If anyone is interested in bi-ped walking, I uploaded thirty something image files to an Image hosting website, and the walkingDude00_MustReadMe.html(converted...
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Peter Balch
peterbalch@...
Apr 10, 2010 12:28 pm
Kevin ... Well, I think it's right. If the answer had come out with a different number of zeros then I'd have been suspicious. ... Yes but the voltage required...
42244
Peter Balch
peterbalch@...
Apr 10, 2010 12:35 pm
That's a very interesting construction technology. I like the idea of using off-the-shelf parts like that. ... Your agument is that we don't? Well, small...
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John Stachniewicz
jstachniewicz
Apr 10, 2010 2:59 pm
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Ramaprasanna Chellamu...
ramaprasanna
Apr 10, 2010 4:35 pm
http://www.youtube.com/watch?v=3GLN790PofQ Kindly share your thought on this. :) . Looking forward for your feedback. Regards, Ramaprasanna C...
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robotMaker
robotmeiker
Apr 10, 2010 5:44 pm
Peter: I always try to use off the shelf parts for my bots, it's cheaper and faster. Sometimes it might take a little longer, to find the right part, than to...
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robotMaker
robotmeiker
Apr 10, 2010 5:53 pm
Thanx for your very entertaining video. Fun to watch and full of good ideas, specially the water in the cup. I could use something like that. ... From:...
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David Buckley
robots42
Apr 10, 2010 6:25 pm
You will find that the ankles need to bend fore and aft to adjust the CG over the foot, 5deg makes a lot of difference to how a robot walks, of course you can...
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David Buckley
robots42
Apr 10, 2010 6:30 pm
You can't clock standard servos at 4ms Most lockup at less than 8ms and some smoke. Some act strange at less than 12ms Best not go below 15ms unless you really...
42251
Ramaprasanna Chellamu...
ramaprasanna
Apr 10, 2010 7:05 pm
... Regards, Ramaprasanna C...
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robotMaker
robotmeiker
Apr 11, 2010 8:51 pm
David: I hope that you got a chance to read all of the walkingDude00_MustReadMe.htlm document, and viewed all of the 34 pictures. As I mentioned at the start...
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David Buckley
robots42
Apr 11, 2010 10:09 pm
Hi Yes I did look at all your photos and redd the html document. Clocking at 4ms won't shorten the life of most servos, a lot of them will just die whether you...
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robotMaker
robotmeiker
Apr 11, 2010 10:32 pm
-Single stepping the servos? by that I presume you mean altering the set point by the resolution -of the servo controller, which is what maybe 4us? Of course...
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Peter Balch
peterbalch@...
Apr 11, 2010 11:57 pm
In the 1870's Eadweard Muybridge took successive photos of a man walking: http://www.youtube.com/watch?v=Q9PXnyZoyIM While the foot is down, it is flat on the...
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Peter Balch
peterbalch@...
Apr 11, 2010 11:59 pm
David ... Did it work? The suggestion is that it could wave its legs around when hung in the air but couldn't actually pull anything (or even move) when on the...
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robotMaker
robotmeiker
Apr 12, 2010 1:21 am
Thanx Peter for the link, I have seen these before, and plenty of others. That's why I posted the still images of people and children walking. I checked out...
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oric_dan
Apr 12, 2010 1:29 am
... Actually, this is not really correct. The most important picture of CD is #7 on row 2. http://img20.imagevenue.com/img.php?image\ ...
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rgould@...
uraniumsteel
Apr 12, 2010 3:03 am
The ankle is key to basic walking stability, also extra cushioning for the knee joint, ability to maintain balance in uneven ground, etc. Walking changes with...
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Rich Chandler
mauser712
Apr 12, 2010 6:32 am
... Plus, pressing down with either the inside or the outside of the foot is part of how we steer and balance....
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David Buckley
robots42
Apr 12, 2010 9:54 am
1/256 of the travel will be 1/256 of 1ms (millisecond) which is the pulse difference between a 1ms pulse which positions the horn (arm) to one end of its...
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David Buckley
robots42
Apr 12, 2010 10:06 am
That is something which we are still researching. The evidence is that it wasn't commercially successful but was probably demonstrable. The same with George...
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David Buckley
robots42
Apr 12, 2010 10:20 am
While we can balance that way I think we do much more from our hips twisting the whole leg. David ... From: Rich Chandler To: SeattleRobotics@yahoogroups.com ...
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Pankaj Kumar Barnwal
pankajkumarb...
Apr 12, 2010 1:44 pm
dear sir for wall climbing purpose i want to use wheels but these are going to be heavy . is electroadhesion is capable for that coz for tha we need about 750...
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oric_dan
Apr 12, 2010 3:22 pm
... Exactly. All you really have to do is take a couple of steps yourself to see how it works. As the foot comes down, the ankle is typically bent at right...
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Joe Justice
kiwikungfu9
Apr 12, 2010 4:44 pm
About the flexible ankle: As far as I've studied bipeds require a flexible ankle for walking on un-even or unpredictably compressible terrain, or for walking...
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Steve Kozachik
steve_kozachik
Apr 12, 2010 4:54 pm
Work continues, and progresses, in the project for the Rover Girls Robot Club to convert a fleet of Thunder Tumbler toys into autonomous robots. Two...
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Cathy Saxton
pegasus32768
Apr 12, 2010 5:40 pm
Hi Steve. Seems like a good plan. A couple comments... The Atmel AVR ATmega series is a good choice, lots of AVR programmers in the group. 328P seems like a...
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Alan Marconett
km6vv
Apr 12, 2010 5:50 pm
Ball-in-socket joint from joysticks. Sounds like what I'm looking for. I've even considered using the entire miniature joystick as the foot. Do you have a...
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robotMaker
robotmeiker
Apr 12, 2010 6:27 pm
As I said in the HTML document, I'm clocking the servos at 20ms and I divided the full travel into 256. When I give the command to move the arm from 199 to 200...
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Peter Balch
peterbalch@...
Apr 12, 2010 8:52 pm
... As I explained, the electroadhesive force is F = permittivity * A * V^2 / (2 * d^2) A is area in sq metres; V is voltage; d is separation of the...
