March 22: Inputs and Outputs

Outputs

• Gears (Clockwise/Counter Clockwise)

These are used to open and close the door. Clockwise opens, counter clockwise closes. Without these gears, the door wouldn't act much like a door (It would be either a wall or entry).

• Door part 1

This is the very top part of the door. Each door is divided into 4 sections. On all of the doors, this is always the highest and it's the only one that never moves- everything else moves to it. Without this part, the design and whole door wouldn't work. It wouldn't be very safe or weather protective either- there'd be a hole in the door!

• Door Part 2

This is the second highest part of the door. Each door is divided into 4 sections. On all of the doors, this is always just below part 1, just above part 3, and only moves once, with part 4's second movement. It goes straight from its position up to part 1. Without this part, the design and whole door wouldn't work. It wouldn't be very safe or weather protective either- there'd be a hole in the door!

• Door Part 3

This is the second lowest part of the door. Each door is divided into 4 sections. On all of the doors, this is always just below part 2, just above part 4, and only moves once, with part 4's first movement. It goes straight from its position up to part 1. Without this part, the design and whole door wouldn't work. It wouldn't be very safe or weather protective either- there'd be a hole in the door!

• Door Part 4

This is the very bottom part of the door. Each door is divided into 4 sections. On all of the doors, this is always the lowest and it's the only one that moves more than once- it starts at its position, stops by part 2 (moves with part 3), and then goes up to part 1 (moves with part 2). Without this part, the design and whole door wouldn't work. It wouldn't be very safe or weather protective either- there'd be a hole in the door!

Inputs

• Pressure Sensor

This sensor tells the door 2 things, the first being whether or not the door should close (if there's any more people coming). It also lets us now if anyone that shouldn't be there is there by telling us if there is more people than there is cards sensed. It also tells the gears when to turn counter clockwise (the clockwise turning is told by the card sensor).

• Card Sensor

This is what give's the cue for the door to open. It's ideal because it makes sure only a select few can enter, yet it doesn't slow the line to enter down. It also lets the pressure sensor know if any more people are coming and how many people have come, as well as telling the gears to start turning clockwise- counter clockwise is left for the pressure sensor to tell.

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