Geekcon Project reviewer ROBOT (or Sand Clock.. depends...)

A robot will walk and review Geekcon 2018 projects, participants and visitors in a... well... "Geekcon manner". Wear your helmets. - Or - Some kind of a clock. - Or _ A clock that will review... Maybe a Cuckoo clock....

Details

For sand clock: Depends on resources, open area availability etc.... 
A robot will navigate autonomously on a large area using a differential GNSS technology (including a GNSS base station we may install somewhere) and draw a clock on the sand or... something like that.
We have some other alternatives... 
For a reviewer robot:  This s going to be a great fun...