https://wiki.jw-tech.eu/index.php?action=history&feed=atom&title=WSAL17745_%E2%80%93_2.13inch_NFC-Powered_e-Paper%2Fen 2026-10-23T23:09:41Z Versionsgeschichte dieser Seite in JW Tech Wiki MediaWiki 1.43.9 https://wiki.jw-tech.eu/index.php?title=WSAL17745_%E2%80%93_2.13inch_NFC-Powered_e-Paper/en&diff=1676&oldid=prev 2026-09-05T22:34:36Z

<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 /> The 2.13inch NFC-powered e-paper module is a passive display with a resolution of 250 x 122 pixels. It is powered wirelessly via NFC and transfers image data from an NFC-enabled smartphone or reader to the display. The module contains no battery.<br /> <br /> == Related products at JW Tech ==<br /> * [https://shop.jw-tech.eu/p/WSAL17745 WSAL17745 – 2.13inch Passive NFC-Powered e-Paper, No Battery]<br /> * [https://shop.jw-tech.eu/p/WSAL17763 WSAL17763 – 2.13inch NFC-Powered e-Paper Evaluation Kit, Wireless Powering &amp;amp; Data Transfer]<br /> <br /> == Technical overview ==<br /> * Resolution: 250 x 122; dot pitch: 0.194 × 0.194 mm; active display area: 23.70 × 48.55 mm.<br /> * Overall dimensions: 65.35 × 40.05 × 12.70 mm; housing made of ABS plastic.<br /> * Display: black/white, no backlight; last displayed content remains visible without power.<br /> * Refresh time approx. 2 s (excluding transfer time); viewing angle &amp;gt;170°.<br /> * Interface: SPI; power supply exclusively via NFC.<br /> * Android app requires Android 4.0+; per source, it does not support Samsung, Google, or Sony devices.<br /> * iOS app “NFC E-Tag” available via the App Store.<br /> * ST25R3911B NFC board acts as a reader/writer for image refresh via TF storage or serial transfer.<br /> <br /> == Notes and version constraints ==<br /> * PCB Rev2.2 replaced the NFC chip; before use, update both the mobile app and the ST25R3911B program — version-sensitive steps require human confirmation.<br /> * Initial device password is 12345678; security settings are context-dependent and should be verified.<br /> * NFC transfer requires stable positioning; moving the phone during refresh causes failures.<br /> * Image resolution must exactly match the display (2.13inch listed as 122 x 250 in some contexts); mismatches prevent correct rendering.<br /> * Operating conditions: 0–50°C, 35–65% RH; storage below 30°C for up to 6 months; after unpacking, complete assembly within 72 hours.<br /> <br /> == Source and revision record ==<br /> * [https://www.waveshare.com/wiki/2.13inch_NFC-Powered_e-Paper 2.13inch NFC-Powered e-Paper - Waveshare Wiki]<br /> * Source revision: 104337<br /> * Captured: 2026-09-01T02:37:16+00:00<br /> * SHA-256: &lt;code&gt;b6bfa0d5fb8260c0099eece5955d6c2cb0fe0a994547c0b8fd3ee1148fbc9be3&lt;/code&gt;</div>

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