Fingerprint Secure Box

Here's a tutorial on how to make a fingerprint sensor-secure lock box.

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Step 1: Parts List

Step 2: Circuit Layout

The transistor acts as a switch for the solenoid and because the solenoid requires 12 volts, the diode helps make sure that back current doesn't fry the Arduino.

Solenoid: Pin 2

The light for the button: Pin 3

The input and output for the finger print sensor: Pins 11 and 12

Step 3: Code

This is the sketch that will run the whole circuit.

In order to add fingerprints, the library given with the sensor has an example called "enroll" which you can use to enroll fingerprints onto the sensor.

Step 4: Assembly and Testing

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    5 Discussions


    1 year ago


    I am doing the fingerprint sensor for my final project and I need help with the coding because whenever i try the code that attached it never works.


    2 years ago

    i need help

    email me as soon as possible please

    Very cool security box. Just like a high tech spy gadget.

    Also, if you would like to make the video easier for people to view, you can upload it to a site like YouTube. Then you can embed it on the page with the "Embed Video" tool in the step editor. That will make it so that the video is already loaded on the page and people will be able to view it without having to download it.

    2 replies

    Thanks so much, just changed it now. I was remembering the days when uploading a video to youtube took hours so I just avoided it. But it was very quick lol.