Vex walking robot [Archive]

sebas2mil

10-10-2007, 10:14

I have a crazy idea of designing a vex walking robot and maybe build it but I was just wondering before I started if anyone has done it before and if there is any hints or tips that someone can provide

This is going to be a biped meaning two legs

well thanks

Sebas

Andrew Bates

10-10-2007, 10:32

Check over on the Vexforum.com

Taylor

10-10-2007, 10:34

Take a look at some Mindstorm Lego designs - I remember some basic bipedal robots there.

MrForbes

10-10-2007, 11:09

you could probably duplicate this in vex

http://www.hvwtech.com/products_view.asp?ProductID=68

It just uses a servo and some interesting linkage.

Although it may not be quite as "bipedal" as you want...

s_forbes

10-10-2007, 13:24

It's not too difficult, You just have to take the time to think out all of the motions that you need. A simple biped, like the one that squirrel posted, only needs two different movements: One to shift the weight from one leg to the other, and one to move the legs forward/backward. If you design your bot right, you should only need two motors/servos.

I made a pretty crummy one a while a go, but it works. One motor to move the legs forward and backward, and one servo on each leg for an ankle.

http://www.chiefdelphi.com/media/photos/25362

Good luck with yours

fredliu168

10-10-2007, 13:26

If you want a realy good "walking" robot, check out team 71 Beaty's 2002-2003 world champion robot. I was originally going to do this for this year's competition, but I ran out of motors...

Jared W

10-10-2007, 20:45

ya its been done.
heres a webpage with 6 videos of a walking vexbot doing stuff.

http://metweb.spsu.edu/staff/jhudak/robotics/

basicxman

14-10-2007, 21:06

look at lynxmotions biped brats or parallax's penguins, these probably could be built with vex

robosteve

16-10-2007, 17:04

Jared, thanks for the links, those are very cool. I want to try to build walkign bot at some point. Maybe at the end of the year our class can have a competition with just robots with no wheels - that would be a sweet challenge.

Jared W

17-10-2007, 21:47

If you want a realy good "walking" robot, check out team 71 Beaty's 2002-2003 world champion robot. I was originally going to do this for this year's competition, but I ran out of motors...

I know this may seem sad...but i can't seem to find any pictures of Beaty's bot. lol.

can someone post a link or two?

and your welcome robot steve =)

EricH

17-10-2007, 22:00

I know this may seem sad...but i can't seem to find any pictures of Beaty's bot. lol.

can someone post a link or two?

and your welcome robot steve =)
From the Google images game thread:
http://www.chiefdelphi.com/forums/showpost.php?p=644769&postcount=15

The "walking" part is at the top of the robot in this picture. (The robot fell to its front during the match and "walked" after landing.)