 | | 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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