This photo is of his slide out electronics panel. Not too many R2 builders have something like this. It looks very clean.
I took R5-D4 for a drive around part of the con for people who don't know we have a bunch of droids in the back section. The con was HUGE! There was miles and miles of things to walk around and look it. Its pretty hard to see everything there.
We also did a panel at 6:00 on how to build droids.