I have realized I've not said much about BuckyBot's connectivity -- just waved my hands around while shouting "connect ... connect ...!".  That gave me time to develop a logical plan for connectivity.  In short, each BuckyBot will have an FM transciever to enable communication with a central PC -- which will track and coordinate all the bots working on a particular structure.  That would be a simple FSK modem, mind you.  That central PC ... clever boy I am, I'll call it the CPC ... well, that CPC will be on the internet ... running a simple web interface .   In fact, I had the idea that, when the BuckyBot SYSTEM is sufficiently mature, individuals could log on to the CPC and AFFECT THE BUILD as the bots build it.   ...providing their inputs don't violate certain build rules, of course....  A free-form building, as it were.... the ultimate something built by committee!  That would probably turn out to be a disaster, but hey, it COULD be done.  

The modems need a range >  1 Km.  Many wireless protocols won't go that far.  However, it's pretty much LOS (line of sight), so, FM should work well, and is VERY proven, simple, and cheap technology.  BuckyBot might need FCC blessing (in the US, anyway).