Programming loop for limiter swith

[jwatson12]

Hi All:

We are working with a slingshot solution that is tied to a motor control. The motor only needs to turn in one direction. The tensioner that winds back our slingshot will automatically release or fire if there is no way to stop the action unless we stop pressing the button. So, we are programming a swith that will be triggered to tell the motor to stop just short of firing. The puzzle here is that the switch must be triggered twice before stopping the motor before re-firing.

Once the driver presses the trigger button, the ball should fire, then automatically recoil, count two switch counts and stop. Then fire next time the same button is pressed.

Any ideas? Thanks in advance!