Subject:
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Re: Decoding the LEGO IR remote control
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Newsgroups:
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lugnet.robotics.rcx
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Date:
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Fri, 17 Sep 1999 18:16:35 GMT
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Viewed:
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1500 times
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In lugnet.robotics.rcx, Nick Taylor writes:
> In light of the underwhelming lack of response to my LEGO IR post,
> maybe I need to clarify a little: • [snip]
> What I would like is help in using a PIC (or a Stamp) to decode the
> output of an IR receiver that is receiving opcodes from the LEGO
> controller. Lacking that, pointers to using a PIC for decoding TV
> IR remotes would help.
What makes this especially intrigueing is that the remote control box does
not send messages with the same preamble as the RCX does. The RCX with take an
RCX message and treat it as a message. The stuff from the remote is treated as
an overide. I'm looking forward to finding out how it does that - Its prolly
just another slightly different preamble.
Nick, I never thought of the Stamp II, but it might work to do some bit
testing. This is a quick way to find out! Lessee, I'll need a 416us bit time
window, start bit will be the first 'low',...
DLC
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Message has 1 Reply:
Message is in Reply To:
 | | Re: Decoding the LEGO IR remote control
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| In light of the underwhelming lack of response to my LEGO IR post, maybe I need to clarify a little: The RCX tower and the LEGO remote control (#9738) both transmit a 38kHz carrier which is modulated at a 2400bps rate. The encoding is 8 data bits, (...) (25 years ago, 17-Sep-99, to lugnet.robotics.rcx)
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