DC and Alx,
Thanks again for the reply.
- a sensitive strain gauge
Did not think about it, it does sound like a good option.
Something like this?: http://www.digikey.com/product-detail/en/CEA-13-125UN-350/1033-1016-ND/2503707
measuring the change in resistance of a fine heated wire
This is the principle in an hot wire anemometer, right? I was looking at this option:
Wind Sensor Rev. C – Modern Device
having the breath deflect a conductive vane, and measuring the capacitance between that vane and a nearby conductive plate
I am not sure I understand this....
What about one of those small & cheap barometric pressure sensors?
I thought about that, my impression was that a barometric sensor was not fast enough to get the pressure changes you have if you blow in a tube, but I may be wrong
Something like this?:
http://www.karlssonrobotics.com/shop/barometric-pressure-sensor-bmp085-breakout-retired/?gclid=CLrhvrigq7MCFQqe4AodzScAqA
I was also looking, following suggestions given in similar topics, at microphones, to detect the noise you make when blowing, though in an electronic wind instrument you are not suppose to produce sound directly, but to use your breath as a controller for the software to actually play sounds:
Either this: SparkFun Electret Microphone Breakout - BOB-12758 - SparkFun Electronics
or this: http://robosavvy.com/store/product_info.php/products_id/626/currency/USD
The latter seems to respond better to noise volume than the former, according to posted comments
Your thoughts are greatly appreciated, thanks.
Luca