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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: Tasks vs. program slots
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Hello Dave, First, let me thank you for NQC ... you've made my RCX playing tremendously more rewarding. I've been wanting to use a Sharp IR receiver to demodulate the signal from a LEGO remote control, and then a PIC to decode the rx output for use (...) (25 years ago, 18-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: Tasks vs. program slots
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(...) Too bad! So, the next thing I wonder is if there's any way to get an RCX to _send_ these packets to another RCX... (25 years ago, 18-Sep-99, to lugnet.robotics.rcx.nqc)
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| | NQC API
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I've been using NQC a bit ... and when the NQC 2 Request was posted, I got to thinking ... What about making a standard API that is not changed (except for officially) and a 'macro library' that can be added to and downloaded off of a website or (...) (25 years ago, 18-Sep-99, to lugnet.robotics.rcx.nqc)
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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: Tasks vs. program slots
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(...) The remote control always sends the same sort of packet: d2 xx yy where xxyy is a sixteen bit bit-field indicating what features should be activated: xxyy 0001 Message 1 0002 Message 2 0004 Message 3 0008 Motor A Forward 0010 Motor B Forward (...) (25 years ago, 18-Sep-99, to lugnet.robotics.rcx.nqc)
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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: Tasks vs. program slots
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(...) This is why it might be nice to get the remote control reverse engineered -- we may discover a way. (25 years ago, 17-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: Tasks vs. program slots
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(...) RCX contains 5 programs. Each program can have up to 10 tasks and 8 subroutines. Only one program may run at any given time, multitasking is between tasks in the same program. There is no known programmatic way of transferring control from one (...) (25 years ago, 17-Sep-99, to lugnet.robotics.rcx.nqc)
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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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| | I'll host the Code Repository!
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I wouldn't mind hosting a NQC lego code repository on Maktos.com. I have plenty of space, so you could send me pictures, code, articles, news, whatever you want. I'll put it all up in its own area. I have a really nice server with plenty of space (...) (25 years ago, 17-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: Tasks vs. program slots
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(...) Not each using the _total_ max of course. But yeah. (...) Yep. I do this all the time. I often make a with-sound and a silent version, for example. It's also nice if you have a version of your program which works well but you want to make some (...) (25 years ago, 17-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: Tasks vs. program slots
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(...) Now you have ME wondering. Can we build 5 programs each with 10 tasks, each of these programs using all of the RAM, max program space, etc.? I have yet to do anything that ambitious, but it would be cool to switch behaviours by just changing (...) (25 years ago, 17-Sep-99, to lugnet.robotics.rcx.nqc)
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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: Tasks vs. program slots
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(...) I believe that there's a maximum of ten tasks. So it would be a coincidence, but it isn't. :) (25 years ago, 17-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Tasks vs. program slots
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I am curious to clarify something. The NQC documentation states that an NQC program can have up to 5 tasks (I think that's the right number). In addition, the brick itself has the 5 program slots. Are they related or is it a coincidence of (...) (25 years ago, 17-Sep-99, to lugnet.robotics.rcx.nqc)
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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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| | 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: Code Repository
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(...) anyone, allowing great amount of flexibility. I have created an area here: (URL) site is designed to be very flexible, including good viewability under all browsers, simplified layouts (for lynx, too, see [appearances]), editability, etc. I'd (...) (25 years ago, 16-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: Code Repository
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Joel, (...) in (...) The easiest way of implementing this would be to use the Lego-Robotics Wiki. Because it doesn't require an administrator it's easy for anyone to add the code/samples that they want. For NQC you can choose to add your links off: (...) (25 years ago, 16-Sep-99, to lugnet.robotics.rcx.nqc)
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