 | | Re: Battery use
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|
Yes, but it won't last long. The HB's electronics draw around 20 - 40 mA. the lifetime of an alkaline 9v is approx 1 Amp hour. So that give you 25 - 50 hours of run time. In practice, you'd get less, 'cause the 1 AH rating assumes a much slower (...) (24 years ago, 19-Dec-01, to lugnet.robotics.handyboard)
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| | Re: Shuting up the RCX
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|
(...) Well, you could hack the LEGO firmware. Not easy but possible. Jürgen (24 years ago, 19-Dec-01, to lugnet.robotics.rcx, lugnet.robotics.rcx.nqc)
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| | Battery use
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If I use a separate battery supply for the motor outputs, will a single 9v battery provide sufficient power for the rest of the Handyboard instead of the 8 AA cells (9.6V)? (24 years ago, 19-Dec-01, to lugnet.robotics.handyboard)
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| | Re: Home-made One-way valve
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|
Alternativeley you can continue using the valve with the old style pump and have an air tank (if you own two) on each side i.e. one that holds the vaccum and one that holds the pressureized air. but... theres still the problem of flipping the valve (...) (24 years ago, 19-Dec-01, to lugnet.robotics, lugnet.technic, lugnet.build)
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| | Re: Home-made One-way valve
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(...) Yes, you can store vacuum. But all you can store is 1 atmosphere. So a little blue tank with 4 atmospheres has a lot more storage than one with negative 1 atmosphere! Also, it's real hard to make vacuum, in the real world. I once built a (...) (24 years ago, 18-Dec-01, to lugnet.robotics)
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| | Re: Shuting up the RCX
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(...) Right, that's an option but perhaps not the ideal for me since I'm working with NQC. Any other? Thanks anyway Jürgen. (24 years ago, 18-Dec-01, to lugnet.robotics.rcx, lugnet.robotics.rcx.nqc)
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| | Re: Home-made One-way valve
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(...) Also, the external pressure is usually fairly fixed (atmospheric pressure) and there's a lower limit to the internal pressure (absolute vacuum), but no intrinsic upper limit (though it is limited by the strength of the tank). Therefore a (...) (24 years ago, 18-Dec-01, to lugnet.robotics, lugnet.technic)
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| | Re: How to get interval of time
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(...) correct? Yep, that's how I do it & it seems to work. ROSCO (24 years ago, 18-Dec-01, to lugnet.robotics.rcx.legos)
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| |
| | Site Redesign
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Hi all. I have finally gotten around to yet another site re-design. I have added some new areas including pics of my climber robot, and a reviews section. link - www.astolfo.com/lego Dave (24 years ago, 18-Dec-01, to lugnet.robotics)
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| | Re: Home-made One-way valve
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|
Instead of pushing a pneumatic switch back and forth, you can use the old non-return valve: (URL) the pump to the middle hole, connect the air tank to the left hole and leave the right hole free. The old style pump will pull air out of the tank and (...) (24 years ago, 18-Dec-01, to lugnet.robotics, lugnet.technic, lugnet.build)
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| | Re: Home-made One-way valve
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(...) matter, (...) Well said, Steve, I agree. A tank is simply a container whose inner gas (air in this case) can have a different pressure from the one outside. This pressure can be higher or lower than the one of the air in the environment, but (...) (24 years ago, 18-Dec-01, to lugnet.robotics)
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| | Re: Home-made One-way valve
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(...) ...the whole concept of "storing vacuum" is a little disturbing. :-) Perhaps "lowering the air pressure" in the tank would be a little more reasonable! ---...--- Steve Baker ---...--- Mail : <sjbaker1@airmail.net> WorkMail: <sjbaker@link.com> (...) (24 years ago, 18-Dec-01, to lugnet.robotics)
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| |
| | Re: Installation Problem: RIS2.0 USB on Fast Athlon ??????
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|
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, Just a few questions. What type processor is it? (Pentium III or Pentium IV) What OS? The reason being is, there are some minor issues with Win98 and Pentium IV processors, as well as having some (...) (24 years ago, 18-Dec-01, to lugnet.robotics)
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| |
| | Re: Home-made One-way valve
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|
(...) you can store the vacuum in the LEGO tank or any other tank for that matter, but the technic pumps will not work for this unless you do a bit of work to figure this out: if you hook an old style pump straight to a valve (dont know which pin (...) (24 years ago, 18-Dec-01, to lugnet.robotics, lugnet.technic, lugnet.build)
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| | Re: Home-made One-way valve
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(...) made (...) hose (...) You store it the same way. A tank can store a vacuum as well as pressure - it's basically equivalent to increasing the pressure outside. This principal was used on many steam trains (and some diesels?), which use vacuum (...) (24 years ago, 18-Dec-01, to lugnet.robotics, lugnet.technic, lugnet.build)
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| | Re: Home-made One-way valve
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(...) Alas it doesn't work that way at all. The air tanks will definitely not work with the old style pneumatics whatever way you try to incorporate them in (yep, I spent a good hour checking). Now as I understand it, the air tank is meant to store (...) (24 years ago, 18-Dec-01, to lugnet.robotics, lugnet.technic, lugnet.build)
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| |
| | How to get interval of time
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|
In NQC, I can use ClearTimer(0) and Timer(0) to get interval of time, how can I do it in legOS? I used t1 = sys_time, then t2 = sys_time, so interval = t2 - t1, is it correct? Zhengrong (24 years ago, 18-Dec-01, to lugnet.robotics.rcx.legos)
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| | Robot Controller 1.2b1
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|
I've posted a new version of Robot Controller ---the ideal companion to NQC for Mac OS X users. This version fixes a couple of bugs. Download from: (URL) the way, has anyone tried it? It would be nice to get some feedback! Barney. (24 years ago, 17-Dec-01, to lugnet.robotics.rcx.nqc)
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| | Re: RCX remote control and the use of PICs
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|
Hi Stef, A great project, well designed, and very well documented and presented. Thanks! I'll probably make one of these pretty soon. Nice work Michael (...) (24 years ago, 17-Dec-01, to lugnet.robotics, lugnet.robotics.rcx, lugnet.robotics.rcx.nqc)
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| | RCX remote control and the use of PICs
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|
hi All, Inspired by some applications of the 16F84 PIC, we came up with the idea to make a IR-module, which is capable of doing all the InfraRed tasks we could imagine with the RCX. Well it hasn't come so far, but we have build a RCX IR-remote (...) (24 years ago, 17-Dec-01, to lugnet.robotics, lugnet.robotics.rcx, lugnet.robotics.rcx.nqc)
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| |
| | Re: How to read the touch sensors on the Scout in NQC?
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|
I was using my scout this past weekend as a coinbox detector to launch a mono rail. The touch sensors work exactly as Dave suggests. You can also just do the following: until(SENSOR_1); Waits until it's touched. until(!SENSOR_1); Waits until the (...) (24 years ago, 17-Dec-01, to lugnet.robotics.rcx.nqc, lugnet.robotics.scout)
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| |
| | Re: Injection-Molding Factory
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|
(...) I will try to answer your questions here: Andrew- ROBOLAB is a great program. NQC is also a great program. I have used them both. It depends on which you prefer. In my case, I do not use (say) C++ elsewhere and I find ROBOLAB easier to (...) (24 years ago, 17-Dec-01, to lugnet.robotics)
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| | Re: Shuting up the RCX
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|
(...) Change the firmware. Maybe we should make this a selling point of Lejos :-) (at the moment it beep too, I think) Jürgen (24 years ago, 17-Dec-01, to lugnet.robotics.rcx)
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| |
| | Re: How to read the touch sensors on the Scout in NQC?
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(...) That is what I thought, but it will determine if the touch sensor is pressed. (...) Dunno, I'll try. Then again, if !=255 works... (...) If it were not for Perl I'd never write a line of code ^_^ (24 years ago, 17-Dec-01, to lugnet.robotics.rcx.nqc, lugnet.robotics.scout)
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| | Re: Home-made One-way valve
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|
(...) Difficult to regulate though - as the same pump affects both. When the high pressure one is full & low pressure one needs pumping, it'll keep adding pressure to both (one outside, one inside). You'd have to have some kind of pressure release (...) (24 years ago, 17-Dec-01, to lugnet.robotics, lugnet.technic, lugnet.build)
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| |
| | Re: Three kinds of motors?
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|
(...) All three work with Mindstorms. * The micromotor is low in power and low in speed - you'd really only want to use it where space is at a premium. The micromotor is just 2x2 studs and two bricks high! * The motor that comes with RIS and RDS is (...) (24 years ago, 17-Dec-01, to lugnet.robotics)
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| |
| | Three kinds of motors?
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|
Looking at brickbay for an extra motor for mindstorms i found three different kinds of motor: - Technic motor (not the one it came with RIS) - Technic Mini-motor (RIS one) - Technic Micromotor (?) Can someone explain the differences, and most (...) (24 years ago, 17-Dec-01, to lugnet.robotics)
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| | Shuting up the RCX
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|
Hi all. Just a simple question, does anybody know if there is anyway to stop rcx beeping everytime i turn it on or off. It is terribly annoying at 2:00 in the morning :-) Thank Francis (24 years ago, 17-Dec-01, to lugnet.robotics.rcx)
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| | Re: How to read the touch sensors on the Scout in NQC?
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|
This program turns on motor A and leaves it running until a touch sensor attached to input 1 is pressed, then it turns off the motor and plays a sound: task main() { On(OUT_A); until(SENSOR_1 == 1); Off(OUT_A); PlaySound(SOUND_UP); } Dave (...) (24 years ago, 16-Dec-01, to lugnet.robotics.rcx.nqc, lugnet.robotics.scout)
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| | Re: How to read the touch sensors on the Scout in NQC?
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|
Hi Chris, (...) this is a bit crazy, unless your sensor value is a bit pattern. (...) This is sensible, but are you sure it's ok to use equality and not inequalities like SensorValueRaw(1) < 240? (...) but it's equivalent, also in C, where & is (...) (24 years ago, 16-Dec-01, to lugnet.robotics.rcx.nqc, lugnet.robotics.scout)
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| | Re: Home-made One-way valve
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(...) stuff. You say it is not possible to use an air tank in the old style circuit, but would it work with two air tanks, one on the high pressure hose and the other on the vaccuum hose, between the pneumatic "diode" and valve? Jennifer (24 years ago, 16-Dec-01, to lugnet.robotics, lugnet.technic, lugnet.build)
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| | Re: How to read the touch sensors on the Scout in NQC?
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I've sort of solved my problem, but not in a way which really makes total sense. Both of the below fragments work as expectd: #1 if ((SensorValueRaw(1) & SensorValueRaw(0)) != 255) #2 if ((SensorValueRaw(1) != 255) || (SensorValueRaw(0) != 255)) (...) (24 years ago, 16-Dec-01, to lugnet.robotics.rcx.nqc, lugnet.robotics.scout)
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| | How to read the touch sensors on the Scout in NQC?
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All, I'm feeling pretty stupid right about now. I've read the NQC docs, looked in the newsgroups, books, etc, but I can't seem to figure out how to read the touch sensors on my Scout. I want to implement a bumper checking task but no matter how I (...) (24 years ago, 16-Dec-01, to lugnet.robotics.rcx.nqc, lugnet.robotics.scout)
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| | Re: About SensorValueRaw(SENSOR_3) in Scout
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Zhengrong, I'm sure you figured this out by now, but I just got it last night so here is a task which reads the light sensor and outputs a sound based on the raw reading. task drone() { CalibrateSensor(); while (shut_up==0) { int b = (...) (24 years ago, 16-Dec-01, to lugnet.robotics.scout)
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| |
| | Re: MIDI to NQC/RIS2.0 translator "Midi2LSC"
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|
Makino-san, I'm gald you did this because you just saved me the trouble of doing it myself!!! Thanks, Chris Barker (...) (24 years ago, 16-Dec-01, to lugnet.robotics, lugnet.robotics.rcx, lugnet.robotics.rcx.nqc)
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| | Installation Problem: RIS2.0 USB on Fast Athlon ??????
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|
Anyone heard of this?? Getting desparate!! I have installed RIS2.0 on about 12 machines of various types at the local school, and on my wife's IBM laptop: no problems. I recently built a new machine. Fast (1.4G) AMD Athlon, 512M, ASUS motherboard. I (...) (24 years ago, 16-Dec-01, to lugnet.robotics)
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| | Home-made One-way valve
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|
For those who are willing to dismember their Legos, here's how to make your own one-way valve from the hand pump: (URL) designed by Christophe Masclet from France. To be sure, Chris has some more home-made pneumatics stuff coming up. Btw, the (...) (24 years ago, 16-Dec-99, to lugnet.robotics, lugnet.technic, lugnet.build)
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| |
| | Re: legOS
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|
Luis Villa wrote a howto for legOS. (URL) is a legOS list at lugnet. Andy ----- Original Message ----- From: "nanobapt" <nanobapt@nordnet.fr> To: <lego-robotics@crynwr.com> Sent: Friday, December 14, 2001 2:38 PM Subject: legOS (...) (24 years ago, 15-Dec-01, to lugnet.robotics)
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| |
| | Pictures from Mindfest in Texas
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|
almost 4 months late, but who is counting? Pictures of spin-art machines from Mindfest in Forth Worth: (URL) Erwin (URL) (24 years ago, 15-Dec-01, to lugnet.robotics.rcx)
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| |
| | Re: learning RoboLab (long)
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|
(...) I haven't seen this but I imagine that it is similar to the Control Lab version, only taking advantage of the multi-processing capability of the RCX. At least that was my $0.02 during the brainstorming session for this packet. :) (...) If this (...) (24 years ago, 15-Dec-01, to lugnet.robotics.rcx.robolab, lugnet.edu, lugnet.dacta, lugnet.books, lugnet.robotics.scout, lugnet.robotics.vll)
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| |
| | Re: Injection-Molding Factory
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|
Great job! The fiber optics are just super in the movie. -- Bob Fay THE SHOP (URL) Kalpin" <jdkalpin@sympatico.ca> wrote in message news:GoCoIG.L0o@lugnet.com... (...) Molding (...) (24 years ago, 14-Dec-01, to lugnet.robotics)
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| | Re: Injection-Molding Factory
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|
Oh, that's cool! I worked with Injection molding machines as part of my college degree, and worked a few jobs with IM machines--killer job! -Scott (...) (24 years ago, 14-Dec-01, to lugnet.robotics)
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| |
| | Re: Forced to use IR Tower?
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|
(...) built into your (...) this is not (...) You understood me correctly. <snip> :-( (24 years ago, 13-Dec-01, to lugnet.robotics.rcx)
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| | Re: I'm not into robotics myself but........
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|
[snip] (...) The software sounds like an interesting project, but I'd have to know how the hardware works and I'm not sure I could even do it. Keep us updated if you decided to build it. (24 years ago, 14-Dec-01, to lugnet.robotics)
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| | legOS
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|
Did some help me for an introduction to legOS ??no howto please ... nanobapt (24 years ago, 14-Dec-01, to lugnet.robotics)
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| | Re: Expansion sets questions
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|
(...) One thing that's thrown me in the past is that the big blue brick and the big yellow brick (The Scout and RCX respectively) are not quite the same height and have totally different mounting holes. Whilst it's generally possible to adapt Scout (...) (24 years ago, 14-Dec-01, to lugnet.robotics)
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| | Injection-Molding Factory
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|
My 0.00000250 Ton LEGO Injection-Molding Factory can be seen at (URL) Navigate to the section: "Inj. Molding Factory". It consists of a Mold Press, with a motorized screw, barrel heaters, a pneumatic ram; also a 4-cavity mold with a manifold heater (...) (24 years ago, 14-Dec-01, to lugnet.robotics)
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| | Re: Expansion sets questions
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|
Greetings, Julie! IMHO you're perfectly safe in putting them under the tree! To be honest, "RIS required" seems pretty far-fetched of LEGO... I believe the software on the CDROM only provides building instructions (and may integrate with RIS is some (...) (24 years ago, 14-Dec-01, to lugnet.robotics)
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| | RE: Expansion sets questions
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|
He can of course use the regular old lego parts from the kit to build things (robotic or otherwise). As far as the Mindstorm specific stuff he will probably find that less useful with the Scout. DISCLAIMER: I don't remember the exact part list for (...) (24 years ago, 14-Dec-01, to lugnet.robotics)
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| | Expansion sets questions
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|
Feeling quite ignorant here...last year I bought my son 9735 Robotics Discovery Set for Christmas. This year, since I just can't let cheap Lego sit on a shelf ;-) I picked up 9730 RoboSports,9732 Extreme Creatures and 9736 Exploration Mars. Those (...) (24 years ago, 14-Dec-01, to lugnet.robotics)
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| | Re: Trigonometry and NQC
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|
Thank you for these posts! This idea of creating a table of arctangents is just what I need. I'll let everyone know how it works after I redesign the racer. (The prototype, designed for speed, experienced a significant mechanical shock when it (...) (24 years ago, 14-Dec-01, to lugnet.robotics.rcx.nqc)
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| |
| | Re: I'm not into robotics myself but........
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|
(...) That's right, its a tower, three bricks wide. The bricks are rectangular, three to a layer, each layer is orientated 90 degrees to the one before. (...) It's not really like the tower's of hanoi as the bricks you remove have other bricks (...) (24 years ago, 14-Dec-01, to lugnet.robotics)
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| |
| | Re: E-Zine for LEGO Robotics
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|
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, I would be very interested. Let me know if you need help. :) Q (...) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see (URL) PGP SIGNATURE----- (24 years ago, 14-Dec-01, to lugnet.robotics)
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| |
| | Re: I'm not into robotics myself but........
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|
"Steven Lane" <steveroblane@aol.com> wrote in message news:GoBD4y.F5t@lugnet.com... (...) could (...) required (...) in (...) I (...) and (...) That is such a clever idea. Wow... I love it! I can't quite remember how to play Jenga. Do the players (...) (24 years ago, 14-Dec-01, to lugnet.robotics)
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| | I'm not into robotics myself but........
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|
Wouldn't it be cool if someone built a robot (Lego or otherwise) that could play Jenga. It would need sensetive devices to determine the force required to withdraw a block. It would then have to build up a model of the tower in memory to enable it (...) (24 years ago, 14-Dec-01, to lugnet.robotics)
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| | Re: Trigonometry and NQC
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|
Hi Richard, No, NQC does not implement any of the trig functions. However, you can do it yourself. The idea is to use a second order polynomial to approximate the sine function. You can get pretty good accuracy (within about 5%) if you break up the (...) (24 years ago, 12-Dec-01, to lugnet.robotics.rcx.nqc)
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| |
| | Re: Robot Controller
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|
I've posted a new version of Robot Controller ---the ideal companion to NQC for Mac OS X users--- with improved error handling. Also a better web page explaining how to use it. Download from: (URL) the way, has anyone tried it? It would be nice to (...) (24 years ago, 13-Dec-01, to lugnet.robotics.rcx)
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| |
| | Re: Vision Command / Windows 2000
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|
Greets, Dave Could you share with me where you picked up your VC for $30 Cdn? Much thanks! Cheers, Carl Jagt (...) (24 years ago, 13-Dec-01, to lugnet.robotics)
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| |
| | Re: E-Zine for LEGO Robotics
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|
(...) Sound like a great idea and would get a lot of "users"(if it´s free!). It would demand quite an effort, especially for one person, but if you think it´s worth the time I believe it will be a succés! Perhaps I and others could contribute with (...) (24 years ago, 13-Dec-01, to lugnet.robotics)
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| |
| | Re: Vision Command / Windows 2000
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|
OOPS! Sorry bout that. Did not realize that there is a dedicated NG to VC. Dave (24 years ago, 13-Dec-01, to lugnet.robotics)
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| | Vision Command / Windows 2000
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|
This may have already been addressed at some point. Could not pass up on a good deal and picked up the Vision Command for $30 CAD. I had read on this NG before that there may have been issues with how this camera worked under Win2K and as a (...) (24 years ago, 13-Dec-01, to lugnet.robotics)
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| |
| | Hampton Roads Mindstorms(tm) Users Group
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|
We've finally gotten it together! Here is a link to information about the first meeting, to be held January 26 in Norfolk, Virginia! (URL) club will feature design challenges, discussion groups, MOC displays, and in-meeting building! See you there! (24 years ago, 13-Dec-01, to lugnet.loc.us.va.nor, lugnet.loc.us.va.new, lugnet.robotics.events, lugnet.robotics)
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| |
| | Re: E-Zine for LEGO Robotics
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|
"Don Wilcher" <mrdon219@aol.com> wrote in message news:GoA9FH.J74@lugnet.com... (...) Robotics? (...) interfacing, (...) robots. The (...) novice, (...) If (...) Free (I'm in) or paid subscription (I'm out)? -Rob Doucette. (24 years ago, 13-Dec-01, to lugnet.robotics)
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| |
| | Re: E-Zine for LEGO Robotics
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|
Sure! Thanks for your efforts. You're pretty much assured that a Mindstormer has web access. No doubt there will be a good audience for the e-zine. One thing that I've missed since the Lego Mindstorms web site quit doing them are the challenges. (...) (24 years ago, 13-Dec-01, to lugnet.robotics)
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| |
| | E-Zine for LEGO Robotics
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|
Hi Everyone, I was wondering if anyone would be interested in an E-Zine on LEGO Robotics? This publication would have techniques on hardware and software interfacing, using MLCAD, design and programming methods for building Mindstorms robots. The (...) (24 years ago, 13-Dec-01, to lugnet.robotics)
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| |
| | Re: marble rail
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|
Philo, Thanks for your post! I've uploaded 2 videos (URL) the quality isn't what I'd like but It's all I got for know. the newer movie is me not demonstrating anything too usefull and the base is not completed. As far as programing goes I still have (...) (24 years ago, 13-Dec-01, to lugnet.robotics)
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| | Re: Trigonometry and NQC
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|
(...) Hi Rich, Have a look at (URL) where you can find various tips around trig-functions under the restriction of integer values. Claude (24 years ago, 13-Dec-01, to lugnet.robotics.rcx.nqc)
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| |
| | Re: source of solar panels for Lego robots?
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|
"Patrick Hui" <lego-robotics@crynwr.com> wrote in message news:00f001c1829f$d8...cb@huip... (...) it (...) try loking at the solar panels at www.solarbotics.com, i've been using one for the last two years to power an automatic watering system at my (...) (24 years ago, 13-Dec-01, to lugnet.robotics)
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| | Re: Trigonometry and NQC
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|
(...) Hi Rich, there are no trig functions, because there's no float. I had the same problem and was able to approximate these values. I created two tables with the necessary values. The first table includes the values of the tangens of a angle. (...) (24 years ago, 13-Dec-01, to lugnet.robotics.rcx.nqc)
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| |
| | Re: Mario's new book...
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|
(...) really good book. There are a couple of minor errors (one place where he confuses millimeters and centimeters and a couple where he confuses the diameter of a circle with it's circumference) - but nothing serious. Some of the example models (...) (24 years ago, 13-Dec-01, to lugnet.robotics)
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| |
| | Re: Electro-magnets
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|
Another simple source is a 12 volt electro-magnetic clutch. These are available on the surplus market, with typical price around $5 US. - pete. (...) (24 years ago, 12-Dec-01, to lugnet.robotics)
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| |
| | Re: Mario's new book...
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|
(...) A quick link to the publisher's site: (URL) (24 years ago, 12-Dec-01, to lugnet.robotics)
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| | Trigonometry and NQC
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|
Hi! I'm working on a project where a robot needs to travel a right triangle with unkown side lengths. Basically, the robot starts at a point in a room, travels perpendicularly toward a wall, turns 90 degrees left when it hits, and when it gets to (...) (24 years ago, 12-Dec-01, to lugnet.robotics.rcx.nqc)
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| |
| | Re: Forced to use IR Tower?
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|
(...) If I understand you correctly, you wish to use the IR port built into your laptop instead of the IR tower. To the best of my knowledge this is not possible. John Hansen (24 years ago, 12-Dec-01, to lugnet.robotics.rcx)
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| | Forced to use IR Tower?
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|
Hi all, sorry if off-topic, but perhaps anybody knows if there is anyway to communicate with RCX through my laptop ir port. Actually I connect with my Palm through COM4, but when I set Bricxcc to this port says can't find robot. Thanks Francis (24 years ago, 12-Dec-01, to lugnet.robotics.rcx)
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| | Kill / reset / power switch for RCX
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|
I manage to semi-regularly crash LegOS (usually thanks to wandering pointers) to the point where a firmware reload is required and the reset button combination doesn't respond. In order to save myself popping the batteries out every time, I decided (...) (24 years ago, 12-Dec-01, to lugnet.robotics)
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| | Re: Request for new P-code.s19
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Dan, I am also interested in obtaining the different flavors of the p-code floating around on the net. In my case I would like to also get one for an 20x4 LCD screen size. If there are any sites with them available or ones that might have a (...) (24 years ago, 12-Dec-01, to lugnet.robotics.handyboard)
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| | Re: Electro-magnets
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In message <145.625b6f1.2947e682@aol.com>, Styxrocks@aol.com writes (...) I was going to experiment with electromagnet cranes, like the ones you see at junk yards. I will try your suggestion (when I've finished my current project). I will also try (...) (24 years ago, 12-Dec-01, to lugnet.robotics)
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| | Re: marble rail
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Nice job, Chris! much more impressive than my seesaw... ((URL) you coordinate marble position and rail movement? If so, how ? A video clip and DAT files would be very appreciated ;o) Philo (24 years ago, 12-Dec-01, to lugnet.robotics)
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| | Re: marble rail
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oopse I forgot the link to the pictures (URL) (24 years ago, 12-Dec-01, to lugnet.robotics)
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| | marble rail
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I've uploaded pictures of this rcx controled rail.The purpose of this thing is to move a marble or two, back and forth.It uses a rotation sensor and 2 motors to pivot the whole thing left or right and a rotation sensor and a motor to move the rail (...) (24 years ago, 12-Dec-01, to lugnet.robotics)
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| | Re: Mario's new book...
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"Building Robots with Lego Mindstorms". I just got my copy today, and I'm thankful for the upcoming holidays; reading the book, learning from it and trying out the ideas will be taking up most of my free time from now until January. I've only had a (...) (24 years ago, 12-Dec-01, to lugnet.robotics)
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| | Mario's new book...
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi everyone, Sorry for this repeat question... ...but was is name of Mario's new book. Thanks Q -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see (URL) PGP (...) (24 years ago, 12-Dec-01, to lugnet.robotics)
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| | Re: source of solar panels for Lego robots?
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Please check: (URL) Original Message ----- From: "Gareth Bestor" <bestor@cs.wisc.edu> To: <lego-robotics@crynwr.com> Sent: Wednesday, December 12, 2001 2:45 AM Subject: source of solar panels for Lego robots? (...) anything (...) (24 years ago, 11-Dec-01, to lugnet.robotics)
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| | Re: Electro-magnets
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IMHO is the easiest way to get strong electro-magnets to disassemble 6V relays. They include good electro-magnets. I did so and was able to hold a 500g hammer with two of them running at 6V. I used relays from FINDER (Series 55 if i remember right), (...) (24 years ago, 11-Dec-01, to lugnet.robotics)
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| | Re: Electro-magnets
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What is your plan for the electromagnets? If you can not find them, they are simple to make yourself out of fine insulated (varnished) copper wire. You will have to do a little bit of experimenting to get the streingth just right. Wrap the wire into (...) (24 years ago, 11-Dec-01, to lugnet.robotics)
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| | Electro-magnets
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I'm sorry if this is a bit off the subject- Does anyone know where you can get small electro-magnets in the UK? Nobody seems to sell them. I am thinking of making a robot with electromagnets. BEN (24 years ago, 11-Dec-01, to lugnet.robotics)
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| | source of solar panels for Lego robots?
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Can anyone recommend a good source to find relatively cheap, high-power, compact solar panels that could be wired together to power an RCX, or anything else for that matter. I've seen the Lego solar panel in Lego Dacta, but it seems to be very (...) (24 years ago, 11-Dec-01, to lugnet.robotics)
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| | Robot Controller
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This message announces the first beta release of Robot Controller, a new Mac OS X application for testing and controlling RCX-based robots (with the standard firmware). Download it from: (URL) me what you think! Barney. (24 years ago, 11-Dec-01, to lugnet.robotics.rcx)
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| | Re: Name of Robolab RCX2 Firmware file?
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Thanks again Dave. As it turns out, nqc on Mac OS X expects a firmware file with UNIX line endings. BBEdit Lite 6.1 for OS X did the job just fine. After saving with UNIX line endings, nqc was able to download the firmware. B. (...) (24 years ago, 11-Dec-01, to lugnet.robotics)
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| | Re: Request for new P-code.s19
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It just so happens that I did make a "merged" and cleaned up version of the Pcode source about a year ago. Like my libhb source, I can't guarantee that it works for everyone, but it seemed to work for me. I've just put it up for download at (URL) I (...) (24 years ago, 11-Dec-01, to lugnet.robotics.handyboard)
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| | Re: Name of Robolab RCX2 Firmware file?
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(...) NQC is picky about line endings for firmware files. On a Mac, it assumes Mac line ending, on Windows, it expects DOS endings, Unix for Unix. There are a few cross-platform combinations that work ok, but not all work. If you have BBEdit Lite, (...) (24 years ago, 11-Dec-01, to lugnet.robotics)
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| | Request for new P-code.s19
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There are several versions of the p-code floating around, one person wrote a nice smooth PWM version, and another wrote a no LCD version, and I've seen a few variations with different size LCD screens. I would like to officially request that someone (...) (24 years ago, 11-Dec-01, to lugnet.robotics.handyboard)
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| | Re: learning RoboLab (long)
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1. Click www.lego.com/dacta/I...tabase.asp 2. Click the "Quick" button. 3. Click "Search" button. (...) (24 years ago, 10-Dec-01, to lugnet.robotics.rcx.robolab, lugnet.edu, lugnet.dacta, lugnet.books, lugnet.robotics.scout, lugnet.robotics.vll)
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| | RE: compensating battery level
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(...) Current is a function of voltage when discussing a purely resistive circuit, however motors are a different subject entirely. The current limiting factor is the counter electromotive force (CEMF) that builds up when the motor turns. At start (...) (24 years ago, 10-Dec-01, to lugnet.robotics)
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| | Amatuer Astronomy and LEGO
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Amtauer astronomy has recieved a boost over the years from robotic systems as much as Lego. Computerized robotic scopes, referred to as "GOTO scopes" by one manufacturer, that find stars in the sky and track thier movments can be had for as liitle (...) (24 years ago, 10-Dec-01, to lugnet.robotics)
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| | Re: learning RoboLab (long)
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I could not get anywhere with this link. How do you get to the docs? 5.e. Invent & Investigate Database www.lego.com/dacta/I...tabase.asp Activities in the form of student challenges. The Teacher Notes sections show programming examples. 27 (...) (24 years ago, 10-Dec-01, to lugnet.robotics.rcx.robolab, lugnet.edu, lugnet.dacta, lugnet.books, lugnet.robotics.scout, lugnet.robotics.vll)
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| | Re: 6th grade students use Mindstorms at ISU
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"Xcalabur" <Xcalabur@rocketmail.com> wrote in message news:Go33xn.8EA@lugnet.com... (...) containers, (...) Sounds like the latest FLL (First Lego League) competition - Arctic Impact: (URL) (24 years ago, 10-Dec-01, to lugnet.loc.us.ia, lugnet.mediawatch, lugnet.robotics.edu)
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| | Re: FW: Using the Handyboard without the LCD display
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(...) Hi Look at the Handyboard-webpage under: (URL) you will find the code to use the hb without a lcd bye Martin (24 years ago, 10-Dec-01, to lugnet.robotics.handyboard)
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| | FW: Using the Handyboard without the LCD display
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(...) (24 years ago, 10-Dec-01, to lugnet.robotics.handyboard)
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