I wanted to make a turns counter for my drill press. I have it set for 330 RPMs or about 6 cycles per second. It doesn't work. Unreliable counting. My high point is (switch closure time) about 1/12 of the rotation, I wonder if I did a 50/50 duty cycle if it would be better.
Or, is expecting the switch to operate at 6Hz just to fast for a standard microswitch?
Mikek