 | | *** legOS new name - reminder ***
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What is the better name for legOS? Is it osmOS or brickOS? Make up your mind and send your vote, either for brickOS or for osmOS, with the usual identification phrase, to legOS-namepoll@gmx.de The last day for your vote is Thursday, 18th. Regards, (...) (23 years ago, 14-Jul-02, to lugnet.robotics.rcx.legos)
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| | Re: RCX to RCX communication
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(...) Mark, I was a TA(Teaching Assistant) for a course at Brown University that invovled building robots with the mindstorms kit. Go to the web site: (URL) and click on the link to take you to the normal page. Then go to the "LegOS" section fo the (...) (23 years ago, 14-Jul-02, to lugnet.robotics.rcx.legos)
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| | RCX to RCX communication
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I have studied the sources on the WEB for LNP but have not found any examples of C or C++ code for RCX to RCX communication. I have two RCXs and would like to build something that takes advantage of 6 inputs and 6 outputs. Do you have a sample you (...) (23 years ago, 14-Jul-02, to lugnet.robotics.rcx.legos)
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| | Solicitud de Informacion
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LEGO Estimados Señores: Me es grato dirigirme a ustedes para manifestarles mi enorme interes en recibir información sobre todo lo que tenga que ver con Robotica (accesorios de hardware, software, lenguajes de programación, nuevas tecnologías, (...) (23 years ago, 13-Jul-02, to lugnet.robotics)
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| | RE: Rechargeable batteries and the RCX
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Thanks for the alert, but the batteries don't pose a threat if used properly. Just don't incinerate or eat them. Maybe it was Li-ion batteries I was thinking of that lose their charge sitting dormant... In any event, does anyone have specific and (...) (23 years ago, 13-Jul-02, to lugnet.robotics)
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| | RE: Audio Difficulty with Dacta MS RoboLab 2.5
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The audio on mine doesn't play either. This appears to be a bug in the program that plays the video and audio files. I checked out the CD. The audio files are separate from the video files. They worked just fine when I manually played them. The (...) (23 years ago, 13-Jul-02, to lugnet.robotics)
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| | RE: Rechargeable batteries and the RCX
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Aren't rechargeable alkaline supposed to be better than NiMH? Don't NiMH batteries lose their charge just "sitting around" if not placed in a trickle charger? (...) (23 years ago, 13-Jul-02, to lugnet.robotics)
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| | Audio Difficulty with Dacta MS RoboLab 2.5
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We installed the Dacta MS RoboLab 2.5 on a Win98 desk top machine and found that the audio on the video RCX start up movie would not play. Dacta could offer no explanation. Anyone had this problem and solved it? -- Wayne T. Watson (121.015 Deg. W, (...) (23 years ago, 13-Jul-02, to lugnet.robotics)
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| | Re: Announcing BricxCC release 3.3.5.6
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(...) I wanted to publicly thank Rob Doucette for reporting the Access Violation bug and for helping me track down where it was occurring. I'd never have fixed it without his help. A big thank you also goes to David Schilling for reported the (...) (23 years ago, 13-Jul-02, to lugnet.robotics.rcx, lugnet.robotics.rcx.nqc, lugnet.robotics.scout)
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| | Re: Rechargeable batteries and the RCX -- Firmware error
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One or more of the battery contacts could have lost its springiness. Try bending all the contacts in towards the other side of the compartment (not too far!). Also, the contacts that supply the power from the batteries to the circuit board may be (...) (23 years ago, 13-Jul-02, to lugnet.robotics)
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| | Re: Rechargeable batteries and the RCX
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Thanks for asking this question. I've been meaning to do so myself. One of the books shows a modified RCX using a 9.6v RC battery pack. Another (or possibly the same one) talks about someone who increased the voltage of rechargables by using 5 AA, 1 (...) (23 years ago, 13-Jul-02, to lugnet.robotics)
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| | Re: How do I switch other devices with my RCX.
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(...) Or can't this be done with just one switching device? Thanks in advance! Remko (23 years ago, 13-Jul-02, to lugnet.robotics)
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| | Re: detecting memory leaks
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In case anyone attempts to use the mm_defrag() posted previously... you will need the following update to mm_try_join() //! check for free blocks after this one and join them if possible /* \param ptr pointer to size field of current block \return (...) (23 years ago, 13-Jul-02, to lugnet.robotics.rcx.legos)
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| | Re: detecting memory leaks
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Jason, Excellent points! I like where this is going. "Jason Clark" wrote <snip> (...) See below. (...) then (...) Yes, it uses mm_try_join() --- here it is: //! defragment free blocks /*! use mm_try_join on each free block of memory */ void (...) (23 years ago, 12-Jul-02, to lugnet.robotics.rcx.legos)
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| | RE: Rechargeable batteries and the RCX -- Firmware error
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Our class uses NiMH batteries. Haven't seen any problem... but we do have one problem off and on and I guess that could be related. On one RCX, we do get an error that the firmware needs to be downloaded quite often, and the battery level on the RCX (...) (23 years ago, 12-Jul-02, to lugnet.robotics)
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| | Re: Rechargeable batteries and the RCX
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(...) Definitely use NiMH's. NiCd's are a problem - they only generate 1.2 volts instead of the usual 1.5 of disposable batteries - and I've found that this *sometimes* causes problems with the RCX. I'm not sure exactly what the situations where it (...) (23 years ago, 13-Jul-02, to lugnet.robotics)
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| | Rechargeable batteries and the RCX
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Does anyone have any comments about using rechargeable batteries in the RCX? Has anyone had any bad experiences with this? Can anyone recommend whether NiMH is better or worse than NiCd? Thanks. Laura (23 years ago, 12-Jul-02, to lugnet.robotics)
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| | Re: MIBO Kits, Any interest?
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(...) That would make more sense to me. I have a complete RIS and Jim Sato's book, so 'everything else' would probably be interesting. I think most potential buyers wouldn't balk at the idea of ending up with a few inexpensive pieces that duplicate (...) (23 years ago, 12-Jul-02, to lugnet.robotics)
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| | AFOL Meetup?
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Dunno if any Lego fans out there have heard about this new 'MEETUP' internet service, I went to a meeting that they arranged a couple of weeks ago on a different subject and it was a great success. The idea is that their web site suggests a day and (...) (23 years ago, 13-Jul-02, to lugnet.robotics)
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| | Re: detecting memory leaks
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(...) Please, post. (...) I'm guessing you defrag using mm_try_join()? malloc() uses this to defrag the beginning of the pool until it finds a big enough block (which can then be split again if its too big); Defragging during idle would save this (...) (23 years ago, 12-Jul-02, to lugnet.robotics.rcx.legos)
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| | Announcing BricxCC release 3.3.5.6
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(...) I was updating the website earlier today which may have caused some disruption. The link worked for me a few minutes ago. This is as good a time as any to post about my new release of BricxCC. Version 3.3.5.6 fixes an Access Violation during (...) (23 years ago, 12-Jul-02, to lugnet.robotics.rcx, lugnet.robotics.rcx.nqc, lugnet.robotics.scout)
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| | Re: anyone know how to check free space on RCX?
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(...) Thanks for conducting the test... being 200+ miles away from my RCX this was bugging me :). My sources (gcc-2.95.2) have the same #define... but with the following about 120 lines earlier: /* Make int's 32 bits. */ #define TARGET_INT32 (...) (23 years ago, 12-Jul-02, to lugnet.robotics.rcx.legos)
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| | RE: Gutting an optical mouse - Part I
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(...) Gee, that's too bad. That means there are only three states that can be distinguished. It seems like they could have easily increased the resolution by 1/3, without any cost. (23 years ago, 12-Jul-02, to lugnet.robotics)
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| | Re: anyone know how to check free space on RCX?
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John A. Tamplin, Jason Clark, Jochen Hoenicke and Michael J Ash: Thank you all for addressing these issues! It all make sense after reading the preceeding messages. I appologize for causing confusion. I am glad, however, to get it straight. ??So (...) (23 years ago, 12-Jul-02, to lugnet.robotics.rcx.legos)
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| | detecting memory leaks
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In the thread "anyone know how to check free space on RCX?" the issue of checking for memory leaks was raised. I wanted to mention that I have some code that may help in that area. I wrote a function for the memory manager called mm_defrag() It (...) (23 years ago, 12-Jul-02, to lugnet.robotics.rcx.legos)
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| | RE: Gutting an optical mouse - Part I
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(...) I thought this was an error to, so I spent about an hour triplechecking my findings. Bear in mind that the scroll wheel doesn't need 7.5-degree-per-step accuracy, which is what that extra bit would give. This is a chart of the data I collected (...) (23 years ago, 12-Jul-02, to lugnet.robotics)
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| | Re: MIBO Kits, Any interest?
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(...) ...or at least if you looked at 100 people who might have the desires, abilities and budget to build the beast, you'd see 100 different inventory needs. Some might have one RIS, others two, others one - plus a bunch of ad-hoc parts. I think (...) (23 years ago, 13-Jul-02, to lugnet.robotics)
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| | Re: anyone know how to check free space on RCX?
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(...) The header is ok, but int is 2 bytes = 16 bit. You can check this with this highly optimized program: #include <conio.h> int main(int argc, char *argv[]) { lcd_int( sizeof( int ) ); for(;;) ; return 0; } And in the kernel sources, mm.c says (...) (23 years ago, 12-Jul-02, to lugnet.robotics.rcx.legos)
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| | Re: anyone know how to check free space on RCX?
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(...) This can't be right. I'm about 99% sure that all of the ints I've used with my legOS programs have been 2 bytes. When using LNP to send RCX ints to a PC, for example, you have to use short on the PC end of things to make it all work right. (...) (23 years ago, 12-Jul-02, to lugnet.robotics.rcx.legos)
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| | Re: Gutting an optical mouse - Part I
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(...) It appears to me there is a slight mistake here. According to this, there is no way to distinguish between the first row and the second. I assume the second should be 10, so it would go 00 10 11 01. Steve (23 years ago, 12-Jul-02, to lugnet.robotics)
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| | Re: anyone know how to check free space on RCX?
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(...) My sources (gcc-3.0) say: #define INT_TYPE_SIZE (TARGET_INT32 ? 32 : 16) A short experiment revealed that sizeof(short)=sizeof(int)=2, sizeof(long)=4. So int is normally 16bit. Only with the switch "-mint32" I get 32 bit ints. This is with a (...) (23 years ago, 12-Jul-02, to lugnet.robotics.rcx.legos)
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| | Re: MIBO Kits, Any interest?
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(...) I would think about buying a complete set - all parts included - more than a partial set/kit. I'm not sure how many parts are in a single MIBO to est. costs though. -mark (23 years ago, 12-Jul-02, to lugnet.robotics)
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| | RE: Gutting an optical mouse - Part I
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(...) I agree with you in theory. Unfortunately, I don't have resources in optics and know very little about them (basic physics class stuff). The failure of my test may simply be related to illumination. How sensitive is the chip to reflected (...) (23 years ago, 12-Jul-02, to lugnet.robotics)
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| | Re: MIBO Kits, Any interest?
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The consturction of Mibo also calls for other parts in quantities that are not as common like two (2) 6585 technic gear housings. What might be useful would be to offer all the parts that Mibo requires that are not in 2 mindstorms sets. Otherwise it (...) (23 years ago, 12-Jul-02, to lugnet.robotics)
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| | RE: A Lego robot that plays the ukelele
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Anyone know if there's a movie of this in action? Liz Teacher/Coach CyberStorm Robotics Class and FLL Team Sports for the Mind for Lubbock Homeschoolers (URL) Message----- From: news-gateway@lugnet.com [mailto:news-gateway...net.com]On Behalf Of (...) (23 years ago, 12-Jul-02, to lugnet.robotics)
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| | Question, opinion, help - Claw Hands
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Folks, I'm in a bit of a quandry. Traditionally I don't like "Claw Hands" meaning the kind you see on a Submersable Sub or better know as Pinchers or Grabers. My problem: I'm making a Mid-Sized Technic Fig Scale Robotic Mecha. (4ft.tall biped) I (...) (23 years ago, 12-Jul-02, to lugnet.build.mecha, lugnet.robotics)
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| | Re: anyone know how to check free space on RCX?
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(...) According to config/h8300/h8300.h in the gcc sources, int is 32bit for the h8 cross compiler. I believe the reason mm_free_mem() returns an int is because the memory manager stores the size of each free block as size_t, which is defined in (...) (23 years ago, 12-Jul-02, to lugnet.robotics.rcx.legos)
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| | Re: MIBO Kits, Any interest?
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(...) Good point, I didn't think about that. You'd probably at least have a complete RIS. Would 1 RCX and 3 mini-motors make more sense? -Rob. (...) (23 years ago, 12-Jul-02, to lugnet.robotics)
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| | Bricxcc
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Does anyone know what's up with; (URL) need the latest download, and I can't even get into the site. If anyone has the latest download, please email me privately. Thanks, JB (23 years ago, 12-Jul-02, to lugnet.robotics.rcx)
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| | Re: MIBO Kits, Any interest?
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Most folks who want to build MIBO probably already have at least one RCX. Personally, I have two... I might buy a kit without the RCXs. Issac. ----- Original Message ----- From: "Rob Doucette" <lego@nospam.doucettenet.com> To: (...) (23 years ago, 12-Jul-02, to lugnet.robotics)
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