Capacitive Fingerprint Reader (WS-13694) STM32F105, commercial fingerprinting algorithm, semiconductor sensor

Overview

The Capacitive Fingerprint Reader is a standard fingerprinting module designed for secondary development, allows fast and stable fingerprint verification.

Based on a high-speed digital processor STM32F105R8, combined with high-security commercial fingerprinting algorithm, and advanced semiconductor sensor, the Capacitive Fingerprint Reader becomes a simple but smart integration module, provides functionalities like fingerprint enrolling, image processing, feature finding, template generating and storing, fingerprint matching and searching, etc.

Features

• Easy to use by some simple commands, you don't have to know any fingerprint technology, or the module inter structure/calculation
• Commercial fingerprinting algorithm, stable performance, fast verification
• Sensitive detection, just touch the collecting window lightly, without pressing
• Allows to freely input/output fingerprint images, fingerprint feature file and other fingerprinting actions
• Dual communication, UART or USB
• Processor will enter sleep and wake up when detecting, achieves low power consumption
• Comes with rich related resources (software on PC, development SDK, tools, and examples for Raspberry/Arduino/STM32)

Applications

• Fingerprint lock
• Fingerprint safe deposit box
• Access control system
• Clock in and out

Specifications

Parameter	Value
Processor (CPU)	STM32F105
Sensor	Semiconductor (capacitive)
Module dimension (mm)	45 x 30
Sensor dimension (mm)	33.4 x 20.4
Image	DPI 508
Image resolution	192 x 256
Sensing area (mm)	9.6 x 12.8
Fingerprint capacity	1000 (expandable)
Security level	0-9 low to high security, 5 by default
Matching time	1s
False acceptance rate	0.0001%
False rejection rate	0.01%
Dynamic current	<40mA
Operating voltage	3.3V-5V
Communication	UART or USB
Anti-electrostatic	aerial discharge: ± 15KV
	contact discharge: ± 8KV

Dimension

Development Resources

Wiki : www.waveshare.com/wiki/Capacitive_Fingerprint_Reader

Selection Guide

	UART Fingerprint Reader	Capacitive Fingerprint Reader
Type	Optical fingerprinting module	Capacitive fingerprinting module
Pros	low cost, durable, excellent anti-electrostatic	small collecting area, high precision, good at detection and verification
Cons	large dimension, low precision, interfered by lighting	High environmental requirement (temperature, humidity, dust, alkaline air)
Sensor life time	10 years	3-5 years (about 100,000 times on normal condition)
Use condition	More sensitive for wet fingers	More sensitive for dry fingers
Applicable products	Used frequently, like access control system	Used not often while requiring high precision, like fingerprinting lock
	Generally, optical modules are used in low-end products, while capacitive module are suit for high-end products