FishyBallBot is designed for the RoboGuts™ circuit board ... an Arduino might fit to do the same work, but the RoboGuts™ circuit board crams much more functionality into the same space!
An experiment with making a little more advanced BallBot ... adding different wheels and other fish parts ... Now it's in many of the latest RoboToons Robot Theater Production videos on YouTube ... See the SolidWorksMagi postings ...
Designed for the RoboGuts™ circuit board ... http://www.r2pv1.com/
Wouldn't it be great if all my designs were FREE downloads?
The fastest and cheapest way to get all my .STL files FREE is to donate $5 to help fund school materials ... once I have $3,500 I'll convert all these files to FREE downloads. https://www.gofundme.com/roboguts-kits-lessons