R307 Fingerprint Module consists of optical fingerprint sensor, high-speed DSP processor, high-performance fingerprint alignment algorithm, high-capacity FLASH chips and other hardware and software composition, stable performance, simple structure, with fingerprint entry, image processing, fingerprint matching, search and template storage and other functions. The fingerprint algorithm extracts features from the acquired fingerprint image and represents the fingerprint information. The storage, comparison, and search of fingerprints are all done by operating fingerprint features. Fingerprint processing includes two processes: fingerprint registration process and fingerprint matching process (in which fingerprint matching is divided into fingerprint comparison (1:1) and fingerprint search (1:N) two ways). When the fingerprint is registered, two fingerprints are entered for each fingerprint, and the input image is processed twice. The synthesis module is stored in the module. When the fingerprint is matched, the fingerprint sensor is used to input the fingerprint image to be verified and processed, and then it is compared with the fingerprint module in the module (if it is matched with a module specified in the module, it is called fingerprint comparison mode, ie, 1:1 mode. If matching with multiple modules is called fingerprint search, ie 1:N mode, the module gives the matching result (pass or fail). Pinouts :- Pin# Pin Name Details 1 5V Regulated 5V DC 2 GND Common Ground 3 TXD Data output - Connect to MCU RX 4 RXD Data Input - Connect to MCU TX 5 TOUCH Active Low output when there is touch on sensor by finger 6 3.3V Use this wire to give 3.3V to sensor instead of 5V USB Cable Connections are 5V/D+/D-/GND (Optional) Features: Integrated image collecting and algorithm chip together, ALL-in-One. The fingerprint reader can conduct secondary development, can be embedded into a variety of end products. Low power consumption, low cost, small size, excellent performance. Resolution: 500dpi Fingerprint image entry time: <1.0 seconds Window area: 15.3×18.2MM Communication Interface: USB/UART

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