Larry, I've got to order those sensor samples.

5VDC, one chip, converts air pressure to exactly what we need here, which is the analog voltage into the 5V A to D.

Looks to me that the range choices are right in the ballpark for the task at hand, give or take a bit of empirical experimentation and perhaps a bit of application mechanically at the bidness end...

Direct connect to keyboards with the Breath Controller input then, next step would be to locate a USB board offshelf that has the A-D already in it and can then cover both worlds. Hopefully this USB board will be a Class Compliant one, eliminating the need to roll a driver.

I'll keep ya posted.


--Mac