Artigos‎ > ‎Configuração de Hardware‎ > ‎RaspBerry Pi‎ > ‎Acessórios‎ > ‎

Leitor Impressão Digital

Primeiramente gostaria de salientar que não sou o autor principal do conteúdo deste artigo. A minha intenção é de mostrar o que outros autores tem realizado (referenciando links para o conteúdo original) neste blog até como um guia pessoal para uso próprio e ainda compartilhar minhas anotações e pequenas modificações que realizo no conteúdo, desejando que possa ajudar mais alguém em algum lugar.
First and foremost, I take no credit for any of this post’s content. I am really just taking what others have done (which I have links to bellow) and am putting it on my blog for a personal reference and hopefully the small changes that I made to their guides will help someone somewhere.


Item specifics
Model Number:
Brand Name:
Product Description

Optical fingerprint reader

1. Integrated image collecting and algorithm chip together, ALL-in-One
2. Fingerprint module can conduct secondary development, can be embedded into a variety of end products

3. Users can conduct secondary development, can be embedded into a variety of end products, such as: access control, attendance, safety deposit box, car door locks
4. Low power consumption, low cost, small size, excellent performance
5. Professional optical technology, precise module manufacturing technics
6. Good image processing capabilities, can successfully capture image up to resolution 500 dpi


Fingerprint sensor type: Optical
Sensor Life: 100 million times

Static indicators: 15KV

Backlight:  red green

Interface: UART(TTL logical level)

RS232 communication baud rate: 4800BPS~115200BPS changeable

Dimension: 57*23*21.5

Image Capture Surface 15×18(mm)

Verification Speed:  0.3 sec

Scanning Speed: 0.5 sec

Character file size:  256 bytes

Template size:  512 bytes

Storage capacity: 120

Security level: 5 (1,2,3,4,5(highest))

False Acceptance Rate (FAR) :≤0.0001%

False Rejection Rate (FRR): ≤0.1%

Resolution 500 DPI

Voltage :3.6-6.0 VDC 

Working current: Typical ≤90 mA, Peak 150mA

Matching Method:  1: N

Operating Envirement Temperature: -20 to 45 centigrages.




Optical Fingerprint Reader Fingerprint lock Sensor Module


  • Features:

    Secure your project with biometrics - this all-in-one optical fingerprint sensor will make adding fingerprint detection and verification super simple. These modules are typically used in safes - there's a high powered DSP chip that does the image rendering, calculation, feature-finding and searching. Connect to any microcontroller or system with TTL serial, and send packets of data to take photos, detect prints, hash and search. You can also enroll new fingers directly - up to 162 finger prints can be stored in the onboard FLASH memory. There's a red LED in the lens that lights up during a photo so you know its working.
    There are basically two requirements for using the optical fingerprint sensor. First is you'll need to enroll fingerprints - that means assigning ID #'s to each print so you can query them later. Once you've enrolled all your prints, you can easily 'search' the sensor, asking it to identify which ID (if any) is currently being photographed.

    You can enroll using the windows software (easiest and neat because it shows you the photograph of the print) or with the sketch (good for when you don't have a windows machine handy or for on-the-road enrolling)

    Enrolling new users with Windows

    The easiest way to enroll a new fingerprint is to use the Windows software. The interface/test software is unfortunately windows-onlybut you only need to use it once to enroll, to get the fingerprint you want stored in the module.

    First up, you'll want to connect the sensor to the computer via a USB-serial converter. The easiest way to do this is to connect it directly to the USB/Serial converter in the . To do this, you'll need to upload a 'blank sketch' this one works well:

    // this sketch will allow you to bypass the Atmega chip // and connect the fingerprint sensor directly to the USB/Serial // chip converter. // Red connects to +5V // Black connects to Ground // White goes to Digital 0 // Green goes to Digital 1 void setup() {} void loop() {}

    Wire up the sensor as described in the sketch comments after uploading the sketch. Since the sensor wires are so thin and short, we stripped the wire a bit and melted some solder on so it made better contact but you may want to solder the wires to header or similar if you're not getting good conteact. When you plug in the power, you should see the red LED blink to indicate the sensor is working.

    SFGDemo Software download:

    Start up the SFGDemo software and click Open Device from the bottom left corner. Select the COM port used by the
  • Package Contents
    1 x 

    Optical Fingerprint Reader Fingerprint lock Sensor Module