Subject:
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Re: Use PC's IR port instead of IR tower?
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Newsgroups:
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lugnet.robotics.rcx
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Date:
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Fri, 12 Nov 1999 18:28:33 GMT
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Viewed:
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1580 times
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The basic difference between PCs/PalmPilots/WinCE IR ports and the RCX is a
different physical transmission/modulation protocol. In the PC etc case the
commonly used format is described by the IrDa standard (www.irda.org) where
seperate IR pulses are used to transmit Bits. The RCX uses a format
'loaned' from Remote controls where a IR carrier frequency is used to
transmit bits in a similar fashion to radio transmission (i.e. a missing
period in the carrier denotes a Bit).
However, I have seen applications where a PC was turned into a remote
control for TVs etc by programming the IR hardware directly. Obviously thats
HW dependant. Check the following links for more information:
http://www.ee.washington.edu/eeca/circuits/PCIR/Welcome.html
http://www.chambord-tech.com/
http://www.dodgies.demon.co.uk/FAQ/IrDa.html
Cheers
Reimer
Brad Aisa <baisa@NOSPAMbrad-aisa.com> wrote in message
news:38277AEC.2FA599A0@NOSPAMbrad-aisa.com...
> Hello,
>
> Is it possible to use a PC's IR port, instead of the IR tower, to
> communicate with an RCX?
>
> (I have a Dell Inspiron 3500).
>
> --
> Brad Aisa
> baisa@NOSPAMbrad-aisa.com -- PGP public keys available at:
> http://keys.pgp.com:11371/pks/lookup2?op=index&search=Brad+Aisa
>
> "Laissez faire."
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Message has 1 Reply:
 | | Re: Use PC's IR port instead of IR tower?
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| In theory it's possible, provided that: [1] The optical frequency matches adequately (anyone know?) [2] 38400 Hz is close enough to the RCX/Scout modulation frequency to get past any bandpass filtering.. [3] The PC software can accurately turn IR (...) (24 years ago, 10-Oct-00, to lugnet.robotics.rcx)
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Message is in Reply To:
| | Use PC's IR port instead of IR tower?
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| Hello, Is it possible to use a PC's IR port, instead of the IR tower, to communicate with an RCX? (I have a Dell Inspiron 3500). -- Brad Aisa baisa@NOSPAMbrad-aisa.com -- PGP public keys available at: (URL) faire." (25 years ago, 9-Nov-99, to lugnet.robotics.rcx)
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