Arduino Class – Using Adafruits Fingerprint Sensor


Come join us at The Forge Makerspace (located in the North Branch Library, Denton, TX) to learn about Using Adafruits Fingerprint Sensor. In this class we will be covering the following:

  • Fingerprint sensor Part 1: About (5:40) This sensor is internally a sophisticated device, that contains a 32-bit microprocessor dedicated to do digital signal processing of fingerprint images. A library developed by Adafruit makes this sensor very easy to use. Connect it to your Arduino using serial or software serial pins, and you can start enrolling and recognising fingerprints within minutes. In this first part of the lecture, I discuss the device and its features.
  • Fingerprint sensor Part 2: Wiring, registering, recognizing(10:30) In this second part, you will learn how to connect the device to the Arduino and enroll and recognise fingerprints using a couple of the included sketches.
  • Fingerprint sensor Part 3: Demo app with an electric lock(7:35) In this third part you learn a small demo application that involves an electric door lock. I use the fingerprint sensor to energise the coil in the door lock and grand or deny access to my lab (when eventually the lock is installed to my door).

Parts Needed:

Course work for this class comes from Arduino Step By Step which has over 20 hours of content in 110 lectures. These classes are designed for anyone interested in learning electronic design and C programming. No experience is required. Access to the course material is free at our meetups. If you wish to access the material outside the meetup see our coupons page to get a discount from our sponsor.

Submitted by David Riewe. Email:

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