Grove - Fingerprint Sensor
Introduction
5.0V UART
The Finger Print Sensor is one optical fingerprint sensor which will make fingerprint
detection and verification adding super simple.There’s a high powered DSP chip
AS601 that does the image rendering, calculation, feature-finding and searching. 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 which will light up during
taking photos so that you know its working condition. It is easy to use and by far the
best fingerprint sensor you can get.
Specifications
• Supply voltage: 3.6~6.0 V
• Operating current(Max) : 120 mA
• Fingerprint imaging time: 1.0 S
• Match Mode: Compare Mode 1:1
• Search Mode: 1:N
• Storage capacity: 162 templates
• False Acce pt ance Rate : 0.0 01 % (S ecur i ty l evel 3)
• False Reject Rate ：1.0% (Security level 3)
• Baud r ate ：9600, 19200, 28800, 38400, 57600bps (default is 57600)
Pin Number
Name
Type
Function Description
Positive Power Supply Input Terminal(Line
color:Red)
Serial data output, TTL logic levels(Line
color: Yellow)
Serial data input, TTL logic levels(Line
color: White)
4
GND
-
Signal ground(Line color: Black)
Raspberry
Pi
LinkIt
ONE
• Interface：TTL Serial
• Work Temperature：-20 ~ +50 ℃
• Interface
1 Vin in
2 TD out
3 RD in
Platforms Supported
Arduino Wio BeagleBone
Caution
The platforms mentioned above as supported is/are an indication of the module's hardware or theoritical compatibility. We only
provide software library or code examples for Arduino platform in most cases. It is not possible to provide software library /
demo code for all possible MCU platforms. Hence, users have to write their own software library.
Getting Started
The Finger Print Sensor module is typically used in safes - there’s a high powered
DSP chip that does the image rendering, calculation, feature-find ing 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 that can be stored in the onboard FLASH memory. There’s a
red LED in the lens which will light up during taking photos so that you know its
working condition.
• Connect the Sensor to the Digital Port 2 of the Grove - Base Shiel d.
• Plug the Grove - Base Shield into Ard ui no and conn ect Ar duino to PC by usi ng a USB
cable.
When you plug in the power, you can see the red LED blink which indicates the
sensor is working.
• Downlo ad th e Fi nger Pri nt Se nsor Libr ar y and Unzip it into the libraries file of Arduino IDE
by the path: ..\arduino-1.0.1\libraries.
The library can enroll and search so its perfect for any project. It can help you get
running in under 10 minutes. There are basically two requirements for using the
optical fingerprint sensor. First one, 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)
has currently been photographed.
• Open the enroll code directly by the path: File->Example->FingerPrint->Enroll.
• Upload the code into Arduino.
• Start up Serial Tool and Select the ComNum and BaudRate used by the Arduino.
• Select the “SendNew” option. Send the ID # you want to use. You can use up to 162 ID
numbers. And it will ask you to press the finger to the sensor. At the moment, you should
see the red LED bl i nk.
• If your press is OK, you could see the following message. You will then have to repeat
the process, to get a second clean print. Use the same finger! On success you will see
the message.
• If there’s a problem such as a bad print or image, you’ll have to do it again.
Once you have the finger enrolled, it’s a good idea to do a quick test to make sure it
can be found in the database.
• Open the demo code:fingerprint and upload it.
• When prompted, press a different/same finger to the sensor. If it is the same finger, you
should get a match with the ID # as show below.
• If it is not a finger in the database, This serial port will output nothing.
Tip
More details about Grove modules please refer to Grove System
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