 | | Re: Pnumatic Grabber arm using Large (48mm) cylinders
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(...) logging machines were inspired by the elephants once used to move logs about, they seem to have similar configuration and work in a similar way. The steering is brilliant, one of the rear axles steers in addition to the model articulating in (...) (22 years ago, 14-Nov-03, to lugnet.robotics, lugnet.technic)
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| | Re: Pnumatic Grabber arm using Large (48mm) cylinders
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Here be grabbers: (URL) last two use the small cylinder, but I'm sure you can beef things up a bit and use the big ones. Have fun! :) (22 years ago, 14-Nov-03, to lugnet.robotics, lugnet.technic)
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| | Re: Pneumatic Quadraped 242
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(...) Wow, that's massive! And a video of at least one cycle would be helpful :) Why the large footprint? (22 years ago, 14-Nov-03, to lugnet.technic, lugnet.build, lugnet.robotics)
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| | Pnumatic Grabber arm using Large (48mm) cylinders
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Hi, i want to build a small pnumatic grabber for a little single rcx robot that i am building. The only problem is, i only have the pnumatic parts from the backhoe and ultimate builders set. I can't seem to come up with a design for a grabber that (...) (22 years ago, 14-Nov-03, to lugnet.robotics, lugnet.technic)
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| | Re: Motor Power
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G'day Gahlord, Just outof interest, as an experiment with my science class, we easily towed 30kg (66pounds) on a trolly, using a robot with two motors, 8 tooth gear driving a 40 tooth gear. Traction was the limiting factor, with tyres slipping - the (...) (22 years ago, 14-Nov-03, to lugnet.robotics)
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| | Compiling Classes
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I have several large classes in external .h and .cpp files that are added to my project and compiled into the .lx. I found that when I changed the number of calls to a major procedure from 2 down to 1, the final program size went down 20%. Are these (...) (22 years ago, 13-Nov-03, to lugnet.robotics.rcx.legos)
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| | Pneumatic Quadraped 242
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Hi All, I just snapped some pictures of my latest MOC. It is a pneumatic quadraped that has an advanced walking gait made completely out of lego pneumatics. Instant walking, just add air pressure. Quad242's front left and back right legs are paired (...) (22 years ago, 13-Nov-03, to lugnet.technic, lugnet.announce.moc, lugnet.build, lugnet.robotics)
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| | Re: Motor Power
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(...) And then there was a 48 pound lift: (URL) be more realistic, two 9V geared motors powered by 6AA batteries can provide much mechnical power. It all depends on your gearing and set-up, but I have a 10-pound model that rolls along easily powered (...) (22 years ago, 13-Nov-03, to lugnet.robotics)
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| | how to use LNP class?
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Holla, I have been been doing some tests of protocols from lejOS API where I'm about to give a try with this LNP class. The reason is to enable direct host addressing on my app, avoiding the packet_guaranty_issue (as_seen_from_exemple (...) (22 years ago, 13-Nov-03, to lugnet.robotics.rcx.java)
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| | Re: 4095 Record and Play
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"John Barnes" <barnes@sensors.com> wrote in message news:Ho92G6.170F@lugnet.com... (...) be (...) easier (...) that (...) battery (...) draped (...) standards (...) Sounds like promising news. I'd do almost anything (within reason) to make this (...) (22 years ago, 13-Nov-03, to lugnet.robotics)
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| | Re: One Input - Two Outputs?
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(...) The key to making this work is to ensure that there is tension at either end of the run that keeps the worm gear at one end of the axle or the other until it hits a hard stop. For example, my robot arm uses rubber bands to hold the gripper (...) (22 years ago, 13-Nov-03, to lugnet.technic, lugnet.robotics)
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| | Re: One Input - Two Outputs?
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Hi! Here's something at Brickshelf that might, or might not, be of help: (URL) pretty compact. Although it feels like a dif. and a couple of ratchets would do the same thing (but not what you're looking for). (22 years ago, 13-Nov-03, to lugnet.technic, lugnet.robotics)
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| | Re: I'm passing the NQC torch...
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Dear Dave, Thank you for your great work. My Best Regards Paolo (22 years ago, 13-Nov-03, to lugnet.robotics.rcx.nqc)
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| | Re: I'm passing the NQC torch...
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(...) I wasn't sure where to post this. I want to reply to everyone's replies, but there are quite a few and I don't want to clutter things up, so I'm replying under my original post.... You're welcome! I really appreciate all of the thank-you's - (...) (22 years ago, 13-Nov-03, to lugnet.robotics.rcx.nqc)
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| | Re: Motor Power
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One of the most import parts of a moco system is how much space the camera needs to cover. They can range from just pan and tilt, commonly called a "hothead" which will either record or playback only rotational data (HPB), all the way up to systems (...) (22 years ago, 13-Nov-03, to lugnet.robotics)
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| | Re: Proximity Sensors for Legway
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Hi Guys I have just updated the videos at (URL) It has balanced for several minutes on the kitchen floor in the mov00001 cofiguration.... but usually I start playing with the remote and that eventually throws it. I wasn't convinced before but I (...) (22 years ago, 12-Nov-03, to lugnet.robotics.rcx)
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| | Re: Motor Power
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(...) I've built a rudimentary motion control system with Mindstorms, but as the motors are not really steppers, I found I had some precision issues. Pulsing and timing never really got close enough for a repeatable move. You can use rotation (...) (22 years ago, 12-Nov-03, to lugnet.robotics)
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| | Re: I'm passing the NQC torch...
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Dear Dave, Thank you so much for your great contribution to the Mindstorms-community!!! Best regards, Dirk P.S.: John, all our hopes (trustfully) rely on you now! (22 years ago, 12-Nov-03, to lugnet.robotics.rcx.nqc)
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| | Re: Motor Power
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(...) Heavens, yes. I haven't done any heavy movement myself, but I've been awed in particular by TJ Avery and Beat Felber: TJ: (URL) Yes, that's a twenty-pound barbell. Beat: (URL) I don't know for sure, but there's gotta be 50 pounds of plastic in (...) (22 years ago, 12-Nov-03, to lugnet.robotics)
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| | Re: Motors on Sensor ports
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(...) Yeah... I wonder if that's a hardware limitation... (...) Well, that defeats the purpose... and I'm almost positive that powering a sensor port with 9v is a bad idea. (...) I dunno. Is it possible (I'm still in gr12 physics) that a circuit (...) (22 years ago, 12-Nov-03, to lugnet.robotics.rcx)
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