 | | Re: A Really Cool MOC - Air Powered Air Propelled
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This thing is ABSOLUTELY super cool. Indeed a challenge to beat. Will probebly run a few inches more with the slick tires from set 8422. Hm, also eye-catching color-scheme :-) Klaas (...) (23 years ago, 27-Nov-02, to lugnet.robotics, lugnet.technic)
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| | Re: Helicopter was Re: Newbie has an idea
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(...) You are welcome. (...) I did a fair amount of experimenting on the rotor blades. I also tried the RDS insect wings (though I only had two) and I did have limited success. I couldn't think up a way of mounting them that will keep them at a (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Re: technic turntable mould difference
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(...) I haven't taken pictures yet - from the question I understand he maintains the list of parts for bricklink / lugnet ? What is the emailaddress ? Mark-Jan (23 years ago, 26-Nov-02, to lugnet.robotics, lugnet.technic)
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| | Re: "real" LEGO Hovercraft ? (with/without batteries/RCX "onboard")
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(...) The experiments we've done with the helicopter suggest that you can generate some pretty impressive volumes of fairly slow moving air - but high speed/low volume is hard. The RDS insect wings that we used on our helicopter work really well, (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Re: technic turntable mould difference
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Sent the pictures to Clark Corner yet? Duq "Mark-Jan Bastian" <markjan@xs4all.nl> wrote in message news:H67DIo.84u@lugnet.com... (...) (23 years ago, 26-Nov-02, to lugnet.robotics, lugnet.technic)
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| | technic turntable mould difference
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Hello, I'm building a very solid turntable base, and found a problem with one of the turntables I bought via bricklink. All the turntables I have used to have little dents at the base, also at the side which has the three bottom mounting holes. But, (...) (23 years ago, 26-Nov-02, to lugnet.robotics, lugnet.technic)
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| | RE: "real" LEGO Hovercraft ? (with/without batteries/RCX "onboard")
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Hi Chris, :) (...) I have that set. That was one of the first tests I did when I got it. It's my only ZNAP set. I bought it because of the motor, the flex and those wheel/"turbine". From what I remember, it doesn't work that well. It's too tiny. It (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Polling sensor values with wait_event
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Hello all, Is it true that the wakeup function is only checked once every timeslice and only for the process that has the highest priority and is at the front of the priority chain? For example, a process k is waiting on the wakeup function y wich (...) (23 years ago, 26-Nov-02, to lugnet.robotics.rcx.legos)
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| | RE: Newbie has an idea - Nascar style racing?
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(...) How about blocking the illumination LED and using the LEGO LAMP for illumination? (...) This eliminates one more color/pattern for the RCX to look for, probably a good thing. How would this relate to determining winner of a race? (...) The (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Re: "real" LEGO Hovercraft ? (with/without batteries/RCX "onboard")
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(...) I'd be interested in knowing how this works. The ZNAP green helicopter set (which I got three of last year at $9 each!) had some little round turbine-like parts, basically a ducted fan. Never tried them out to see if they're actually (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | "real" LEGO Hovercraft ? (with/without batteries/RCX "onboard")
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Ok, so we have the 4, 3 and 2 (LegWay :) wheel bots... and the 8, 6, 3, 2, 1(?) leg BOTs. ...but, what about a 0 (zero) Wheel / Leg Bot ? Ok, there's the pseudo-flying bots :)) but, apart from some trials with blimps (helium balloons?) and (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Re: Helicopter was Re: Newbie has an idea
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(...) THe thing we couldn't understand was how you'd managed to make the helicopter fly forwards and backwards. We'd assumed you had some amazingly clever cyclic pitch adjustment in the rotor head (which looks complicated enough to maybe do (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | USB Tower in Linux
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Hi! How can I use the USB Tower in Linux, especially with leJOS? greetings, Raphael (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Re: Newbie has an idea - Nascar style racing?
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Hi Steve, (...) not refill their own cartridges. (...) brick corner during a crash. Here in Italy, Mario Ferrari printed a beautiful (but very expensive) track that we regularly use for our Gran-PRIS competitions. It's 200x250 cm wide with borders (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Re: Another cement mixer......
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(...) I will do. Dennis (23 years ago, 26-Nov-02, to lugnet.technic, lugnet.robotics, lugnet.general, lugnet.modelteam, lugnet.loc.it)
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| | A Really Cool MOC - Air Powered Air Propelled
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Hey fellas, Here's a really cool MOC, literally: (URL) by fellow engine-building fanatic, Paul Krieg, whose creations are amazing to say the least. It's the first of a new class of vehicles - an APAPV for sure. We could organise a competition for (...) (23 years ago, 26-Nov-02, to lugnet.robotics, lugnet.technic) !
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| | Re: compass sensor
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the 2° come from here (URL) this one hasn't been modified to be useable with the RCX I know about the one from hitechnicstuff, but it's not accurate enough: "The heading is calculated about 6 times per second and has an accuracy of approximately 5 (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Re: Another cement mixer......
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(...) Hi Dennis, This model, built in collaboration with my frien Fabio Sali is fully operational as you specified, but naturally, due to the weigh (4/4,2 Kg) there's a problem .. it's very slow. Thank to Fabio suspension setup, and a good downgear (...) (23 years ago, 26-Nov-02, to lugnet.technic, lugnet.robotics, lugnet.general, lugnet.modelteam, lugnet.loc.it)
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| | Re: compass sensor
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(...) I don't know about the two degrees, but Hitechnic has a nice digital compass. 100 levels will give 3.6 degrees per count, assuming a perfect world - no nearby magnetic sources (motors being a good one) and no disturbances in the earth's (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Re: compass sensor
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(...) Look here: (URL) C S Soh CSSoh's Lego Pneumatics (URL) where air is power! (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Re: compass sensor
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(...) Ther is a compassensor here: (URL) I don't know about the accurasy of it. (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Re: Line following algorithms
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(...) Dave Baum's Definitive Guide gives a good treatment for the case of a single light sensor. However, to follow a line as opposed to "edge following" with elegance and ability to negotiate sharp 90-degree bends requires two light sensors as was (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | compass sensor
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Hello! Is there a very accurate (max. +/-2°) compass sensor that can be used with the RCX? THANKS! Raphael (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Re: Page down
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(...) (23 years ago, 26-Nov-02, to lugnet.robotics.rcx.nqc)
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| | Re: Problem with DIY Spybotics SDK...
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Mark, Following your suggestion, I just removed the path information, as regsvr32 is always in a pathed system directory. C:\Program Files\LEGO Software\LEGO Mindstorms SDK\Bin\reg.bat now reads: regsvr32.exe vpbcom.dll instead of: (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Re: Newbie has an idea - Nascar style racing?
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I'm constructing an oval track on a 4X8 sheet of plywood with a different grey tone for the inside and outside of the track. I will experiment with tones and thickness. There will be a "barcode" to indicate upcomming corners, this will act as a (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Re: Newbie has an idea - Nascar style racing?
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(...) does not refill their own cartridges. Paper won't (...) Partially why it is expensive. The fact that it is easily damaged makes maintennance that much more expensive. Not to mention constant replacing of paper track would eat up valuable event (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Re: Helicopter was Re: Newbie has an idea
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Hi Steve and everyone else, I'm working on a Lugnet page with more information on my helicopter but in the mean time, here are the photos: (URL) you can see, I use a low-torque, hi-rpm motor with a non-lego rotor. The rotor, by the way, came from a (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Re: Problem with DIY Spybotics SDK...
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Nope, not the case. I never installed the SDK until I went to do this, and I let it take all the defaults. ----- Original Message ----- From: "Mark Riley" <markril@hotmail.com> To: <lego-robotics@crynwr.com> Sent: Monday, November 25, 2002 6:30 PM (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Re: On LEGO Compressors & Pump Testing
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(...) Or 4 hand pumps, like I used to power my v4 engine: (URL) H Nielsen (23 years ago, 26-Nov-02, to lugnet.robotics, lugnet.technic)
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| | Re: Newbie has an idea - Nascar style racing?
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(...) This makes robots have to depend much more on dead-reckoning. If you are steering (say) 10% too much - then that error will build up without limit. You'd come out of a 90 degree turn with a 9 degree error - but unless you have two light (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Re: Problem with DIY Spybotics SDK...
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I did a little more poking around and found out the reg.bat file in the SDK Bin directory is supposed to register the COM server vpbcom.dll. The batch file assumes the Windows install directory is "\windows\..." which could be bad if you installed (...) (23 years ago, 25-Nov-02, to lugnet.robotics)
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| | Re: Newbie has an idea - Nascar style racing?
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(...) > stay down unless taped, and it could be torn easily with a brick corner during a crash. I guess so - but it's easily repaired and highly reproducible. (...) > and paint are cheap and universally available. They are pretty easy to line up (...) (23 years ago, 25-Nov-02, to lugnet.robotics)
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| | Re: RCX and batteries
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(...) [cut & pasted] (...) from - (...) [here it is] (...) port? (...) current (...) A 4-diode rectifier bridge converts AC to DC (and will sort out polarity problems), but it's not constant voltage DC (it's both halves of the AC sine wave above the (...) (23 years ago, 25-Nov-02, to lugnet.robotics)
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| | Re: Newbie has an idea - Nascar style racing?
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(...) Even two A4 sheets would make for rather tight turns if it's going to fit together like a jigsaw. ---...--- Steve Baker ---...--- HomeEmail: <sjbaker1@airmail.net> WorkEmail: <sjbaker@link.com> HomePage : (URL) : (4 URLs) (23 years ago, 25-Nov-02, to lugnet.robotics)
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| | Re: Problem with DIY Spybotics SDK...
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In case you haven't fixed your problem yet... Make sure you haven't moved or renamed any of the directories created after installing the SDK. Apparently, some COM objects get registered at install time and will fail to load if the directory (...) (23 years ago, 25-Nov-02, to lugnet.robotics)
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| | Re: Newbie has an idea - Nascar style racing?
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(...) ensure the red, green and blue would look like different shades to the Lego light sensor. I think this would be easier to achieve (and therefore more reproducible) with shades of grey. Not that it matters much, calibration wouldn't be that (...) (23 years ago, 25-Nov-02, to lugnet.robotics)
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| | Re: RCX and batteries
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Hi Guys , Just to let you know that the AC Power Adapter that LEGO supplies has an AC output voltage. You can even get 5mm plug and attach it to a 9V battery clip and use a standard 9V battery to power the RCX. It won't last long but it is a way to (...) (23 years ago, 25-Nov-02, to lugnet.robotics)
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| | Re: RCX and batteries
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 (...) I'm not sure, but it does have a voltage regulator, and I've *heard* it works even with AC. (BTW, a rectifier meaning a single diode blocks current going the wrong direction. A 4-diode rectifier (...) (23 years ago, 25-Nov-02, to lugnet.robotics)
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| | BricxCC release 3.3.6.6
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BricxCC version 3.3.6.6 is now available. This release enhances the support for brickOS introduced in the previous release. 1. brickOS programs comprised of multiple files residing in the same directory can now be compiled. See View/Project Manager (...) (23 years ago, 25-Nov-02, to lugnet.robotics, lugnet.robotics.rcx.legos)
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