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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Sat, 18 Sep 1999 01:30:40 GMT
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Viewed:
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1371 times
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Kekoa Proudfoot wrote:
>
> Nick Taylor <ntaylor@iname.com> wrote:
> > 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, odd parity, 1 stop bit, noninverted. I've also
> > found Kekoa's RCX opcodes page.
> >
> > 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.
>
> Do you want to connect the PIC to the IR tower to receive signals from the
> Lego remote control, or do you want to build your own IR receiver, and
> attach the PIC to that?
>
> The encoding of the IR is pretty simple. The IR tower contains a circuit
> that receives modulated IR on one side and dumps a standard serial signal
> out the other. The PIC presumably can process standard serial signals?
> There might be voltage issues depending on how you do things, but mostly
> this seems like a circuit design problem, and depending on what you plan to
> have involved besides the PIC, you may have more or less work to do. But
> what you want to do is still unclear, sadly :(
>
> -Kekoa
Hello Kekoa - -
I apologize for not being able to make myself clear. I want to use
the LEGO #9738 to control robots that use something other that the
RCX for a controller. I envision a Sharp GP1U581Y IR receiver driving
a PIC. The PIC will decode the output of the GP1U581Y and output one
hex character to the main processor on the robot.
- Nick -
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Message is in Reply To:
 | | Re: Decoding the LEGO IR remote control
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| (...) Do you want to connect the PIC to the IR tower to receive signals from the Lego remote control, or do you want to build your own IR receiver, and attach the PIC to that? The encoding of the IR is pretty simple. The IR tower contains a circuit (...) (25 years ago, 17-Sep-99, to lugnet.robotics.rcx)
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