how to change voltage(output) after 4seconds

[Fangzhou77]

I am making a one car garage. So when I want the motor to open the door I give out 4V to the motor through labview. What I want to implement is when it enters the case structure of true(means open the door), it first gives out 4V for 4s and then change the output voltage to 0V so the motor can stop. (Because the angle that a door can open is not infinite) I tried the timer. But if I use a timer, I need it to reset everytime it enters the case(true) structure. But I didn't find how to do that. So right now I don't know how to implement this function. Thank you so much!

The attachment is my vi right now.

[mikeporter]

I would look at a state machine structure. One sequence of states would open, another would close.

Mike...