Zoe The Robot -

I have go-kart wheels on my robot. You can see her in action at ZoeTheRobot.Net
Zoe contains two Maestro servo controllers, two Phidgets 8/8/8 boards, two Arduino boards (Mega & Nano), a Sabertooth motor driver and a Windows PC. The PC is running SQL server, Dragon speech recognition and a custom chat bot. She is powered by sixty 18650 lithium ion cells.

Zoe The Robot’s Web Site - Lots of videos!