ขาย โมดูลสแกนลายนิ้วมือ Fingerprint Module optical fingerprint for Arduino / ESP32 ราคาที่ดีที่สุด

Fingerprint Module โมดูลสแกนลายนิ้วมือ optical fingerprint sensor fingerprint module โมดูลสแกนลายนิ้วมือ สามารถบันทึกและอ่านลายนิ้วมือสำหรับเฉพาะแต่ละคนได้ ความเร็วในการอ่านน้อยกว่า 1 วินาที สื่อสารแบบ Uart ที่ขา Rx,Tx ใช้ไฟเลี้ยง 3.3V Product Overview fingerprint module is an integrated fingerprint processing module that integrates the optical path and the fingerprint processing part. It has the characteristics of small size, low power consumption, simple interface, high reliability, fast recognition speed, good wet and wet finger adaptability, and fingerprint search. high speed. Module communication interface is USB and UART communication interface. Three working principles 1.Fingerprint characteristics The features extracted by the fingerprint algorithm from the obtained fingerprint image represent the fingerprint information. Fingerprint storage, comparison and search and so on through the operations to complete minutiae. 2. Fingerprint processing includes two processes: fingerprint login process and fingerprint matching process [where fingerprint matching is divided into fingerprint comparison (1: 1) and fingerprint search (1: N)]. When the fingerprint is registered, each fingerprint is entered twice, the images entered twice are processed, and the synthesized template is stored in the module. During fingerprint matching, through the fingerprint sensor, the fingerprint image to be verified is input and processed, and then compared with the fingerprint template in the module (if matched with a template specified in the module, it is called fingerprint comparison mode, ie 1: 1 Mode; if matching with multiple templates, it is called fingerprint search mode, ie 1: N mode), the module gives the matching result (pass or fail). Three technical parameters - Supply voltage: DC 3.3V - Supply current: Working current: <60mA - Peak current: <60mA - Fingerprint image entry time: <1.0 second - Window area: 15.3╳ 18.2 mm - Resolution: 500dpi