Difference between revisions of "UART Fingerprint Reader"

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|website_en=[http://www.waveshare.com/UART-Fingerprint-Reader.htm Website]
 
|website_en=[http://www.waveshare.com/UART-Fingerprint-Reader.htm Website]
 
|interface1 = UART
 
|interface1 = UART
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|related= {{Product List| Modules/Sensors/Fingerprint / Sound}}
 
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== Introduction ==
 
== Introduction ==

Revision as of 12:30, 20 January 2022

UART Fingerprint Reader
UART-Fingerprint-Reader

UART Fingerprint Reader, onboard processor STM32F205, commercial fingerprinting algorithm, optical sensor
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Introduction

UART Fingerprint Reader, onboard processor STM32F205, commercial fingerprinting algorithm, optical sensor

More

Resources

FAQ

 Answer:

In normal operation, the module would echo corresponding characters after receiving a valid command. Here are some notices:

  1. The module may make a sound “beep” after powered up, indicating it is working well.
  2. The users can build communication between the module and the PC via a USB-to-UART interface. It is recommended to use the matching USB-to-UART module provided by Waveshare. For more information, please visit: CP2102_USB_UART_Board_(type_A) and PL2303_USB_UART_Board_(type_A)
  3. Select a appropriate Baud rate (Default: 19200)
  4. The serial ports should be in common-ground connection.
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 Answer:

This MINI USB interface is used for firmware upgrading, but not power supply. In normal operation, this interface should be keep unconnected.

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 Answer:

The pin BL is used for controlling the backlight on the fingerprint collector and reading the backlight state. In most applications, this pin can be unconnected, since the module can control the backlight automatically itself and the external system does not need to control this pin.

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 Answer:

In the test, you should deselect the option upload eigenvalue. Because the eigenvalue(s) will be uploaded to the PC but not written into the fingerprint reader, if the option upload eigenvalue is selected.

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 Answer:
No, this chip is mainly used to execute commercial fingerprint algorithms and cannot be used for secondary development. Users need to connect an external MCU or use a PC (USB to TTL serial port) to control the fingerprint module.

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 Answer:
The command to capture images must be used at 9600 baud.

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 Answer:
Dynamic power consumption: 18mA, static power consumption: 0.

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Support

Support

If you require technical support, please go to the Support page and open a ticket.