https://wiki.jw-tech.eu/index.php?action=history&feed=atom&title=WSAL17746_%E2%80%93_2.9inch_NFC-Powered_e-Paper%2FenWSAL17746 – 2.9inch NFC-Powered e-Paper/en - Versionsgeschichte2026-10-23T22:25:19ZVersionsgeschichte dieser Seite in JW Tech WikiMediaWiki 1.43.9https://wiki.jw-tech.eu/index.php?title=WSAL17746_%E2%80%93_2.9inch_NFC-Powered_e-Paper/en&diff=2042&oldid=prevJWTechPublisher: Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex2026-09-05T22:41:41Z<p>Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex</p>
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'''Documentation notice:''' 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 module combines a 2.9-inch e-paper display (296×128 resolution) with NFC power delivery and no battery. Content is transmitted wirelessly via an NFC-enabled smartphone or reader and updated on the display.<br />
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== Related products at JW Tech ==<br />
* [https://shop.jw-tech.eu/p/WSAL17746 WSAL17746 – 2.9inch Passive NFC-Powered e-Paper, No Battery]<br />
* [https://shop.jw-tech.eu/p/WSAL17764 WSAL17764 – 2.9inch NFC-Powered e-Paper Evaluation Kit, Wireless Powering &amp; Data Transfer]<br />
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== Technical overview ==<br />
* Display resolution: 296 × 128 pixels; dot pitch 0.138 mm × 0.138 mm<br />
* No backlight required: e-paper retains last displayed content indefinitely without power<br />
* Contains no internal power source such as a battery – suitable for applications with limited power supply<br />
* Content can be customized and controlled at any time using a smartphone<br />
* Housing made of ABS plastic with good strength and toughness<br />
* Companion Android app for editing and managing display content<br />
* Suitable for equipment labels, shelf labels, information storage<br />
* Current PCB version Rev2.2: replaced NFC chip on motherboard, display updated using a fast flashing method<br />
* Before use: update the mobile app and ST25R3911B NFC Board program to the latest versions<br />
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'''Commands and examples – verify before use:''' <br />
<syntaxhighlight lang="text"><br />
NFC-Bereich des Telefons auf die Antennenfläche auf der Rückseite des E-Papers legen<br />
ST25R3911B-NFC-Board: USB-Anschluss an PC oder 5V-Versorgung anschließen<br />
Monochromes BMP auf TF-Karte kopieren und in das Kartenslot des NFC-Boards einlegen<br />
Im Menü „Update E-paper SD“ auswählen und ein passendes Bild wählen<br />
Alternativ: „Update E-paper UART“ für serielle Übertragung von BMP-Bildern verwenden<br />
</syntaxhighlight><br />
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== Notes and version constraints ==<br />
* The stated Android app does not support Samsung, Google, or Sony devices according to the source; compatibility with other models must be verified individually<br />
* Initial device password is 1234 – change before deployment<br />
* Do not move the phone during transmission; limited NFC range can cause refresh failures<br />
* Image resolution must exactly match 128 × 296 (special case per FAQ)<br />
* Operating conditions: temperature 0–50 °C, humidity 35–65 % RH; storage below 30 °C, max. 6 months<br />
* After unpacking: assemble within 72 hours at 20 °C ± 5 °C and 50 ± 5 % RH<br />
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== Source and revision record ==<br />
* [https://www.waveshare.com/wiki/2.9inch_NFC-Powered_e-Paper 2.9inch NFC-Powered e-Paper - Waveshare Wiki]<br />
* Source revision: 99241<br />
* Captured: 2026-09-01T02:38:34+00:00<br />
* SHA-256: <code>1509512641521ee65bc72ba9c603506d6b16182febccd4f49f68862c18551d0f</code></div>JWTechPublisher