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(Yet another Pneumatic Newbie Question) :) Does anyone know if aquarium air lines and accessories fit LEGO pneumatics? >> Mark (21 years ago, 13-Jun-03, to lugnet.technic)
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(...) No. It's a little too big. There is commercially available tubing that is compatible with LEGO pneumatics, but I cannot recal the name of it. Do a search through the newsgroups here (.technic and .robotics) and perhaps you'll find some info. (...) (21 years ago, 14-Jun-03, to lugnet.technic)
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(...) Ah, nuts. I was hoping I might have a cheap source for lots of tubing, T connectors, and what I was *really* hoping for... those one-way valves that are only like $2 a piece. >> Mark (21 years ago, 14-Jun-03, to lugnet.technic)
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(...) Actually, I have used aquarium tubing and one way valves before. There is 'miniature' airline tubing for aquariums that I think fits with Lego pneumatics. It is much stiffer than the official silicone tubing though. But this miniature airline (...) (21 years ago, 14-Jun-03, to lugnet.technic)
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(...) Know where I can find those adapters? That would certainly be helpful. (...) Yeah... there's only a handful of used ones left though. I'd like to find a place where I can get a ongoing supply of check valves. I have more than a few ideas that (...) (21 years ago, 14-Jun-03, to lugnet.technic)
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In lugnet.technic, Mark Tarrabain wrote: <snip> (...) Looking good Mark. It computes. I had not thought about driving the source of the switch as one of the inputs, or I tried it early on and gave up. Kevin (...) (21 years ago, 14-Jun-03, to lugnet.technic)
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In lugnet.technic, Mark Tarrabain wrote: <snip (...) Mark, I am impressed with this concept, and wanted to see if I could eliminate the rubber bands and get back to a differential pair (standard LEGO pneumatic) setup. To create the complement (in (...) (21 years ago, 19-Jun-03, to lugnet.technic)
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(...) Er... You can add 2 three bit numbers using that few components?!?!? (heavy sigh) Well... that totally blows anything away I think I could have come up with. My one-bit full adder (A+B+Carry in) alone used three pistons and 13 switches. I'm (...) (21 years ago, 19-Jun-03, to lugnet.technic)
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(...) Uhhhh..... You are worthy. I can create a full adder (A+B+Carry in) in three pistons, 17 switches (7+7+3) and no rubber bands. You win on switch count. I win on band count. Rereading my post I can see how I led you astray. Mark is worthy.... (...) (21 years ago, 19-Jun-03, to lugnet.technic)
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In lugnet.technic, Mark Tarrabain wrote: <snip> (...) Well.... I can add two three bit numbers using three pistons, but only one bit at a time. :^) Kevin (...) (21 years ago, 19-Jun-03, to lugnet.technic)
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(...) Egad! (insert pause for realization) And I'm back in the game! Well, rubber bands *are* cheaper'n switches, after all. :) My adder design doesn't *strictly* require rubber bands, but would require that all three pistons be "reset" at the end (...) (21 years ago, 19-Jun-03, to lugnet.technic)
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(...) Er.. re-reading that, I see that sounds kinda dumb. It sounds like I meant that you have to manually reset them. I actually only meant that the pistons can be reset by applying air pressure on the other side of all three pistons. >> Mark (21 years ago, 20-Jun-03, to lugnet.technic)
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