 | | Re: off topic test
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(...) just testing (19 years ago, 3-Aug-05, to lugnet.technic)
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| | Re: Crane mathematics/netiquittte?
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(...) Thanks Ross. Hopefully the outriggers will not give way. I used the diagonal outriggers to minimize the complexity of the crane mechanisms, but they may give way under the wieght. I hope it is as good as your designs! I just realized (...) (19 years ago, 2-Aug-05, to lugnet.technic)
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| | Re: Crane mathematics
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(...) Hi Nathan, looking good! I wish I could be at Brickfest to see it. WRT balance, the answer is that cranes are very rarely in total balance. That is why they need such strong accurately machined turntables - the turntable is generally taking (...) (19 years ago, 2-Aug-05, to lugnet.technic)
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| | Re: SSC (was Re: Best pneumatic hexapod yet!)
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(...) Your walking stuff is always very popular, as it is. Don't worry, I'm not pushing for anything. I already have about five other projects that need to be completed in the next ELEVEN days... Steve (19 years ago, 1-Aug-05, to lugnet.technic, lugnet.robotics)
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| | Re: SSC (was Re: Best pneumatic hexapod yet!)
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(...) Given that I have not designed the feet yet, I don't know. (...) I have not finished the feet, but I was planning on providing an ankle that rotates about the Y axis, so that foot rotation is limited. A certain amount of sliding is expected. (...) (19 years ago, 1-Aug-05, to lugnet.technic, lugnet.robotics)
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| | Re: SSC (was Re: Best pneumatic hexapod yet!)
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(...) I should say it would look more 'natural'. How easy will it be to install a normally closed (while the foot is in the air) touch sensor in the foot? Will the feet be required to do much rotating and/or sliding while taking a step? (I assume it (...) (19 years ago, 1-Aug-05, to lugnet.technic, lugnet.robotics)
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| | Crane mathematics
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Does anyone who makes cranes have some easy math such as geometry for crane design? The problem I see is that for a crane to be always balanced the weight in the back needs to move according to the load weight. The boom on mine bends, but when (...) (19 years ago, 1-Aug-05, to lugnet.technic)
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| | 8435 MOC by Rgeiger
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This is an older post but look how well they used the parts! (URL) (19 years ago, 1-Aug-05, to lugnet.technic)
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| | Re: SSC (was Re: Best pneumatic hexapod yet!)
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(...) No. The central timer is unchanged by switching from forward to reverse, or walk to turn. The things that do change behavior are the leg sweep pistons. These will do their best to accommidate the change, which may not have any affect until the (...) (19 years ago, 1-Aug-05, to lugnet.technic, lugnet.robotics)
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| | SSC (was Re: Best pneumatic hexapod yet!)
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(...) Will it be necessary to switch anything at a specific time? For example, if SSC is walking forward, and it takes 3/4 of a step, then levers are flipped to make it turn (which would be reversing the legs on one side), to complete the "current" (...) (19 years ago, 1-Aug-05, to lugnet.technic, lugnet.robotics)
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| | Re: clutches
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(...) What about this (URL) ? I have successfully used that in applications requiring a clutch - in fact an elaborate multiplexer with a worm gear, two has bushes and two of these clutches. They do still crunch - but much less so than some other (...) (19 years ago, 1-Aug-05, to lugnet.technic)
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| | Re: clutches
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(...) Lego have never made a clutch (correct me if im wrong and i don't consider this to be a "clutch"(URL) ) so i'll assume you are reffering to the gearbox. The beauty of the older style gearboxes (and what made them work) was the fact that the (...) (19 years ago, 1-Aug-05, to lugnet.technic, FTX) !
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| | Re: Best pneumatic hexapod yet!
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(...) LOL! Well, in fact, when SSClagorpion is further along, the RCX will control two pneumatic multiplexors that control forward/reverse and turning/walking. With this new circuit the changes from turning/not turning, and forward reverse should be (...) (19 years ago, 31-Jul-05, to lugnet.technic, lugnet.robotics)
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| | Re: Best pneumatic hexapod yet!
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(...) This is very much like input multiplexor I created when inventing my first pneumatic adding machine. The muxing was needed to create my 16 key keyboard. (URL) can see the resistor ladder network stack to the right of the keyboard. Also you can (...) (19 years ago, 31-Jul-05, to lugnet.technic, lugnet.robotics, FTX)
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| | Re: Best pneumatic hexapod yet!
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(...) Will this be needed if we always have at least four feet locked into weight bearing state at a time? I've incorporated your folding/locking table leg into this walker. You will want touch sensors to avoid falling off the table though I guess. (...) (19 years ago, 31-Jul-05, to lugnet.technic, lugnet.robotics)
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| | clutches
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I saw on some sites a pic of a lego clutch using the newer double bevel gears. This is basically the same type of clutch system used in earlier technic car sets (8860, 8865) and I was wondering, since those clutches used to jam (the gears couldn't (...) (19 years ago, 31-Jul-05, to lugnet.technic)
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| | car seat - never-ending improvement
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grrr oe (URL) <pixsrv@poczta.onet.pl> wrote in message news:IKEnGy.1uCB@lugnet.com... (...) (19 years ago, 29-Jul-05, to lugnet.technic)
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| | car seat - never-ending improvement
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hi it's my 4th version of car seat sorry it's just webcam photo (very low quality) (URL) pictures and mlcad file soon pixel (19 years ago, 29-Jul-05, to lugnet.technic)
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| | Re: Best pneumatic hexapod yet!
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(...) Sounds like an ideal application for an RCX input multiplexer: (URL) You can then have 12 switches on your RCX to measure two positions on each of 6 legs. Using the thermometer setting on the ports, each combination of switches is (...) (19 years ago, 29-Jul-05, to lugnet.technic, lugnet.robotics, FTX)
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| | Re: Best pneumatic hexapod yet!
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hi kevin and steve it should be the first moc where the rcx would be let's say a slave to pneumatic circuit am i right guys :D pixel "Kevin L. Clague" <kevin_clague@yahoo.com> wrote in message news:IKEEqD.A0B@lugnet.com... (...) that (...) (...) (19 years ago, 29-Jul-05, to lugnet.technic, lugnet.robotics)
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