see the EAGLE schematic, but none of the tags match anything on the board... where is a layout/address schematic???
any help appreciated... the old eyes dont have fun pinning out with a meter these days...
lots of good info here:
and anyone trying to interface one of the dual cone ultrasonic sensors look here -
http://arduino-robot.weebly.com/ its not english, but theres a link at the bottom for the code, it works, only took a few minutes to change it from stopping at a certain distance to spinning around until clear... works pretty sweet 
also, anyone else having the 'official robot board' loading problems- try just sending, then plugging in the USB, worked every time- and after a few loads that way, now it works 'normally' like it did when new... but after about half a dozen loads, it started hanging again, tried the send-then-plug in thing, took right off again.
getting fun now finally, the kids are dreaming up all kinds of doo-dads they want to program next