https://wiki.jw-tech.eu/index.php?action=history&feed=atom&title=WSAL24037_%E2%80%93_3.5inch_480x800_LCD%2FenWSAL24037 – 3.5inch 480x800 LCD/en - Versionsgeschichte2026-10-23T21:51:57ZVersionsgeschichte dieser Seite in JW Tech WikiMediaWiki 1.43.9https://wiki.jw-tech.eu/index.php?title=WSAL24037_%E2%80%93_3.5inch_480x800_LCD/en&diff=2751&oldid=prevJWTechPublisher: Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex2026-09-06T07:55:36Z<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 />
Technical reference for the 3.5-inch IPS LCD (480×800) with 5-point capacitive touch. The display connects via HDMI and is detected as a USB input device. It supports Raspberry Pi, Jetson Nano, and Windows PCs.<br />
<br />
== Related products at JW Tech ==<br />
* [https://shop.jw-tech.eu/p/WSAL24037 WSAL24037 – 3.5inch IPS Capacitive Touch LCD Display, 480×800, Adjustable Brightness]<br />
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== Technical overview ==<br />
* Resolution: 480×800 pixels; 3.5-inch diagonal, IPS panel<br />
* Touch: up to 5-point capacitive, connected via 5 V USB<br />
* Connections: standard HDMI for video, USB for touch input<br />
* Brightness: up to 300 cd/m², adjustable via on-unit button<br />
* Power draw: ~2 W; supply: 5 V (4.75–5.25 V), minimum current ≥ 500 mA<br />
* Operating temperature: 0–60 °C; storage: −10–70 °C<br />
* Housing dimensions: 88.87 × 52.56 × 7.15 mm; weight: 55 g<br />
* Mounting pillar thread size: M2.5<br />
* Raspberry Pi: manual resolution setting required in config.txt (hdmi_mode=87, hdmi_cvt 480 800 60)<br />
* Windows: calibrate touch via “Calibrate the screen for pen or touch input” in Control Panel<br />
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'''Commands and examples – verify before use:''' <br />
<syntaxhighlight lang="text"><br />
hdmi_force_hotplug=1<br />
hdmi_group=2<br />
hdmi_mode=87<br />
hdmi_drive=1<br />
hdmi_cvt 480 800 60 6 0 0 0<br />
video=HDMI-A-1:400x1280M@60,rotate=90<br />
display_rotate=1 #1: 90; 2: 180; 3: 270<br />
xinput map-to-output <touch-ID> <HDMI-ID><br />
ENV{ID_INPUT_TOUCHSCREEN}=="1", ENV{LIBINPUT_CALIBRATION_MATRIX}="0 -1 1 1 0 0"<br />
Option "CalibrationMatrix" "0 1 0 -1 0 1 0 0 1"<br />
</syntaxhighlight><br />
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== Notes and version constraints ==<br />
* The exact EDID timing values (pixel clock 30.60 MHz, etc.) only matter if the system cannot auto-detect EDID; if auto-detected, manual setup is unnecessary.<br />
* The config.txt commands must match the actual resolution; the source lists 480×800 but the rotation examples use 400×1280 – verify the correct value before applying.<br />
* When multiple monitors are connected, touch defaults to the main screen; remapping requires the xinput command manually.<br />
* Touch rotation calibration matrices differ by OS version (Bookworm vs. Bullseye/Buster); select the method matching your installed system.<br />
* The power supply must deliver at least 500 mA; insufficient current can cause boot failure or persistent display faults.<br />
* Prolonged storage in high-temperature/high-humidity environments should be avoided, as it may permanently damage the panel.<br />
<br />
== Source and revision record ==<br />
* [https://www.waveshare.com/wiki/3.5inch_480x800_LCD 3.5inch 480x800 LCD - Waveshare Wiki]<br />
* Source revision: 105256<br />
* Captured: 2026-09-04T03:49:50+00:00<br />
* SHA-256: <code>91c7487636784ffc829d4e7c85051f7b16678a46109267d23872671ada04f27f</code></div>JWTechPublisher