Hi everybody...long time reader, first time poster :). I'm jumping into the bot world with a re-build of an old HeathKit Hero Jr.
He has one drive wheel steered by a stepper motor. At the very least a servo would work better than the stepper. It looks like all the projects you all are doing have the skid-steer type drives (like Wall-e) So should I scrap the tricycle configuration and go to 4 or even tracks? I'd like here the pros and cons from the experts!
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If you were designing a bot for outside, then 4 wheeled skid style drive would be best for that application...
If it has the steering wheel setup I would personally keep that, replace the stepper motor for a servo and viola, job done. You could use the stepper motor but to be honest they tend to be more trouble than they are worth.