https://wiki.jw-tech.eu/index.php?action=history&feed=atom&title=WSAL19192_%E2%80%93_1.28inch_LCD_Module%2FenWSAL19192 – 1.28inch LCD Module/en - Versionsgeschichte2026-10-23T21:58:46ZVersionsgeschichte dieser Seite in JW Tech WikiMediaWiki 1.43.9https://wiki.jw-tech.eu/index.php?title=WSAL19192_%E2%80%93_1.28inch_LCD_Module/en&diff=1704&oldid=prevJWTechPublisher: Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex2026-09-05T22:35:10Z<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 />
This module is a round IPS LCD with 240×240 resolution, 65K color depth, and an SPI interface. It is driven by a GC9A01 controller and can be connected to Raspberry Pi, STM32, or Arduino.<br />
<br />
== Related products at JW Tech ==<br />
* [https://shop.jw-tech.eu/p/WSAL19192 WSAL19192 – 240×240, General 1.28inch Round LCD Display Module, 65K RGB]<br />
<br />
== Technical overview ==<br />
* Resolution: 240 × 240 pixels; color depth: 65K RGB (16-bit).<br />
* Operating voltage: 3.3 V / 5 V depending on the target system.<br />
* Interface: 4-wire SPI (MOSI, SCLK, CS, DC, RST, BL).<br />
* Controller: GC9A01 with 129,600 bytes of internal GRAM.<br />
* Display area: circle of Φ32.4 mm on a square pixel matrix; edge pixels are not shown.<br />
* Raspberry Pi wiring: DIN→GPIO19, CLK→GPIO23, CS→GPIO24, DS/DC→GPIO22, RST→GPIO13, BL→GPIO12.<br />
* STM32 example (F103RB): DIN→PA7, CLK→PA5, CS→PB6, DC→PA8, RST→PA9, BL→PC7.<br />
* Arduino UNO wiring: DIN→D11, CLK→D13, CS→D10, DC→D7, RST→D8, BL→D9.<br />
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'''Commands and examples – verify before use:''' <br />
<syntaxhighlight lang="text"><br />
sudo raspi-config<br />
sudo reboot<br />
sudo ./main 1.28<br />
sudo python3 1inch28_LCD_test.py<br />
</syntaxhighlight><br />
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== Notes and version constraints ==<br />
* Exact pin mapping may vary by board variant; verify actual connections before soldering.<br />
* On newer Raspberry Pi OS releases (e.g., Bookworm), only certain libraries are available; demo file compatibility must be confirmed.<br />
* The GC9A01 supports 12/16/18-bit data buses; the correct configuration for the chosen system must be adjusted manually.<br />
* Maximum power consumption at 3.3 V: 31.2 mA — size the power supply accordingly.<br />
* Commands in the examples refer to the provided demo files; versions may differ.<br />
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== Source and revision record ==<br />
* [https://www.waveshare.com/wiki/1.28inch_LCD_Module 1.28inch LCD Module - Waveshare Wiki]<br />
* Source revision: 77755<br />
* Captured: 2026-09-01T04:01:35+00:00<br />
* SHA-256: <code>6814b0b258fdaa6e5634e357a3cb307d62cec6d9aba03316ce1b75b5333f91b6</code></div>JWTechPublisher