--- /dev/null
+---
+title: videos
+layout: default
+---
+
+# Videos!
+
+## challenge-bot in action
+
+<iframe src="//www.youtube.com/embed/qg5WpeSCRZY?list=PLLiYVIuIQg5IhiQzziHun8cUVaD0VHwhP" frameborder="0" allowfullscreen></iframe>
+
+The challenge-bot has two autonomous functions:
+
+1. follow-bot: keep a constant distance from something in front of it
+2. the tabletop challenge: wander around a table without falling off
+
+## instructions for building your challenge-bot
+
+<iframe src="//www.youtube.com/embed/Js6rk4XW_DU?list=PLLiYVIuIQg5L9JdJTJITYFqEnpDYlZaRn" frameborder="0" allowfullscreen></iframe>
+
+Here are instructions for putting together the kit (version 5df1ea8).
+
+The challenge-bot course will walk you through all of these steps.