 | | Re: Help with 9738 LEGO Mindstorms Remote Control
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I just got one myself and it seems to work fine. The A, B, and C buttons turn on the motors (in either direction) as long as they are held. You can even hold multiple buttons down to turn more than one motor at the same time. The Message buttons (1, (...) (27 years ago, 11-Jul-99, to lugnet.robotics.rcx)
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| | Help with 9738 LEGO Mindstorms Remote Control
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Hi, Purchased the 9738 LEGO Mindstorms remote control and it doesn't seem to do anything. Has anyone else used one of these? It's my expectation that the remote allows the RCX to be controlled directly with out the program interface. Is that not (...) (27 years ago, 11-Jul-99, to lugnet.robotics.rcx)
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| | Re: JVM port status
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(...) Wow, looks like this is really off to a strong start! When/if you're ready for a dedicated mailing list/group, let me know if there's any way I can help out. The .robotics.rcx group is perfectly fine too, if you'd like to use that, although it (...) (27 years ago, 7-Jul-99, to lugnet.robotics.rcx)
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| | [OT] Feathers 'n Lead...
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(...) I think so too. I remember seeing some footage of a feather and a hammer? being dropped by an astronaut on the moon's surface. They both hit the ground at the same time, which proves to mee that even a single feather is as heavy as a hammer, (...) (27 years ago, 2-Jul-99, to lugnet.robotics.rcx)
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| | Windows file mirroring
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OK, I've now mirrored the two (apparently) necessary files for LegOS under windows at this URL: (URL) those of you in the US, this should provide a faster download of Gavin's stuff (though not necessarily by much, since Gavin's site is surprisingly (...) (27 years ago, 29-Jun-99, to lugnet.robotics.rcx)
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| | FW: Alternate C compiler for LegOS
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Luis, here's a forwarded message with the links to Gavin's executables. You need to download the latest Cygwin distribution too, from (URL) (...) Alternatively, have a look at (URL) I've done a similar but lazier job of just providing an add-on lump (...) (27 years ago, 28-Jun-99, to lugnet.robotics.rcx)
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| | 3in1 Car #8286 as RCX AddOn?
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Hi all. This is a bit OT, but has some relevance for people getting ONE MORE KIT to round out their RCX... LEGO S@H Canada has the 8286 3in1 car on sale for $90CDN With taxes and everything, that works out to about $70 US! This set has 726 peces (...) (27 years ago, 28-Jun-99, to lugnet.robotics.rcx, lugnet.build)
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| | Re: RCX Tower Internals
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(...) I'm pretty sure the echo is not direct, it goes out through the emitters and back into the receiver. This is demonstrated by varying the lighting conditions and/or the baud rate and noting the response. If the echo were direct, you'd receive (...) (27 years ago, 10-Jun-99, to lugnet.robotics.rcx)
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| | RE: RCX Tower Internals
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Kekoa wrote... (...) This might be a really simpleminded circuit. As far as I can tell there are a pair of 132's (simple HC logic chips) - one for each direction. They implement direct echo back, which implies that the channel is really only half (...) (27 years ago, 10-Jun-99, to lugnet.robotics.rcx)
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| | Re: RCX Tower Internals
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Kekoa Proudfoot <kekoa@pixel.Stanford.EDU> wrote in message news:FCzorK.Gyn@lugnet.com... (...) (URL) and compare to see if they look similarly. For me at least, the emitters (...) By the way.. Kekoa, I've looked at your page.. And I've discovered (...) (27 years ago, 8-Jun-99, to lugnet.robotics.rcx)
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| | Re: RCX Tower Internals
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(...) Mine is like this too, I think. See (URL) compare to see if they look similarly. For me at least, the emitters and detector are slightly above the "clear" section. (...) For me at least, there is no way the components can line up with the (...) (27 years ago, 8-Jun-99, to lugnet.robotics.rcx)
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| | RCX Tower Internals
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Hi All. I've just had some wierdness with my tower and decided to open it up to see what's inside. My basic issue is that the two emitters and the detector are not lined up (even close) with the "Clear" lens section on the front of the tower. Is (...) (27 years ago, 7-Jun-99, to lugnet.robotics.rcx)
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| | RE: Floating point support for 1142 bytes
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(...) Let's face it Kekoa, you just couldn't stand not REALLY knowing what the group was talking about so you went and did the work we should have done before the discussion even started. :-) (...) (URL) That's a bit easier to deal with. Way to go. (...) (27 years ago, 28-May-99, to lugnet.robotics, lugnet.robotics.rcx)
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| | Floating point support for 1142 bytes
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Following some discussion about the topic a few weeks ago, I was sufficiently curious and motivated enough to write a floating point library for the H8/RCX. Initially I thought I'd implement a non-IEEE floating point format optimized for the RCX, (...) (27 years ago, 27-May-99, to lugnet.robotics, lugnet.robotics.rcx)
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| | JVM port status
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The first phase of the JVM port to the RCX is complete (translating the existing 68HC11 code into C++). We are now testing that to make sure the port did not introduce bugs. The next steps (in parallel) are to finalize the RCX-specific classes and (...) (27 years ago, 21-May-99, to lugnet.robotics.rcx)
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| | differences between 9719 and 9747?
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What are the exact differences between Mindstorm pack 9719 and 9747 ? -- ***...*** Stefan Prescher prescher@hermes.fho-emden.de (27 years ago, 16-May-99, to lugnet.robotics.rcx)
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| | RCX JVM port status
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I have created a web page for the RCX JVM port. It contains a brief description of the project, who is working on it, the task decomposition, and the status of those tasks. If anyone is interested in working on the project, please send me email. The (...) (27 years ago, 11-May-99, to lugnet.robotics.rcx)
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| | Re: Some goals, ideas, etc. for a new bytecode interpreter (long)
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(...) Single-stepping through instructions would be a mode offered by the interpreter, and wouldn't require any breakpoints to be set. I suppose what the debugging information could contain is, instead of a list of valid breakpoints, a list of (...) (27 years ago, 10-May-99, to lugnet.robotics.rcx)
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| | Re: Some goals, ideas, etc. for a new bytecode interpreter (long)
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(...) You have 4 7-segment characters which could display a 4 character text string (albeit with some of the characters being different case and some confusion between characters). (...) Adding limited functions to check the memory usage without (...) (27 years ago, 10-May-99, to lugnet.robotics.rcx)
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| | Re: Some goals, ideas, etc. for a new bytecode interpreter (long)
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(...) Sure, but that's what zero padding is for. Since the opcode is IR-only, you don't care too much about length. The only length restriction comes from the second digit of the opcode, assuming you're using the ROM to receive incoming IR data. (...) (27 years ago, 10-May-99, to lugnet.robotics.rcx)
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