Simple Auto-resetting Sand-drop Door With "Tickets"

[qsmithy]

Hi there. I am trying to make a simple, self-resetting sand-drop door which activates after a player has submitted a "ticket" (paper, which I may replace with something else) to enter the train station. I have the generic 3x3 sand-drop door working and the item detectors set up... the only problem is that the single tick given by the item detector is not long enough to deactivate the door. Also, I do not have a way for the door to automatically push the sand back up after an X amount of time. I am not good with Redstone at all, so I don't know the easy fix, which I'm sure is obvious to all of you, to get this working. I do not want to rebuild the sand and piston mechanism, so I would like the resetting part of it to be connected to the item detectors. The picture below is what I have to far:

Redstone key:
Floor
Transposer
Pistons & Sand-drop Door
Item Detectors & On/Off Switch For Door

(The signal from the item detectors have to reach the underground torch to invert the signal to off and retract the pistons.)

 

[Predatorkillol]

might i recommend that you use red alloy wire or jacketed cable. Red alloy wire is a red power version of redstone that doesn't lose signal strength and can go on walls. Jacketed cable is a whole block form of redstone that is useful for gaps where you don't want blocks to show.
This could be easily made with state cells and toggle latches.

 

[qsmithy]

might i recommend that you use red alloy wire or jacketed cable. Red alloy wire is a red power version of redstone that doesn't lose signal strength and can go on walls. Jacketed cable is a whole block form of redstone that is useful for gaps where you don't want blocks to show.
This could be easily made with state cells and toggle latches.

I am aware of Red Alloy wire, I am not using it because it is not necessary (to my knowledge, at least.) I used a toggle latch before in another mini project of mine, so I am not completely ignorant. The problem is that I do not know what to use in particular situations.

If you, or someone else, could post a picture and explain how I would set it up with state cells and toggle latches, I would appreciate it.