Biometric security with the Arduino Uno

A DIY Maker by the name of Grant Gibson has designed a biometric security box, or more simply, a lockable toy box with fingerprint access used to store his son’s toy car collection.

The heart of the system? An Atmel-powered Arduino Uno (ATmega328) and Optical Fingerprint Sensor from Adafruit. As can be seen in the video below, the electronics are all housed in the lid of the box, neatly protected by a sheet of 2mm clear acrylic.

“The box uses a standard hobby servo as the latch to lock and unlock the lid based on the fingerprint detector. Fingerprints are initially registered directly into the Flash memory of the fingerprint scanner using the free SFG Demo software on a Windows PC,” Gibson explained in a recent blog post.

“In order to give the box a battery life measured in months or years rather than hours, I used a Pololu SV power switch (I got mine from Proto-Pic) between the battery pack and the Arduino. This switch allows a standard hardware button to power the Arduino on and off. But more importantly, a separate logic input on the Pololu allows the Arduino to turn itself off automatically after a predefined timeout in the script.”

According to Gibson, the locking mechanism is simple but effective: a notch carved out of the standard servo horn hooks round a screw mounted inside the box base.

“The servo ‘locks’ at approximately 90 degrees, at which point it is tightly wrapped around the screw. Because the screw head is chamfered, the servo horn gets a really tight grip, pulling the box lid down hard against the base,” he continued. “And because the servo horn is pointing straight down at 90 degrees the box stays ‘locked’ shut even when the servo is turned off.”

Interested in learning more about Grant Gibson’s biometric security project? You can check out his official page here.

7 thoughts on “Biometric security with the Arduino Uno

  1. Pingback: Grant Gibson » Biometric security toy box

  2. Pingback: Biometric security with the Arduino Uno | Kenneth Carnesi

  3. Pingback: Poetically Pristine

  4. security system dallas

    Whether you need a lock change, lock pick, a residential locksmith, vehicle locksmith, commercial locksmith or any other unlocking or security service,
    you can be guaranteed that a team of certified professional locksmiths can be relied on and can actually afford you a much safer life.
    IR illuminators can be bought separately to apply to already installed products.
    The main panel of the home burglar alarm system informs i – Alert services or
    central monitoring services to inform the house owner of some intruder’s presence in their house-hold.

    Like

    Reply
  5. head soccer mod apk

    I’ve been browsing on-line greater than three hours nowadays,
    yet I by no means discovered any fascinating
    article like yours. It is lovely price sufficient for me.

    In my opinion, if all site owners and bloggers made just right
    content material as you probably did, the web shall be much more useful than ever before.

    Like

    Reply
  6. security system dallas

    Mediation: This is one of the most significant and cheaper alternative to hiring individual lawyers.
    If the situation or altercation presents itself in an act of misconduct at work.
    Taking an advantage of such a situation of car accident attorney, Jacksonville is making money with the huge number
    of cases filed each day.

    Like

    Reply

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s