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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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