Disc Lauching Velocity

[Ether]

Originally Posted by billbo911

My only concern is that the second interrupt would occur before the processing of the first interrupt had completed

If your two sensors are only 12" apart, you'd have the same concern, since that distance is roughly the same as the single-sensor approach (wherein the distance is the diameter of the frisbee).

So as you said, since the frisbee speed is plenty slow, it's not a concern.

The reason I brought this up is, using the single-sensor approach it might be easier to set up to measure the speed of the frisbee as it is passing thru the shooter at various locations. This might produce some very revealing data about slippage.