 | | Decoding the LEGO IR remote control
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Hello All - - I'm interested in using a LEGO IR remote control to control other things besides the RCX. Has anyone here done any PIC development along these lines? I would like to use a PIC to decode the output of a Sharp GP1U581Y and convert the 16 (...) (25 years ago, 17-Sep-99, to lugnet.robotics.rcx)
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| | 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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| | Re: Decoding the LEGO IR remote control
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(...) [snip] (...) 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 (...) (25 years ago, 17-Sep-99, to lugnet.robotics.rcx)
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| | 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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| | Re: Decoding the LEGO IR remote control
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(...) 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 (...) (25 years ago, 18-Sep-99, to lugnet.robotics.rcx)
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| | Re: Decoding the LEGO IR remote control
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Dennis, Dave Baum just posted the remote control codes ... they are below: - Nick - Dave Baum wrote: [snip] (...) (25 years ago, 18-Sep-99, to lugnet.robotics.rcx)
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| | Re: Decoding the LEGO IR remote control
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(...) Ah, so the infamous d2 opcode is finally fully explained. What the d2 opcode did was discovered a while back when the firmware was disassembled, but people could only guess as to why Lego put such an opcode into the RCX. It was never connected (...) (25 years ago, 18-Sep-99, to lugnet.robotics.rcx)
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| | Re: Decoding the LEGO IR remote control
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Hi All - - A couple of weeks ago I received my LEGO MindStorms #9738 remote control. It's really cool to be able to select, start, and stop programs ... override the motor controls ... send messages, etc. If fact, it's SO COOL that I want to be able (...) (25 years ago, 18-Sep-99, to lugnet.robotics.rcx)
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| | Re: Decoding the LEGO IR remote control
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(...) The Lego IR protocol is pretty simple. If you have demodulated output, why not dump some samples here so we can see if they make sense? The encoding is straight serial, but inverted - a pulse of light indicates a zero or a low voltage on a (...) (25 years ago, 18-Sep-99, to lugnet.robotics.rcx)
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| | Re: Decoding the LEGO IR remote control
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This LEGO IR remote control (#9738) is making me crazy!!!! Dave and Kekoa have posted in depth explanations of the remote's coding, but I must be awfully dense and am missing something somewhere. I've tried two approaches: First, I used both a (...) (25 years ago, 19-Sep-99, to lugnet.robotics.rcx)
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| | Re: Decoding the LEGO IR remote control
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(...) [snip] Thanks to all you have responded to my plea for help on this list and on others ... especially Dave Baum, Kekoa Proudfoot, Dennis Clark, and several others. But, I'm giving up ... can't seem to find a way to decode the remote's signals. (...) (25 years ago, 25-Sep-99, to lugnet.robotics.rcx)
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