https://wiki.jw-tech.eu/index.php?action=history&feed=atom&title=WSAL24783_%E2%80%93_4.3inch_DSI_QLED%2FenWSAL24783 – 4.3inch DSI QLED/en - Versionsgeschichte2026-10-23T22:04:17ZVersionsgeschichte dieser Seite in JW Tech WikiMediaWiki 1.43.9https://wiki.jw-tech.eu/index.php?title=WSAL24783_%E2%80%93_4.3inch_DSI_QLED/en&diff=2825&oldid=prevJWTechPublisher: Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex2026-09-06T07:57:07Z<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 />
Brief overview of installing and configuring the 4.3inch QLED display with DSI interface on a Raspberry Pi.<br />
<br />
== Related products at JW Tech ==<br />
* [https://shop.jw-tech.eu/p/WSAL24783 WSAL24783 – 4.3inch QLED Display, DSI Interface, 800 × 480, Integrated Structure, Toughened Glass Panel]<br />
<br />
== Technical overview ==<br />
* Resolution: 800 x 480 pixels; capacitive touch panel supporting 5-point touch; toughened glass rated up to 6H hardness.<br />
* Supported boards: Raspberry Pi 5, CM4, CM3+, CM3, Pi 4B, 3B+, 3A+, 3B, 2B, B+, A+.<br />
* Connection for older Pi models (up to 4B/CM4): use an FFC cable to the 15-PIN DSI port.<br />
* Connection for newer boards (Pi 5/CM4/CM3+/CM3): use a DSI-Cable-12cm cable to the 22-PIN DSI1 port.<br />
* Software setup via official image: add dtoverlay=vc4-kms-v3d for older systems; for Pi 5/CM4 it is recommended to update to the latest system version after flashing and reboot.<br />
* Backlight control via terminal: echo X &#124; sudo tee /sys/class/backlight/*/brightness, where X ranges from 0 to 255.<br />
* Display rotation: via GUI in Trixie/Bookworm; in Lite versions via video=DSI-1:800x480M@60,rotate=90 in /boot/cmdline.txt.<br />
* Touch rotation: in Bookworm via a udev rule (99-waveshare-touch.rules); in Bullseye/Buster via an Xorg setting (CalibrationMatrix).<br />
<br />
'''Commands and examples – verify before use:''' <br />
<syntaxhighlight lang="text"><br />
dtoverlay=vc4-kms-v3d<br />
dtoverlay=vc4-kms-dsi-7inch<br />
dtoverlay=vc4-kms-dsi-7inch,dsi0<br />
sudo apt-get update<br />
sudo apt-get full-upgrade -y<br />
sudo reboot<br />
echo 100 | sudo tee /sys/class/backlight/*/brightness<br />
video=DSI-1:800x480M@60,rotate=90<br />
display_rotate=1<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 />
<br />
== Notes and version constraints ==<br />
* The exact DSI interface (DSI0 or DSI1) depends on the board; for Pi 5/CM4, DSI1 is default while DSI0 is only available on certain models.<br />
* Specific rotation and touch settings are OS-dependent (Trixie, Bookworm, Bullseye, Buster, Stretch/Jessie). Verify your Linux version before running commands.<br />
* Updating to the latest system version requires a network connection.<br />
* The exact location of the large capacitors for troubleshooting must be confirmed using the visual material.<br />
* Some steps require manual confirmation by a technician.<br />
<br />
== Source and revision record ==<br />
* [https://www.waveshare.com/wiki/4.3inch_DSI_QLED 4.3inch DSI QLED - Waveshare Wiki]<br />
* Source revision: 110234<br />
* Captured: 2026-09-05T02:56:38+00:00<br />
* SHA-256: <code>e9ed38bc4793e0df8f6e3b7667e38a77f116599b8cb31bb7111f520e82270fc0</code></div>JWTechPublisher