Hello again!
It has been ages since I have been on LMR and I missed you guys something fierce! :-)
I have just built another "generic" Arduino based bot (it WAS NOT fun getting the driver to install in Windows 8!!!)
(I will try and get a picture and more details up when I can, but basically it uses a Arduino Uno, a servo/Sharp rangefinder combo and a L293D bridge chip to control 2 very low power motors driving the wheels in differential form. Like I said, pretty generic.)
I am using the "MariaMole" IDE (see: http://dalpix.com/mariamole) as a nice replacement for the "standard" Arduino editor. (You do still need the old editor installed as this acts more like an advanced shell, but I fell in love with the code colors!)
LMR, Thank YOU for still being here and looking better than ever.