🚀 go-pugleaf

wayne@r-node.gts.org (Wayne) writes:
: In article <1992Oct30.161218.28681@unislc.uucp> mgc@unislc.uucp (Marc Christensen) writes:
: >Matt White (whitem@jester.usask.ca) wrote:
: >: 
: >I tried to use a I/R transistor, amplifier, and I/R LED for to do this but
: >I never could get enough sensitivity to get it to work more than 3 feet oops
: >I mean 1 meter or is that metre? oh well.
: >sharp makes an I/R demodulator. It is a little metal box about 3/4" square
: >it seems to have very good sensitivity.
: 
: The Sharp module distorts the timing of received signal enought that you don't
: get accurate enough timing if you just use it to remodulate with a 555.

I built an IR repeater with the Sharp module and a 555.  It works with most
of the remotes that I have that send data continuously when you hold down a
key on the remote, AND that operate around 40 kHz.  I could never get the
repeater to work reliably with my AudioSource SS4 Surround Sound decoder,
due in part to the fact that the SS4's remote operates around 30 kHz, and
when you press a button on the remote to change the mode and turn power
on/off, the remote only sends out a short burst of data, rather than a
continuous burst.  I solved my problem by using a Radio Shack Rabbit for the
SS4's remote, and my IR repeater for all the other remotes.

A side question - I substituted the white two-conductor stranded thin wire
that came with the Rabbit with some two-conductor solid 24 ga. wire, and the
Rabbit didn't work anymore, even after I used the original thin wire again.
They say in the Rabbit docs not to alter the length of the thin wire, but I
thought that was just so that you wouldn't have to splice more wire in later,
but now I think that the Rabbit somehow depends on the length and gauge of
the supplied thin wire - anyone know?

mike

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 mike bender  DOD# 007  for sale: NX-650 & VT110 Shadow	415-863-8913 (home)
 bender@oobleck.eng.sun.com    nothin' witty here	415-336-6353 (work)
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