Looking for a cheap little piezoelectric fan

[Don Taylor]

I'm searching for a source of a handful of cheap little piezoelectric
fans for a hobby project that might later sell a few finished items.

I'm not trying to move air. Instead I'm trying to wiggle a tiny
reflecting surface back and forth a little bit to roughly sweep the
light from a led across the face of a bundle of fiber optics.

Precision isn't an issue, low power consumption, cheap price and
getting most of the led light coupled into the fibers with some
visible "jiggling back and forth among the fibers appearance" is all
I'm trying to get.

Other suggestions that might accomplish the same thing would be
considered.

thanks

 

[Captain Rick]

On Mon, 03 Jan 2005 15:02:50 -0600, dont@agora.rdrop.com (Don Taylor)
wrote:

I'm searching for a source of a handful of cheap little piezoelectric
fans for a hobby project that might later sell a few finished items.

I'm not trying to move air. Instead I'm trying to wiggle a tiny
reflecting surface back and forth a little bit to roughly sweep the
light from a led across the face of a bundle of fiber optics.

Precision isn't an issue, low power consumption, cheap price and
getting most of the led light coupled into the fibers with some
visible "jiggling back and forth among the fibers appearance" is all
I'm trying to get.

Other suggestions that might accomplish the same thing would be
considered.

thanks

Don't know about the piezo fans, but how about putting the led on a
spring with a bit of steel, and pulse an electromagnet nearby? Or put
the reflecting surface on a spring, with a bit of steel.......

Rick.

 

[Michael Black]

Captain Rick (ME@127.0.0.1) writes:

On Mon, 03 Jan 2005 15:02:50 -0600, dont@agora.rdrop.com (Don Taylor)
wrote:

I'm searching for a source of a handful of cheap little piezoelectric
fans for a hobby project that might later sell a few finished items.

I'm not trying to move air. Instead I'm trying to wiggle a tiny
reflecting surface back and forth a little bit to roughly sweep the
light from a led across the face of a bundle of fiber optics.

Precision isn't an issue, low power consumption, cheap price and
getting most of the led light coupled into the fibers with some
visible "jiggling back and forth among the fibers appearance" is all
I'm trying to get.

Other suggestions that might accomplish the same thing would be
considered.

thanks


Don't know about the piezo fans, but how about putting the led on a
spring with a bit of steel, and pulse an electromagnet nearby? Or put
the reflecting surface on a spring, with a bit of steel.......

Rick.

Of course, the traditional trick was to mount a mirror on a speaker,
and use that to manipulate the light source. Maybe even mount the
LED on the speaker cone.

I don't know if the original poster needs fine control, but I think you'd
get more of that with a speaker than a solenoid/electromagnet.

Michael