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Step 2Parts List
SX48 Proto Board ($15) - http://www.parallax.com/Store/Microcontrollers/SXProducts/tabid/138/CategoryID/15/List/0/SortField/0/Level/a/ProductID/362/Default.aspx - This is the microcontroller that is the 'brain' of the project. Almost any microcontroller would work just as well.
Magnetic Card Reader ($3.50) - http://www.allelectronics.com/make-a-store/item/MCR-12/MAGNETIC-CARD-READER/-/1.html - This is the card reader that was used to read the school IDs.
Keypad ($7.50) - http://www.allelectronics.com/make-a-store/item/KP-12/12-BUTTON-KEYPAD/-/1.html - This is the keypad that is used to type in passwords.
Servo ($5) - This is what unlocks the door.
Screen (???) - The screen to display the currently typed code. This was recycled from an older device and therefore not purchased.
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