I would like to know, when I breath in with some air flow sensor. The idea is simple, for now, I put sensor near my lips and breath in, sensor should sense my breathing and send so data to Arduino.
I would like to know, does anybody know anything about using air flow sensors? If so, I would like to know more information (URL, circuits, etc.) about air flow sensors compatible with Arduino controller.
Looong time back I saw a system which had 2 sensors - tiny thermistors - placed in a pipe, few inches from each other. When the medium (gas, liquid) flown through the pipe the temperature fluctuations were measured by both thermistors and a computer calculated a correlation of the both signals. A proper math may give you the speed of the medium as the output. A nice weekend project..