My conversion from DC motors to continuous drive servos is going to be a little more involved than first assumed. The idea is to keep the speaker, upgrade the drive-train, and re-purpose some buttons for power and possible function modes. Oh, and perhaps the toughest item…enclosing the IOIO itself…without nuking the bluetooth function.
Here goes nothing…

It became quite clear that I need to gear up before proceeding.

Shipped and on the way…hoping to get a chance this weekend to get my grind (and glue) on.