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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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| | Re: Some help or advice requested
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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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| | Re: Some help or advice requested
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(...) <snip> Hi Owen, As you say, you want a mechanism where the switch wants to be either on or off, but not in the middle. Had you thought about adding a pivot point at the top of the switch handle, with an axle going up and a weight at the top. (...) (15 years ago, 22-Jan-10, to lugnet.technic)
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| | Re: Some help or advice requested
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(...) SNIP I don't think there is a 'save' way to do that. In fact thats the reason reversal switches have dead space, because you will short circuit stuff otherwise (might be only for a millisecond though). I don't know if you ever worked with some (...) (15 years ago, 22-Jan-10, to lugnet.technic)
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| | Re: Some help or advice requested
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(...) SNIP (...) I have been asked for some pictures of what I am working on (very much prototypes at the present - don't expect anything elegant). (URL) is the track for the tray, and the drive mechanism. As the axle at the front (bottom) of the (...) (15 years ago, 22-Jan-10, to lugnet.technic)
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| | Re: Please help me identify this brick!
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(...) Aha many thanks! That also explains what the black and white striped discs are for! I'll have to keep an eye out for the 'control panel' thing on ebay! Cheers, -Mat (15 years ago, 20-Jan-10, to lugnet.technic)
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| | Re: Please help me identify this brick!
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(...) Yes, it's a 4.5V part, incuded in some education sets, see (URL) be used as a rotation sensor with this disc: (URL) (15 years ago, 20-Jan-10, to lugnet.technic)
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| | Question about gearing Power Functions-based trains
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I've noticed that because the Emerald Night's two sets of driver wheels are locked together, the engine struggles to go around corners: the outer wheels have further to turn, so the wheels slip and the engine's movement becomes jerky. Would it be (...) (15 years ago, 19-Jan-10, to lugnet.trains, lugnet.technic, lugnet.robotics, FTX)
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| | Some help or advice requested
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Hi all. I am currently working on a project (to be revealed in due course!) and I've come across something of a stumbling block. I have a tray that is constrained to move in one dimension, and a series of short liftarms under the tray, all rotating (...) (15 years ago, 19-Jan-10, to lugnet.technic)
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| | Re: Please help me identify this brick!
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(...) (URL) a bit early for Mindstorms. I've only got a passing familiarity with the 4.5v system, but I believe that any parts that feature that type of 3-prong socket are designed for 4.5v power. All Mindstorms parts use either the 2x2x2/3 electric (...) (15 years ago, 19-Jan-10, to lugnet.technic)
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