Subject:
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how to use IR recievers?
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Sat, 7 Mar 1998 07:12:10 GMT
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Original-From:
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Patrick Cutts <PATRICK@SURFARI.NETantispam>
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Reply-To:
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<PATRICK@SURFARI.spamcakeNET>
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Viewed:
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1628 times
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I remember some lively discussions concerning the use of an ir sensor (like
from an ex-vcr) to locate objects, walls, etc. I didn't have a handy board
at the time, but saved the messages for the time that I got one. Well that
time is now, but I have paged down through all my saved email messages and
can't seem to find the ones I need.
So I dismembered a dead vcr and got the ir receiver module out, it consists
of a pcb with a surface mounted 8-pin IC & a few resistors, a capacitor,
and the ir sensitive device. It has three pins on it, obviously for
signal, ground and supply voltage, I got the ground pegged, it's pretty
obvious, but the other two just go to a couple of the pins of the IC.
Anyone out there know how I can identify the other two? The board has
'CMK-29EHB silkscreened on it, if that's any help. Once I do figure this
out, I assume I can connect the out to one of the HB's digital inputs and
power it up (5 volts?) and it will go high (low?) when it gets a modulated
signal (at what frequency I have no idea).
This is about as far as I can get. Anyone know where I can get more info
on using one of these to detect ...stuff... ? including how to get an
ir led to put out a modulated signal that will be received by the receiver?
( I have the remote from the vcr, I expect to tear that apart to use its
ir led.)
any input from anyone will be much appreciated.
Thanks,
-patrick
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