Quote:
Originally Posted by Starke340
I agree, it appears that the hole in the "hood" of the robot is where the ball would sit. The arm may have a roller of some sort to get the trackball and keep it in the robot. Nice looking robot! I can not wait to see the finished product! 
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The "hole in the hood" is more of an astetic choice by me to put a clear hood with lexan on a piano hinge and Gas springs that opens forward with a cool HISS sound like a BMW or Jaguar or somthing, so you can see all the idiot lights and do-dads, while at the same time providing access to the batery. although it may just end up being a removeable cover.
but in the end it may all just be scraped for weight, Oh well