Finger Vein Scanner Module (A)

Finger Vein Scanner Module (A) UART, USB Finger vein identification

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Primary Attribute Category: {{{userDefinedInfo}}}: {{{userdefinedvalue}}} Brand: Waveshare

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Onboard Interfaces UART USB

Related Products

Overview

Introduction

This is a high-precision integrated finger vein module. The module is equipped with a 32-bit ARM Cortex-M4F core, operating at a high frequency of up to 144MHz, supporting floating-point algorithm calculations and the DSP instruction set. The module adopts a fully enclosed design, with no other exposed components except for the screw terminal, achieving a waterproof rating of IP56. The module port design supports compatibility with fingerprint industry standards and is adaptive, enabling seamless integration of user applications and development. It is suitable for the application of straight plate smart locks, slide smart locks, embedded locks, glass door locks, apartment rental locks, various small smart cabinets, simple access control and other products.

Specifications

SOC	144MHZ 32-bit ARM Cortex-M4F microprocessor
User capacity	100 ID
Recognition speed	< 1s
Matching method	1:1 or 1:N
Vein template data	Single template ≤ 1K bytes
False Acceptance Rate (FAR)	< 0.0001% (at high security level)
False Rejection Rate (FRR)	0.01% (at higher security level)
Communication interface	USB: Adaptive USB drive-free (Windows)
	UART: 3.3V TTL, default baud rate: 57600bps
Operating voltage	3.3V (±3%)
Operating current	43.0mA
Standby current	≤ 2uA
Dimensions	59.0 × 26.0 × 15.0 (mm)
Enclosure	ABS + PC
Fire rating	UL94-5VB
Waterproof rating	IP56 (except for the port part)

Onboard Interfaces

This module features a 9PIN interface, offering both TTL (UART) and USB pins. When users use it, they can choose different cables for connection according to their own usage.

No.	Name	Function	Specification
01	USB-DP	USB2.0 data D+
02	USB-DN	USB2.0 data D-
03	VCC-3.3V	External 3.3V power input positive	±3%
04	VCC-GND	External 3.3V power input negative
05	TTL-RXD	Asynchronous TTL serial port receive	3.3V level
06	TTL-TXD	Asynchronous TTL serial port transmit	3.3V level
07	VCC-3.3V	External 3.3V main power input positive	Used in low power mode
08	WAKE-ON	Touch signal wake-up output	Active at high level
09	TCH-3.3V	External normal 3.3V power input positive	Used in low power mode

Hardware description

Connection

For two types of communication interfaces, we provide various cables to facilitate users in adjusting according to the products they are using.

1. Finger vein module
2. 3.3V adapter board
3. USB cable
4. MX1.25 4PIN cable
5. MX1.25 4PIN double-headed cable
6. MX1.25 9PIN cable

UART connection

If you need to use the UART serial port to communicate, you can use the MX1.25 9PIN cable to connect the module to the motherboard, and connect the following pins through the corresponding pin definition table above, here take the Raspberry Pi motherboard as an example:

Pin No.	Finger-Vein-Scanner	Motherboard (Raspberry Pi)
03	VCC-3.3V	3.3V power pin
04	VCC-GND	GND
05	TTL-RXD	UART_TXD
06	TTL-TXD	UART_RXD

Note: If the user customizes the motherboard interface, the provided MX1.25 4PIN dual header cable can also be directly connected.

USB connection

If a user needs to use a USB interface for communication, they can connect using the provided 3.3V adapter board and USB cable. Here, the connection is made to the computer host.

Connect the MX1.25 4PIN (9-to-4) cable to the module, connect the other side to the 3.3V adapter board, and then use the USB cable to connect it to the computer.

Note: The power supply voltage of the module is 3.3V, if the user connect through other cables, please note that 3.3V power supply should be used, otherwise the device cannot be used normally.

Finger Placement

Correct placement:

  Place gently parallel to collection window   Separate the left and right fingers

Wrong placement:

  Finger not touching the touch point      Press down the finger

  Finger touch glass sheet directly        Place with your finger bent upwards       Place with your finger bent downwards

Software description

Host device software

For the finger vein module, we provide a host device software for users to test and use conveniently. Users can download the test software from the Resources section, which supports the Windows system.

• Connect the device to the computer via USB according to the hardware connection instructions
• Open the test software
• Under normal circumstances, the device will automatically be recognized after being connected
  1. In the absence of interference from other devices, the port number defaults to USB1
  2. The device number defaults to 0
  3. The baud rate remains at the default 115200
  4. Click to connect device
  5. Click "Get empty ID” and the software will automatically fill in the available ID number
  6. Click "Vein registration” and place your fingers three times according to the voice and message prompts
  7. After the vein registration is successful, click "1:N Verification" to do a matching test on the fingers
  8. After testing, clicking "Close Device" can disconnect the communication with the device

Note: More software features to be updated

Connection to the embedded motherboard

To be updated...

Resources

• Finger-vein-scanner Test software

Support

Technical Support

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