[Racer26]

It seems to me that the bulk of what is needed to build a generic (not game-specific) field is some basic networking equipment, a high-end wifi router, 8x 4 digit led displays (3 teams, plus an arena timer per alliance station), and some packet sniffing done between the DS and FMSLight to determine how the communications packets enable/disable/autonomous the robots, followed by some custom software to emulate FMS.