 | | Another Proposal
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Request for comments: I moved the visualization code for the man_stand / man_run out of the task_scheduler and put it in the tm_idle_task. Performance is enhanced at the expense of the display not updating when the processor load is at or near 100%. (...) (23 years ago, 21-Mar-02, to lugnet.robotics.rcx.legos)
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| | Re: LegOS newbie needs help
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I have all the tools (fast connection and CD burner). I need to check the licensing to see if there would be a problem with sending it to you on CD... but other than that, contact me off list and maybe we can get you SP5. -Joe NOTE: Remove (...) (23 years ago, 21-Mar-02, to lugnet.robotics)
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| | Re: Proposal: int program_running()
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I know it is fairly trivial, but it is a start. I am working on some other things... hopefully to be included either in patch form or in 0.2.6 (if/when it comes about). I like the idea of the inline function best, but will leave that up for debate. (...) (23 years ago, 21-Mar-02, to lugnet.robotics.rcx.legos)
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| | Re: Motion Tracking Robot Using an RCX, Visual Basic, and a 3Com Webcam
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"nullgel" <nullgel@cox.net> wrote in message news:GtAJI3.JK3@lugnet.com... (...) Nate, This is absolutely amazing! Thanks for taking the time to write this up and post the images, it's great! I really enjoyed reading it. Iain (23 years ago, 21-Mar-02, to lugnet.robotics)
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| |
| | Re: Spectrum as source of Technic Spares
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According to their customer service, they are not allowed to sell Lego in the USA. ----- Original Message ----- From: "Mike Fusion" <mikefusion@hotmail.com> To: <lugnet.technic@lugnet.com>; <lugnet.robotics.rcx...ugnet.com> Sent: Friday, March 15, (...) (23 years ago, 21-Mar-02, to lugnet.technic, lugnet.robotics.rcx)
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| | Re: RIS 2.0 or 1.5 (minimum requirements)
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The 2.0 firmware is available separately from LEGO as part of the 2.0 SDK. You can use this firmware with a 1.5 set (or even a 1.0 set). If you are not planning on using the Lego software then the only difference between 2.0 and 1.5 is that 2.0 has (...) (23 years ago, 21-Mar-02, to lugnet.robotics.rcx.nqc)
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| | Re: Proposal: int program_running()
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(...) I've thought about this before but never did anything 8?( I think I'd prefer a macro, thus removing the need for #ifdef. Although you wouldn't want the #ifdef anyway, as you need to call it in the kernel, and #ifdefing it out would be rather (...) (23 years ago, 20-Mar-02, to lugnet.robotics.rcx.legos)
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| | Motion Tracking Robot Using an RCX, Visual Basic, and a 3Com Webcam
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Please check out the report on my site. I'd love to hear some feedback or questions. (URL) (23 years ago, 20-Mar-02, to lugnet.robotics)
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| |
| | LEGO RCX and I2C
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Hi, the Elektor - Magazine for Electronics and Computer - comes with a very interesting project. They have a pcb and software in NQC. Have a look to the homepages (URL) I2C Interface for Lego RCX 'Brick' (...) The magazine comes tomorrow. I 'll test (...) (23 years ago, 20-Mar-02, to lugnet.robotics)
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| | RE: LegOS newbie needs help
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If you know someone with a faster connection, then perhaps they could d/l it and burn it to a CD for you. BTW, I tried this out with VS6 w/ no SP and reproed the problem. Then I installed SP5 and tried again. So at least you now know that getting (...) (23 years ago, 20-Mar-02, to lugnet.robotics)
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| | Re: LegOS newbie needs help
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Thanks for you’re help, but downloading 129 MB whit my connection is not a good idea, so that’s now option for me. I also can’t order it on CD because this is only available for subscribers in North America. I’m not a subscriber and I don’t live in (...) (23 years ago, 20-Mar-02, to lugnet.robotics)
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| | Re: RIS 2.0 or 1.5 (minimum requirements)
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A more important consideration is whether USB or Serial is more convenient on your notebook. 1.5 comes with a COM port interface, and the 2.0 comes with a USB interface. USB is a lot better, if you have it. (...) (23 years ago, 20-Mar-02, to lugnet.robotics.rcx.nqc)
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| | Re: Sony's New Biped 'Bot
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I saw a quick segment on the News last night, I was amazed at the speed and fluidity of the movements, once I get over how well it moves, I'm gonna go look into the other aspects and funtions of the design. The Future is here Folks. Legomaster (23 years ago, 20-Mar-02, to lugnet.org.ca.rtltoronto, lugnet.robotics)
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| | Re: LegOS newbie needs help
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|
Have you installed the Visual Studio service packs? You stated that you had reinstalled Visual Studio... so I am guessing that it is currently 6.0 (with no service packs). I can't guarentee that this will solve THIS problem, but I know from (...) (23 years ago, 20-Mar-02, to lugnet.robotics)
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| | Proposal: int program_running()
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I have noticed several places in the kernel where nb_tasks is used to see if a program is running. Currently, nb_tasks > 3 means that a program is running and <= 3 means that just the kernel processes are running. I would like to propose that the (...) (23 years ago, 20-Mar-02, to lugnet.robotics.rcx.legos)
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| | RIS 2.0 or 1.5 (minimum requirements)
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I am going to buy the RIS 2.0, but I am not quite sure if I should better buy the RIS 1.5. That is, because my notebook (366 Mhz PII, 64 MB RAM, but only 2.5 MB Video RAM) does not fully meet the minimum requirements as stated by LEGO (what is (...) (23 years ago, 20-Mar-02, to lugnet.robotics.rcx.nqc)
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| | Re: motors are stuck...
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Here are some prehaps useful links (...) (23 years ago, 20-Mar-02, to lugnet.robotics.rcx.legos)
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| | LegOS newbie needs help
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Hi, I’ve LegOS up and running under Win2000 whit Cycwin and this works fine, but I missed the possibility of networking under LegOS. After reading some manuals I discovered WinLNP. So I downloaded this program And followed the install-instructions, (...) (23 years ago, 20-Mar-02, to lugnet.robotics)
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| | Re: How much can you shrink a dual differential drive?
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|
Miguel, The smallest design for an adder-subtracter I have seen online is by Denis Cousineau. You can find it at (URL) . However, you should know that his design, and one that he links to have inspired myself, and a few of my robotics friends to (...) (23 years ago, 12-Mar-02, to lugnet.robotics)
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| |
| | Re: NY aqueduct tunnel inspector bot
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Chris, Actually it has been done! The University of Rhode Island Oceanography Undergraduate/Graduate Program entry to the 2000 International Autonomous Underwater Vehicle Competion (AUVISI - (URL) won the competition with a submersible whos engine (...) (23 years ago, 20-Mar-02, to lugnet.robotics)
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| | Re: How much can you shrink a dual differential drive?
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(...) Thanks a lot, Rosco. I think I'm going to go with Stefano Prosseda's variation, which you also mention on your webpage (URL) clearly didn't quite understand the concept and now see how my design had way too many gears only to accomplish (...) (23 years ago, 20-Mar-02, to lugnet.technic, lugnet.robotics)
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| | Re: How much can you shrink a dual differential drive?
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(...) snip (...) Here's yet another shrunken dual differential design. It uses worm gears to drive both differential housings as a space saving measure. This also the adds the feature (?) of a bit more gear reduction. There's a few pics of the (...) (23 years ago, 20-Mar-02, to lugnet.technic, lugnet.robotics)
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| |
| | Sony's New Biped 'Bot
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Straight from the top of Sony Tower in Tokyo comes this press release on a newly developed "entertainment robot" - the SDR-4X: (URL) SDR-4X is without any doubt a prototype successor to the widely successful AIBO bot series. As always Sony haven't (...) (23 years ago, 20-Mar-02, to lugnet.org.ca.rtltoronto, lugnet.robotics)
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| | Re: Interesting but slightly off topic
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(...) For ~US$32k I'm guessing that some slight enhancements could be expected. The section referring to its ability to sing was amusing - just give it the music and lyrics (ie - program it) and it will sing on demand. Yeah, I had an Amiga once, (...) (23 years ago, 20-Mar-02, to lugnet.robotics)
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| | Re: How much can you shrink a dual differential drive?
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(...) Excellent color coding in your pics. Regrettably, I have no practical advice. When I built the differential drive in Dave Baum's book, I was dumbfounded by the principle. I look forward to to seeing what is clearly a demanding project. - Kyle (23 years ago, 20-Mar-02, to lugnet.technic, lugnet.robotics)
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| | Re: How much can you shrink a dual differential drive?
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(...) Well, I think several people have delved into this, but here's my contribution (URL) It doesn't solve the "dual speed" problem, but it's fairly small, and can be reduced further. ROSCO (23 years ago, 19-Mar-02, to lugnet.technic, lugnet.robotics)
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| |
| | How much can you shrink a dual differential drive?
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Hi all, I've got an intriguing little MOC coming up that hopefully will interest both the technicheads and the robogeeks. It is a tracked vehicle with a twist, but you'll have to wait to learn all the details ;-) In the meantime, here is something I (...) (23 years ago, 19-Mar-02, to lugnet.technic, lugnet.robotics)
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| | BricxCC release 3.3.4.4
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I've released BricxCC version 3.3.4.4. It fixes a timeout problem when trying to find the Cybermaster brick (although not all users experienced this problem). It also fixes some problems on the Color tab of the Preferences dialog. It fixes the (...) (23 years ago, 19-Mar-02, to lugnet.robotics.rcx.nqc)
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| | Interesting but slightly off topic
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|
Sorry if this isn't the right forum, but ... (URL) like fun to me. Now if only we could find a way to pack that sort of CPU horsepower into a Lego brick ... hmmmmm. JB (23 years ago, 19-Mar-02, to lugnet.robotics)
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| | Re: RCX as a PGP engine
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(...) Definitely post it! Better than that, how about sending me the code and I'll add it to our robots section as a unique demonstration. (...) Shouldn't be a problem. Most of the source code in the official Sun package is easy to port to leJOS. (...) (23 years ago, 19-Mar-02, to lugnet.robotics.rcx.legos, lugnet.robotics.rcx.java)
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| | Re: H8 assembler
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(...) I'm not entirely sure why either, other than that it is extremely easy to add new language support to the editor component in BricxCC and I thought it would be cool if a user of BricxCC who also writes H8 assembler would be able to edit all (...) (23 years ago, 18-Mar-02, to lugnet.robotics.rcx.pbforth)
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| | RE: H8 assembler
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(...) No rest for the wicked, John. (...) I always specify the size. Some assemblers can infer the size from the operand, but it's usually better practice to specify it. The L suffix is not supported on the H8/300 variant used by the RCX. (...) I'm (...) (23 years ago, 18-Mar-02, to lugnet.robotics.rcx.pbforth)
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| | RoboTank a platform for triangulation
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Some days ago, i stared to build a tank like robot for my triangulation tests. Some pictures can be found at: (URL) Carsten (23 years ago, 18-Mar-02, to lugnet.robotics)
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| | Re: RCX as a PGP engine
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(...) I just 'ported' (euphemism for minor modifications) some code lingering on the web for fun and voila: MD5 on RCX is up and running (lejos). If anyone's interested, I can post the code. It allows for authentication (PC sends random challenge, (...) (23 years ago, 18-Mar-02, to lugnet.robotics.rcx.legos, lugnet.robotics.rcx.java)
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| | Re: motors are stuck...
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(...) This applies to the red 2x2 micromotor, not to the mini or power motor found in the RIS. I vaguely remember (try searching in LUGNET news) that the way to save a power motor, if at all possible, is to apply power in the right way, and not to (...) (23 years ago, 18-Mar-02, to lugnet.robotics.rcx.legos)
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| | H8 assembler
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I'm working on a syntax highlighter for H8 assembler for BricxCC. I downloaded a couple PDFs from Hitachi's website. I have the H8/300 Programming Manual (e602025_h8300.pdf) and THE INTRODUCTION OF HITACHI H8 MICROCOMPUTERS (introduction_h8.pdf). (...) (23 years ago, 18-Mar-02, to lugnet.robotics.rcx.pbforth)
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| | Re: motors are stuck...
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According to a book by Ferrari brothers ("Building Robots With Lego Mindstorms") here's what you can try: --- How to release a Jammed Micromotor A micromotor jams so easily, you should know what to do when it occurs. The following list should help: (...) (23 years ago, 18-Mar-02, to lugnet.robotics.rcx.legos)
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| | Re: Cleaning the RCX
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Hi Chris, Thanks for the input. This is the kind of information I need. I have always relied on alcohol as a cleaner for contacts and I did not think of the effect it might have on the rubber contact. I thought the button might be a carbon contact. (...) (23 years ago, 18-Mar-02, to lugnet.robotics.rcx)
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| | Re: New Book - Core Lego Mindstorms
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You have to wonder how the SDK could possibly do that. The only opportunity I can see for it doing this is with the binary files javac and java, but I doubt they have auto-update features. Maybe the applet JVM has this? p.s. Kudos for reading the (...) (23 years ago, 18-Mar-02, to lugnet.robotics)
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| | Re: Cleaning the RCX
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(...) Bob: Great page. :) I have one point of interest. When I have used Isopropyl Alcohol (at 99%) to clean the button contacts of tv remote controls, I have found that the black "rubber" button can degrade and erode. Maybe someone with more (...) (23 years ago, 18-Mar-02, to lugnet.robotics.rcx)
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| | Cleaning the RCX
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I have been working on a page to assist in the cleaning of the contacts on the RCX. Principally the battery connections to the pc board and the control button contacts. If you have performed this service before, please check my work and see if (...) (23 years ago, 18-Mar-02, to lugnet.robotics.rcx)
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| | Re: motors are stuck...
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just give Lego a call at 1-800-363-2140 they'll have the new stuff in the mail the next day. you don't need to send in the broken parts either ...although for the sake of all Lego enthusiasts please don't take advantage of that. good luck "Jeremy (...) (23 years ago, 17-Mar-02, to lugnet.robotics.rcx.legos)
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| | Re: motors are stuck...
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Thanks for the follow-ups. Well, he's still a "friend" - after all he did give me the stuff for free and with no guarantees that it would work. I guess it'll just be a chance to crack open one of these babies! I think the stuff is pretty old, and (...) (23 years ago, 17-Mar-02, to lugnet.robotics.rcx.legos)
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| | Re: motors are stuck...
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You may also be able to return them to Lego for free and get replacements, it depends on how old they are. I would try before you have to buy a new motor, they aren't the cheapest. Andy ----- Original Message ----- From: "Benton Jackson" (...) (23 years ago, 17-Mar-02, to lugnet.robotics.rcx.legos)
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| | Re: motors are stuck...
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Jeremy, The motors that come with Mindstorms are geared internally, and it's probably jammed gears that are causing you woes. Your "friend" gave you some broken motors. I've never taken one apart-- it snaps together in a way that looks easy to break (...) (23 years ago, 17-Mar-02, to lugnet.robotics.rcx.legos)
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| | motors are stuck...
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|
I recently inherited an RCX 1.0, a serial IR tower and a few motors from a gracious friend. After many headaches, I finally got legOS 0.2.5 running on RH 7.1 and am able to compile and DL programs to the RCX. There is one odd thing, however - of the (...) (23 years ago, 17-Mar-02, to lugnet.robotics.rcx.legos)
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| | 3Com HomeConnect camera - very Lego-compatible
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Hey, I just discovered that my 3Com HomeConnect USB camera is extremely Lego-compatible. It's so close I have a feeling it's not an accident. I built a very nice pan-tilt mechanism for it. What fun! Anyway, now I don't feel so bad that I bought the (...) (23 years ago, 17-Mar-02, to lugnet.robotics.rcx, lugnet.robotics.vc)
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| |
| | Re: Spectrum as source of Technic Spares
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|
"Ralph Hempel" <rhempel@bmts.com> wrote in message news:CAEBIOGHPFFJALB...mts.com... (...) (URL) mpSearchCode=SP> (...) ummm, is that US funds or Canadian cause if it's Canadian then those prices are really cheap. my 0.02USD mike "new job" fusion (23 years ago, 16-Mar-02, to lugnet.technic, lugnet.robotics.rcx)
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| | Re: Lego drivers for Labview
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(...) If you mean 'the software' it is sold by Pitsco Lego Dacta... and it's not freeware. I recommend it wherever I can. It's great. Jerry (23 years ago, 17-Mar-02, to lugnet.robotics)
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| | Re: Rechargeables for the RCX
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(...) I use rechargeable alkalines, Rayovac Renewals, to be exact. You will be amazed at how long they last. I do not wait for them to be fully discharged. It turns out that, with 2 sets, I recharge every couple of months. So far, they have not (...) (23 years ago, 17-Mar-02, to lugnet.robotics)
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| | Rechargeables for the RCX
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My RCX is eating batteries, probably because I can't stop playing with it. I want to start using rechargeables. Took a look over the postings on Lugnet, many of which are quite old and using which I think I could have supported any opinion I cared (...) (23 years ago, 16-Mar-02, to lugnet.robotics)
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| | Re: New Book - Core Lego Mindstorms
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|
(...) I have made the necessary modifications to leJOS (there was a clash with the new assert keyword) and then tried the Java SDK 1.4 with a few tests, it worked. What you have to do is use the CVS version and add "-target 1.1" as an option to (...) (23 years ago, 16-Mar-02, to lugnet.robotics)
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| | Re: Running Vision Command on XP
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|
(...) Ted (and all): Please forgive my ignorance, but could you explain or point me to an explanation of how I perform step 6. "Edit and import legovcs.reg into RegEdit" I'm not a computer jock (though I am fairly competant) and am nervous about (...) (23 years ago, 16-Mar-02, to lugnet.robotics.vc)
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| | Lego drivers for Labview
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Howdi, does anybody know where to get the drivers to program the Lego Brick in labview. Freeware please,... Thanx,... Greetings, ErX. (23 years ago, 15-Mar-02, to lugnet.robotics)
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| | Re: New Book - Core Lego Mindstorms
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I assume with the offfical 1.4 release? I have had several problems with the offical release including stability problems, incompatible code (some wierd 1.2 stuff), slow performance, and hanging event threads (they never return from calling the (...) (23 years ago, 16-Mar-02, to lugnet.robotics)
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| | Re: New Book - Programming Lego Mindstorms with Java
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|
Hi Michelle, Yes it was supposed to come out last year - it was delayed but now it's nearly completed. In addition to myself the author list is as follows (to give credit where it's due): Guilio Ferrari, Jamie Waldinger, Soren Hilmer, Jurgen (...) (23 years ago, 15-Mar-02, to lugnet.robotics)
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| | Re: LEGOCAM with Handy Board
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|
The Lego cam can be used as a sensor. See: (URL) Fay THE SHOP (URL) Potter" <jacobdp@earthlink.net> wrote in message news:3C925D84.CB6C47...ink.net... (...) Has (...) in (...) the (...) (23 years ago, 15-Mar-02, to lugnet.robotics)
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| | Re: problem with lnpd...help!?
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|
(...) this must be char test4 = 'a'; I think. Otherwise, you won't sent an 'a' anyway. But I can't imaginge why you want to do this. Michael Ash has shown a way to fiddle the strings into a contigous data area ready to be sent. But why do you want (...) (23 years ago, 15-Mar-02, to lugnet.robotics.rcx.legos)
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| |
| | Re: New Book - Core Lego Mindstorms
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|
Yes, it's 100% compatible with the latest versions of the Java SDK. I use 1.3.1 myself and it works great. There were originally some problems with the SDK 1.4 beta but those have been worked out. (...) (23 years ago, 15-Mar-02, to lugnet.robotics)
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| | 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: LEGOCAM with Handy Board
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|
(...) The Vision Command camera does not talk to the RCX. It's actually a re-packaging of (IIRC) a Logitech QuickCam, with software that runs on the PC, communicating with the RCX. - Jacob (23 years ago, 15-Mar-02, to lugnet.robotics)
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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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| | LEGOCAM with Handy Board
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|
Greetings, I am participating in a graduate project in the Lamar University Computer Science Department, dealing in "Topics in Robotics." We are using the LEGO #3804 Robotics Invention System 2.0, with the Handy Board, Expansion Board, and the (...) (23 years ago, 15-Mar-02, to lugnet.robotics)
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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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| | Re: New Book - Core Lego Mindstorms
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|
In lugnet.announce, Brian Bagnall writes: As some of you know I've been working on a Lego Mindstorms book for Java programmers. The official release date is March 15, 2002 so it seems like a good time to announce it. The intent of this book is to (...) (23 years ago, 15-Mar-02, to lugnet.robotics)
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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: Erroded axles
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|
(...) but (...) the (...) you (...) Right, I came to the same conclusion. They're good enough (except for the null grip) if used on a smooth surface and with not too much tension. When for any reason the links are no more exactly aligned, the force (...) (23 years ago, 15-Mar-02, to lugnet.technic, lugnet.robotics)
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| | Re: anyone got hardware specifications for the RCX?
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|
(URL) (23 years ago, 15-Mar-02, to lugnet.technic, lugnet.robotics)
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| | Re: Running Vision Command on XP
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|
Hi all, Will someone please email me the Vision Command Updater.exe from RIS 2.0? Thanks in advance Chris (23 years ago, 15-Mar-02, to lugnet.robotics.vc)
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| | Re: New Book - Programming Lego Mindstorms with Java
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Dario, I thought your book was supposed to come out last year ,but then you said it was cancelled by the publisher. Why did they decide to cancel it and then renew it? (...) (23 years ago, 15-Mar-02, to lugnet.robotics)
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| | Re: anyone got hardware specifications for the RCX?
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|
(...) Hi Jonathan, Kekoa Proudfoot has a very detailed page about the RCX internals here (URL) it's a large page - there's *lots* of info there! ROSCO (23 years ago, 15-Mar-02, to lugnet.technic, lugnet.robotics)
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| | anyone got hardware specifications for the RCX?
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|
Since there are projects like legos (or whatever its called now) that replace the firmware of the RCX, there must be some hardware documentation out there. What processor does it use? What other hardware is in that box? Memory maps? (23 years ago, 15-Mar-02, to lugnet.technic, lugnet.robotics)
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| | Memory Limitation
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|
-- MIME ATTACHMENTS DISCARDED: 1. Content-Type: multipart/alternative; boundary="----=_Next....F3B73B20" Content-Length: 2642 2. Content-Type: application/x-zip-compressed; name="Voya.zip" Content-Transfer-Encoding: base64 Content-Disposition: (...) (23 years ago, 15-Mar-02, to lugnet.robotics)
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| | Memory Limitation
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-- MIME ATTACHMENTS DISCARDED: 1. Content-Type: multipart/alternative; boundary="----=_Next....3F3C6170" Content-Length: 1767 2. Content-Type: application/x-zip-compressed; name="Voya.zip" Content-Transfer-Encoding: base64 Content-Disposition: (...) (23 years ago, 14-Mar-02, to lugnet.robotics)
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| | A couple more helpful projects...
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I've posted a couple new pages with simple projects to help when working with electronics and an RCX. The links are: (URL) apologies to anyone that thinks they are rather simplistic or childlike, but that is their intent. My son's and I all like (...) (23 years ago, 14-Mar-02, to lugnet.robotics)
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| | dll Error
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Hi, I´m having a problem downloading a problem to the RCX, when a try to download the program, apeear a the messenge "error creating program". Do you any idea what could be causing this problem? Thank You (23 years ago, 14-Mar-02, to lugnet.robotics)
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| | Re: New Book - Core Lego Mindstorms
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(...) Sounds great! Can't wait to get it. Later, Gary (23 years ago, 14-Mar-02, to lugnet.robotics)
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| | Re: NY aqueduct tunnel inspector bot
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I think you'll find most underwater ROV are on a tether....took difficult to control (and lose) without one. Fiber optic cable would suffice with IR. This cable can be had fairly cheaply. I get mine as leftover pieces from FO cable installers for (...) (23 years ago, 14-Mar-02, to lugnet.robotics)
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| | Re: Stair Climber 4x4
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We (LEGO Robotics Group of Ann Arbor) recently had our Stair Climbing event here in Ann Arbor. The 3 bots that competed all had very similar designs to the item you link to. We competed on a 5 step stair case that had a total rise and total run of (...) (23 years ago, 14-Mar-02, to lugnet.robotics)
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| | NY aqueduct tunnel inspector bot
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(URL) found this article talking about remote robotic submersible tunnel inspection very interesting. I recall a Mindstorm tunnel-roof inspector bot that was part of my inspiration to build my own remote sensing bots, such as the LIDARStation: (URL) (...) (23 years ago, 14-Mar-02, to lugnet.robotics)
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| | Re: Erroded axles
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Why not try spray graphite ? It's dry so dust won't stick : ) Robert Seifert <seifrob@hotmail.com> wrote in message news:Gsuz9F.GDE@lugnet.com... (...) axle (...) (23 years ago, 13-Mar-02, to lugnet.technic, lugnet.robotics)
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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: Stair Climber 4x4
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Very nice, I really liked the speed you managed to achive with this guy. A nice touch with the video too. Got me very interested in building something similar. /roppert (...) (23 years ago, 13-Mar-02, to lugnet.robotics)
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| | RE: Stair Climber 4x4
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Cheers, It's actually a very easy design, the java simulation shows how it is all arranged. -----Original Message----- From: Robert Gravsjo [mailto:roppert@roppert.nu] Sent: 13 March 2002 18:41 To: Robert McGlade Cc: lego-robotics@crynwr.com (...) (23 years ago, 13-Mar-02, to lugnet.robotics)
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| | Re: Erroded axles
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(...) The come apart when side-loaded, or when they snag on something (like carpet). They also can come apart when put into too much tension. (...) You can attach small 1xn plates to the links, but the connection isn't very good. You can't count on (...) (23 years ago, 13-Mar-02, to lugnet.technic, lugnet.robotics)
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| | Re: Erroded axles
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I read this in your [fantastic, best LEGO robot book ever] book as well, but don't understand it. The snapping action of the links doesn't open in the direction they would be loaded in use, so how do they come apart? Did you try them in both (...) (23 years ago, 13-Mar-02, to lugnet.technic, lugnet.robotics)
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| | Re: Stair Climber 4x4
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"Nickle, Steven (2511)" <Steven.Nickle@esavio.com> wrote in message news:Gsx86v.8p7@lugnet.com... (...) (URL) (...) thinking about it. does anyone have any mechanisms that i could work on that would completely transfer drive from one output to (...) (23 years ago, 13-Mar-02, to lugnet.robotics, lugnet.technic)
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| | Re: Erroded axles
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"Mario Ferrari" <mario.ferrari@edis.it> wrote in message news:Gsx3AG.HM3@lugnet.com... (...) looking at the links it would seem to me that you could increase the tread over rough terrain by adding grip plates to the bottom. or maybe slip plates (...) (23 years ago, 13-Mar-02, to lugnet.technic, lugnet.robotics)
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| | RE: Stair Climber 4x4
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Not sure that this is of any interest to you but I built a low level climber: it's a lot of fun and fast. Here is the link to some vidoes and a java simulation of the leg co-ordination it's called bi-hex+1, only watching the videos can exaplain it's (...) (23 years ago, 13-Mar-02, to lugnet.robotics)
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| | Re: Re: Erroded axles
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Try Plasti-Dip rubberized coating: (URL) your own "800" number (...) (23 years ago, 13-Mar-02, to lugnet.robotics)
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| | Stair Climber 4x4
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Doing a search on stair climbing robots, I came accross this link: (URL) basic chassis should be buildable with Legos. Could be reasonably quick. Any thoughts? (23 years ago, 13-Mar-02, to lugnet.robotics)
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| | Re: Erroded axles
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(...) for (...) to (...) And also take apart easily when under load, or when your vehicle runs over rough terrain :-( I love their modularity, but they are much less than optimal for all the other aspects. Mario (23 years ago, 13-Mar-02, to lugnet.technic, lugnet.robotics)
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| | Re: Erroded axles
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(...) Didn't you try to glue piece of rubber to the side that is in contact with ground? It should help. (If you aren't LEGO purist, of course - in that case you shouldn't even read it! You are risking serious nightmare. :-))))) have a nice day (...) (23 years ago, 13-Mar-02, to lugnet.technic, lugnet.robotics)
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| | Re: Erroded axles
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(...) Unfortunately they slip well on ground too! Philo (23 years ago, 13-Mar-02, to lugnet.technic, lugnet.robotics)
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| | Re: Erroded axles
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They're still available at Pitsco-Dacta for $7.50 a pack of 36 links, but they probably don't ship overseas. Someone is always selling a couple packs on eBay for $9.99, maybe he'll ship overseas. I just bought 2 packs, and 36 links appears to be a (...) (23 years ago, 13-Mar-02, to lugnet.technic, lugnet.robotics)
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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: Erroded axles
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By the way, i think the worst problem is using that rubber treads. They are either too loos or too tough and make a lot of friction. Is it possible to purchase somewhere several packages of old catterpillar treads? ( I suppose it's #1230 service (...) (23 years ago, 13-Mar-02, to lugnet.technic, lugnet.robotics)
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| | Re: Erroded axles
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(...) Thanks, i surely will, but it can take more than a week. I study too far away from home (and from my LEGO pieces :) of course..) but i will let you know any results. have a nice day Robert (23 years ago, 13-Mar-02, to lugnet.technic, lugnet.robotics)
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| | WinLNP
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Hi, I downloaded the WinLNP and set it up, but i can´t make a communication beetewn the the IR Tower and RCX. Some of you could connect it? Thank you (23 years ago, 12-Mar-02, to lugnet.robotics)
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| | Re: Re: Using Laptop´s IR port
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This is the only program I've found that uses an IrDA port as a trainable remote control: (2 URLs) this helps. Rob ___...___ Get your own "800" number (...) (23 years ago, 12-Mar-02, to lugnet.robotics)
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