 | | Re: MOC - Small Pneumatic Biped Walker
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(...) What can I say? Yet another amazing creation. You have a pneumatic control circuit in there somewhere, I think. I know what you mean about the small pneumatic cylinders needing such high pressure to move a switch. The engine I built following (...) (21 years ago, 16-Jun-03, to lugnet.technic, lugnet.robotics)
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| | Re: 2003 Technic sets appear to be released...
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(...) I don't mean to be rude but have you checked out this topic: (URL) M. (21 years ago, 15-Jun-03, to lugnet.technic)
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| | MOC - Small Pneumatic Biped Walker
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The other day I was given a challenge to make a small biped using small pneumatic pistons. Normally I don't use small pistons in combinations with switches, because the pressure must be increadibly high for a small piston to flip a pneumatic switch (...) (21 years ago, 15-Jun-03, to lugnet.technic, lugnet.robotics)
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| | spider walker
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I've had this wind-up mechanical spider for so long that I no longer remembered what it was called. I've always been fascinated with how it moved and wanted to recreate it with LEGO. It's been a fun project, and many challenges were overcome in (...) (21 years ago, 15-Jun-03, to lugnet.technic, lugnet.build, lugnet.starwars, lugnet.announce.moc)
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| | 2003 Technic sets appear to be released...
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I just went to the Lego S@H website and there are a number of new Technic sets there. In particular, the ten-piston 8455 Backhoe set is finally out and at $100 for all those pneumatics it is quite a deal too. I'm going to order some of this stuff (...) (21 years ago, 15-Jun-03, to lugnet.technic)
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| | Re: EGAD! (pneumatics)
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(...) You are doing well Mark. You can use three voltage comparators to detect which voltage level is being output. What you need is three comparators. One for 25%, then 50%, and 75%. If 75% is on, then you'll need to gate off the 25% and 50% (...) (21 years ago, 15-Jun-03, to lugnet.technic, lugnet.robotics)
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| | Re: EGAD! (pneumatics)
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(...) Close. What I would actually be wanting is eomthing that could use the voltage level being output from a *SINGLE* RCX port to do the addressing. So for controlling up to four devices from one port, for example, would require that 25% power to (...) (21 years ago, 15-Jun-03, to lugnet.technic, lugnet.robotics)
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| | Re: Building instructions for reversible, variable speed (barely) pneumatic engine
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(...) Beautiful! I will be putting one of these engines on my table! Thanks Kevin. Best regards, Paul (21 years ago, 15-Jun-03, to lugnet.technic, lugnet.robotics, lugnet.cad)
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| | Re: EGAD! (pneumatics)
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(...) Is this what you're looking for? A 3/8 RCX Output Multiplexer for the FT solenoid valves: (URL) the circuit diagram is a piece of art from France :-) (21 years ago, 15-Jun-03, to lugnet.technic, lugnet.robotics)
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| | Re: EGAD! (pneumatics)
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(...) Sweet! So with these adapters, I can use regular aquarium hoses, which can be bought for pennies a foot -- way cheaper than LEGO tubing. Elbow, tee, and cross connectors for aquarium hoses are also really cheap, and I've seen aquarium hose (...) (21 years ago, 15-Jun-03, to lugnet.technic, lugnet.robotics)
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