 | | Re: RCX Controlled Air Compressor Tester
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Wow. Did you do that for a paper or thesis? Very worthy research with a surprising outcome. I am sure most of us would surmise that the big sprung cylinder would give more efficacious designs because the displacement would be larger. This site (...) (25 years ago, 28-Sep-99, to lugnet.robotics, lugnet.build, lugnet.robotics.rcx, lugnet.technic)
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| | Re: RCX Controlled Air Compressor Tester
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(...) Thanks, The Advanced Pneumatics Set is Lego DACTA #9633. It's a great set to start pneumatics although its considered a bit expensive. It's pictured at my page on: (URL) S Soh (URL) where air is power (25 years ago, 28-Sep-99, to lugnet.robotics, lugnet.build, lugnet.robotics.rcx)
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| | Re: RCX Controlled Air Compressor Tester
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Thanks for the great comparison between compressors! I have been wondering which one was actually the best. Now to make a better one! One question though, what is the set number for the Advanced Pneumatics Set? Great Work! John Matthews C S Soh (...) (25 years ago, 28-Sep-99, to lugnet.robotics, lugnet.build, lugnet.robotics.rcx)
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| | RCX Controlled Air Compressor Tester
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Hi, all pneumatics fans, For some time I've been trying to figure out how to objectively compare the performance of the various air compressor designs especially the ones using the large pneumatic hand pump which seem to be coming into fashion (...) (25 years ago, 28-Sep-99, to lugnet.robotics, lugnet.build, 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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| | WebSpirit - Javascript RCX Controller
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Some of you may have heard of my WebSpirit, well, I've taken in, improved appearances, cleaned up some code, and moved it to my domain. Cybermaster support is planned. Please note, this does not control anything on my computer! I don't know about (...) (25 years ago, 25-Sep-99, to lugnet.robotics, lugnet.robotics.rcx)
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| | Re: Listening to IR via NQC
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(...) Cool, that'd be great. What I'm looking for is: nqc -listen and then all IR messages sent by the RCX via SendMessage would get dumped, one per line, in decimal, to stdout. Additional parameters could make the format be comma-delimited, (...) (25 years ago, 24-Sep-99, to lugnet.robotics.rcx, lugnet.robotics.rcx.nqc)
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| | Re: Listening to IR via NQC
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(...) You can sometimes fake it by sending "bad" codes in -raw mode with verbose mode turned on (-v) and a long timeout (-t). For example, to examine the Lego remote codes I kept typing this: nqc -v -t 2000 -raw 10 Since I didn't have an RCX around (...) (25 years ago, 24-Sep-99, to lugnet.robotics.rcx, lugnet.robotics.rcx.nqc)
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| | Re: Listening to IR via NQC
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(...) Yes, that is what I'm looking for. Unless anyone else knows of anything, I guess it's time to dive into the coding. :) (...) Yeah, that would work great. Does anyone have code that does this? (Don't want to reinvent the wheel...) I know of (...) (25 years ago, 24-Sep-99, to lugnet.robotics.rcx, lugnet.robotics.rcx.nqc)
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| | Re: Listening to IR via NQC
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(...) If I understand you correctly, then this is more difficult than it sounds, because the IR tower shuts down after a few seconds after the PC stops transmitting. Things work fine if the PC initiates a conversation (e.g. by asking the RCX to send (...) (25 years ago, 23-Sep-99, to lugnet.robotics.rcx, lugnet.robotics.rcx.nqc)
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| | Listening to IR via NQC
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I know that NQC can send IR messages; can it -- or any other command-line program -- listen to the IR port and dump any incoming messages to a file (or stdout)? (25 years ago, 23-Sep-99, to lugnet.robotics.rcx, lugnet.robotics.rcx.nqc)
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| | NQC mentioned in Swedish technical weekly!
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Hello! When reading this week's 'Ny Teknik' (New Technic), a weekly magazine for engineers, I found a short note about NQC. The article is about Lego Mindstorms, which is just about to be released here in Sweden, and the last part of the article (...) (25 years ago, 23-Sep-99, to lugnet.robotics, lugnet.robotics.rcx.nqc)
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| | Re: NQC 2.0 and some math questions
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A bug in the document. * and / are legal for any expressions. % is restricted to constants. I know the restrictions are confusing. The problem is that the RCX opcodes are somewhat incomplete. Now that I think about it, I can probably generate (...) (25 years ago, 23-Sep-99, to lugnet.robotics.rcx.nqc)
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| | NQC 2.0 and some math questions
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Dave, You state in your documentation that * / and % can be used on constants only, but your example has x * Y in it. What is it that you mean? Does this mean that one can only do a y = 5*4 using these math routines? Does this mean that, for (...) (25 years ago, 22-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: NQC 2.0 has been released
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(...) Yep, you got me. Should've been "one bug report". Dave (25 years ago, 22-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: NQC 2.0 has been released
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(...) That would be "one _known_ bug", right? :) 2.0 looks great, by the way. (25 years ago, 22-Sep-99, to lugnet.robotics.rcx.nqc)
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| | NQC 2.0 has been released
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First beta had only one bug, and second beta seems stable, so NQC 2.0 is finally released. Actually, a lot of the delay was because I was wrapping up the documentation. For more information, see (URL) Baum (25 years ago, 22-Sep-99, to lugnet.robotics.rcx.nqc, lugnet.robotics)
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| | I have two brains!
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Or at least two RCXs. (Thanks Jeff.) Now, with the aid of my friend Paul and his mindstorms set, it's time to go about implementing Pong. (25 years ago, 22-Sep-99, to lugnet.robotics, lugnet.robotics.rcx)
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| | How to get ROM image on Win95/98?
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Hi, Has anyone tried to obtain a ROM image on a Win95/98 box? Also where can I find a dissambler for the ROM image? Thanks Andy (25 years ago, 21-Sep-99, to lugnet.robotics.rcx)
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| | Re: Tasks vs. program slots
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(...) Yes, it appears to use the same packet level formatting. It does use a new bytecode (0xd2) that isn't seen elsewhere. This bytecode needs two bytes of data to follow. These three bytes of "payload" are encoded the usual way with a three byte (...) (25 years ago, 20-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: Tasks vs. program slots
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(...) Dave, It is basically just exactly what you describe. It usually takes about 200us or so to "see" the incoming 38KHz signal, common I suppose for an integrator to react to the signal getting through the band-pass filter, then a Schmidt trigger (...) (25 years ago, 20-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: Code Repository
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The advantage to using lego.gerf.org, is that with the faqomatic, you can upload any data (text, images, compiled source) into 'bags'. This allows anyone upload what ever they feel they need to compleat their idea. Of course, the all web interface (...) (25 years ago, 19-Sep-99, to lugnet.robotics.rcx.nqc)
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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: Q:#include and RCXCC 3.0 beta help requested
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There was a bug with #include for files using MSDOS line endings in NQC 1.0b1. I'm pretty sure RcxCC beta 3.0 used this version of NQC. The bug was fixed in NQC 1.0b2, which is available from (URL) for an include path, try setting the environment (...) (25 years ago, 19-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Q:#include and RCXCC 3.0 beta help requested
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Hello. I have two questions about #include. I am using RCXcc Beta 3.0. 1. How do you specify the default include path. Is there an environment var? 2. When I use the full path (E:\lego\application...\file.nqh) I get an error that says there is no (...) (25 years ago, 19-Sep-99, to lugnet.robotics.rcx.nqc)
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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: Tasks vs. program slots
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(...) They are one and the same. When transmitting, the IR tower just uses the RS-232 TXD line to switch on the 38kHz carrier. It also has some timing circuitry to keep it alive, and an Rx side, but the Tx is painfully simple. You'll probably see (...) (25 years ago, 18-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: Tasks vs. program slots
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(...) The Sharp GP1U581Y is a 38kHz receiver that incorporates an amp, a limiter, a bandpass filter, and a demodulator ... outputs a low while receiving an IR signal, a +5V high when not. It does NOT do any decoding. (...) From what I've been seeing (...) (25 years ago, 18-Sep-99, to lugnet.robotics.rcx.nqc)
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| | [OT] Decoding the LEGO 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.nqc)
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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: Tasks vs. program slots
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(...) What exactly does the Sharp IR receiver do? If it uses Sharp's ASK modulation, then you may have a problem. Ideally, what you want is something like a phototransistor to a good preamp, followed by a bandpass around 38kHz, then some sort of (...) (25 years ago, 18-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: Code Repository
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(...) I agree, a central site is key to this working. I thought a web site might be able to give the best interface, especially if it had a java front end that facilitated checking code in/out. (...) In the sample code that came with the NQC (...) (25 years ago, 18-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Performance problem with Java API
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Hi! I am currently working on a Java API for the RCX to implement the features of the PBrick (SPIRIT.OCX) interface in Java. So far, using the Java Comm API 2.0 and Kekoa Proudfoot's description, it does everything right except for one thing: (...) (25 years ago, 18-Sep-99, to lugnet.robotics.rcx)
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| | Re: Code Repository
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(...) Pick one to be master and have the others shadow it for better performance? (25 years ago, 18-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: Code Repository
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Whoops, there are already 4 propositions of nqc code repository. Which one is ideal? imho, the best we can have is only one place, with all the stuff. Or some kind of colaboration between the different hosts. Else, this won't be as usefull as it (...) (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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(...) 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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| | Re: Code Repository
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(...) Or perhaps a more general one sitting atop the others (integrationally or as a launching point). Because even when there's pseudocode for something, the actual implementation in, say, pbFORTH, may differ fundamentally from the implementation (...) (25 years ago, 16-Sep-99, to lugnet.robotics, lugnet.robotics.rcx.nqc, lugnet.admin.general)
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| | RE: Code Repository
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Todd: Nice work on the sample page, very easy to use and browse. I would find this format very useful. Jeff Jeffrey Hazen jeffrey.hazen@northmill.net (25 years ago, 16-Sep-99, to lugnet.robotics, lugnet.robotics.rcx.nqc)
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| | Re: Code Repository
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(...) Since many algorithms apply across languages, what about a single repository for all code? (How about lugnet.robotics.rcx.code?) True, it would increase the noise-to-signal ratio for many, but it would Keep It Simple. Also, I favor follow-ups (...) (25 years ago, 16-Sep-99, to lugnet.robotics, lugnet.robotics.rcx.nqc, lugnet.admin.general)
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| | Re: Code Repository
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(...) Since many algorithms apply across languages, what about a single repository for all code? (How about lugnet.robotics.rcx.code?) True, it would increase the noise-to-signal ratio for many, but it would Keep It Simple. Also, I favor follow-ups (...) (25 years ago, 16-Sep-99, to lugnet.robotics, lugnet.robotics.rcx.nqc, lugnet.admin.general)
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| | Re: Code Repository
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(...) As LDraw enthusiasts have discovered (via the lugnet.cad.dat.* hierarchy), having special newsgroups for these sorts of things really makes it nice to follow discussions that pop up as well, since they're simply lower-level nodes in the (...) (25 years ago, 16-Sep-99, to lugnet.robotics, lugnet.robotics.rcx.nqc, lugnet.admin.general)
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| | Re: Code Repository
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(...) Hi Brian, Yea, if someone wanted to be an editor of the /robotics/rcx/nqc/ area of the www.lugnet.com website, a code repository would be very easy indeed to set up on LUGNET. For example, John VanZwieten is editor of the /cad/datsville/ area (...) (25 years ago, 16-Sep-99, to lugnet.robotics, lugnet.robotics.rcx.nqc)
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| | Code Repository
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Anyone interested in setting up a code repository for NQC? It could be a place to look for cut and paste routines that you could use in your project. If you had a cool piece of code that had some reuse value, then you could upload it to the (...) (25 years ago, 16-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: NQC 2 Request
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Dave, Thanks for all the comments in the thread. As I have not looked at the API supplied by the firmware I did not realise that the NQC api was such a close match. Adding the functions as you have suggested is a very neat solution. It is nice to (...) (25 years ago, 16-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: NQC 2 Request
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|
(...) If anyone wants to add these functions into their own code... void OnFwdFor(const int m, const int &t) { Fwd(m); OnFor(m, t); } void OnRevFor(const int m, const int &t) { Rev(m); OnFor(m, t); } These should be efficient - everything will be (...) (25 years ago, 15-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: NQC 2 Request
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(...) No, that's not a big deal, I don't mind a "superset". Most of the NQC 2.0 changes were to make terminology consistent between RCX Code and NQC, etc. Dave (25 years ago, 15-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: NQC 2 Request
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That's all that really happens when I add new calls anyway. Anything that even remotely looks like a function call is either an inline function of a macro, and not part of the language itself. I guess the real question is if its appropriate to (...) (25 years ago, 15-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Version 1.5
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I have seen a Mindstorm box here in the USA for version 1.5 apart from 10 less pieces and a recomendation for a 166Mz PC what is the diffference. I here there are lot of bug fixes is this in the PC software or the RCX brick. I have seen coments of a (...) (25 years ago, 15-Sep-99, to lugnet.robotics.rcx)
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| | Re: NQC 2 Request
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Dave, I like the finite coltrol of the motors myself but can understand the request. It may encourage the "younger" programmers to use the language. Does adding the commands go against your move to get closer to the API? The user could always create (...) (25 years ago, 15-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: NQC 2 Request
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Why not just use a macro instead of expanding the language? (...) Joel Shafer joel@connect.net (25 years ago, 15-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: NQC 2 Request
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Its a little too late to add to the NQC 2 API, but I can add it in a later release if people really want it. Anyone second the idea? Dave Baum (...) (25 years ago, 15-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: RCX 'brick connectors' and how-they-work??
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On the subject of making connector blocks, I have been very successful with taking the conductor strips you get as a S@H service pack, hacking two squares out, slotting one edge of each of the 2x2s, soldering wires to that side, slotting the inside (...) (25 years ago, 14-Sep-99, to lugnet.robotics, lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | Re: RCX 'brick connectors' and how-they-work??
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Thanks, Jonathan && Others... I'll look at the patent. With all the 'clones' out there, is it likely that Lego would complain if someone made compatible-but-not- identical connectors?? How do they handle the Clone Market?? Couple of questions, (...) (25 years ago, 14-Sep-99, to lugnet.robotics, lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | NQC 2 Request
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Hi, I just wondered whether it might be handy to add OnFwdFor(motors) and OnRevFor(motors). Regards Dave (25 years ago, 14-Sep-99, to lugnet.robotics.rcx.nqc)
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| | RCX as a universal remote?
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Here's a thought: You're in the bedroom with your trusty RCX on the floor. You're watching TV, but the tuner is in another room. You point your remote at your RCX, change channels, and the RCX scurries out of the room, off to repeat the IR command (...) (25 years ago, 13-Sep-99, to lugnet.robotics.rcx)
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| | Re: RCX Currnet Rating?: And info on Internals??
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Kekoa, Many Thanks for your tireless digging. I have seen a lot of very interesting stuff you have unearthed. I think that more is often learned about Engineering by 'Reverse Engineering' than 'forward'! Years ago I used to get tons of old IBM (...) (25 years ago, 12-Sep-99, to lugnet.robotics.rcx)
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| | Re: RCX Currnet Rating?: And info on Internals??
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(...) It is commonly believed that the RCX contains a full rectifier, so if you supplied AC, that would work, but more importantly, if you supplied either polarity of DC, that would work also. The conversion to AC also requires a sufficiently large (...) (25 years ago, 12-Sep-99, to lugnet.robotics.rcx)
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| | Re: RCX Currnet Rating?: And info on Internals??
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I'm still not clear on exactly what the RCX enternal-power input will accept. Can anyone tell us what the internals really are?? If I view the RCX power connector closely, I read: 9-12V~ (nine dash one two Vee tilde) I would interpret that to mean: (...) (25 years ago, 12-Sep-99, to lugnet.robotics.rcx)
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| | Solved?? rotation sensor problem.
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I tried solutions posted on this newsgroup to fix the rotation sensor problem.But It didn't work stable enough. I tracked the sensor input and realized the sensor sometimes picked up transient signal between two states. To solve this problem, I (...) (25 years ago, 10-Sep-99, to lugnet.robotics.rcx.legos)
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| | Re: RcxCC downloads
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I wrote first something like "It seems that this NQC newsgroup is not very active, but that's probably because NQC is 99.999% bug free and so is RCXCC...". So i was definitely not asking more traffic or so, simply looking at what has already been (...) (25 years ago, 9-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: RcxCC downloads
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(...) I want to second that. I missed the NQC online help in version 3 also. It's nice to have a quick reference guide handy. Joel Shafer joel@connect.net (25 years ago, 8-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: RcxCC downloads
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(...) Your version 3 is also great! When NQC 2 is released will the NQC help be put back in? I thought it was real handy addition on those long nights. --- DonC donc@cccd.edu (25 years ago, 8-Sep-99, to lugnet.robotics.rcx.nqc)
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| | RE: Help with connecting pyroelectric sensor
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(...) I read the sheet as saying the MINIMUM load is 125K, and the block diagram indicates a buffered output. It would be a good idea to buffer the output, but may not be strictly necessary. The bit about the reference being 20uA capable is correct, (...) (25 years ago, 8-Sep-99, to lugnet.robotics.rcx)
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| | RE: Help with connecting pyroelectric sensor
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Here's the link to the pyro sensor (URL) The schematic indicates that the reference moves relative to the output... I think the reference and output terminals are mislabelled. Given that they are mislabelled... The reference output has a 20uA max (...) (25 years ago, 7-Sep-99, to lugnet.robotics.rcx)
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| | RcxCC downloads
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Just because people want some more traffic in this newsgroup and to quantify the statement of Dave Baum, RcxCC version 2.3 was downloaded close to 3000 times from my web site up to now. Mark Overmars (...) (25 years ago, 6-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: RCX Currnet Rating?
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Yes it is slow, if you count 1/2 a second slow, but not horrible. The big problem comes with control. Finding neutral again. NQC to the rescue. I find its better for this application than the RIS software. More open for creating servo control loops. (...) (25 years ago, 6-Sep-99, to lugnet.robotics.rcx)
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| | Re: RCX Currnet Rating?
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You mean you use the red motor/switch combination as a sort of 'electronic' fuse? Oh, right. While I'm typing I suddenly see what you mean. You use an external power supply for the motors. Clever. Isn't the switching a little slow using the (...) (25 years ago, 5-Sep-99, to lugnet.robotics.rcx)
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| | Re: RCX Currnet Rating?
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The best way to avoid high current running thru the brick is to control a small red motor which drives one of the polarity switches which is hooked up to a battery pack and that in turn runs the main motors. We had this problem at the LEGO (...) (25 years ago, 5-Sep-99, to lugnet.robotics.rcx)
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| | Re: RCX Currnet Rating?
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MJ, The RCX itself does not need a lot of power. However, if you're going to run 2 motors off each output port (a total of 6), 200 mA won't be enough. I expect the motors to draw at least 100 mA each. Even more when stalled. Maximum power to be (...) (25 years ago, 5-Sep-99, to lugnet.robotics.rcx)
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| | Re: decoding a message sent by an RCX
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(...) I second that! I tried using the "native" language and its limitations baffled me. I never got a program downloaded. I jumped straight to NQC and have done several now. Good work Dave! DLC (25 years ago, 5-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: decoding a message sent by an RCX
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Dave Baum wrote: [snip] (...) Better yet, make it generate the code that I want it to generate, not what I tell it to generate. Thanks for giving us all such a great language ... without NQC I most likely would have an RCX collecting dust. - Nick - (25 years ago, 5-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: decoding a message sent by an RCX
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(...) I wondered about that - hardly any traffic in the newsgroup despite numerous downloads of NQC. I hope its because people are just too busy building stuff and programming it with NQC and RcxCC. Perhaps I should add a few more bugs to NQC just (...) (25 years ago, 5-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: RCX Currnet Rating?
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(...) I'd bet you are safe with a 200 mA adapter. I have been using a 120 mA adapter for a while now with no problems. -Kekoa (25 years ago, 5-Sep-99, to lugnet.robotics.rcx)
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| | RCX Currnet Rating?
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Hi, I have a 9V adapter that will fit the RCX. It has a current rating of 200mA. What is the current rating for ther RCX? I have seen adapters that are rated from 100mA up to 800mA. Thx...MJ (25 years ago, 4-Sep-99, to lugnet.robotics.rcx)
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| | Re: decoding a message sent by an RCX
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(...) [...] I think something like this was already made by LEGO itself in the lab while creating the RCX/CyberMaster software. I say this because they seem to have forgot to remove the CABLE mode of transmission from the Spirit.ocx when deploying (...) (25 years ago, 4-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: decoding a message sent by an RCX
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Woaw ! This could be great to have a full featured rcx expansion board... It should however be not too expensive, and in my opinion very basic to allow anything to be made. A "simple" (hehe :-) 8 bit Input / Output expander would be very, very nice. (...) (25 years ago, 4-Sep-99, to lugnet.robotics.rcx.nqc)
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| | RE: decoding a message sent by an RCX
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Dave wrote... (...) Remember, you can send arbitrary ASCII data using pbFORTH. For example, to send "Hello World" you just use... : HELLO ." Hello World" CR ; Or to identify your RCX, you could use something like... : WHOAMI ." I am RCX number " (...) (25 years ago, 4-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: decoding a message sent by an RCX
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(...) Yes, you are correct - 11 bits total per byte. And yes, this is very non-standard. I believe the signal is inverted - meaning that IR light is present for "0" bits, and no light for "1" bits. But I'm going from memory here and haven't looked (...) (25 years ago, 4-Sep-99, to lugnet.robotics.rcx.nqc)
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| | decoding a message sent by an RCX
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hiya, I have been working on an idea to extend the number and type of devices that the RCX can control. I started with the idea of encoding serial data on one of the motor lines and decoding that in a PIC to do <stuff>. However, because working at (...) (25 years ago, 3-Sep-99, to lugnet.robotics.rcx.nqc)
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| | Re: Handy Board software
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take a look at Ray's Robotic Computer. i have a url somewhere. This dude makes a 68HC11 mini board in modules from his basement. Completely assembled and tested versions too. I found him through altavista a couple of times +breiler (...) (25 years ago, 2-Sep-99, to lugnet.robotics, lugnet.robotics.rcx.legos)
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| | HOWTO- temporary URL
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Hey! I finally have the HOWTO back up at a temporary URL- (URL) old URL may be back up as soon as this evening or afternoon, but in the meantime, please point your browsers here. Thanks for putting up with me- Luis P.S. I hope to make several (...) (25 years ago, 31-Aug-99, to lugnet.robotics.rcx.legos)
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