Hardware

    An Arduino development board embed all the components of the lock. You will find below a detailed list of all the components you need to buy:

    Components of the lock

    1. An Arduino Ethernet or an Arduino Uno with an Ethernet Shield
    2. USB Serial Adapter if you don't use the Arduino Uno
    3. An Arduino development board (Proto Shield)
    4. An RFID reader RDM6300
    5. 4N35 optocoupler with a socket
    6. Three resistors 220 ohm
    7. A resistor 68 ohm
    8. A buzzer
    9. A red LED and a green LED
    10. Various cables to connect everything on the development board.
    11. A Micro SD card
    12. 1x 3 pin and 1x 5 pin 2.54mm Female Header
    13. 3x 3-pin terminal

    Of course, you will also need welding equipment :-)

    Pictures of the components

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    Arduino Ethernet

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    Arduino USB Serial Adapter

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    Arduino Proto Shield

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    RFID reader RDM6300

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    3x 220 Ohm resistor

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    68 Ohm resistor

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    Optocoupler 4N35

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    Socket for the 4N35

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    3x 3-pin terminal

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    Magnetic buzzer

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    Green and red LEDs

    2.54mm Female Header
    2.54mm Female Header

    Female Header

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    Cables several colors

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    Micro SD Memory Card

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    Some RFID tags

    Price

    The price depends on the hardware you have already own. If you have to purchase all the elements of the lock, the total price will be between 110$ with original Arduino hardware and 50$ with Arduino copy.