How to modify the wall-e robot wheels

jackiejuju

Singapore

Asked Oct 2011 — Edited Jan 2012

Hi,

I like the video of "real wall-e" very much, and very interested in make one.
I'v bought the u-command wall-e (it's pretty expensive). And have taken apart it.
I found the the wall-e only have one DC Motor connected with its left wheel, and right wheel is driven by left wheel through a special group of gears, which make right wheel always turns forward, no matter left wheel turns forward or backward. By this design, wall-e can only go forward and turn left, cannot not turn right or go backwards.
So I need to use another motor to control the right wheel solely. That means I have to modify the gears of right wheel. But all gears are sealed in one small plastic box and cannot be open.
Anyone have suggestions ?

Best Regards,
Jackie Ju

Related Content

Synthiam

Based on your post activity, we found some content that may be interesting to you. Explore these other tutorials and community conversations.

Troy

USA

#1 Oct 2011

I noticed the same thing when I opened mine up. I went, "now I see why DJ didn't just use an H-Bridge here. There's only one motor!"
Im not an expert here because I havent personally done it. Have you considered doing it as DJ has and just use modified servos? Another option (and again I havent done this yet) is to use a Tamiya dual motor drive and and an H-Bridge. There may be an issue with the shaft length though. Here are DJ's suggestions from this website (Example1 and Example2)

Pabi!o

Netherlands

#2 Oct 2011

Hi there Jackie,

I''m busy with the u-command also ( bought it very cheap via ebay).
Your right about the one motor.
I pulled everything out and put 2 modified servo's in it.
hope you can see it pictures made with an old camera.