i ust did this ctually...
i havent looked at these threads yet, but i just put a happ microswitch positioned so the pastic 'blade' that goes down touch the switch sightly when it travels.
at the moment it is just tied there with masking tape, funny thing is - it looks like it can stay like this for a while without secring it properly.
note that you can daisy chain both the real coin drop microswitch and this additional switch - so you get both. its fun to put real coins in once in a while too
