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Re: Mobile Sensorium [was Re: Time for Serious GPS Application]

From: Marcus Wolschon <>
Date: Sun, 07 Jan 2001 11:23:15 +0100

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Matt Carlson wrote:

> I did a similar test just to see how the thing worked.  I don't have a
> microcontroler, so I just hooked it up to 4.9 volts (3 AA batteries) and my
> mulitmeter.  Didn't really know what I was looking for, but what I found
> kind of supprised me.  When I pointed my VCR remote at it and hit a button
> it went from a steady 4.7v to 0.3v then back again.. if I held down a button
> on the remote it sat on about 3.?v (can't remember off the top of my head).
> I expected it to work the other way around (to send out the High voltage on
> receiving a signal and low other wise.  I'm still not sure why it sat at
> 3.?v when it got a fast repeating signal.

Maybe it's just that it gets back to 4.7v between the fast signals and
your
multimeter is too slow and gives you the integral.

BTW if you have an IR-port on the 5822 you can do full
IrDA-communication
and do remote-control-receiving with LIRC (it works with SIR-ports or
FIR in
SIR-mode). One more free port that way.

Marcus
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