 | | Re: rotation sensor mystery solved?
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(...) That's one of the reasons I got mine. I was trying to make a simple balancer when I built the pendulum I described (with 4.5 degree accuracy). There were a lot of problems with my mechanism, but the overriding problem was that the 0 point (...) (25 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: rotation sensor mystery solved?
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(...) which (...) I added code to assume that 2 step transitions were 2 steps in the last known direction of travel. The results were MUCH worse than just ignoring those steps, as the current code does. This seems to suggest that the 2-step (...) (25 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: rotation sensor mystery solved?
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(...) I got a letter two days ago indicating that the two rotation sensors I ordered the first week in January are nicely on backorder and will ship in a month or so. This is similar to what I was told on the phone when I ordered them from Shop and (...) (25 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: rotation sensor mystery solved?
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(...) I tried hacking something like this into the old rotation sensor code, and it didn't go real smoothly, but is definitely a necessity (I think) if you want the sensor to handle very, very high speed apps. (...) I am. I'm almost tempted to steal (...) (25 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: rotation sensor mystery solved?
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(...) What exactly do you intend here, Martin? I spent quite some time working on this over the summer and in the fall, and had a great deal of problems but also some success. I'd be happy to help you out with my experiences if you have some idea (...) (25 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: rotation sensor mystery solved?
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(...) It is very very interesting. I have worked the last weeks evenings to discover the fault in my concept, my modell and my Software. and I have discovered, that the fault can't be on my side. I discovered that my implementation of a fake (...) (25 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: rotation sensor mystery solved?
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(...) Hi Ben, i think that's very interesting work you're doing, especially because i'd like to build sophisticated balancing bots, and already got 2 rotation sensors from lego world shop for this reason. I'm currently not actively working on that, (...) (25 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: rotation sensor mystery solved?
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I put in some debug code to catch rotations which skip a state (transitions like 3->1 or 0->2) which the legOS table `diff2change' currently translates to 0 steps (because we can't be sure whether that was 2 steps forward or 2 steps back). These (...) (25 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: sending keepalive... ???
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Hi Rossz (...) Yes, I downloaded the legOS.srec on top of the existing Lego firmware and some programs. When you download the legOS firmware will anything currently in RAM be deleted? I'll try taking the batteries out for a while and starting again. (...) (25 years ago, 26-Jan-00, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | Bug in WinlegOS installer
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In my rush to get the package released I made "one more insignificant change". This resulted in a bad path setting being placed in the autoexec.bat file. At the end of the install skip rebooting and open autoexec.bat in the editor. The installer (...) (25 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos, lugnet.robotics.rcx)
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| | Re: more user questions
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Thanks, your directions worked perfectly. (...) Originally, the line appended to autoexec.bat was (something like): set path=set path=c:\LEGOS\H8\BIN...ath%%path% which I altered to: set path=c:\LEGOS\H8\BIN...BIN;%path% (25 years ago, 26-Jan-00, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | Re: rotation sensor mystery solved?
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(...) old (...) The version I posted works with all cable lengths and battery strengths I have access to. I just extended the range of each state a bit toward the low battery end of the scale. --Ben (25 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: more user questions
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A general note, there is a README.WRI file. This includes information beyond what Markus originally wrote in README. Perhaps I should have deleted his README (I include it in README.WRI, anyway). Open your copy of MAKEFILE. You'll find this line: (...) (25 years ago, 25-Jan-00, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | Re: sending keepalive... ???
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(...) If the readme file says the demo LX files are included, that is a mistake (or should I include them?). I'll have to correct it. As for your download problem, did you download the firmware first (firmdl3 legOS.srec)? LX files are relocatible (...) (25 years ago, 25-Jan-00, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | more user questions
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I too have had my problems with this system. Perhaps they come from my inexperience with LEGOS or UNIX, which doubtless is apparent in my description below: Downloading and installing went well. Then, after correcting a minor SET PATH syntax error (...) (25 years ago, 25-Jan-00, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | sending keepalive... ???
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Hi You go to all the hassle of making LegOS available for us Windows users and still we have questions. I'm really struggling and can not find anything in the docs or Lugnet to help (that I understand) and so I would really apreciate some help. I (...) (25 years ago, 25-Jan-00, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | Re: legOS for Windows
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Install ActivePerl ((URL) switch to the boot directory, and type MAKE. That's it. What you can't build with this package are the various command line tools (makelx.exe, firmdl3.exe, dll.exe), nor the cross compiler. Rossz (...) (25 years ago, 25-Jan-00, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | Re: rotation sensor mystery solved?
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(...) Will this version also work with fresh batteries and short cable, or do we have to change tables depending on the battery state ? (25 years ago, 25-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: Trying to understand dynamic loading
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(...) AFAIK, Markus is currently writing a new O'Reilly book about Mindstorms systems, which will cover legOS quite detailed. I also guess there will arise some up-to-date online documentation from this project. - Martin (25 years ago, 25-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: rotation sensor mystery solved?
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(...) When I wrote my original post I was afraid that major surgery was going to be required to fix this. The values with an extension wire are actually shifted into formerly invalid slots which are contiguous with the existing state groups. So the (...) (25 years ago, 25-Jan-00, to lugnet.robotics.rcx.legos)
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| | rotation sensor mystery solved?
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I was getting very erratic readings from a rotation sensor (if I put a pendulum on it and moved it back and forth the 0 position would wander all over the place). I started looking at the raw values from the sensor and comparing them with what the (...) (25 years ago, 25-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: Trying to understand dynamic loading
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Thank you all for the help. Now I can see things much better! Now that the Windows version finally works, I will be able to experiment a little... A thought: IMHO, one of the things that should be very high on the "to do" list is documenting legOS. (...) (25 years ago, 25-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: legOS for Windows
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(...) Yes, I tested it and it worked on my Win98! Great work!! Thanks! (...) Do you mean that the kernel can be rebuild on Windows? Which parts/utilities cannot be rebuilt? best regards, Vlad (25 years ago, 25-Jan-00, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | legOS for Windows
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For those of you overwhelmed by the work involved to get a viable legOS developement system on the Windows OS, legOS for Windows is now available. If you only wish to write dynamic downloadable programs for the RCX, this package is all you need. If (...) (25 years ago, 24-Jan-00, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | Re: legOS for Windows Finished!
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(URL) I haven't tested it myself, but WinlegOS 0.2.3 is now online. Many thanks are clearly due to Rossz for making this happen. If someone wants to volunteer to write up a quick description of it's use, let me know, and I'll post that along with (...) (25 years ago, 24-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: Trying to understand dynamic loading
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(...) You can't run multiple downloaded programs at once, but you can have several programs installed and pick which one to run. Each program can have many threads. (...) Yes, the compiled files depend on the reloc information for the kernel. (...) (...) (25 years ago, 24-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: Trying to understand dynamic loading
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(...) i'm surely not the definitive person to answer this questions, so don't take the follwowing 100%'ly: Yes there is a loader. It's activated whenever a certain kind of packet arrives on LNP addressing port 0. The loading of the program requires (...) (25 years ago, 24-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: Trying to understand dynamic loading
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(...) Yes (...) Yes (...) I have not tried it and the downloader task seams to be disabled while a program is running. I'll hope, i can find time to read the source :) (...) Aehhhhh yes, maybe, i think so. .) (...) Yes Greetings Carsten ps: (...) (25 years ago, 24-Jan-00, to lugnet.robotics.rcx.legos)
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| | Trying to understand dynamic loading
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Hi! Could anyone please explain a little how the dynamic loading facility works in legOS? I don't seem to get at full grip on it... and I can't test it either, right now... Is there a loader on the RCX? Can apps be downloaded to the RCX whithout (...) (25 years ago, 24-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: legOS for Windows Finished!
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(...) Tomorrow is a bad day, but expect it to be up and announced by midnight (EST) at the latest. -Luis ###...### Profanity is the one language that all programmers understand. -Anonymous ###...### (25 years ago, 24-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: legOS for Windows Finished!
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mike mcfarlane <mcfarlane_mike@hotmail.com> wrote in message news:Fot34E.JA4@lugnet.com... (...) I'll send it off to arthurdent on Monday morning. When Luis has the time, he'll make it available and (hopefully) let everyone here know of its (...) (25 years ago, 24-Jan-00, to lugnet.robotics.rcx.legos)
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| | pity yet another newbie ??
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Hi All After my previous post saying how I was looking forward to a 'designed for 95/98whatever' I had a touch of guilt and want to learn. I followed the instructions on: (URL) appeared to be the most detailed. I believe I managed to compile (...) (25 years ago, 23-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: legOS for Windows Finished!
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Oh, I wish I had been a good boy at school and learned my Unix like I should have! Instead I fell for the lure of Win and an 'easy life' ¦-? I started trying to install LegOS today and am so far failing miserably, so you guys huge effort is like (...) (25 years ago, 23-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: legOS for Windows Finished!
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(...) I'll put whatever you guys want on arthurdent, which appears to be the closest thing we have to a "community" ftp/web server. I'll also be getting my own domain name soon, and so everything will be moved to that so that there will be (...) (25 years ago, 23-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: legOS for Windows Finished!
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(...) I will send them to you via E-Mail. I've patched and tested them both and recently posted the diffs file on lugnet.robotics.rcx.legos, but I have not received any feedback (for firmdl3) at all. :-( I've also wrote to Peter Van Beken and kekoa (...) (25 years ago, 23-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: Mindstorm firmware C compiler for W95 platform ready for download.
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Sorry Mario but seem that somebody have published some Lego Camera into lego minstorms site... -- ___...___ Ferrara Francesco Mario Ferrari <mario.ferrari@edis.it> wrote in message news:Fop2Mt.K2x@lugnet.com... (...) then (...) offen (...) files (...) (25 years ago, 23-Jan-00, to lugnet.robotics.rcx.legos, lugnet.robotics)
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| | legOS for Windows Finished!
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Ok, I lied. I am missing one essential component. I absolutely need a copy of DLL.EXE that runs under Windows. I could also use a compiled copy of the latest version FIRMDL.EXE (I only have version 1). So far my tests are very encouraging. After (...) (25 years ago, 22-Jan-00, to lugnet.robotics.rcx.legos)
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| | legOS for Windows
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I have nearly completed putting together all the pieces for a development environment that runs natively under Windows. As deployed, it won't be able to rebuild the utility programs such as makelx.exe or the cross-compiler programs. This would (...) (25 years ago, 21-Jan-00, to lugnet.robotics.rcx.legos)
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| | No need for makedepend.exe
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On one of my computers makedepend.exe refuses to work, though my other system doesn't have a problem (both are Win95). While researching the problem I ran across a discussion on GCC showing how to create dependency lists automatically. I plugged in (...) (25 years ago, 21-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: Mindstorm firmware C compiler for W95 platform ready for download.
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Søren Hilmer <sh@itplus.dk> wrote in message: (...) Søren's right, the problem comes from Netscape that downloads the .rar files as text. Now Francesco has updated his page with a zipped version of his files and hope anybody can safely download (...) (25 years ago, 21-Jan-00, to lugnet.robotics.rcx.legos, lugnet.robotics)
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