 | | Hex565 - one leg at at time pneumatic hexapod
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Over the last few weeks, I've been working on a pneumatic hexapod that moves one leg at a time. I got it working this morning. It is pretty cool. It uses 7 large pistons (six for making the legs move forward/backward) and one for controling the (...) (19 years ago, 4-Oct-05, to lugnet.technic, lugnet.announce.moc, lugnet.robotics) !
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| | Re: Hex565 - one leg at at time pneumatic hexapod
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(...) That's good - not many of us have that many small pistons! I wish TLG would bring them out in a set again. I remember when they used to be available as spare parts they cost as much as a large piston. 31 pistons and 32 switches is a similar (...) (19 years ago, 4-Oct-05, to lugnet.technic, lugnet.robotics)
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| | Re: Hex565 - one leg at at time pneumatic hexapod
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(...) These days I buy my small pistons from Dacta. Last time I checked, they had a combo pack of small pump, small piston and three short hoses (black, grey and blue) for $10. I bought most of my small pistons that way (30). (...) Yes, the 31 (...) (19 years ago, 4-Oct-05, to lugnet.technic, lugnet.robotics)
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| | Re: Hex565 - one leg at at time pneumatic hexapod
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(...) <snip> (...) I doodled up the four legged version. It uses 2n+1 pistons, and 5n+1 switches. As I guessed, one less switch that then hex formulas. (...) If anyone wants to see this schematic, just let me know. Kev (19 years ago, 4-Oct-05, to lugnet.technic, lugnet.robotics)
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| | Re: Hex565 - one leg at at time pneumatic hexapod
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(...) I'll say! Now I also say, "I get it!" I had to stare and read pretty hard. I'll send you my advil bill. (lol) (...) Oooohhh Ya, I like that. (...) Amazing! Short vowels. (...) Still the volume of air is what counts, not the size or rather the (...) (19 years ago, 5-Oct-05, to lugnet.technic, lugnet.robotics)
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| | Re: Hex565 - one leg at at time pneumatic hexapod
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(...) Sorry about the headaches..... ;^) <snip> (...) I really like the legs. <snip> (...) Ah, yes, but the volume of a cylinder is the area of the face of the cylinder times the length of the cylinder. By halving the length, we cut the total volume (...) (19 years ago, 5-Oct-05, to lugnet.technic, lugnet.robotics)
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| | Re: Hex565 - one leg at at time pneumatic hexapod
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(...) That is a joy to watch. Even if it is slower than some other gait, it is very interesting to watch. I have vaguely followed your pneumatic threads, watching the cool diagrams and devices, but I will admit you lost me a while back with this. (...) (19 years ago, 5-Oct-05, to lugnet.technic, lugnet.robotics)
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| | Re: Hex565 - one leg at at time pneumatic hexapod
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(...) <snip> (...) I find it pleasing to watch also. It is very decisive about its stepping. When legs are moving individually, they do so realtively quickly, and then they all move at once, you see a definite lurch in body location. There is (...) (19 years ago, 6-Oct-05, to lugnet.technic, lugnet.robotics)
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| | Re: Hex565 - one leg at at time pneumatic hexapod
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(...) <snip> (...) How does it cope with uneven ground? It would be interesting to see a vid of it pulling itself over rough and bumpy terrain. (...) Ah - some kind of chicken walker. The thing that interests me most about pneumatic walkers is that (...) (19 years ago, 6-Oct-05, to lugnet.technic, lugnet.robotics)
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