With only one trigger line hooked up, and no ground line, I get random activations.
It doesn't activate with the trigger line removed, so I'm guessing that it's being activated due to the triggger line being an antenna and picking up some 60 cycle interference.
Does that sound reasonable and if so, how can I shield a trigger line?
I'm using this on a pinball game, so all 16 of the triggers will eventually be used, some long runs. So a less expensive solution would be appreciated.