 | | Psion 5mx and pbForth
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I've mentioned my attempts to get a psion series 5 to talk to pbForth before. I've finally got it sorted enough to be useful. Anyone with a Psion Series 5mx machine (possibly a series 5 also) may like to look at (URL) It transfers firmware and text (...) (23 years ago, 9-Mar-02, to lugnet.robotics.rcx.pbforth)
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| | Re: Single acting pneumatics with spring return
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(...) True, but there is one notable difference, as others have pointed out before: When compressiong air, the pressure difference is limited only by implementation details. The pressure inside the tank usually is not just slightly higher than (...) (23 years ago, 7-Mar-02, to lugnet.technic, lugnet.robotics)
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| | New Book - Core Lego Mindstorms
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As some of you know I've been working on a Lego Mindstorms book for Java programmers. The official release date is March 15, 2002 so it seems like a good time to announce it. The intent of this book is to get Java programmers interested in Lego (...) (23 years ago, 9-Mar-02, to lugnet.announce, lugnet.robotics) !
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| | Re: RCX as a PGP engine
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(...) If you need floating point numbers the leJOS JVM for the RCX uses floating point: (URL) seems like a very intersting idea. I actually wanted to skip the RCX altogether and somehow link up a networking protocol using just the IR Towers. One (...) (23 years ago, 9-Mar-02, to lugnet.robotics.rcx.legos)
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| | Re: RCX as a PGP engine
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(...) It really isn't that limited when you consider other platforms that run full PK systems, such as the Dallas Semiconductor iButton. It has a much more limited processors, more limited RAM, and you write your code in Java so it has to be (...) (23 years ago, 9-Mar-02, to lugnet.robotics.rcx.legos)
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| | Re: RCX as a PGP engine
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(...) Excellent point, Benton Jackson e-mailed me with the following: (...) Good idea using a external sensor to seed some sort of random number generator function. However, the codebase for PGP is pretty darned large and after looking at the source (...) (23 years ago, 9-Mar-02, to lugnet.robotics.rcx.legos)
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| | Re: RCX as a PGP engine
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(...) The key word is a "good" generator. Random() is way too predictable to use in a crypto application. (23 years ago, 9-Mar-02, to lugnet.robotics.rcx.legos)
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| | Re: exponents, e^
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(...) Remote control and lejos: You can download a Java object to accept commands from the remote. Check out (URL) lejos. Roger (23 years ago, 9-Mar-02, to lugnet.robotics.rcx.legos)
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| | Re: NQC "No reply from RCX" Help Please
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Wow! Hey..thanks..that was it. I hadn't changed my batteries in any of my RCX since I got them. When I changed all of them a few weeks ago, I must have lost the firmware. I saw your name..and was like.."hmm where have I heard of you before" then I (...) (23 years ago, 9-Mar-02, to lugnet.robotics)
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| | Re: NQC "No reply from RCX" Help Please
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Is the firmware still installed on the RCX? When you turn it on if it just shows a single digit, then there isn't any firmware. With firmware loaded you should see something like "00.00!1" where ! is the LCD icon of a person. If firmware is not (...) (23 years ago, 9-Mar-02, to lugnet.robotics)
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