It was created using an arduino uno, ethernet shield and protoshield. It basically takes commands sent using iOSC on the iphone and fires electronic matches with the corresponding numbers. This all works threw a wifi network provided by a router in the briefcase. Everything runs off of a 4.5 Amp hour 12 volt battery system. The output of the arduino controls a pcb with 5volt relays on it. There is also a switch for Test mode or Fire mode. Test mode tests each ematch to make sure it is still a good ematch and unused.