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(...) :) I'm thinking to add a discussion forum to TechnicBRICKs for too long!... :( But actually hardly have the time to post what I'd like and have in queue, so a forum is just another item in the queue, as it would mean a considerable time (...) (15 years ago, 12-Feb-10, to lugnet.technic)
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| | Re: Where you all at?
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(...) Hi Tobbe, Long time, no talk ;o) (...) Pretty much indeed, except for some activity in CAD section, main reason why I'm still here... (...) Little more to offer (TBs is very good, but it's not a direct replacement!). NXTasy forum is vary (...) (15 years ago, 11-Feb-10, to lugnet.technic)
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| | Where you all at?
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Hi there! So I'm getting the gears running again and LUGNET has died, more or less. Where have all the Technic buffs gone to do their chit-chat? I've found this blog (URL) which keep me sort of in the loop... (15 years ago, 11-Feb-10, to lugnet.technic)
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(...) So do I... Now I just have to find how to align again the fingers without dismantling everything ;o) Philo (15 years ago, 7-Feb-10, to lugnet.technic)
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(...) Really nice. And thanks for the LDraw instructions. I really like building this kind of contraptions and mechanisms. Jetro (15 years ago, 6-Feb-10, to lugnet.technic)
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Here is my current favourite MOC: (2 URLs) It's a Lego implementation of an amazing mechanical puzzle invented by Oskar van Deventer and Bram Cohen, as seen here: (URL) I can't improve on the explanation given in this second video - just watch it! (...) (15 years ago, 6-Feb-10, to lugnet.technic, lugnet.announce.moc, lugnet.robotics)
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(...) Fantastic work as always! (15 years ago, 3-Feb-10, to lugnet.technic, FTX)
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(...) Yes, there are quite a few possible variations on this mechanism. There is even at least one in an official model: (URL) Hope you get it working. I always like a purely mechnical solution :) (15 years ago, 3-Feb-10, to lugnet.technic)
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(...) Hmm, I had dabbled with a similar solution, but inverted (with the motor driving the bottom gear and the two side gears the two outputs, but discarded it for reasons that escape me at the moment. I must investigate this further. Thanks! Owen. (15 years ago, 2-Feb-10, to lugnet.technic)
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Here is yet another possible solution that I have found effective for something very similar (a vehicle that reverses its direction when it hits an obstacle). This one is purely mechanical (no electrical switch needed). (2 URLs) The mechanism relies (...) (15 years ago, 31-Jan-10, to lugnet.technic)
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I've just posted a new update to (URL). This is an unusual update in that it does not add any new years of models (although I am working on 1995). Instead it makes a number of improvements to existing information. Reformatted some older pages to (...) (15 years ago, 28-Jan-10, to lugnet.technic, FTX) !
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(...) It would depend on how much of the dead band you eliminate. Cleaning up bookmarks I came a cross this which might work: (2 URLs) Jetro (15 years ago, 27-Jan-10, to lugnet.technic, FTX)
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(...) A nice solution, but I doubt very much if my tray could push the pendulum upright (especially since the total angular travel would be the limited movement of the pendulum _plus_ the angle that the tri-blades had rotated). However, for (...) (15 years ago, 27-Jan-10, to lugnet.technic)
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(...) (URL) (...) (URL) (...) Kevin (15 years ago, 26-Jan-10, to lugnet.technic)
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(...) <snip> (...) I've got a slightly different solution, where the tray tips an inverted pendulum right and left. The pendulum's momentum/weight flip the polarity reverser. The tri-blade bounds the inverted pendulum's swing. The first three steps (...) (15 years ago, 26-Jan-10, to lugnet.technic)
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(...) You're quite right in that there's nothing in the pictures to suggest that having the having the motor running after the tray reaches its stop would be a bad idea. However, that would be disastrous for the rest of the machine - think of a (...) (15 years ago, 25-Jan-10, to lugnet.technic)
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(...) ... (...) Well, seeing your pictures, I can't help wondering: do you actually need the tray to change direction as soon as it hits the end? If not, you can use a much easier solution: just power its motor for a given amount of time in one (...) (15 years ago, 25-Jan-10, to lugnet.technic)
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(...) Ok, so I have something that appears to do what I need it to do, however, it is a bit of a monstrosity, and I think that it shows either that I am a genius, or a madman - I'm not sure which! Bear in mind that this still includes several quick (...) (15 years ago, 25-Jan-10, to lugnet.technic)
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(...) Last year I built a pneumatic excavator module for a GBC display exactly for this reason: doing it with an RCX would have been like cheating when it could be done mechanically :D As for your 'problem', I've been turning this over in my mind (...) (15 years ago, 23-Jan-10, to lugnet.technic)
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(...) Hmm, an interesting solution. (...) But there's the rub! I'm afraid I can't see an obvious way to do that, given that the weight will need to be positioned quite precisely. I will play around with it, though, and see what I can come up with. (...) (15 years ago, 22-Jan-10, to lugnet.technic)
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