The two disk based bot design that Micro Center sells for Adafruit uses the same pair of gear enabled motors that were described by erco early on, (last sold when RS was going out of business), and in a base also sold by Tinkersphere as well. (Both are based in NYC). By disk based, I mean that the bases sold with the other parts are indeed circular in shape.
And it seems that both of the platform designers expects that the buyers will be using the Arduino platform to manage these motors. Obviously it is possible to manage such devices via the Prop. And indeed Parallax does sell comparable hardware.
Has anyone bought either of these platforms, and gotten them to work using the Prop, and appropriate motor driver circuits?
Just asking. No plans to build something around them. Certainly something around the kit that erco described, soon.