View single post by Slider2732
 Posted: Mar 9th, 2008 07:52 PM
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Slider2732

 

Joined: Mar 3rd, 2008
Location: Muskogee, Oklahoma USA
Posts: 349
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 Yeah, no worries Jeff, I just kinda had to understand the operating principle and, thinking of destruction of something helped :biggrin:

I had another thought, before properly looking at strain gauges, that of a Rx/Tx I/R LED arrangement. If the transmitting hole was tiny, the hair would give no reading or silence in this case at rest, blocking the light.  Frequency modulation in the plane would be caught by the movement, as a stream of pulses by the light getting through, that then would be amplified to hearing level.
If the LED's were similarly arranged in both the Y and X planes, as a box shape, then those movements may relate well ?

I prefer the strain gauge idea though as threading through a tiny hole might be difficult and movement room in the I/R LED enclosure might be prohibitive. A read up on principle found this diagram, which relates to an earlier discussion :wink:



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