Product description: Capacitive fingerprint reader (B) - UART/USB - Waveshare 20679
A capacitive fingerprint reader developed by Waveshare. The reader module is equipped with a connector microUSB and UART interface. It is based on a high performance Cortex processor with commercial high security fingerprint algorithms and an advanced solid state fingerprint sensor. The module is designed as an intelligent module to extend the capabilities of the design with fingerprint capture, image processing, template generation and storage, matching and fingerprint search. Powered by 3.3 V to 5 V.
Capacitive fingerprint reader.
Fingerprint reader with microUSB connector.
Main features of the fingerprint reader module
- Easy to use with a few simple commands
- Commercial fingerprint algorithm, stable performance, fast identification
- Sensitive detection, just lightly touch the identification area, no pressure
- Allows free input / output of fingerprint images, fingerprint function files and other fingerprint activities
- Dual communication, UART or USB
Connection of the module
Module is equipped with microUSB port and 5-pin connector for UART communication. It is powered by 3.3 V or 5 V. Its leads are:
- VCC - supply voltage 3.3 V or 5 V
- GND - ground
- TX - UART transmitter line
- RX - UART receiver line
- RST - RESET pin
Pinouts of fingerprint reader module.| Specification of fingerprint reader | |
|---|---|
| Sensor | Semiconductor (capacitive) |
| Image | DPI 508 |
| Resolution | 208 x 288 px |
| Greyscale | 256 (8-bit) |
| Measuring area | 14.6 x 10.6 mm |
| Fingerprint capacity | 3000 |
| Security Level | 1-5 configurable, 3 by default, higher value, lower FAR (False Acceptance RATE) but higher FRR (False Rejection Rate) |
| Encryption Key | 64-bit |
| Image Acquisition Rate | 20 fps |
| Match time | 0,5 s |
| Current consumption | up to 40 mA |
| Power supply voltage | 3.3 V or 5 V |
| Communication port | USB or UART |
| ESD | SD IEC 61000-4-2 LEVEL 4 positive/negative air discharge 15KV |
| Transmission rate | configurable: 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600 bps 115200 bps default |
| Module dimensions | 34 x 28.5 mm |
| Sensor dimensions | 33.4 x 20.4 mm |
Useful links |
