5CkE