 | | Re: Magnetic Levitator
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(...) The Phototransistor and diode are recessed deep inside the technic bricks, which make very effective lightshields. (...) The object is in the middle, but off of the axis formed by the phototransistor and the diode. the object only partially (...) (24 years ago, 8-Dec-01, to lugnet.robotics)
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| | Re: Bummer!!!
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Other books have covered the varieties of firmwares and OSs for the RIS. The subject matter of my now-postponed LEGO Mindstorms book is in a different direction. pbForth gets all of one paragraph...not a comment on pbForth, just an editorial (...) (24 years ago, 9-Dec-01, to lugnet.robotics)
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| | Re: learning RoboLab (long)
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(...) Miles, thanks for posting that long catalog of available reference material for ROBOLAB. I too have been through the frustrating experience of finding learning resources. ROBOLAB is good software because it is in the spirit of LEGO, where you (...) (24 years ago, 9-Dec-01, to lugnet.robotics.rcx.robolab, lugnet.edu, lugnet.dacta, lugnet.books, lugnet.robotics.scout, lugnet.robotics.vll)
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| | learning RoboLab (long)
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The following learning resources apply to Lego Dacta's RoboLab "Mindstorms for Schools" programming software, version 2.5 where indicated, otherwise, earlier versions: 1. Dacta RoboLab Teacher's Guides Printed paper books. Detailed instructions for (...) (24 years ago, 8-Dec-01, to lugnet.robotics.rcx.robolab, lugnet.edu, lugnet.dacta, lugnet.books, lugnet.robotics.scout, lugnet.robotics.vll)
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| | Re: Name of Robolab RCX2 Firmware file?
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(...) Those sound like they might be firmware files. NQC expects the firmware to be in S-record format. Do all the lines begin with an upper case S and then have lots of hex digits? If so, they are probably firmware files. I'm not sure why there are (...) (24 years ago, 8-Dec-01, to lugnet.robotics)
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| | Re: Bummer!!!
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(...) I've just recently joined the list and started to mess with Lego Mindstorms, so I hope this comment isn't redundant. I'm really unhappy with the attitude towards Forth in the O'Reilly book, I hope you will portray it in a more favorable light. (...) (24 years ago, 8-Dec-01, to lugnet.robotics)
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| | Re: Bummer!!!
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Sorry you were disappointed. I decided to postpone the book for a year or so to wait for better market conditions. Far too many LEGO Mindstorms books have been released recently for mine to get any decent shelf-space or mind-share. I want to let the (...) (24 years ago, 8-Dec-01, to lugnet.robotics)
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| | Re: Name of Robolab RCX2 Firmware file?
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Hi Brian, the name of this file is "firm0328.lgo". If you don't find it on your computer, download the Lego SDK (...) (24 years ago, 8-Dec-01, to lugnet.robotics)
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| | Name of Robolab RCX2 Firmware file?
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Hi, Does anyone know the name of the RCX2 firmware file that came with Robolab 2.5? There are two files called firmware.txt and firmware325.txt. Both are dated Y2K. Is one of these the RCX2 firmware? I'm moving from Robolab to NQC, and I want to be (...) (24 years ago, 8-Dec-01, to lugnet.robotics)
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| | Scout SDK missing from mindstorms.lego.com?
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Hi, Plese forgive a newbie here. I just tried to get the Scout SDK from the Lego website but their ASP pages report various errors and I can't get the files. Would someone be kind enough to help me obtain the software? Thanks in advance! Chris (...) (24 years ago, 8-Dec-01, to lugnet.robotics.scout, lugnet.robotics)
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| | USB, Windows, legOS
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Attention everyone trying or have gotten the USB IR tower to work under windows running legOS. I have some patches from at certain Jin Sato that are supposed to allow one to upload programs and the legOS kernel via the USB IR tower. First off I am (...) (24 years ago, 7-Dec-01, to lugnet.robotics.rcx.legos)
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| | University use of JCX Java and Technics/Mindstorms hardware
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I'm on the way up to the U of Utah for the final presentations today. Some are pretty fascinating - check out the team project links at (URL) the Mindbrew golf bot (video) and the Robotechtronix voice control system... Complete documentation, (...) (24 years ago, 7-Dec-01, to lugnet.robotics)
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| | Re: rcx power circuit
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(...) It's the delay you get when changing batteries so you don't lose your firmware... (the 1000uF Cap) the ring should be for filtering power. Dean (24 years ago, 7-Dec-01, to lugnet.robotics)
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| | Re: rcx power circuit
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On Thu, 2001-12-06 at 12:15, Mathias Uhr wrote: <snip> (...) This is more likely to act as a buffer to prevent the voltage from sagging on the CPU when you're running the motors. This is always a pronlem when motors and CPU are run off a common (...) (24 years ago, 7-Dec-01, to lugnet.robotics)
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| | Re: Rotation sensor woes
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I've had the same problem. I guess there's too much error tolerance on the production line. -- Greg Frazier (...) (24 years ago, 7-Dec-01, to lugnet.robotics)
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| | RE: Magnetic Levitator
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We tried using the Handyboard (which is faster than RCX) and it could not do it. I think the RCX is not fast enough for UNSATBLE control systems such as magnetic levitation, etc. A while back, I proposed the inverted pendulum problem as a challenge, (...) (24 years ago, 7-Dec-01, to lugnet.robotics)
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| | Re: Magnetic Levitator
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(...) I think that it would be possible to use an RCX. I used four op amps in my circuit; the first amplifies the signal coming from the phototransistor, the second differentiates the signal, the third takes the difference of the proportional and (...) (24 years ago, 7-Dec-01, to lugnet.build, lugnet.general, lugnet.robotics)
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| | Re: rcx power circuit
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(...) Did you check it with a load (such as the RCX) on it? Some power supplies can only regulate the voltage when there is some kind of load. If you just measure the voltage with nothing except a meter on the end, it may well be insanely high but (...) (24 years ago, 7-Dec-01, to lugnet.robotics)
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| | Re: Rotation sensor woes
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"Steve Baker" <lego-robotics@crynwr.com> wrote in message news:3C0F6DC6.704B7A...ail.net... (...) [snip] (...) [snip] Thanks for the advice Steve and everyone else. For now it'll be attached using axles and 1x2 bricks with axle holes to give me some (...) (24 years ago, 7-Dec-01, to lugnet.robotics)
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| | Re: rcx 2.0 without power plug !?
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(...) Actually, it was removed in 1.5 - although *some* 1.0 RCX's were shipped in RIS 1.5 sets. That's how I got my RCX 1.0 so I know that's true. (...) No - not unless it's a *VERY* early 1.5. (...) Yes - you definitely can. So far, all versions of (...) (24 years ago, 7-Dec-01, to lugnet.robotics)
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