 | | Re: Brick Constants in NQC/Bricx
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__SCOUT and __RCX behave as you guessed. There are also defines for __CM and __SPY for spybotics and cybermaster targets, respectively. These constants should work for BricxCC, or any other NQC environment since they are defined by the NQC compiler. (...) (23 years ago, 9-Jan-03, to lugnet.robotics)
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| | Re: A Generic Idea
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(...) OK now I'm less hooked on it. :P The common bottleneck and problem seems to be communicating with the RCX. Here's an idea: Celphone Handsfree Jack -> 1200 or 2400 baud Modem -> LEGO serial IR tower -> RCX Would this work, if the link was (...) (23 years ago, 8-Jan-03, to lugnet.robotics)
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| | Re: A Generic Idea
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Yeah, yeah yeah. :D (23 years ago, 8-Jan-03, to lugnet.robotics)
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| | Re: A Generic Idea
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That IS interesting. I don't intend building a robot out of plywood and buying controller boards, that's no challenge :P But it would be nice to adapt the serial link to the RCX and see what, if anything you could do with it! <Waits for Steve to (...) (23 years ago, 8-Jan-03, to lugnet.robotics)
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| | Re: A Generic Idea
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(...) Now there are TV remotes that are computer controlled, so we don't even have to move our opposable thumb? Technology strides ever forward :PPP How would you get the TV remote control to talk to BrickOS or the RCX software though? (...) I don't (...) (23 years ago, 8-Jan-03, to lugnet.robotics)
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| | Re: 8475 Motor Tests
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(...) The limitation on the train controller is the wall wart - not the controller itself. There was discussion on this in .trains a while back. Someone built a tranformer box with about 3A output IIRC, and ran several trains with it through an (...) (23 years ago, 9-Jan-03, to lugnet.technic, lugnet.robotics)
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| | adding power inlet to technic control center
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Before I blindly go in and screw something up because of lack of electronics knowledge, has anybody already tackled this feat? I assume its very easy with a couple of diodes (maybe too easy) to isolate the batteries from the dc input, but I have (...) (23 years ago, 9-Jan-03, to lugnet.robotics, lugnet.technic)
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| | Re: 8475 Motor Tests
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(...) Holy C......... That's quite high (understatement) for a little LEGO motor. Do you think it's possible that the train controller I used in my test didn't produce enough juice? If that's the case, then the motor has a higher maximum stall (...) (23 years ago, 8-Jan-03, to lugnet.technic, lugnet.robotics)
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| | Re: Can't run software
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(...) Matthais, When I go to device manager and look for graphic cards there is no listing. I assume that means I don't have a graphics card and that is probably the real basis of my problem. Would that be right? Bill Lane (23 years ago, 8-Jan-03, to lugnet.robotics.spybotics)
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| | Re: unique Identifer in RCX
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With BrickOS, you could use the host address; which can be changed on the RCX using the view and program buttons. This would limit you to (what?) 8 or 16 RCXs, but that might be a start. // Joe (...) (23 years ago, 8-Jan-03, to lugnet.robotics)
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| | Re: A Generic Idea
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(...) Ah - OK. But other things in the world (like people) are moving around - it's not always going to be possible to stop, capture a static image - and then reliably navigate based on it. I guess there are niches where such a robot could be (...) (23 years ago, 6-Jan-03, to lugnet.robotics)
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| | brickOS with BricxCC
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So far I have heard from two people who have successfully used brickOS with BricxCC. I'm interested in whether anyone else has tried using BricxCC to edit/compile/download programs to brickOS. Currently BricxCC requires that the cygwin bin directory (...) (23 years ago, 8-Jan-03, to lugnet.robotics.rcx.legos)
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| | dll questions
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I'm working on a new release of BricxCC at the moment and I want to better understand the dll utility - specifically the RCX host address and RCX source port options. I think I understand the RCX host address part. Correct me if I'm wrong. Supposing (...) (23 years ago, 8-Jan-03, to lugnet.robotics.rcx.legos)
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| | RE: 8475 Motor Tests
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I don't have a 5292 motor or I would do this test myself, but it would be possible to get a more direct comparison with the 71427 gear motor. The 1700-RPM output could be geared down to 340 RPM at a gear ratio of 1:5 with 8- and 40-tooth gears. Tony (...) (23 years ago, 8-Jan-03, to lugnet.robotics)
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| | Re: 8475 Motor Tests
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Hi Thomas, Interesting informations ! I added a link to this thread in my motor comparison page... Philo www.philohome.com (23 years ago, 8-Jan-03, to lugnet.technic, lugnet.robotics)
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| | Re: 8475 Motor Tests
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Ok, here is an extrapolated result for the short circuit (stalled) test. The current at 9 volts would be 3.6 amps. Since I did not wish to burn up the motor, I checked current readings at both 3 and 6 volts and also measured the DC resistance and (...) (23 years ago, 8-Jan-03, to lugnet.technic, lugnet.robotics)
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| | Re: 8475 Motor Tests
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(...) Well, check this out: (URL) are a few pictures of the internals of the motor. Quite a few gears! (...) Thanks! TJ (23 years ago, 8-Jan-03, to lugnet.technic, lugnet.robotics)
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| | Re: New RCX sensor: Wire guidance sensor
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(...) Hi Gus, This is a very impressive project. Thanks for sharing the information. I tested your program with a similar bot just to see your program in action. It performed flawlessly. Bob Fay (23 years ago, 8-Jan-03, to lugnet.robotics)
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| | RE: A Generic Idea
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(...) If there are USB Logitec camera drivers for PPC (especially for the ball cams), then try those. Many of the Logitec drivers will work fine with the LEGO cam (considering it's a Logitech cam to begin with). Conversely, the LEGO cam drivers work (...) (23 years ago, 8-Jan-03, to lugnet.robotics)
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| | Re: 8475 Motor Tests
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That figure was the normal operation (no load) figure. What concerned me was that it was a factor of almost 20 higher than the gear motors which normally run about 10mA. Of course, it is very easy to overlook the fact that the gear motor is (...) (23 years ago, 8-Jan-03, to lugnet.technic, lugnet.robotics)
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| | Re: A Generic Idea
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Yes, I think the point isn't whether or not the robot has enough oomph to recognize faces or things like that :D The point is that you can do a *lotta* fun stuff with a camera or mike in a robot, if ONLY you could give the RCX a link to something (...) (23 years ago, 7-Jan-03, to lugnet.robotics)
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| | Re: A Generic Idea
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(...) To clarify, I should say that the software with the cam would probably not even install on a PPC, since it doesn't even install on XP... (23 years ago, 7-Jan-03, to lugnet.robotics)
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| | Re: 8475 Motor Tests
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(...) Yes, I did too. Judging from the performance of the RC car, you'd think the motors would be equivalent to perhaps 8, or more, of the geared 9V motors. The buggy can really zip along! There was one other thing about my test. When the 9252 motor (...) (23 years ago, 8-Jan-03, to lugnet.technic, lugnet.robotics)
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| | Re: 8475 Motor Tests
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This is interesting information, thanks TJ. I must say that I got the visual impression that the buggy motors seemed to have more than a mere 2 - 3 times more shaft power output than the gear motors. The little piece of data which would add greatly (...) (23 years ago, 8-Jan-03, to lugnet.technic, lugnet.robotics)
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| | Re: A Generic Idea
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Steve (...) Under anything after Windows 95? Nope. In fact, only Win3.1 programs running under Win95 can do it easily. Win3.1 programs running under Win98 onwards can't talk to the parallel port at all easily. If you must do it, use PortTalk - a (...) (23 years ago, 7-Jan-03, to lugnet.robotics)
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| | RE: user created programs
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(...) I'll jump in here. The two canted receptors at the front do indeed give a basic direction and range finding ability. The IR signal strength follows an inverse-square law. Double the distance from source to sensor and the signal is reduced by a (...) (23 years ago, 8-Jan-03, to lugnet.robotics.spybotics)
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| | Re: A Generic Idea
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You might be interested in the CMUcam. See (URL) CMUcam is a new low-cost, low-power sensor for mobile robots. You can use CMUcam to do many different kinds of on-board, real-time vision processing. Because CMUcam uses a serial port, it can be (...) (23 years ago, 8-Jan-03, to lugnet.robotics)
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| | 8475 Motor Tests
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Last night I performed a few quick tests on the 5292 motors (the new motors from the 8475 Race Buggy set: (URL) to compare them to the standard geared 9V motor ((URL) summary, the 5292 motor (when geared down to match RPM of 71427) has about 2.33 (...) (23 years ago, 8-Jan-03, to lugnet.technic, lugnet.robotics)
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| | Re: A Generic Idea
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To get a PDA to interface to RCX is easy, i am right in thinking that TV remote is the same freqency etc as RCX? If so go to pdawin.com and get TVRemote (URL) i use version 3.1 which can learn commands, and we can display this on the PC and control (...) (23 years ago, 7-Jan-03, to lugnet.robotics)
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| | Re: Brick Constants in NQC/Bricx
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(...) Yes - I don't know about Bricx - but the NQC example programs contain one that says: #ifdef __RCX ...and (more significantly) the system file 'compiler/rcx2.nqh' contains #if __RCX==2 #if defined(__SCOUT) ...and a bunch of other defines (...) (23 years ago, 8-Jan-03, to lugnet.robotics)
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| | Re: A Generic Idea
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(...) Start with arXiv.org. You should also hit each of the CPU makers whom you have interest in and review their Application Notes carefully (Intel has a lot of app notes that are graphics related). You'll want to get all the 'Graphics Gem' code as (...) (23 years ago, 7-Jan-03, to lugnet.robotics)
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| | Re: Brick Constants in NQC/Bricx
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(...) Thanks Brian, but I´m looking for ways to determine the brick at compile time, not at runtime, since the generated code must match the target API. (23 years ago, 8-Jan-03, to lugnet.robotics)
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| | Re: user created programs
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Yes, your new page is good and what we need. But I immediately have a question: It seems there are two pairs of canted receptors, two at front, and two at about mid-board. This implies there is some inherent directional sensing? I assume at least (...) (23 years ago, 8-Jan-03, to lugnet.robotics.spybotics)
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| | Re: A Generic Idea
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(...) I extrapolated your complaints that PDAs have OS's where the c compilers don't have libraries to do the simplest things... : ("You need more than that though. Along with your C compiler, you need a set of libraries that give you access to the (...) (23 years ago, 7-Jan-03, to lugnet.robotics)
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| | Re: A Generic Idea
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Rob Limbaugh wrote: > So, the questions (to me) become: > 1) Does a cordless phone transceiver pair have the ability to handle the data rate of a USB device? The most bandwidth you can get out of a regular analog telephone line is 56Kbaud. (...) (23 years ago, 6-Jan-03, to lugnet.robotics)
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| | Re: Brick Constants in NQC/Bricx
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See (URL) (but don't get your hopes up). (...) (23 years ago, 8-Jan-03, to lugnet.robotics)
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| | Re: A Generic Idea
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(...) Yes - I can control the RCX from my SONY Television remote (which is a programmable one) by 'teaching' it key commands from the Lego Remote - so if your PDA can act like a learning remote - it can drive the RCX and Scout bricks. (...) Yep - (...) (23 years ago, 7-Jan-03, to lugnet.robotics)
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| | Re: unique Identifer in RCX
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I could only find this thread: (URL) which gives a non-authoritative "no". I glanced through Kekoa Proudfoot's librcx ((URL) and found nothing in his rom header file (rom.h). (...) (23 years ago, 8-Jan-03, to lugnet.robotics)
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| | Re: A Generic Idea
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Has anyone any practical experience of what robotic image processing _can_ be done on a single-chip computer such as an RCX, PIC, etc.? Any links to research papers? Peter (23 years ago, 6-Jan-03, to lugnet.robotics)
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| | Re: New RCX sensor: Wire guidance sensor
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(...) I've seen similar things on sale in my local branch of Fry's here in the USA. I wish they'd make a vacuum-cleaner that worked on similar principles. ---...--- Steve Baker ---...--- HomeEmail: <sjbaker1@airmail.net> WorkEmail: (...) (23 years ago, 7-Jan-03, to lugnet.robotics)
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