[openSCAD tutorial](http://goo.gl/E3OQXc)
-[assemble the hardware](http://goo.gl/EV0FCJ)
-
-[wire and load code to the robot](http://goo.gl/gGH348)
+[build the challenge-bot](http://goo.gl/XgB0xq)
## Introduction
Most introductory robots are "dead-end" robots that
tend to strand people after they have the first
-few robot behaviors are implemented -- obstacle avoid,
-wall follow, line follow, don't fall off table, etc.
+few robot behaviors implemented -- obstacle avoid,
+wall follow, stay on table, etc.
One of the primary goals of the challenge-bot is to try
to make it expandable from simple to more complex in