I haven't been on LMR in a long time... here's a video of my robot mesh network working. It's been a while in development. ;)
Planning to make a tutorial for it, and I will post it here, eventually. Woohoo!
Skip ahead to the 6:30 mark to avoid the boring debugging (yay for unedited videos!)
The embedded video isn't working for me, so here it is: http://youtu.be/KSGt83BzX74
(Admin edit, video embedded)