 | | Re: Anyone know how to build a stall sensor?
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(...) Yes. I just got a rotation sensor. Trouble is that the motors could stop for a variety of reasons (like the robot isn't moving). That isn't the real reason though (I could always handle that in software). The real reason is that ever since I (...) (23 years ago, 6-Sep-01, to lugnet.robotics.rcx)
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| | Re: Anyone know how to build a stall sensor?
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(...) Yes. I found on article on using the battery voltage to determine the same thing, i.e. more current, less volts. To do it you need replacement firmware. I use leJOS (a Java VM), I'm one if the developers, so I could go in that way. I'm going (...) (23 years ago, 6-Sep-01, to lugnet.robotics.rcx)
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| | RTSJ
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So you're in to Java and the RCX? If you're in to it deep then you might be interested in the Real Time Specification for Java (RTSJ) at: (URL) - Paul (23 years ago, 6-Sep-01, to lugnet.robotics.rcx.java)
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| | JStamp
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So I don't know if this is heresy on a Lego web site but if you're interested in Java and RCX you'll probably find this interesting too: (URL) I have no affiliation with this company, I am a contributer to leJOS. But I do like robotics and I do like (...) (23 years ago, 6-Sep-01, to lugnet.robotics.rcx.java)
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| | Re: Anyone know how to build a stall sensor?
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(...) Hi Paul, I was interested in doing the very same thing a while ago. It sure would save on sensors if the motors had their own feedback! I know (as you are probably aware also) that the current can be monitored using the cybermaster. I saw how (...) (23 years ago, 6-Sep-01, to lugnet.robotics.rcx)
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| | Re: Anyone know how to build a stall sensor?
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I assume you have already discarded the simple approach of using a rotation sensor and detecting that it has stopped rotating. (This gives you an odometer for free!) Or if you don't have a rotation sensor, you can use the half width six hole pulley (...) (23 years ago, 6-Sep-01, to lugnet.robotics.rcx)
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| | Re: Anyone know how to build a stall sensor?
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(...) No. I didn't know it existed. Of itself it is interesting, but I actually want to use stalls as a means of collision detection. (...) (23 years ago, 6-Sep-01, to lugnet.robotics.rcx)
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| | Re: legOS - Which site?
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(...) Version 2.5 from Sourceforge is the latest. (...) Installed it the other day using these instructions without any problems: (URL) only thing that varies from memory, was setting the environment variables. (...) Not sure, but I don't think so. (...) (23 years ago, 6-Sep-01, to lugnet.robotics.rcx.legos)
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| | legOS - Which site?
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Hi, I'm still new to legOS, and the RIS come to that, and while looking for info on legOS came across both of these : (URL) seem to have different versions. Noga.de seems to have more up-to-date newsposts despite having an older version of legOS. (...) (23 years ago, 6-Sep-01, to lugnet.robotics.rcx.legos)
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| | Re: Anyone know how to build a stall sensor?
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(...) I suppose you've already considered using the white 24 tooth clutch (looks like a gear)to limit the torque and prevent motor stalls... Jerry (23 years ago, 5-Sep-01, to lugnet.robotics.rcx)
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| | Anyone know how to build a stall sensor?
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Hi, I'd like to be able to monitor the current being drawn by a motor using the RCX (not the CyberMaster :-( ), so that I can detect stalls and possibly spins. I can't believe that this is particularly hard but I can't find any references to one on (...) (23 years ago, 5-Sep-01, to lugnet.robotics.rcx)
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| | Re: rotation sensor question
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Hi Jurgen, (...) Ok, then I will anihilate my answer/question... :o) (...) Ok, then I can save some time there... Thanks! (...) It's working perfectly, thank you! It's been up and running flawless since 1.0.0beta3, for all I know... Regards, Martin (...) (23 years ago, 5-Sep-01, to lugnet.robotics.rcx.java)
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| | Communication API between RCX and a PC
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Hi there, Have you seen this project: (URL) an API for communication between your PC and RCX using InputStream's and OutputStream's. Regards, Martin E. Nielsen (23 years ago, 5-Sep-01, to lugnet.robotics.rcx.java)
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| | Re: Why compiler can't find header file program.h?
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I found the reason, there are two config.h, one is for kernel in boot directory, one is for dll in dll-src, they have different definition. Zhengrong (...) (23 years ago, 5-Sep-01, to lugnet.robotics.rcx.legos)
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| | Why compiler can't find header file program.h?
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I add lines as below into lnp.c #ifdef CONF_PROGRAM #include <sys/program.h> #endif But I got error message when compile it. lnp.c:36: sys/program.h: No such file or directory In some lnp.c file, there are #ifdef CONF_VIS #include <dlcd.h> #include (...) (23 years ago, 5-Sep-01, to lugnet.robotics.rcx.legos)
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| | Re: rotation sensor question
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Hej Martin, (...) probably nobody will ever know. A lot has changed in the last month. (...) That's not necessary, it is already done in showNumber (but not in setNumber). (...) So it's working for you, I hope? Jürgen (23 years ago, 4-Sep-01, to lugnet.robotics.rcx.java)
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| | Instructions for LegOS USB support
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A friend of mine recently bought the 2.0 RCX and sent me the following information regarding getting USB and LegOS to play nice. He did this on a Win2K system. I have the old 1.0 RCX so please don't ask me how to make this work. Here is his e-mail (...) (23 years ago, 4-Sep-01, to lugnet.robotics.rcx.legos)
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| | Re: rotation sensor question
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Hi there, (...) What happened? nothing appeared in the LCD? This looks 99% like the example I did yesterday - except that I put in a "LCD.refresh()" after the #showNumber call. I run 1.0.2 RC4 under Linux... // Martin (23 years ago, 4-Sep-01, to lugnet.robotics.rcx.java)
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| | Re: RCX IR protocol
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Hi, Juergen has done a small mistake in his example. (...) Better it should be ~f7=~11110111=00001000=08. If you want to get a little bit of math you may add every number to its complement and you will always get ff for the result. If we take (...) (23 years ago, 4-Sep-01, to lugnet.robotics.rcx)
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| | Re: RCX IR protocol
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(...) Take a look at (URL) (...) 55 ff 00 (...) complement, i.e. invert every bit separately. So for example ~f7=~11110111=00001000=10. (...) Good luck and show it to us when you are done Jürgen (23 years ago, 4-Sep-01, to lugnet.robotics.rcx)
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