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Subject: 
RE: IR Demodulator Range Finder Hack
Newsgroups: 
lugnet.robotics.handyboard
Date: 
Tue, 25 Nov 1997 16:00:17 GMT
Original-From: 
John Hatton <johnha@icsplcIHATESPAM.co.uk>
Viewed: 
719 times
  
Thanks to David Kott for the addresses, the pdf file is a slightly
updated version of the original so it will come in useful. He mentioned
that he was using a circuit to modulate the IR transmission from the
LEDs by using a NE555 to trigger a transistor. Could anybody possibly
mail me the circuit diagram,
I am still a bit rusty on my analogue circuit design.

The reason I am Posting this to the list rather than directly to him is
that the address appears to be un-recognisable to my mail server.

Thanks again.

John Hatton
johnha@icsplc.co.uk



Message has 1 Reply:
  RE: IR Demodulator Range Finder Hack
 
(...) Sure thing. The basic wiring for a 555 in astable mode is pretty straightforward; +5 volts |-----+ +-|-----|-+ +-Res.1-------| 8 4 | | | | |---...---| 7 3 |------> to Base of BJ Transistor Res. 2 | | | +----| 6 "555" | | | | | +--------+----| (...) (27 years ago, 26-Nov-97, to lugnet.robotics.handyboard)

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