https://wiki.jw-tech.eu/index.php?action=history&feed=atom&title=WSAL20903_%E2%80%93_UART_Fingerprint_Sensor_%28D%29%2Fen 2026-10-23T23:32:01Z Versionsgeschichte dieser Seite in JW Tech Wiki MediaWiki 1.43.9 https://wiki.jw-tech.eu/index.php?title=WSAL20903_%E2%80%93_UART_Fingerprint_Sensor_(D)/en&diff=1728&oldid=prev 2026-09-05T22:35:38Z

<p>Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex</p> <p><b>Neue Seite</b></p><div>__NOINDEX__<br /> &#039;&#039;&#039;Documentation notice:&#039;&#039;&#039; This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.<br /> <br /> == Summary ==<br /> A compact, round capacitive fingerprint sensor with an integrated Cortex processor and a UART interface. It supports enrolling, imaging, feature extraction, template storage and matching via simple UART commands.<br /> <br /> == Related products at JW Tech ==<br /> * [https://shop.jw-tech.eu/p/WSAL20903 WSAL20903 – Round-Shaped All-In-One Capacitive Fingerprint Sensor (D), Cortex Processor, 360° Verification]<br /> <br /> == Technical overview ==<br /> * The sensor uses a high-performance Cortex processor together with a commercial fingerprint algorithm for stable and fast identification.<br /> * Capacitive sensing element: touching the collection area is sufficient for detection.<br /> * Resolution 508 DPI; image size 160 x 160 pixels at 8-bit grayscale.<br /> * Sensor diameter approx. R15.5 mm; the narrow stainless-steel rim enables 360° omni-directional verification.<br /> * Embedded human sensor: the processor automatically enters sleep mode and wakes up on touch.<br /> * Built-in UART connector (19200 baud) for easy connection to platforms such as STM32 or Raspberry Pi.<br /> * Power consumption: operating current below 50 mA, sleep current below 16 µA.<br /> * Operating environment: -20 °C to +70 °C, humidity 40–85 % RH (no condensation).<br /> * Storage environment: -40 °C to +85 °C, humidity below 85 % RH (no Condensation).<br /> <br /> == Notes and version constraints ==<br /> * The exact command list for Type D is not fully specified in the source; according to the wiki most commands match those of Type C – please check the manufacturer documentation.<br /> * Pinout: Do not wire by cable color because colors can vary between production lots. Verify each line against its definition before connecting.<br /> * The RST input controls sleep mode: High = active, Low = powered down. WAKE outputs a high signal when a touch is detected while in sleep mode.<br /> * Reliability of 360° verification may vary with mounting height, tilt and ambient light – please verify in the target device.<br /> <br /> == Source and revision record ==<br /> * [https://www.waveshare.com/wiki/UART_Fingerprint_Sensor_(D) UART Fingerprint Sensor (D) - Waveshare Wiki]<br /> * Source revision: 78184<br /> * Captured: 2026-09-02T04:26:05+00:00<br /> * SHA-256: &lt;code&gt;bf59ef59aaf3fb46ba419937819d6947a1f6d40b427df8e4cc7432e30d4dfdf5&lt;/code&gt;</div>

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