Robin2:
You have not answered my request for "details of how often data needs to transfer from a slave to the master". That is important whatever system you use....R
By reading the posts, and watching many Errol Flynn and Vanessa Redgrave movies in my youth... it seems that this project is to have two people with swords or rapier, etc.....
these would be 'electrically charged' and the combatants would duel. at some time during the duel. one of the combatants would land a blow on the body of the opponent.
at the very exact moment this happens, a signal is to be sent notifying of the contact.
since two combatants can land blows at almost the exact same time, the speed of notification is important.
it might be possible that only one packet is sent in 20 minutes
or that 20 packets be sent in a minute.
the speed of response is the key.
as a side note, if two combatants thrust and 'kill' the opponent, one is 50ms faster, both are dead, how do you pick the winner ?