 | | Re: problem with lnpd...help!?
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(...) That's wrong. You should write "char test4 = 'a';", otherwise you are implicitly casting the character 'a' to a pointer to store it in test4 (the compiler should warn you about this; use -Wall to catch these errors). (...) Then this line (...) (23 years ago, 15-Mar-02, to lugnet.robotics.rcx.legos)
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| |
| | Re: problem with lnpd...help!?
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|
This is really more of a general C question than an lnpd question. Anyway, the problem is with serialization; you want to take a structure in memory, and turn it into a stream of bytes, either to store in a file, send over a network, or whatever. (...) (23 years ago, 15-Mar-02, to lugnet.robotics.rcx.legos)
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| | problem with lnpd...help!?
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|
hi all. im using legOS 0.2.4 and using lnpd to communicate with my linux box. now then, here is my problem. lets imagine i have the following: foo{ int test; char *test2; void *test3; }; char *test4 = 'a'; char *test5 = 'b'; struct foo bar* = NULL; (...) (23 years ago, 15-Mar-02, to lugnet.robotics.rcx.legos)
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| | Spectrum as source of Technic Spares
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With all of the back and forth lately on the lack of Technic spares, I've found that Spectrum Educational Supplies in Aurora Ontario has many hard-to-get parts, including the little pneumatic pumps. Without keeping everyone in suspense... Specturm (...) (23 years ago, 15-Mar-02, to lugnet.technic, lugnet.robotics.rcx)
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| | Re: legOS not working with external relay switches
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|
quite possibly. I havn't hooked up a scope, but it seems to be as close to full power as possible....interesting "Max Bowsher" <maxb@ukf.net> wrote in message news:006401c1c9ec$bd...ibm.com... (...) power (...) otherwise (...) (23 years ago, 13-Mar-02, to lugnet.robotics.rcx.legos)
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| | Re: legOS not working with external relay switches
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I think I remember hearing that legOS full power is actually about 99% power ??? Something to do with an optimization to the code, which would otherwise require special handling ??? This is a vague memory - can others confirm ??? Max. ----- Original (...) (23 years ago, 12-Mar-02, to lugnet.robotics.rcx.legos)
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| | Re: Linux driver for USB Tower
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|
A better link would be (URL) you have to find the link for the Project Home Page (under Public Areas). Ed P.S. I am not involved either! Rainer Balzerowski <balze2@gmx.net> wrote in message news:Gpn9Lo.6E@lugnet.com... (...) (23 years ago, 11-Mar-01, to lugnet.robotics.rcx.legos)
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| | Re: Reading exceptions
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(...) The 0078 is the method signature number of the method where the exception was thrown. The 8, is the least significant figure of the number referring to the exception class thrown. To get further information, you must add the -verbose option to (...) (23 years ago, 12-Mar-02, to lugnet.robotics.rcx.java)
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| | Book on Programming the RCX with Java
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|
If anyone would like more information on the new book "Core Lego Mindstorms Programming" check out my announcement on Lugnet: (URL) (23 years ago, 12-Mar-02, to lugnet.robotics.rcx, lugnet.robotics.rcx.java)
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| | Re: legOS not working with external relay switches
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|
three 2200uf capacitors fixed the problem but does anyone know why the difference between legOS and the standard firmware?? "Kingsley Gifford" <kgifford@thezone.net> wrote in message news:3C8BDD44.809080...one.net... (...) (23 years ago, 11-Mar-02, to lugnet.robotics.rcx.legos)
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| |
| | Re: Fw: exponents, e^
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|
legOS isnt hard to setup on windows, but i think lejos is an easier environment to setup/use, especially for users who have no cygwin/unix experience.... (...) (23 years ago, 11-Mar-02, to lugnet.robotics.rcx.legos)
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| | Reading exceptions
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Hello, I've recently started working with lejOS and was having some dificulty with my code. When ever I get an exception, there is a buzz, the arrow under the 2 lights up, and a number like "0078 8" shows up. I was wondering how I read this number (...) (23 years ago, 11-Mar-02, to lugnet.robotics.rcx.java)
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| | legOS not working with external relay switches
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I'm in the process of "reviving" past inventions with my new knowledge of legOS. One such invention (if you can call it that) used 3 12V relay switches to control external circuits. Full power on the outputs would trigger the relays. however, under (...) (23 years ago, 10-Mar-02, to lugnet.robotics.rcx.legos)
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| |
| | New version of NQCEdit
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|
Version 1.6 of NQCEdit is now released. This program is a front-end IDE for the NQC command line compiler that offers syntax coloring. NQCEdit is able to do most of the things that NQC is capable of: - Compile program for all targets - Download (...) (23 years ago, 10-Mar-02, to lugnet.robotics.rcx.nqc)
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| |
| | RE: Psion 5mx and pbForth
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|
(...) Way to go Ian! I'm moving along in my attempts to get the USB tower working with pbForth. The USB tower uses ODD parity, and that cannot be changed. Sooo, to all the other environment writers out there, be aware that the next version of (...) (23 years ago, 10-Mar-02, to lugnet.robotics.rcx.pbforth)
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| |
| | Re: RCX as a PGP engine
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(...) They don't, but they need bignums (really big integers). (...) the API is in java.math.BigInteger . (...) You could just run PPP over it I suppose, with some encryption (IPSec?) on top of it. Would be dead slow, though. The charm of the RCX (...) (23 years ago, 10-Mar-02, to lugnet.robotics.rcx.legos, lugnet.robotics.rcx.java)
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| |
| | Re: Is the program running?
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|
"Barney Hilken" <barneyhilken@mac.com> wrote in message news:Gsq8J6.Ds9@lugnet.com... (...) There is no direct way to interrogate the RCX with standard firmware. However, it could be simply handled programmatically. Use a global variable to set a (...) (23 years ago, 10-Mar-02, to lugnet.robotics.rcx)
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| |
| | Fw: exponents, e^
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By all means use lejOS, but don't think that legOS is hard to get working on Windows. Max. ----- Original Message ----- From: "David Dubravetz" <david_dubravetz@hotmail.com> To: <lugnet.robotics.rcx...ugnet.com> Sent: Thursday, March 07, 2002 4:57 (...) (23 years ago, 9-Mar-02, to lugnet.robotics.rcx.legos)
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| | Is the program running?
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Does anyone know how to poll the RCX (with standard firmware 2.0) to find out whether a program has terminated yet? If you can see the LCD, you can see whether the little man is still moving, but can you check this from a host computer? The (...) (23 years ago, 9-Mar-02, to lugnet.robotics.rcx)
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| | 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: 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: Deleting Programs
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|
(...) If you mean wiping the firmware, press ON and Prgm at the same time. If you want to delete individual programs, I've cooked up a little C code (on the PC side) to do that. It requires liblnp and lnpd. If you want, I'll post it or e-mail it to (...) (23 years ago, 9-Mar-02, to lugnet.robotics.rcx)
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| |
| | Re: Makefile command to make *.map files
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|
I had a similar problem with the "sort" program apparently not functioning and then someone kindly looked at my error output and pointed out that I should make sure that the CYGWIN bin path was added to the FRONT of my path as declared in my (...) (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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|
(...) Even if it needed FP, legOS supports that. (...) Well, maybe. Maybe not. legOS has a random() function, right? Once the TCP/IP patch is stable, why not use an RCX as an echo server with built in en/decryption? You could just telnet to it, type (...) (23 years ago, 9-Mar-02, to lugnet.robotics.rcx.legos)
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| |
| | Re: BricxCC release 3.3.4.2
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(...) First, you are doing a great job! The support for pbForth is a good idea. And there is only one thing to make BricxCC better, if someone port it to Linux. Best Regards Joerg (23 years ago, 8-Mar-02, to lugnet.robotics.rcx)
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| |
| | Re: Attention cygwin and windows users
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Quoting Ed Manlove (emanlove@ieee.org): (...) If we actually get to the point of doing another release (and thus finding a maintainer for the project, etc) maybe this is something we should consider integrating? Anyone else building on Cygwin and (...) (23 years ago, 8-Mar-02, to lugnet.robotics.rcx.legos)
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| | Attention cygwin and windows users
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|
For those using the cygwin tools under a windows OS as described in the article "LegOS 0.2.4 - Instructions for installing on NT/Win9x with Cygwin" you could be experiencing a conflict with dos and cygwin tools. In particular is you are following (...) (23 years ago, 8-Mar-02, to lugnet.robotics.rcx.legos)
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| |
| | Re: Compile error when make demos
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|
Zhengrong, I know this is an old post but what was your setup for this build (OS,cygwin?, etc)? Ed (...) (23 years ago, 8-Mar-02, to lugnet.robotics.rcx.legos)
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| |
| | Re: Makefile command to make *.map files
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|
For clarity I am running under Win98 using CYGWIN tools as outlined by the instructions "LegOS0.2.4 - Instructions for installing on NT/Win9x with Cygwin". I was looking for help on the sort command using $sort --help but I was getting a similar (...) (23 years ago, 8-Mar-02, to lugnet.robotics.rcx.legos)
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| | Re: Makefile command to make *.map files
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|
Quoting Ed Manlove (emanlove@ieee.org): (...) I can't speak for absolute certain about this, not being familiar with that part of the code, but sort -u is used to unique a list of strings. That is, if you pipe a file: spam spam spam eggs through (...) (23 years ago, 8-Mar-02, to lugnet.robotics.rcx.legos)
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| | Makefile command to make *.map files
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|
What is the sort command doing in the command to create *.map files within the Makefile.kernal? # how to make map files %.map: %.coff $(NM) $*.coff | sort -u > $*.map Doing my build I get the following error and the resulting map file has size zero. (...) (23 years ago, 8-Mar-02, to lugnet.robotics.rcx.legos)
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| |
| | BricxCC release 3.3.4.2
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|
I've just released a new version of BricxCC. This release add support for downloading non-standard firmwares (such as pbForth). I've also added support for several languages other than NQC with user customizable syntax highlighting. These languages (...) (23 years ago, 7-Mar-02, to lugnet.robotics.rcx)
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| |
| | Re: binutils?
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(...) It has several useful things in it, but the one most important for legOS is probably the linker, ld. ROSCO (23 years ago, 7-Mar-02, to lugnet.robotics.rcx.legos)
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| | binutils?
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|
when i first got legOS up and running i used rcx-egcs-1.1.2-1.i386 rcx-egcs-c++-1.1.2-1.i386 rcx-binutils-2.9.5.0.22-1.i386 i'm assuming the first two are the c and c++ compilers, however what is the function of the binutils? thanks (23 years ago, 7-Mar-02, to lugnet.robotics.rcx.legos)
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| | backing up programs
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|
Hi, I have a couple of RCX's and was wondering if anyone has done any work on a way to transfer a program from one rcx to another in the case of a battery failure, etc. instead of replacing the rcx in the robot with the other one. thanks (23 years ago, 7-Mar-02, to lugnet.robotics.rcx.legos)
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| |
| | Re: exponents, e^
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|
i tried the lejos environment and found the exponent and trig functions worked very well. and they work with doubles. so if anyone is having trouble with using trig, log, exp functions in legOS, you might want to try lejos. plus it was easier to (...) (23 years ago, 7-Mar-02, to lugnet.robotics.rcx.legos)
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| | Re: exponents, e^
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(...) Only one I can think of off-hand is support for the remote control, I've been thinking about looking at that if I can get some time (though it's still only a patch in legOS, have to do something about that, too). There may be others I don't (...) (23 years ago, 6-Mar-02, to lugnet.robotics.rcx.legos)
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| |
| | Re: LeJos threads / sleep() takes too long
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|
Hi Bart, (...) if you mean LISTENER_THREAD then that sounds plausible. (...) Yes, LISTENER_THREAD has maximum priority, so it runs before any threads of lower priority, even yield doesn't help. (...) Yes, I think we'll have to fix that somehow. (...) (23 years ago, 6-Mar-02, to lugnet.robotics.rcx.java)
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| |
| | Re: ForthPad v0.9
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|
I'm re-posting this message at the lugnet.robotics.rcx level in case anyone missed it. I've put together a stand-alone application which I am calling ForthPad. It is a Windows executable which should run on any version of Windows from 95 on up. It (...) (23 years ago, 6-Mar-02, to lugnet.robotics.rcx)
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| | Re: ForthPad v0.9
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|
(...) The firmware downloader built into BricxCC is a port of Dave Baum's NQC code to Delphi. It calculates the checksum up to a length of 0x4C00. The limit of 0xCC00 is based on the sum of length + start (where start is = 0x800). John Hansen (23 years ago, 6-Mar-02, to lugnet.robotics.rcx.pbforth)
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| | Re: exponents, e^
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|
you know i was looking at lejos, java for RCX, and it seems to have exponents, trig, etc. functions built in. any advantages legOS has over lejos i don't know about. if not, i think i may give it a whirl.... -dave (...) (23 years ago, 6-Mar-02, to lugnet.robotics.rcx.legos)
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| | RE: ForthPad v0.9
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(...) Thanks John, I'll try this soon. You may want to post this to the next level higher to let other non-pbForthers see what you are up to. Does your alternative firmware loader take into account the limit at 0xCC00? If the replacement firmware (...) (23 years ago, 6-Mar-02, to lugnet.robotics.rcx.pbforth)
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| |
| | Re: exponents, e^
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|
Dave I am working on a number of maths functions that includes loge log10 expe and exp10 x^y as well as trig functions. As you note it requires the specification of the mantassa and exponent desciption of the float variable for the RCX. Usually this (...) (23 years ago, 6-Mar-02, to lugnet.robotics.rcx.legos)
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| |
| | LeJos threads / sleep() takes too long
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|
Experimenting with Lejos, two 'major' problems: memory (cleaning up platform & lang: Math.class is huge!) and... threads. I have the impression my "try { sleep(nnn) }" takes a somewhat arbitrary time. It's 'at least' nnn milisec, but often much (...) (23 years ago, 6-Mar-02, to lugnet.robotics.rcx.java)
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| | exponents, e^
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|
hello, i've searched through the discussions but i haven't been able to find any info on using floats with exponents in legOS, specifically the inverse of natural log: e^. actually, i can't find any info about integers with exponents either. i am (...) (23 years ago, 6-Mar-02, to lugnet.robotics.rcx.legos)
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| |
| | Re: ForthPad v0.9
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|
As an aside, I think it might be a straightforward matter to make emacs communicate with the RCX (or intermediary) and then you've got a full blown editor to work with (ie, there are already forth highlighting modes). (23 years ago, 6-Mar-02, to lugnet.robotics.rcx.pbforth)
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| |
| | ForthPad v0.9
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|
I've put together a stand-alone application which I am calling ForthPad. It is a Windows executable which should run on any version of Windows from 95 on up. It is a simple Forth editor that performs user-configurable syntax highlighting. Users of (...) (23 years ago, 5-Mar-02, to lugnet.robotics.rcx.pbforth)
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| |
| | RE: Palm and pbForth
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|
(...) Yes, this is very easy to do. I'd have to change the GUI I supply too, but that would not be too bad... (...) It's not pbForth that's the problem, it's the host-side software that I need to update to use the USB tower. (...) The RCX does not (...) (23 years ago, 5-Mar-02, to lugnet.robotics.rcx.pbforth)
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| |
| | Re: Palm and pbForth
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|
(...) If you changed pbForth to use 2400,o,8,1 instead of 2400,n,8,1 wouldn't that make it work with the USB tower? It seems to me like that is what the standard Lego firmware expects from either tower. That appears to be how it works under Windows, (...) (23 years ago, 5-Mar-02, to lugnet.robotics.rcx.pbforth)
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| |
| | RE: Palm and pbForth
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|
(...) Well, for starters, the RCX uses a different modulation scheme on the IR port, but these guys have a C solution... (URL) You'll need a Palm SDK and some patience. Is there any or some interest in getting this for the Palm? I'm having trouble (...) (23 years ago, 5-Mar-02, to lugnet.robotics.rcx.pbforth)
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| |
| | Palm and pbForth
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|
Hi all, i'm interested in using a Sony Clie N770 (Palm OS 4.1) to program my RCX (RIS 1.5). I ran across pbForth in the book "The Unofficial Guide to Lego Mindstorms" by Jonathan B. Knudsen. I downloaded pbForth.srec (version 11/11/2001 22:08) from (...) (23 years ago, 5-Mar-02, to lugnet.robotics.rcx.pbforth)
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| |
| | RE: h8/300 16-bit multiply
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|
(...) <snipped code...> Are you sure that it works for signed numbers :-) (...) If you like, I can give you some notes on how my Forth was developed. I'm using a simple pseudo-assembler that lets me port this Forth to a new processor in less than a (...) (23 years ago, 4-Mar-02, to lugnet.robotics.rcx)
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| |
| | Re: h8/300 16-bit multiply
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|
Thanks. I have a version just 2 words longer that doesn't use the ROM code. Basically it's the ROM's code, trimmed down after assuming high words are zero initially. It's completely untested though, so there may be a bug. CODE UM* \ 16x16=32 (...) (23 years ago, 4-Mar-02, to lugnet.robotics.rcx)
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| |
| | RE: rotation sensors
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|
(...) Yes, you need to read the rotation sensor continuously. Be careful to not read it TOO quickly, especially if the sensor is turning slowly or you get the jumpy count problem. There is a fix for it and I might add it too the rotation sensor code (...) (23 years ago, 4-Mar-02, to lugnet.robotics.rcx.pbforth)
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| |
| | RE: problems with communications
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|
(...) Keep digging. Try using a PC first and get that working. (...) Yep. (...) Sounds like pbForth is picking up steam again. Good. It's emails like this that keep me motivated to keep development going. I'm just back from a vacation, so I'll do (...) (23 years ago, 4-Mar-02, to lugnet.robotics.rcx.pbforth)
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| |
| | RE: h8/300 16-bit multiply
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|
(...) The easiest thing is to cast your 16 bit values to 32 bits and use the built-in 32x32 multiply... Here's the code from pbForth that does it. (It's written in a pseudo- assebler, but you can probably figure it out...) #---...--- # UM* UM* ( u1 (...) (23 years ago, 4-Mar-02, to lugnet.robotics.rcx)
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| |
| | RE: Support for pbForth in BricxCC
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|
(...) John, This is great news! My own Tcl based GUI is a bit lacking, and a grand unified firmware uploader sounds like a great idea. I've been away on holidays and conferences most of the month, so I've missed most of this thread. Quick question, (...) (23 years ago, 4-Mar-02, to lugnet.robotics.rcx.pbforth)
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| |
| | Re: Support for pbForth in BricxCC
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|
(...) I wrote a hack to dump all the words, and here's the result for version 2.0.0. The word list has changed since 1999. I think the list is complete, but no guarantees. ?DUP 2SWAP 2OVER 2DROP 2DUP RSHIFT DLShift LSHIFT MOD / * */ SM/REM /MOD (...) (23 years ago, 4-Mar-02, to lugnet.robotics.rcx.pbforth)
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| |
| | Re: Support for pbForth in BricxCC
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|
(...) My plan is to simply have the editor syntax highlight the built-in words in various (configurable) ways. Comments, for instance, () and \ would be highlighter in a certain way. Numbers in another. Standard Forth words that are not simple (...) (23 years ago, 3-Mar-02, to lugnet.robotics.rcx.pbforth)
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| | Re: Support for pbForth in BricxCC
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|
(...) I'm also playing with interfaces to pbforth at the moment. What you're doing and I'm not is syntax highlighting. I'm not actually sure how well that works in pbforth, since I'm not sure how the editor knows which words have been defined (...) (23 years ago, 3-Mar-02, to lugnet.robotics.rcx.pbforth)
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| | rotation sensors
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|
Do I have to manually frequently read the values from rotation sensors for the count to work, or does the firmware monitor the sensor for me? I have home-brew passive sensors, touch sensors and light sensors working fine, but the rotation sensor is (...) (23 years ago, 3-Mar-02, to lugnet.robotics.rcx.pbforth)
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| |
| | Support for pbForth in BricxCC
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|
I've started a project recently related to pbForth. And I'm interested in some community feedback. Last night I wrote a preliminary pbForth syntax highlighter for the editor component I use in BricxCC. And I modified BricxCC slightly so that you can (...) (23 years ago, 3-Mar-02, to lugnet.robotics.rcx.pbforth)
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| |
| | new EmuLegOS release 1.2.5.0
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|
I just posted a new release of EmuLegOS, if you're interested you can grab it from (URL) of the changes were just adding support for additional sensor types. Here is the changelog. 1.2.5.0 03/02/02 Mark Falco - added include for semaphore.h so user (...) (23 years ago, 2-Mar-02, to lugnet.robotics.rcx.legos)
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| |
| | Re: pbrick.dll
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|
(...) spirit.ocx (...) as for the spirit.ocx? (...) comes in the (...) Hi, I don't know about pbrick.dll, but Lego finally made the RIS2 SDK available. Besides a linkable API dll ("Ghost") it also contains a COM server with functionality similar to (...) (23 years ago, 1-Mar-02, to lugnet.robotics.rcx)
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| |
| | Re: reliability of quad speed LNP
|
|
(...) Probably depends on the make-up of the data you're transferring. ROSCO (23 years ago, 28-Feb-02, to lugnet.robotics.rcx.legos)
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| |
| | Re: reliability of quad speed LNP
|
|
So with inverting every other message byte were you able to work at 4x? Were you then also able to work at close range at 4x? It would seem easy to patch LNP to automatically do this inversion. I'll have to give this a try. thanks, mark (23 years ago, 28-Feb-02, to lugnet.robotics.rcx.legos)
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| |
| | Re: RFC: Creation of Version 0.2.6
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|
(...) We asked our lawyers about this many months ago, when the whole issue first came up. It's okay with them if the name "legOS" is used in a "formerly known as" context. Just like what you describe, basically - to make sure people understand that (...) (23 years ago, 27-Feb-02, to lugnet.robotics.rcx.legos)
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| |
| | h8/300 16-bit multiply
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|
I'm trying to implement a 16bit multiply that leaves a 32bit result on the H8/300. The RCX ROM includes 16x16=16 and 32x32=32 multiplication routines, but not the intermediate step. Any hints or pointers? (it should be straightforward, but my eyes (...) (23 years ago, 27-Feb-02, to lugnet.robotics.rcx)
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| | pbrick.dll
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|
Hi everyone, I found this replacement controller of the spirit.ocx Does anyone know if there is any documentation for pbrick.dll?Or is it the same as for the spirit.ocx? Another question:Does the pbrick.dll support the USB tower that comes in the (...) (23 years ago, 27-Feb-02, to lugnet.robotics.rcx)
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| |
| | Re: Power to RCX
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Hi every one, Thanks for all your help on my previous inquiery. My other idea is, to power my newly acquired Scout with a Solar panel. The Solar panel (car battery saver) is 12V at ~70mA; which I intend to connect a Voltage converter (ready made (...) (23 years ago, 27-Feb-02, to lugnet.robotics.rcx)
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| | Re: reliability of quad speed LNP
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"Mark Falco" <falcom@onebox.com> wrote in message news:Gs44C0.MGL@lugnet.com... (...) <<snip>> I'm not familiar with LNP but I have also experienced similar messaging problems. I have an old RCX 1.0 (S/N 22751) with serial tower and a newer RCX 2.0 (...) (23 years ago, 27-Feb-02, to lugnet.robotics.rcx.legos)
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| | Re: Communication between 2 Robots - Movement transmition
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I did something simple in my book where each robot had an angle sensor, and could copy each other's 1D movement. Some grad students at Tufts did the same thing with 2 angle sensors on each robot and 2D movement. Both projects also then expanded to (...) (23 years ago, 27-Feb-02, to lugnet.robotics.rcx.java)
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| | Re: BricxCC release 3.3.3.8
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(...) It looks like the "slowness on shutdown" that I was experiencing when I closed BricxCC while multiple editor windows were open was causing access violations on your machine. What was happening was the code explorer would kick off a thread to (...) (23 years ago, 26-Feb-02, to lugnet.robotics.rcx.nqc)
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| | Re: Java Mindstorms API
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Hi Keith, (...) on the site I saw: To build an equivalent system for on-board ML programming of the RCX using the Lejos operating system Great project, finally there will be a decent programming language for the RCX ;-) Should better get going with (...) (23 years ago, 26-Feb-02, to lugnet.robotics.rcx.java, lugnet.robotics.rcx)
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| | Re: reliability of quad speed LNP
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I have found that between a rather old PC and a RCX I cannot use quad speed transfer of data as the RCX cannot keep up. When a different (faster) PC and the same RCX I can use quad speed transfer. I guess it comes down to protocol timing. LNP does (...) (23 years ago, 26-Feb-02, to lugnet.robotics.rcx.legos)
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| | Re: BricxCC release 3.3.3.8
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hi John, getting the latest video driver (Geforce 2MX, driver DetonatorXP v23.11) didn't help :-(, but .... you're new version 3.3.3.9 DID help :-) So thanks again ! I can't see any relevant changes from your "enhancements" list, but maybe you (...) (23 years ago, 26-Feb-02, to lugnet.robotics.rcx.nqc)
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| | reliability of quad speed LNP
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Does anyone have any data on the reliability of quad speed LNP? I've been using quad speed LNP for downloading programs to my 1.0 RCX for some time, and never had a problem. Recently I'd bowored a friends 1.0 RCX so that my bot could have two RCXs. (...) (23 years ago, 25-Feb-02, to lugnet.robotics.rcx.legos)
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| | BricxCC release 3.3.3.9
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I've released another version of BricxCC (3.3.3.9). In this release: 1) Fixes to Cybermaster-specific items on the Watch window and graph 2) Fixed slow shutdown caused by Code Explorer 3) Added hints on Code Explorer preferences dialog to help (...) (23 years ago, 25-Feb-02, to lugnet.robotics.rcx.nqc)
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| | Re: problems with communications
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(...) Dear oh dear. Probably because I'm being dense. (...) And the obvious answer - if it's software handshaking I should be able to see it with software. Having written a program to feed the serial port arbitary bytes and capture and log arbitary (...) (23 years ago, 25-Feb-02, to lugnet.robotics.rcx.pbforth)
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| | problems with communications
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I'm trying to get started with pbforth, but not finding it easy. While I know no forth, I'm happy with RPN (long-time HP calculator user) and stacks, dictionaries and defining words (ex-Postscript programmer). What I'm struggling with is getting as (...) (23 years ago, 25-Feb-02, to lugnet.robotics.rcx.pbforth)
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| | Java Mindstorms API
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Hi all, I'm a 4th year computer science student and have just developed an add on to the RCXPort API for mindstorms control for the purpose of using with standard ML as part of my 4th year project. The website is www.dcs.ed.ac.uk/~kv...oject.html (...) (23 years ago, 25-Feb-02, to lugnet.robotics.rcx.java, lugnet.robotics.rcx)
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| | Re: RCX as a PGP engine
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(...) IIRC, the algorithm doesn't need floating point ops, only very very large primes. (...) yah - I don't think the RCX will have a good generator of random numbers. cool idea, I'd be interested to see if it works :) Dan (23 years ago, 24-Feb-02, to lugnet.robotics.rcx.legos)
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| | Re: RCX as a PGP engine
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Looked at some of the source code involved. Have a look at the "Gnu Privacy Guard" variant's source at: (URL) I was just thinking, would the RCX be able to implement a PGP or RSA (...) I don't think there is enough room for the WHOLE PGP package in (...) (23 years ago, 23-Feb-02, to lugnet.robotics.rcx.legos)
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| | RCX as a PGP engine
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So I'm a bit behind on my reading list and I'm finally working through Steven Levy's fascinating book "Crypto" on the history and development of Public Key Incription and such. Great stuff. I was just thinking, would the RCX be able to implement a (...) (23 years ago, 23-Feb-02, to lugnet.robotics.rcx.legos)
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| | Re: Communication between 2 Robots - Movement transmition
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Hi Vasilis and Jürgen, I think it can be done with only 1 thread in each. In my Java line follower, the main loop reads the light sensors (I use 2) and issues commands to the two motors. It should be possible to encode the commands into a byte and (...) (23 years ago, 23-Feb-02, to lugnet.robotics.rcx.java)
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| | Re: BricxCC release 3.3.3.8
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(...) I'm afraid this may have something to do with Win98 and ImageLists. It sounds like it might be a video driver bug as well. Make sure you have the very latest driver for your video card. I'm debating about going back to using bitmaps rather (...) (23 years ago, 22-Feb-02, to lugnet.robotics.rcx.nqc)
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| | Re: Communication between 2 Robots - Movement transmition
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Hi Vasilis, (...) I think the easiest is to pretend that the same type of communication that you want to have with the slave also goes on within the master. So you need (at least) two threads, one that looks at the line and one that does the (...) (23 years ago, 22-Feb-02, to lugnet.robotics.rcx.java)
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| | Re: BricxCC release 3.3.3.8
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hi John, >>To day I had an even stranger experiences: > 5. Use Explorer to search your computer for *.dsk files and delete any that > are obviously NQC-related (they will have the same file name as your .NQC > files except with the .DSK extension). (...) (23 years ago, 21-Feb-02, to lugnet.robotics.rcx.nqc)
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| | Re: BricxCC release 3.3.3.8
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(...) Try this. 1. Delete the BricxCC key from the Registry (HKCU/Software/BricxCC). 2. Run BricxCC and bring up the Preferences dialog. 3. Make sure the "Autosave Options/Project Desktop" checkbox is NOT checked. 4. Close BricxCC. 5. Use Explorer (...) (23 years ago, 21-Feb-02, to lugnet.robotics.rcx.nqc)
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| | Communication between 2 Robots - Movement transmition
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Hi! I am a new member of your community, and i would like to ask the following question. Please excuse me if something similar has been already posted in the past, but i performed a seach in the previous posts and i did not found any answer to my (...) (23 years ago, 21-Feb-02, to lugnet.robotics.rcx.nqc)
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| | Communication between 2 Robots - Movement transmition
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Hi! I am a new member of your community, and i would like to ask the following question. Please excuse me if something similar has been already posted in the past, but i performed a seach in the previous posts and i did not found any answer to my (...) (23 years ago, 21-Feb-02, to lugnet.robotics.rcx.java)
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| | Re: maximum number of variables in RCX2 ?
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(...) Lego's usage of the terms'local' and 'global' is a little different than what most people expect. In the RCX, global storage is available across all tasks while local storage is avaialble per task. This is different from the more traditional (...) (23 years ago, 21-Feb-02, to lugnet.robotics.rcx.nqc)
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| | Re: problems using firmdl3 and dll on Red Hat 6.2
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(...) The proper way to manage the /etc/rc.d scripts with RedHat at least is chkconfig. So the proper command (as root) after moving the link back from /unused would be: chkconfig --level 0123456 gpm off More info is at the man page for chkconfig. (...) (23 years ago, 20-Feb-02, to lugnet.robotics.rcx.legos)
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| | Re: maximum number of variables in RCX2 ?
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(...) Remember that the RCX has no stack or heap. This means that, effectively, there is no memory pool from which to allocate things. Here, 'local' means belonging to the current task not the current function, and the number of tasks is fixed (at (...) (23 years ago, 20-Feb-02, to lugnet.robotics.rcx.nqc)
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| | Re: maximum number of variables in RCX2 ?
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Hi John, (...) Yes ! Using more tasks you will get more local space (for each task 16). So maximum number of variables is 32+(16*10) = 192 (...) That's how NQC is handling memory for local variables in functions, subroutines, tasks. Local has a (...) (23 years ago, 20-Feb-02, to lugnet.robotics.rcx.nqc)
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| | Re: maximum number of variables in RCX2 ?
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(...) this (...) only (...) variables (...) the (...) From my understanding of NQC, the compiler automatically selects the most suitable location to store variables. Global variables are obviously always allocated in one of the 32 global storage (...) (23 years ago, 20-Feb-02, to lugnet.robotics.rcx.nqc)
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