https://www.engadget.com/2005-02-09-hollerbot-the-sub-500-diy-robot.html
HollerBot, the sub-$500 DIY robot
Feb 9, 2005 - Zach Smith was tired of waiting for an affordable robot that did what he wanted it to do, so he's building his own. And like any good geek, he's building it...
the subdiyrobot