https://wiki.jw-tech.eu/index.php?action=history&feed=atom&title=WSAL18079_%E2%80%93_1.54inch_LCD_Module%2FenWSAL18079 – 1.54inch LCD Module/en - Versionsgeschichte2026-10-23T23:31:37ZVersionsgeschichte dieser Seite in JW Tech WikiMediaWiki 1.43.9https://wiki.jw-tech.eu/index.php?title=WSAL18079_%E2%80%93_1.54inch_LCD_Module/en&diff=1362&oldid=prevJWTechPublisher: Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex2026-09-05T22:28:19Z<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 1.54inch LCD module (240×240) uses an ST7789VW driver and a SPI interface; it is intended for Raspberry Pi, STM32, Arduino UNO and VisionFive2.<br />
<br />
== Related products at JW Tech ==<br />
* [https://shop.jw-tech.eu/p/WSAL18079 WSAL18079 – 240×240, General 1.54inch LCD Display Module, IPS, 65K RGB]<br />
<br />
== Technical overview ==<br />
* Resolution: 240(H) × 240(V) pixels on an IPS panel.<br />
* Display size: 27.72 mm × 27.72 mm; module dimensions 50 mm × 35 mm; pixel pitch 0.1155 mm per pixel.<br />
* Interface: 4-wire SPI with MOSI, SCLK, CS, DC, RST, BL plus VCC/GND.<br />
* Driver ST7789VW supports RGB444, RGB565 and RGB666; the demos use RGB565.<br />
* Supply voltage: 3.3 V or 5 V depending on target system; supply and logic levels must be consistent.<br />
* Raspberry Pi connection via a PH2.0 8-pin cable to GPIO pins 19, 23, 24, 22, 13, 12.<br />
* STM32F103RBT6 demo uses PA7/PA5/PB6/PA8/PA9/PC7 for DIN/CLK/CS/DC/RST/BL.<br />
* Arduino UNO uses D11/D13/D10/D7/D8/D9 for the same signals.<br />
* VisionFive2 uses board pins 19/23/24/22/13/12 according to the pin mapping table.<br />
<br />
'''Commands and examples – verify before use:''' <br />
<syntaxhighlight lang="text"><br />
sudo raspi-config<br />
sudo reboot<br />
sudo make clean && sudo make -j 8<br />
sudo ./main 1.54<br />
sudo python3 1inch54_LCD_test.py<br />
python3 1inch54_LCD_test.py<br />
</syntaxhighlight><br />
<br />
== Notes and version constraints ==<br />
* Voltage levels: VCC must match the logic level (3.3 V or 5 V), otherwise the module may not function properly.<br />
* Version-sensitive notes: On Bookworm only lgpio is available; bcm2835/wiringPi cannot be installed there. Bullseye requires 'apt' instead of 'apt-get'.<br />
* The C/Python demos cover multiple screen sizes; for this module use parameter 1.54.<br />
* SPI timing (CPHA=0, CPOL=0) from the datasheet must be observed when porting.<br />
* Exact pinout can vary by board variant; verify the actual hardware before wiring.<br />
<br />
== Source and revision record ==<br />
* [https://www.waveshare.com/wiki/1.54inch_LCD_Module 1.54inch LCD Module - Waveshare Wiki]<br />
* Source revision: 105201<br />
* Captured: 2026-09-01T03:01:33+00:00<br />
* SHA-256: <code>f5e9d25876da166a624430673e96bb50a9d4ec159982ab0a9d32cb7d07c10f8b</code></div>JWTechPublisher