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VEX biped

s_forbes

By: s_forbes
New: 07-30-2006 01:35 AM
Updated: 07-30-2006 05:22 AM
Views: 5156 times


VEX biped

A two-legged vex robot, a sort of sequal to the vex bug. It's a pretty simple design, but suprisingly enough it can actually walk. Each foot hinges at the ankle and is moved with a servo attached with a linkage. The robot moves its legs with a motor near the top. I have ideas for making a slightly better biped someday in the future that will walk smoother and have the capability to turn.

This is a prototype for our 2007 FIRST robot! not really...

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07-30-2006 12:26 PM

billbo911


Unread Re: pic: VEX biped

I love your variation on this Biped design! Simple yet very effective. Based on the picture, it looks like the center of mass of approaching going outside the center of gravity. Do you have tipping problems with this design?
I also love the look of the Vex control's battery and status lights. It makes it look like this thing actually has eyes. Great picture!



07-30-2006 12:44 PM

SgtMillhouse648


Unread Re: pic: VEX biped

great job! and without any gyros or anything as bilbo said "simple yet effective"



07-30-2006 01:10 PM

Dan Petrovic


Unread Re: pic: VEX biped

Will we get to see any videos of this in action?



07-30-2006 04:58 PM

Fuzzy


Unread Re: pic: VEX biped

I really like the green eyes... did you try running it in the dark? XD



07-30-2006 05:55 PM

s_forbes


Unread Re: pic: VEX biped

Thanks for the comments!

Quote:
Originally Posted by billbo911
I love your variation on this Biped design! Simple yet very effective. Based on the picture, it looks like the center of mass of approaching going outside the center of gravity. Do you have tipping problems with this design?
I also love the look of the Vex control's battery and status lights. It makes it look like this thing actually has eyes. Great picture!
It's actually suprisingly stable. It can take 2-3 inch steps without risk of falling over, but because it is such a simple design the feet are not always parallel to the ground and it walks in a jerky motion when switching feet. I have some thoughts about a different design that would get rid of this problem, but as it is right now it works fine. Also, when I was testing with it earlier today I was able to get it to turn (relatively) on the spot, so it is actually pretty capable.

Right now we move each motor/servo individually with the controller to make it walk, but my brother will probably make a program for it pretty soon. Maybe then we can put up a nice movie of it walking around.



07-30-2006 10:45 PM

Michael Corsetto


Unread Re: pic: VEX biped

Sweet. I built a Lego Biped about 5 years ago which used pretty much the exact same method to walk. I don't have any pictures, but I do have a video laying around somewhere of it in action. Maybe I'll finally figure out how to use YouTube and upload it some time. Nice work with the Vex. Keep it up.

Mike C.



07-30-2006 10:51 PM

TheOtherGuy


Unread Re: pic: VEX biped

well, I programmed it and it kinda works but it is also kinda flaky so I'll have to go fix it sometime. Then we can put up a video of it in action!



10-04-2006 09:39 PM

nextvex


Unread Re: pic: VEX biped

heres a biped walker made out of vex http://metweb.spsu.edu/staff/jhudak/robotics/http://metweb.spsu.edu/staff/jhudak/robotics/



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