 | | Re: Multiplexing 4 touch sensors on an RCX input port
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(...) I don't think that would work very well, as the lights have a rather low resistance, lower than a pressed touch sensor ((URL) as a purist you can use the cybermaster sensors to multiplex three inputs ((URL) Jürgen Stuber <stuber@loria.fr> (...) (21 years ago, 9-Sep-03, to lugnet.robotics.rcx)
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| | Re: Multiplexing 4 touch sensors on an RCX input port
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(...) LEGO purists use LEGO light bricks as resistors. I created potentiometer bricks, where the resistance is variable for each brick. Two stacks of 4 potentiometer bricks can be seen to the left of the RCX. In this case each stack puts the (...) (21 years ago, 9-Sep-03, to lugnet.robotics.rcx)
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| | Multiplexing 4 touch sensors on an RCX input port
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You can use four touch sensors per input port on the RCX. The Cybermaster touch sensors have resistors in parallel, and this is how the Cybermaster knows which implement is attached to the tracked robot. It uses its sensor input as a temperature (...) (21 years ago, 5-Sep-03, to lugnet.robotics.rcx)
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| | RE: leJOS & BricxCC news
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(...) OK, I've looked at your wish list and have the following comments with respect to how I see the pbForth implementation of DCC. 1. How important is it to have more than one port with DCC capabilities. The reason I'm asking is that it "would be (...) (21 years ago, 7-Sep-03, to lugnet.robotics.rcx, lugnet.trains, lugnet.robotics.rcx.pbforth)
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| | Re: USB Tower Performance [was leJOS/BricxCC news]
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(...) Doh! I forgot about Odd parity and the USB tower. I will see about fixing that little problem. Is your quad speed boot loader source significantly different from Kekoa's fastdl.s (with the parity disabling code removed)? I'd like to see it if (...) (21 years ago, 7-Sep-03, to lugnet.robotics.rcx)
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| | Re: leJOS & BricxCC news
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(...) Hmmm. I was seriously considering writing a leJOS package to support the LDCC IR Protocol. (Here's why: (URL) ) What capabilities were you going to add? Depending on your timeline, you might convince me to try FORTH. (21 years ago, 7-Sep-03, to lugnet.robotics.rcx.java, lugnet.robotics.rcx, lugnet.trains, lugnet.robotics.rcx.pbforth)
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| | RE: pbForth & ROLL
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(...) John, As always, it depends. ROLL can sometimes be recovered gracefully, but not always. If you ROLL more than the stack depth, you'll shift some RAM that you probably don't want to shift - like the pbForth image itself. In that case, there's (...) (21 years ago, 6-Sep-03, to lugnet.robotics.rcx.pbforth)
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| | pbForth & ROLL
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(...) While testing my console the other day I kept getting pbForth to hang (or so it appeared). It turns out I was passing ROLL a number that caused it to do bad things. I'm wondering whether it should error out with "aborted stack underflow" or (...) (21 years ago, 6-Sep-03, to lugnet.robotics.rcx.pbforth)
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| | Re: USB Tower Performance [was leJOS/BricxCC news]
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In a recent post, John Hansen raised some questions about USB Tower [1] quad speed downloading and [2] varioustimeouts and difficulty with certain optocdes. Here's a bit of an explanation. Lots of technical detail for those that are interested. (...) (21 years ago, 6-Sep-03, to lugnet.robotics.rcx)
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| | Re: Lego Mindstorms Robotic Sumo Question
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(...) Thanks Steve! Everything I wanted to know I found out on that website. Great information. Thanks again! David Perdue www.geocities.com/imroboguy (21 years ago, 6-Sep-03, to lugnet.events, lugnet.robotics.rcx)
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| | RE: leJOS & BricxCC news
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John, Thanks for continuing to work on this. It's one of the things that keeps me motivated to continue supporting pbForth. Now, there has not bee much traffic there lately, and I have not done much with it becuase as far as I know, things are "just (...) (21 years ago, 5-Sep-03, to lugnet.robotics.rcx.java, lugnet.robotics.rcx, lugnet.robotics.rcx.legos, lugnet.robotics.rcx.nqc, lugnet.robotics.rcx.pbforth)
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| | Re: trouble compiling brickOS
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(...) Hm, that should not happen. Try to start your hitachi compiler by hand, for example with "h8300-hms-gcc --version" to get an "I am alive" message from it, so you are sure it is installed as intended. If _you_ can't get it to work, configure (...) (21 years ago, 5-Sep-03, to lugnet.robotics.rcx.legos)
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| | Re: leJOS & BricxCC news
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In lugnet.robotics.rcx.java, Mark Riley wrote: [snipped] (...) I have incorporated the changes made to firmdl in the leJOS distribution into my BricxCC firmware downloader code. Now I can successfully download all the firmwares I have access to (...) (21 years ago, 5-Sep-03, to lugnet.robotics.rcx.java, lugnet.robotics.rcx, lugnet.robotics.rcx.legos, lugnet.robotics.rcx.nqc, lugnet.robotics.rcx.pbforth)
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| | Linremote
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Hello, I've wait a report from a friend for this software ... But he have no time to produce it ... Then I announce it here : Linremote permit you to control via PC (it the same soft that Dr Vegetable make : an remote control emulator). You can view (...) (21 years ago, 5-Sep-03, to lugnet.robotics, lugnet.robotics.rcx)
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| | Re: trouble compiling brickOS
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(...) I did! (...) It did complain and I did install the hitachi 8300 gcc version. Funny thing, after installing it, the configure script was still complaining that it cannot find the hitachi gcc compiler, although the binaries were right there in (...) (21 years ago, 5-Sep-03, to lugnet.robotics.rcx.legos)
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| | Re: Lego Mindstorms Robotic Sumo Question
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(...) David, To answer your question, everyone has their own way. But here's a link to a pretty well refined set of rules. (URL) should answer most of your questions. And, if you find yourself around Ann Arbor, Mi, in a couple weeks, you should stop (...) (21 years ago, 4-Sep-03, to lugnet.events, lugnet.robotics.rcx)
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| | Lego Mindstorms Robotic Sumo Question
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Hello all Mindstorms fans! I have a few questions regarding Robotic Sumo (Lego Mindstorms Robotic Sumo that is). I have gotten interested in Robotic Sumo and would like to learn a few more things about it. I would also like to know if everyone does (...) (21 years ago, 4-Sep-03, to lugnet.events, lugnet.robotics.rcx)
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| | Re: trouble compiling brickOS
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(...) Run ./configure!!! (...) Let me guess: You use the original c compiler of your linux distribution. May be that configure will complain that it does not find the gcc compiler? You run Linux on a Intel box. Your normal gcc will compile c to (...) (21 years ago, 3-Sep-03, to lugnet.robotics.rcx.legos)
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| | trouble compiling brickOS
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Hi! I am pretty new to lego and I started for a few days to make my rcx work under Linux. After I passed all the makefile issues, gcc 3.3 mlsl problems, I still get this error from memcpy.c: make[1]: Entering directory (...) (21 years ago, 3-Sep-03, to lugnet.robotics.rcx.legos)
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| | Additions to the ILTCO Library, and a call for a librarian
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ILTCO is pleased to announce some additions to the ILTCO library. Many of the presentations given during the train sessions at BrickFest 2003 have been archived and are available for your reading pleasure here. (URL) include presentations on - (...) (21 years ago, 3-Sep-03, to lugnet.announce.iltco, lugnet.cad.dev, lugnet.trains.org, lugnet.trains, lugnet.robotics.rcx, lugnet.publish) !
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