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WSAL16103 – 5.5inch HDMI AMOLED/en

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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.

Summary

The 5.5-inch HDMI AMOLED display provides a 1080×1920 resolution and a capacitive touch panel with tempered glass (up to 6H hardness). It connects via USB and HDMI and can be used with Raspberry Pi or as a computer monitor under Windows.

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Technical overview

  • Resolution: 1080 × 1920 pixels; default portrait orientation.
  • 5-point capacitive touch panel behind a tempered glass cover.
  • Interfaces: USB for power/touch and HDMI for video; optional 3.5 mm jack for audio.
  • Compatible with Raspberry Pi OS, Ubuntu, Kali, and Retropie; on the Pi the resolution must be manually set in config.txt.
  • As a PC monitor it supports Windows 7, 8, 8.1, 10, and 11.
  • For PC use, connect the touch port via USB; in multi-monitor setups the touch effect applies to the primary monitor by default.
  • Display rotation is either via xrandr or via display_rotate in /boot/config.txt depending on the loaded driver.
  • Touch rotation does not follow display rotation automatically and must be calibrated separately or rotated via the hardware button.

Commands and examples – verify before use:  

max_framebuffer_height=1920
config_hdmi_boost=10
hdmi_group=2
hdmi_force_hotplug=1
hdmi_mode=87
hdmi_timings=1080 1 80 16 80 1920 1 4 10 16 0 0 0 60 0 146950000 3
sudo apt-get update
sudo apt-get full-upgrade
xrandr -o 1
display_rotate=3
sudo apt-get install xserver-xorg-input-libinput
sudo apt install xserver-xorg-input-synaptics
sudo mkdir /etc/X11/xorg.conf.d
sudo cp /usr/share/X11/xorg.conf.d/40-libinput.conf /etc/X11/xorg.conf.d/
Option "CalibrationMatrix" "0 1 0 -1 0 1 0 0 1"
Option "CalibrationMatrix" "-1 0 1 0 -1 1 0 0 1"
Option "CalibrationMatrix" "0 -1 1 1 0 0 0 0 1"
sudo reboot

Notes and version constraints

  • The AMOLED glass is very fragile without a protection case; when plugging/unplugging HDMI and USB, hold the PCB firmly first and avoid applying pressure to the glass.
  • Use M2.5 screws no longer than 4 mm; longer screws can damage the AMOLED panel.
  • Prolonged display of static images risks burn-in; keep static content under 1 hour.
  • On Raspberry Pi the resolution must be manually configured, otherwise the display may behave abnormally.
  • Touch rotation does not automatically follow display rotation; calibrate or use the hardware rotate button.
  • If PC USB ports cannot supply enough power, connect an external 5 V/2 A adapter to the display's power port.
  • A flashing green light indicates the device is powered on but receiving no HDMI signal.
  • Software-controlled brightness requires re-flashing firmware; see the resource section for details.

Source and revision record

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