Subject:
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Re: IR wall detection
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Thu, 16 Jan 1997 04:27:11 GMT
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Original-From:
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Matt Harlan <MJH10@CORNELLstopspammers.EDU>
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Viewed:
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2389 times
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Keith,
Try an LM567. It's a tone decoder with PLL and VCO. Basically set
the internal freq. of the 567 any where between .01 Hz up to I think 500
kHz. Feed a signal into the 567 and if the freq's match up, the 567's
output goes low. I've been messing around with using the 567's internal
occilator to modulate the 40 khz carrier from a 555. tring to make a
single unit with simply two power connections and an output.
hope it helps
matt
_______________________
Matthew J. Harlan
Cornell University
Electrical Engineering
mjh10@cornell.edu
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Message is in Reply To:
 | | IR wall detection
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| I have recenty perfected a simple sensor using the Sharp IR detector but I need some help in interfacing it. I plan on having about 16 sensors all around the perimiter of the robot but I don't want to have them running all at the same time because (...) (28 years ago, 14-Jan-97, to lugnet.robotics.handyboard)
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