Subject:
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Re: Power Functions infra-red RC protocol released!
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Newsgroups:
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lugnet.technic
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Date:
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Sat, 26 Jan 2008 21:13:20 GMT
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Viewed:
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12589 times
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In lugnet.general, Philippe Hurbain wrote:
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The LEGO company just released a document detailing the complete protocol
used by Power Functions RC receiver.
I host the document on my Power Functions
presentation page.
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On page 13 it shows the transmit time slots. Giving each channel a unique
stagger for repeats certainly helps avoid collisions, but I’m confused as to why
they have a transmit hold off. If person A is on channel 1, and person B is on
channel 2, they aren’t going to hit the buttons simultaneously anyway, so I
don’t see how having a channel specific hold-off does anything useful at all for
collision avoidance.
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