Dave, that would work, although I would expect it to need quite a stiff wind to get over the mass of the bells? what did you use for a pickup? are there any more details of your project posted anywhere?

I was thinking about it again the other night while playing on the breadboard, would it be possible to have the magnet cause an interupt, and then meassure the time ellapsed when the magnet triggers it the second time and then reset and wait for the magnet again?

I know this will likely result in a fairly "slow" refresh but im assuming we are talking milliseconds anyway, :-)

Any hints on where i can start looking to find info on timing the triggers?