So we have prototype TeensyVIs up and running! We have dubbed this NuEVI.  Currently testing software/hardware for basic playability, but this project is moving fast. Amazing possibilities and it looks like existing EVI players with aging EVIs - and those that have wanted an EVI but could not get one -  will have a very viable option in the near future.

The above is my prototype built quickly solely for the purpose of testing. But I could probably play a gig on this thing is necessary.  Touch sensitivity is handled by the Teensy and add-on touch sensor board.  It works very well, and we are now in the tuning and refinement stage of testing.  

For this prototype, I used simple materials. Off-the-shelf nuts and bolts, simple metal for the benders (which work amazing btw!) and other readily available parts.  Plexiglass for the sandwich body. And other parts that weren't too hard to source.  I will add special keys and vibrato sensor in my next iteration, but first wanted to test the basics - breath, fingering, bending.

In short, we are making great progress! Stay tuned.