LEGO TECHNIC : 10932


Technic / 10932	10931 \| 10933

Subject:	Re: MOC - Small Pneumatic Biped Walker
Newsgroups:	lugnet.technic, lugnet.robotics
Date:	Mon, 7 Jul 2003 10:35:37 GMT
Viewed:	2137 times

In lugnet.technic, Kevin L. Clague wrote: > 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 > (something like 30 PSI.) > > Many of my pneumatic switches are well used, and don't resist flipping as much > as new ones, so I grabbed the four easiest to flip switches that I had. > > Even with four easy switches, I still found that it took a lot of pressure to > flip the switches. So I ganged two pistons per switch, this made things work > better. > > http://www.brickshelf.com/gallery/kclague/pendmatic/p6120001.jpg > http://www.brickshelf.com/gallery/kclague/pendmatic/p6120002.jpg > http://www.brickshelf.com/gallery/kclague/pendmatic/p6120003.jpg > http://www.brickshelf.com/gallery/kclague/pendmatic/p6120004.jpg I made a video of this one.... The video is real time, so you can see that it moves quite quickly. I used my best compressor for this (three large hand pumps side by side all being pumped by hand at the same time :^) http://www.brickshelf.com/gallery/kclague/pendmatic/ppjr.mpg Kevin

Message is in Reply To:

		MOC - Small Pneumatic Biped Walker
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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