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 Robotics / *32873 (-100)
  [ANN] pbForth Version 2.1.3 Release
 
The new 2.1.3 Version of pbForth has only minor fixes thanks to the investigative efforts of David Rojas and Rob Harvey. They were able to provide detailed, reproducible bug reports, which makes fixing bugs so much easier. Thanks guys! Here's what (...) (23 years ago, 10-May-02, to lugnet.robotics.rcx, lugnet.robotics.rcx.pbforth)
 
  Re: New MOC: RoboArm I
 
(...) I agree with your opinions of the flex axles, they dont turn smoothly, and if there is any slack the flex axles sometimes bend in on themselves before turning the axle. I found the best way to use them is to keep the amount of bend to a minium (...) (23 years ago, 10-May-02, to lugnet.robotics)
 
  Finding "real" upgrade sets and flex axles on eBay
 
I've bought the upgrade software from Lego (5 copies in fact @ $20 plus shipping a pop) and I've bought "upgrade kits" or "upgrade sets" on eBay for around $40, plus shipping. These "sets" are not that common, but not rare, either, and include the (...) (23 years ago, 10-May-02, to lugnet.robotics)
 
  egcs compiler - float problems?
 
Can someone using the egcs compiler suite test the following code? It seems it doesn't compile under egcs. int main(int argc, char *argv[]) { double foo = 1.0; return foo > 0.1 ? 0 : 1; } Compiles fine under gcc 3.0.3. Regards, Michael (23 years ago, 10-May-02, to lugnet.robotics.rcx.legos)
 
  Re: RIS 2.0 Upgrade Kit content?
 
Me too... It was kind of disappointing just to get software. I at least thought I would get a few misc. pieces. -Rob "Bob Fay" <rfay@attbi.com> wrote in message news:GvvKyE.pJ@lugnet.com... (...) hardware? (...) (23 years ago, 10-May-02, to lugnet.robotics)
 
  Re: Differential?
 
(...) This is the famous dual differential, which was probably done first by Leo Dorst. Take a look at what he calls the "adder/subtractor device" at (2 URLs) (23 years ago, 10-May-02, to lugnet.robotics)
 
  More problems with floats
 
When I try to compile a program containing the following function: bool tr_guard_foo_loc2_t0() { return getVarVal(&var_foo_cl) >= 0.1; } I get this error: /tmp/ccyEbqnS.s: Assembler messages: /tmp/ccyEbqnS.s:237: Error: cannot create floating-point (...) (23 years ago, 10-May-02, to lugnet.robotics.rcx.legos)
 
  Scout and Cybermaster (WAS: Re: New MOC: RoboArm I
 
(...) This is a bit of a tangent, but... How much memory does the Scout have? I've heard 32K RAM for the RCX but have never heard a number for the Scout. I picked up several Robotic Discovery Sets insanely cheaply about 18 months ago and use them (...) (23 years ago, 11-May-02, to lugnet.robotics)
 
  Re: semaphores
 
Would it be possible for you to send the entire source? I would like to see how it interacts with the rest of the program. Thanks for your help. "kenneth johansen" <kennethj@stud.cs.uit.no> wrote in message news:3CDAC372.34D72C....uit.no... (...) (...) (23 years ago, 10-May-02, to lugnet.robotics.rcx.legos)
 
  Re: New MOC: RoboArm I
 
wow, you guys are smart! I need to play with programming agian, I forgot all this stuff. Hey Brian I have two flex axles if you want to borrow them, if that's the route you end up taking. Eric (23 years ago, 10-May-02, to lugnet.robotics)
 
  Re: New MOC: RoboArm I
 
By making a good programming you can control lots of functions with one touch sensor, wich would be complicated but it's possible. I have tried using two touch sensors to control motors, let's say you press the sensor once for motor A, twice for B, (...) (23 years ago, 10-May-02, to lugnet.robotics)
 
  Re: RIS 2.0 Upgrade Kit content?
 
Mine contained only the software. I bought the USB tower from Lego Dacta. -- Bob Fay THE SHOP (URL) Wang" <lkwang@mail.ncku.edu.tw> wrote in message news:B901594A966879A....edu.tw... (...) (23 years ago, 10-May-02, to lugnet.robotics)
 
  RIS 2.0 Upgrade Kit content?
 
What are in the 2.0 upgrade kit? Only software, or software and hardware? It is said that it contains a USB IR transmitter. I use NQC, on a Macintosh. Thank you in advance. -- Li-Kai Wang, M.D. Dept. of Anesthesiology, National Cheng Kung University (...) (23 years ago, 10-May-02, to lugnet.robotics)
 
  Re: New MOC: RoboArm I
 
(...) Yes - you need to thread them though some technic beams along the way. ---...--- Steve Baker ---...--- Mail : <sjbaker1@airmail.net> WorkMail: <sjbaker@link.com> URLs : (8 URLs) (23 years ago, 11-May-02, to lugnet.robotics)
 
  Re: New MOC: RoboArm I
 
(...) Well, with three touch sensors, you can have (at best) only 8 possibilities at any instant - but with even only one touch sensor, you can input any conceivable command if you have enough time. (Imagine if you entered your commands in morse (...) (23 years ago, 11-May-02, to lugnet.robotics)
 
  Re: New MOC: RoboArm I
 
I don't know of any other source for the flex axle. I found that they did not turn smoothly. Tend to loft. Maybe they can be contained at several points to stop the whipping action. Micromotors seem to work well in pairs, I guess they unlock each (...) (23 years ago, 10-May-02, to lugnet.robotics)
 
  Re: New MOC: RoboArm I
 
(...) You should be able to get 3 sensors to control 3 motors like this: Sensor A not pushed = forward Sensor A pushed = reverse Sensor B pushed and not C = Motor 1 Sensor C pushed and not B = Motor 2 Sensor B and C pushed = Motor 3 -Kyle (23 years ago, 10-May-02, to lugnet.robotics)
 
  Re: New MOC: RoboArm I
 
(...) Thats the exact problem I'm having. I would like to have 1 RCX be able to control the direction of 2 motors. So what I trying to make is a 4 button controller using 3 touch sensors. For instance, I want to have 1 RCX control the opening and (...) (23 years ago, 10-May-02, to lugnet.robotics)
 
  Re: New MOC: RoboArm I
 
(...) Yes - I agree. I'd avoid using micromotors anyway because of their tendancy to lock up when you put any kind of strain on them. Micromotors are good for little decorative features or small one-time operations that don't need much power. So (...) (23 years ago, 10-May-02, to lugnet.robotics)
 
  Re: ___cmpsi2
 
(...) OK, I planned to test 0.2.6; this is the right moment to do it. (...) Do you know why? (I'm just curious) (...) Thank you very much. This was really important to me. Eric (23 years ago, 9-May-02, to lugnet.robotics.rcx.legos)
 
  Re: New MOC: RoboArm I
 
(...) I've used a collection of four Scouts driven by IR commands from an RCX to drive a total of eleven motors. Just program the scouts to read simple 1-byte messages sent from the RCX - use the top two bits to select which Scout you are talking (...) (23 years ago, 10-May-02, to lugnet.robotics)
 
  Re: New MOC: RoboArm I
 
I am not a big fan of Lego pneumatics either, but they are so light weight and a perfect solution in your application. The micromotors have so little power, that you would have to gear them down to get any holding power for your grippers. Then (...) (23 years ago, 9-May-02, to lugnet.robotics, lugnet.technic, lugnet.build)
 
  RE: Apparent 'time-out'
 
(...) Rob, Thanks for this. I think I'll be able to get to this tonight. I'll have a good look at what is going on. Cheers, Ralph (23 years ago, 9-May-02, to lugnet.robotics.rcx.pbforth)
 
  FW: Apparent 'time-out'
 
(...) Have you seen the articles I recently wrote here... (URL) Cheers, Ralph (23 years ago, 9-May-02, to lugnet.robotics.rcx.pbforth)
 
  Re: ___cmpsi2
 
(...) Don't know. Just made a quick download from sourceforge. Didn't install, just looked through with mc. Seems that in the mint-lib, both cmp2-files are missing. And no printf in the c library path. Regards, Michael (23 years ago, 9-May-02, to lugnet.robotics.rcx.legos)
 
  Re: Apparent 'time-out'
 
(...) Yes, the flashlight consistently makes the RCX go "dead". (...) No rush. PATIENT: "Doctor, it really hurts when I move my arm like this." DOCTOR: "Then don't move your arm like that." (...) I look forward to the article. I am currently working (...) (23 years ago, 9-May-02, to lugnet.robotics.rcx.pbforth)
 
  Re: ___cmpsi2
 
(...) How did *that* happen?!!?!? Just curious. Somebody should point a finger, just for yuks. -Kekoa (23 years ago, 9-May-02, to lugnet.robotics.rcx.legos)
 
  RE: Apparent 'time-out'
 
(...) OK, so if the RCX is in the "dead" state, shutting down the GUI and restarting the GUI makes no difference. And you can always clobber the RCX running pbForth by shining a light at it? I'll see what I can do on this end to reproduce the (...) (23 years ago, 9-May-02, to lugnet.robotics.rcx.pbforth)
 
  Re: Apparent 'time-out'
 
Shutting down the GUI and starting it back up has no effect, pbForth continues to respond correctly. Adding words to the dictionary doesn't seem to make any difference either. Whether having just uploaded the firmware or having the RCX active for (...) (23 years ago, 9-May-02, to lugnet.robotics.rcx.pbforth)
 
  Re: semaphores
 
a short example: #include <semaphore.h> // for semaphore opperations // global buffer, used to store incoming messages. // the buffer is checked by the application waiting for the message. struct inn_msg{ char *msg; sem_t lock; }; //create a (...) (23 years ago, 9-May-02, to lugnet.robotics.rcx.legos)
 
  Re: New MOC: RoboArm I
 
OH SNAP!! That's really cool! And then Robo Arm 2!!! Dang it looks complicated, can't wait to shake it's hand in person. ;) Oh man, look at all those cool components! Drool! Legomaster (23 years ago, 9-May-02, to lugnet.robotics, lugnet.technic, lugnet.build)
 
  RE: Apparent 'time-out'
 
(...) Thanks... (...) When the RCX is sitting idle, the pbForth interpreter is spinning and looking for characters from the IR. I doubt that sunlight (or flashlight) would be interpreted as valid chars, and the error handling should just discard the (...) (23 years ago, 9-May-02, to lugnet.robotics.rcx.pbforth)
 
  semaphores
 
Does anyone have any code that implements semaphores and shows where they might be useful? That is one place that the documentation seems a little weak. Thanks, Sam (23 years ago, 9-May-02, to lugnet.robotics.rcx.legos)
 
  Re: Apparent 'time-out'
 
The GUI version is 2.1.0. The pbForth version (COLD) is 2.1.2. I am using the USB tower with RIS 2.0. Once the RCX stops responding, if I pull out a battery and re-upload the firmware, the RCX will respond again to the same GUI session. In other (...) (23 years ago, 9-May-02, to lugnet.robotics.rcx.pbforth)
 
  Re: ___cmpsi2
 
(...) Had to look myself to belive it. But you are right, cmpsi2 is in the 0.2.6 system, but not in the 0.2.5 system. (...) No, that are the wrong ones. You need the lib functions for the cross compiled code. libgcc.a is code that gcc needs on your (...) (23 years ago, 9-May-02, to lugnet.robotics.rcx.legos)
 
  RE: Apparent 'time-out'
 
(...) One more bit of useful information would be the version of pbForth (which you get by typing COLD) and which version of the GUI (top left of window) Also, are you using the serial or USB tower? What messages were you sending to the RCX before (...) (23 years ago, 9-May-02, to lugnet.robotics.rcx.pbforth)
 
  Apparent 'time-out'
 
I am using the TCL GUI provided by Ralph Hempel on a Windows 2000 machine to program the RCX 2.0 in pbForth. The upload of the firmware appears to be working just fine. I get responses back from the RCX and am able to create new functions without (...) (23 years ago, 9-May-02, to lugnet.robotics.rcx.pbforth)
 
  Re: New MOC: RoboArm I
 
(...) Its already gone, RoboArm II is being worked on. I didnt get video of this one but I certainly will of the next. Things I'm changing for the second, I'd really like to remove all of the pnuematics, I'm not a big fan of it yet, and I think I (...) (23 years ago, 9-May-02, to lugnet.robotics, lugnet.technic, lugnet.build)
 
  Re: BimP Needs Your Help
 
(...) Don't need one ROSCO...you can also view BimP at: (URL)To increase the friction on an axle, use the hose reel / holder (part 2584 and (...) Thanks for getting us started with the great tip! (23 years ago, 9-May-02, to lugnet.technic, lugnet.robotics)
 
  Re: ___cmpsi2
 
(...) I don't find cmpsi2 in the sources of LegOS 0.2.5 (in lib/mint)! I found a _cmpsi2.o in libgcc.a (from egcs 1.1.2), but I really don't know how gcc (and ld) uses that library. The makefiles come from the LegOS tarball. According to the output, (...) (23 years ago, 9-May-02, to lugnet.robotics.rcx.legos)
 
  Re: ___cmpsi2
 
(...) cmpsi2 is part of the libmint.a library. Would you please post (or send me) your source code and your Makefile? Regards, Mike (23 years ago, 9-May-02, to lugnet.robotics.rcx.legos)
 
  Re: BimP Needs Your Help
 
(...) Well, I don't have a PDA, but here's my first tip: To increase the friction on an axle, use the hose reel / holder (part 2584 and 2585) ROSCO (23 years ago, 9-May-02, to lugnet.technic, lugnet.robotics)
 
  BimP Needs Your Help
 
BimP is considering a new "Tips and Tricks" section. Imagine, carrying the best Technic/Robotic tips on your PDA! In order to do so, I need the help of the LUGNET Community. What we are looking for are short little tips such as "the best way to join (...) (23 years ago, 9-May-02, to lugnet.technic, lugnet.robotics)
 
  ___cmpsi2
 
Using a multiplication between an int (in my case time_t) and a double number results in the following error: main.o(.text+0x72):main.c: undefined reference to `___cmpsi2' Can someone help me? I'm running egcs 1.1.2 and binutils 2.12. Eric (23 years ago, 9-May-02, to lugnet.robotics.rcx.legos)
 
  Re: New MOC: RoboArm I
 
That is a very impressive piece of engineering. I find it hard to comment on a particular part. It is all very well done. I hope you took a little video of it in action before it is dismantled. What are your hopes for the sequel? -- Bob Fay THE SHOP (...) (23 years ago, 8-May-02, to lugnet.robotics, lugnet.technic, lugnet.build)
 
  Re: Powered Sensors
 
Ok, I have gotten myself confused again. 0-0.32mA represents a voltage dropbetween 0 - 3.2 volts. Therefore the voltage that the RCX "reads" on theA2D is between 5 - 1.8 volts (1023 - 368 RAW)? To get a reading of 0 (RAW)it seems as though you would (...) (23 years ago, 8-May-02, to lugnet.robotics.rcx.legos)
 
  Re: Converting a float to an integer
 
(...) float f = 1.4; int i = (int)((i >= 0) ? i + 0.5 : i - 0.5); OR if (f >= 0) i = (int)(i + 0.5); else i = (int)(i - 0.5); This is assuming you want to round to the nearest integer. Just curious, where are you getting the ascii strings that you (...) (23 years ago, 8-May-02, to lugnet.robotics.rcx.legos)
 
  New MOC: RoboArm I
 
Hello all, I've posted pictures of my newest robotic creation, RoboArm I. (URL) actually happend by accident, I was tryin to find the simplest method to drive a turntable using 2 micro motors. I found a solution I was happy with using only a few (...) (23 years ago, 8-May-02, to lugnet.robotics, lugnet.technic, lugnet.build) ! 
 
  Re: RCX Command Center
 
Welcome Jonathan. RcxCC is no longer supported. Check out this site for the supported version. (URL) you have problems tell us what the file is that is missing. I am sure some one can help. -- Bob Fay THE SHOP (URL) Spitz" <lego-robotics@crynwr.com> (...) (23 years ago, 8-May-02, to lugnet.robotics)
 
  Re: Program() always returns 0
 
I believe any data source (not just timers/sensors/variables) can be used in SetUserDisplay. The big limitation is that local variables cannot be used since the display is updated in a global context independent of the tasks. If you know of data (...) (23 years ago, 8-May-02, to lugnet.robotics.rcx.nqc)
 
  Re: Program() always returns 0
 
Oops. Looks like a bug in the NQC API file. I just fixed the bug in the NQC source, but it's not major enough to warrant a new release yet. In the meantime, you can add the following lines to the top of of your source file as a work-around: #undef (...) (23 years ago, 8-May-02, to lugnet.robotics.rcx.nqc)
 
  RCX Command Center
 
This is my first message to the list, I hope I will contribute a lot to it. But first I'm trying to improve my robots with a more powerful programming. I tried RcxCC but it gives me an error because of a class or dll that isn't registered and I (...) (23 years ago, 7-May-02, to lugnet.robotics)
 
  Converting a float to an integer
 
Hopefully this isnt a silly question. Does anyone know how to covert a float to an integer? It doesn't appear that the function atoi exists. Michael. (23 years ago, 7-May-02, to lugnet.robotics.rcx.legos)
 
  Re: Powered Sensors
 
----- Original Message ----- From: "John Barnes" <barnes@sensors.com> Newsgroups: lugnet.robotics.rcx.legos Sent: Tuesday, May 07, 2002 2:23 PM Subject: Re: Powered Sensors (...) the (...) across (...) Ok... lets see if I understand this.... For (...) (23 years ago, 7-May-02, to lugnet.robotics.rcx.legos)
 
  Re: An OrthoGlide Mill
 
Thanks for your comments Rob. The crossed rubber belts are a last ditch attempt to remove the backlash from the joints. The use of friction pins caused the joints to become so stiff that the platform would not follow the action of the arms. I found (...) (23 years ago, 7-May-02, to lugnet.technic, lugnet.robotics)
 
  Re: An OrthoGlide Mill
 
Beautiful! I saw that page on parallemic as well... Looks like you did a good job making the lego version! I liked the multiple worm gear setup you used to take up the backlash. Just a couple of questions... What are the crossed rubber bands for? Do (...) (23 years ago, 7-May-02, to lugnet.technic, lugnet.robotics)
 
  Re: Powered Sensors
 
No, the RCX knows nothing about the diodes. That is why devices like the light sensor only send a current signal in the range 0 - 0.32mA back to the RCX. This current then creates a voltage drop across the 10k reference resistor with respect to the (...) (23 years ago, 7-May-02, to lugnet.robotics.rcx.legos)
 
  Powered Sensors
 
Hello all, I recently purchased "Extreme Mindstorms - An Advanced Guide to LEGO Mindstorms" and I must say it is one of the best books out there for the power user. I have a number of questions regarding powered sensors. First of all, when the RCX (...) (23 years ago, 7-May-02, to lugnet.robotics.rcx.legos)
 
  Re: IR tower for ordinary infrared communication
 
I have heard of people using universal remotes that can "learn" commands to control their RCXen. Try a web/lugnet search. (...) (23 years ago, 7-May-02, to lugnet.robotics)
 
  Space Shuttle - quite a model!
 
Hi All: I was lucky enough to get a mint sealed Space Shuttle kit (8480) on EBay recently at a good price. I must say, I am quite impressed by the clever engineering incorporated in the model. Particularly interesting is the function gearshift (...) (23 years ago, 7-May-02, to lugnet.robotics)
 
  Re: IR tower for ordinary infrared communication
 
Is it possible to use the IR tower or RCX as a TV remote? Or use a universal remote to control an RCX? (...) (23 years ago, 6-May-02, to lugnet.robotics)
 
  Re: An OrthoGlide Mill
 
"Bob Fay" <rfay@attbi.com> wrote in message news:GvoyrL.G8x@lugnet.com... (...) You put a lot of work into it, and have a great result! Iain (23 years ago, 6-May-02, to lugnet.technic, lugnet.robotics)
 
  Re: Differential?
 
You can find complete building instructions on my site: (URL) you will need at least 2 differentials. ----- Original Message ----- From: "Ryan Humes" <nomad@celabs.com> To: <sjbaker1@airmail.net>; "Lego Robotics" <lego-robotics@crynwr.com> Sent: (...) (23 years ago, 6-May-02, to lugnet.robotics)
 
  Technic/Mindstorms™ at BrickFest 2002
 
BrickFest 2002 is planning on expanding on last year's events and themes by adding a selection of Technics/Mindstorms™ activities. This will include three categories of fun and games spread throughout the three day fest - MOC display, competitions (...) (23 years ago, 6-May-02, to lugnet.events.brickfest, lugnet.technic, lugnet.announce, lugnet.robotics) ! 
 
  Re: Next test version avail. 0.2.6.05 - have time?
 
(...) I'm not sure if that's a good idea. Of course, they can always be a compiler switch to turn them off if you don't want them. The thing is, though, that there are lots of tradeoffs between speed, memory use, and accuracy in this kind of (...) (23 years ago, 6-May-02, to lugnet.robotics.rcx.legos)
 
  Re: Next test version avail. 0.2.6.05 - have time?
 
Ok, this brings up an interesting question... What is the best way to use LNP with windows? the version of WinLNP that I see is _ancient_ and requires VC++ to work.... so I see that there is a linux version, I was wondering it would be possible to (...) (23 years ago, 6-May-02, to lugnet.robotics.rcx.legos)
 
  Re: how to use RCX under linux?
 
(...) Did you really try to find the answer yourself before asking here? Entering "ris 2.0 linux" into google gave me this link: Lego Mindstorm with Linux Mini-HOWTO www.ibiblio.org/pub/...OWTO/mini/ other-formats/html_s.../Lego.html If you are (...) (23 years ago, 6-May-02, to lugnet.robotics)
 
  Re: legomin
 
I figure other people are going to wonder the same thing I did, and that is "WTF is a theremin?" So I'll give you the benefit of my search: (URL) it's a musical instrument you play by waving your hand near, without touching. (...) (23 years ago, 6-May-02, to lugnet.robotics)
 
  An OrthoGlide Mill
 
I have posted some pictures and a movie of my attempt to build a working OrthoGlide Mill. I was only moderately successful. I have cut candles, toast, sidewalk chalk and now the ........ Well, you will see! (URL) Fay THE SHOP (URL) (23 years ago, 6-May-02, to lugnet.technic, lugnet.robotics)
 
  how to use RCX under linux?
 
Is there a good guide on how to use my RIS 2.0 under linux? (23 years ago, 6-May-02, to lugnet.robotics)
 
  legomin
 
I'm a big fan of the theremin and this is the lego version. its basicly the lightsensor above the IR port (as in a proximitie sensor) and the folowing code in nqc int level; task send_signal() { while(true) {SendMessage(0); Wait(10);} } task (...) (23 years ago, 5-May-02, to lugnet.robotics)
 
  Re: cygwin messed up?
 
Jason, There is a problem within the Makefile logic atleast with some windows OS. What OS are you trying it on? I submitted a bug to the legOS project on sourceforge ((URL) and submitted a suggestion for a fix here ((URL) is happening (atleast on my (...) (23 years ago, 6-May-02, to lugnet.robotics.rcx.legos)
 
  Next test version avail. 0.2.6.05 - have time?
 
We are looking for help testing our next very-early integration. We have revised the LNP support and have reworked the support for the LEGO Infrared Remote Control to create this 2nd test version. This version mimicks the stock firmware behavior. (...) (23 years ago, 6-May-02, to lugnet.robotics.rcx.legos)
 
  Re: Program() always returns 0
 
SetUserDisplay does not work like that. You need to specify either a sensor, timer, or global variable. Once you have done that it will continuously update the display as the value changes. In your case you should write your program something like: (...) (23 years ago, 6-May-02, to lugnet.robotics.rcx.nqc)
 
  Program() always returns 0
 
The following code always displays 0 regardless of the program slot in which it is run. Is this a bug, or do I not understand the purpose of Program()? I'm using the 2.0 firmware and NQC 2.4 r2. task main() { SetUserDisplay(Program(),0); (...) (23 years ago, 6-May-02, to lugnet.robotics.rcx.nqc)
 
  Re: cygwin messed up?
 
You can try a few things with the makefile.common in the util directory and change the tool prefix from cc to gcc. Later u might have another error related to ld at that point u'll have to put the extension .exe in front of ld in one of the (...) (23 years ago, 6-May-02, to lugnet.robotics.rcx.legos)
 
  cygwin messed up?
 
i'm running the lates version of cygwin and i'm trying to follow the instructions at (URL) but, when i try to make depend i get some errors: $ make depend for i in util lib boot demo ; do c:/djgpp/bin/make.exe NODEPS=yes -C $i depend || exit 2 ; (...) (23 years ago, 5-May-02, to lugnet.robotics.rcx.legos)
 
  Re: NQC and BricxCC problem
 
John, The crash is because NQC is trying to print out an error message but doesn't have legitimate information about the lexical location (file, line number, etc) of where the error occurred. The error itself is from the "#pragma init" line - (...) (23 years ago, 5-May-02, to lugnet.robotics.rcx.nqc)
 
  an RCX programs another RCX
 
Hi all, I've posted a new page to our site http:/www.convict.lu...sIntro.htm that turns around the theme of programming an RCX from another RCX. A first application is a robot called SCOUT (it is a Rover2 taken from the Mars Exploration Set) (...) (23 years ago, 5-May-02, to lugnet.robotics)
 
  RE: Co-operative Multi tasking in pbforth 2.1
 
(...) Mario, Thanks for the feedback. As you all know, writin this stuff is hard. I figure 10 minutes of reading time is probably 2 or 3 hours of writing... (...) Ha! The dark side has won you over! Can you give us a tiny hint on the subject? I'll (...) (23 years ago, 5-May-02, to lugnet.robotics.rcx.pbforth)
 
  Re: tty problem
 
(...) try this: ../util/firmdl3 --tty=usb legOS.srec (23 years ago, 5-May-02, to lugnet.robotics.rcx.legos)
 
  NQC and BricxCC problem
 
Dave (or anyone else who might have an idea), I'm trying to figure out a problem that a user reported regarding BricxCC and its interaction with NQC. (I've only tested it against the latest release of both BricxCC and NQC.) When attempting to (...) (23 years ago, 5-May-02, to lugnet.robotics.rcx.nqc)
 
  tty problem
 
Hello, I have recently downloaded the legos-0.2.6 version and have built it under windows Cygwin. when I give the command being in the boot directory where legOS.srec is export RCXTTY=USB ../util/firmdl3 legOS.srec it says USB: No such file or (...) (23 years ago, 5-May-02, to lugnet.robotics.rcx.legos)
 
  is it possible to use the lego vision command with the handyboard?
 
I'm interested in using the lego vision command with my handyboard. But it seems to use a (usb) port. So is there a way to use a (usb) with the handyboard? And has anyone ever attempted to hack the lego vision command for their handyboard? Also does (...) (23 years ago, 4-May-02, to lugnet.robotics.handyboard)
 
  OT: H8S disassembler?
 
Ok, this is somewhat off-topic, but I'm hoping the people here can help. I'm looking for a disassembler for the H8S/2214 processor (and probably an assembler too). This is the processor used in the Cybiko Classic. I don't know how similar it is to (...) (23 years ago, 4-May-02, to lugnet.robotics)
 
  Re: makefile?
 
Fredrik, You can check to see what Cygwin packages have been installed on your system by using the cygcheck command. Try cygcheck -c If the output is too large for your dos window you can export it to a file by using the following command cygcheck (...) (23 years ago, 4-May-02, to lugnet.robotics.rcx.legos)
 
  Re: Co-operative Multi tasking in pbforth 2.1
 
In lugnet.robotics.rcx.pbforth, Ralph Hempel writes: [...snip...] (...) Ralph, your recent additions to pbForth and to its documentation are simply great. Can't wait to see the next article... I'm currently in a "pbForth phase". Not only I do (...) (23 years ago, 4-May-02, to lugnet.robotics.rcx.pbforth)
 
  Re: Differential?
 
Thanks, I'm going to test out the Adder-Subtractor as soon as i get my hands on a second differential. Looks like that will do the trick. ----- Original Message ----- From: "Steve Baker" <sjbaker1@airmail.net> To: "Lego Robotics" (...) (23 years ago, 4-May-02, to lugnet.robotics)
 
  RE: makefile?
 
You need "make" installed on your system. Run the cygwin setup.exe and install it. Good luck. -----Original Message----- From: news-gateway@lugnet.com [mailto:news-gateway...ugnet.com] On Behalf Of Fredrik Helin Sent: Saturday, May 04, 2002 6:48 AM (...) (23 years ago, 4-May-02, to lugnet.robotics.rcx.legos)
 
  makefile?
 
Hi! The "make" command in Cygwin returns a: "command not found" after installing legOS 0.2.6 on a Windows 98 machine. I'm currently in the legos-0.2.6 catalogue and the Makefile, Makefile.common, Makefile.user, Makefile.kernel files are all there. (...) (23 years ago, 4-May-02, to lugnet.robotics.rcx.legos)
 
  Re: linux USB driver.
 
(...) Are you sure you got the usbcore module? I'm also not quite sure it will work with 2.4.9 . Jürgen (23 years ago, 4-May-02, to lugnet.robotics.rcx.legos)
 
  Differential?
 
Was wondering if anyone knows of a way to drive 2 axles together. What i mean is, using 2 motors and a differential or some other gear mechanism have them both move forward, both backward, or in opposite directions. I'm sure this has been done (...) (23 years ago, 4-May-02, to lugnet.robotics)
 
  Re: Co-operative Multi tasking in pbforth 2.1
 
Hi Ralph Thanks for you reply. I have just started into the article on background monitoring, its great. I am looking forward to your articles on hooking into the one millisecond timer and use of using John Barnes' ultrasonic sensor. I was going to (...) (23 years ago, 3-May-02, to lugnet.robotics.rcx.pbforth)
 
  BrickFest 2002 Registration
 
The volunteer organizers would like to officially announce that (URL) has been updated and registration is now online. BrickFest 2002 July 19-21 Washington DC(Arlington, VA) George Mason University - Arlington Campus When you register make sure you (...) (23 years ago, 3-May-02, to lugnet.events.brickfest, lugnet.announce, lugnet.org, lugnet.robotics.events) !! 
 
  Re: linux USB driver.
 
I've just upgraded to the kernel 2.4.9-31 and tried to compile this driver. I get the following errors: [root@kelcsts38b usb_lego]# make install /sbin/modprobe -r usb_lego cp usb_lego.o /lib/modules/2.4.9-3...rivers/usb /sbin/modprobe usb_lego (...) (23 years ago, 3-May-02, to lugnet.robotics.rcx.legos)
 
  Re: sys_timer
 
(...) Yes. It is updated from an interrupt routine that fires every 1 ms (IIRC). However.... (...) wait_event is only accurate to 20ms or so, depending on what your other tasks do. So your timing is very accurate, but you're not timing what you (...) (23 years ago, 3-May-02, to lugnet.robotics.rcx.legos)
 
  Re: FetchBot instructions now available
 
I'd like to see build instructions for your Calipers. I can just about figure it out from the pictures, but I can't figure out the depth gauge. (...) (23 years ago, 3-May-02, to lugnet.robotics)
 
  Re: Current Makefile logic fails for nonNT Windows OS
 
Taking a second look at this and noticing some past post about this issue with WinXP ((URL) a much cleaner code might look like the following # # WindowsNT/Cygnwin, test against several values: # ifneq (,$(findstring $(OSTYPE),cygwin32 cygwin (...) (23 years ago, 3-May-02, to lugnet.robotics.rcx.legos)
 
  RE: Co-operative Multi tasking in pbforth 2.1
 
Phil, I have some hooks in the current version of pbForth that you can use to implement cooperative multi-tasking. Have you read the article on implementing a background monitor to check for button presses? It's at: (URL) I was going to write (...) (23 years ago, 3-May-02, to lugnet.robotics.rcx.pbforth)
 
  Current Makefile logic fails for nonNT Windows OS
 
I am compiling under windows 98 using cygwin version 1.3.10. In Makefile.common (/legOS-0.2.6,/legOS....2.6/util) the logic to determine whether the OS is a windows system fails due to the fact that uname returns CYGWIN_98-4.10. I submitted a bug (...) (23 years ago, 3-May-02, to lugnet.robotics.rcx.legos)


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