Subject:
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Re: IR Collision avoidance
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Fri, 28 Feb 1997 22:54:30 GMT
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Original-From:
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MAR ERICSON <mar@cooperSPAMCAKE.edu>
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Viewed:
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2340 times
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>
> 220 Ohm
> o--------/\/\/\--------------+-------------+---------------+
> J7 o (LED) (LED) (LED)
> o----------------------------+-------------+---------------+
What are the three LED's for?
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Message has 1 Reply:
 | | Re: IR Collision avoidance
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| (...) Those are the IR LED's - the one's that transmit the IR light that the receiver sees. Also, while I'm at it, I found out that the diagram above isn't completely accurate (I drew it from memory). The circuit I really use is like this: (...) (28 years ago, 28-Feb-97, to lugnet.robotics.handyboard)
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Message is in Reply To:
| | Re: IR Collision avoidance
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| The Handyboard has a circuit (U7a, R4, C6) that generates a 38KHz signal. That drives an amplifier that then goes to J7, the IR LED output. If you hookup an IR LED to this jack (with a series resistor) then when you turn on TOC2 using ir_xmit_on() (...) (28 years ago, 24-Feb-97, to lugnet.robotics.handyboard)
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