So I figured this would be a good community to get some information from. I am currently trying to get funded to build a robot/ host a YouTube tutorial series called "Let's build a robot together." Since this will be an Arduino powered project I figured I'd ask all of you how you think I should go about building up support for it.
Ok. So I took a look at your relay tutorial. Nowhere does it mention kickback diodes to prevent back EMF from destroying your Arduino or other circuitry.
Also, what you describe could be better accomplished with an H-Bridge.