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 Robotics / RCX / *2230 (-20)
  Re: makelx issues
 
Kajim schrieb: (...) Depending on your configuration, there may or may not be certain error messages when building the compiler. They mostly deal with missing system libraries, which doesn't avail to much - legOS has its own libraries. (...) This (...) (25 years ago, 31-Mar-00, to lugnet.robotics.rcx.legos)
 
  makelx issues
 
Sorry to post configuration issues again; however, I have I beleive sucessfully compiled the new egcs 1.1.2[altho the self tests at the end fail...] and can begin to compile legOS 0.2.3 but makelx segfaults every time it is run... The only guess I (...) (25 years ago, 31-Mar-00, to lugnet.robotics.rcx.legos)  
 
  controling two motors with only one output?
 
Hi guys, I was thinking about multiplexing motors, and it came to me that it should be easy to control two motors (only one at a time though) using one output of the RCX. Below, I describe my general idea, but I would like to know if you tackle this (...) (25 years ago, 31-Mar-00, to lugnet.robotics.rcx)  
 
  Re: Modulo operator in NQC
 
(...) The limitation is more historical than anything else. Originally expressions were all evaluated at compile time, which is why I have a bunch of operators (%, >>, <<) that have no corresponding bytecodes in the firmware. Over the last few (...) (25 years ago, 31-Mar-00, to lugnet.robotics.rcx.nqc)
 
  Problems reading active sensors with legos? Is there a solution?
 
I'm a bit confused with the reading of my light sensor with legOS. I'm getting values with a lot of "noise"... For example, reading the value for white, I'm getting values with a "noise" from 36 to 24 (raw) around the right value. Reading some post (...) (25 years ago, 30-Mar-00, to lugnet.robotics.rcx.legos)
 
  The Mars Rover Lego should have built
 
See my model of the Mars Rover that Lego should have built. Added to my lego MOC page (URL) (25 years ago, 30-Mar-00, to lugnet.technic, lugnet.build, lugnet.robotics.rcx)  
 
  Modulo operator in NQC
 
I'm trying to use the modulo operator in NQC, but I get an error that it expects constants. I checked the docs and that indeed seems to be the case. While I'm sure there must be instances where one would use constants on both sides of the operator, (...) (25 years ago, 30-Mar-00, to lugnet.robotics.rcx.nqc)
 
  Installing LegOS -- compiler problems, SIGSEV
 
i'm attempting to compile the latest egcs-1.1.2 on my Linux roswell 2.2.12 #10 SMP Thu Nov 11 13:28:14 CST 1999 i586 unknown machine; however, I hit a rather odd problem when trying to compile the attached section of the makefile. I get a signal 11 (...) (25 years ago, 29-Mar-00, to lugnet.robotics.rcx.legos)
 
  Re: When the OS makes the difference
 
(...) path (...) 70cm/s (...) movie (...) one (...) rate. (...) pretty (...) line (...) not (...) sampling. (...) with (...) I guess you're right this time too :-) Thanks for having clarified the matter. (...) good (...) Paolo actually confessed he (...) (25 years ago, 28-Mar-00, to lugnet.robotics, lugnet.robotics.rcx.legos)
 
  Re: Moving Robolab project files
 
I have been moving Investigator projects without problems between three computers, two of which are Windows 98, and the other Windows 95. I have simply been copying the x.llb file from \ROBOLAB\Investigator Themes\My Projects to another computer (...) (25 years ago, 28-Mar-00, to lugnet.robotics.rcx.robolab)
 
  broken "b" port on RCX 1.0
 
ive had my mindstorms kit for a while but never have programmed with a computer....its been sitting in the closet for a while.....now when i have an inspiration to build something and take it out, i discover that the "b" port for the motor doesn't (...) (25 years ago, 28-Mar-00, to lugnet.robotics.rcx)
 
  RE: When the OS makes the difference
 
(...) <snip> (...) Alternative firmware is crucial to developing high-performance bots. The core sampling rate of the RCX firmware is once every 3 msec, which is pretty fast. I'm not sure of the max rate that legOS allows. At that rate, the line is (...) (25 years ago, 27-Mar-00, to lugnet.robotics, lugnet.robotics.rcx.legos)
 
  RE: When the OS makes the difference
 
(...) <snip> (...) Alternative firmware is crucial to developing high-performance bots. The core sampling rate of the RCX firmware is once every 3 msec, which is pretty fast. I'm not sure of the max rate that legOS allows. At that rate, the line is (...) (25 years ago, 27-Mar-00, to lugnet.robotics, lugnet.robotics.rcx.legos)
 
  Re: VB 6 subprocedure stumper
 
Hi Kathy, No, Sub 0 shouldn't interfere with Task 0. If you want, you could e-mail me the code and I'll take a look at it. David Leeper (...) here: (...) program (...) (25 years ago, 27-Mar-00, to lugnet.robotics.rcx)
 
  Re: printing on more than one page
 
The icons in Robolab have the program logic flow from left to right, with modifiers below each icon. This basic structure typically creates programs that are very wide, but not very long. If Robolab were changed so the icons would have program flow (...) (25 years ago, 27-Mar-00, to lugnet.robotics.rcx.robolab)  
 
  Re: NQC 2.1 r2 released
 
Oh yeah -- Dave, my packages contain a slightly updated version of the man page (version numbers in the examples have been updated). (25 years ago, 27-Mar-00, to lugnet.robotics.rcx.nqc)
 
  Re: NQC 2.1 r2 released
 
(...) Ok, Linux packages/binaries for 2.1 r2 are now available at (URL). I'm really busy at work right now, so this was done kinda in a hurry :) I'm pretty sure that there's no problems, but please let me know if I missed something. Thanks! (25 years ago, 27-Mar-00, to lugnet.robotics.rcx.nqc)  
 
  Re: VB 6 subprocedure stumper
 
David: Thanks for the tips - I really appreciate any pointers/help I can get. Actually, if I abandon the idea of subprocedures and move the code within my main task, it runs just fine. However, the whole idea of this "lesson" is to use subprocedures (...) (25 years ago, 27-Mar-00, to lugnet.robotics.rcx)
 
  When the OS makes the difference
 
Yesterday, Sunday 26th March, we had our 4th Italian Legofest. This time our traditional robotic contest was about line following, and 10 peopled compared their ideas, their knowledge and their ability running their robots for maximum speed on a 7m (...) (25 years ago, 27-Mar-00, to lugnet.robotics, lugnet.robotics.rcx.legos) ! 
 
  Re: VB 6 subprocedure stumper
 
Hi Kathy, My first question would be "What are the values of CHECK_LEFT and CHECK_RIGHT?" If they're the same, that would produce the behavior you're getting. I know I often make a mistake like that when I copy and paste a line of code. You also may (...) (25 years ago, 27-Mar-00, to lugnet.robotics.rcx)


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