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WSAL11870 – 10.1inch HDMI LCD/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

Technical guide for the 10.1-inch IPS display (1024×600) with HDMI interface and resistive touch, designed for Raspberry Pi.

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Technical overview

  • The panel is a 10.1-inch IPS display with a resolution of 1024 × 600 pixels.
  • Screen output is provided via the HDMI input; the touch area additionally requires GPIO connections to the Raspberry Pi.
  • The Raspberry Pi exposes 40 GPIO pins while the screen exposes 26 pins; pin mapping must be observed when connecting.
  • Raspberry Pi Zero / Zero 2 W requires an additional HDMI cable because direct connection is not possible.
  • In config.txt, add the lines hdmi_group=2, hdmi_mode=87, and hdmi_cvt 1024 600 60 6 0 0.
  • To enable touch, use the overlay waveshare-ads7846, setting parameters such as penirq, xmin/xmax, ymin/ymax, speed, and swapxy.
  • Copy the file waveshare-ads7846.dtbo into the /boot/overlays/ directory.
  • Touch-area calibration is performed using evtest by adjusting the limits x_min, x_max, y_min, and y_max according to actual measured values.
  • Depending on the operating system, several methods are available for rotating the screen: via Screen Configuration under Bookworm, via xrandr or display_rotate under Bullseye/Kali, and via cmdline.txt under Ubuntu.
  • On Ubuntu, display rotation during command-line startup can be controlled through entries in /boot/firmware/cmdline.txt.

Commands and examples – verify before use:  

hdmi_group=2
hdmi_mode=87
hdmi_cvt 1024 600 60 6 0 0
dtoverlay=waveshare-ads7846,penirq=25,xmin=3900,xmax=200,ymin=200,ymax=3900,speed=50000,swapxy
sudo apt-get install evtest
sudo evtest
dtoverlay=waveshare-ads7846,x_min=164,x_max=4010,y_min=154,y_max=3758
xrandr -o 1
display_rotate=3
fbcon=rotate:0 video=HDMI-A-1:800x480M@60,rotate=0

Notes and version constraints

  • The exact values for touch calibration are device-specific and must be determined individually using evtest.
  • The method for screen rotation depends on the specific operating system and its version; the current environment should be checked before modifying configuration.
  • Whether the KMS or FKMS driver is loaded affects which rotation commands are available; this must be verified before applying them.
  • The referenced .deb packages are version-specific; ensure they are compatible with the installed system.
  • Statements about power consumption (550 mA with backlight on, 100 mA with backlight off) and operating temperature (0°C to 70°C) come from the FAQ and should be confirmed before use in critical environments.

Source and revision record

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