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WSAL10207 – 4inch RPi LCD (A)/en

Aus JW Tech Wiki

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

Quick overview of the 4-inch resistive touch display for Raspberry Pi, covering hardware connection, driver installation and calibration.

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Technical overview

  • Resolution: 480 × 320 pixels
  • Resistive touch control
  • Compatible with all Raspberry Pi versions (plugs directly into the 40-pin header)
  • Connection via a 26-pin connector on the display
  • Driver installed by cloning the 'LCD-show' repo and running './LCD4-show'
  • Screen rotation configurable via './LCD4-show X' (X = 0, 90, 180 or 270)
  • Touch calibration using the 'xinput-calibrator' tool
  • Optional virtual keyboard via 'matchbox-keyboard'

Commands and examples – verify before use:  

git clone https://github.com/waveshare/LCD-show.git
cd LCD-show/
chmod +x LCD4-show
./LCD4-show
sudo ./LCD4-show X
sudo apt-get install xinput-calibrator
sudo apt-get install matchbox-keyboard

Notes and version constraints

  • Compatibility with newer Bookworm images requires manual configuration; refer to the user manual for details.
  • Running 'apt-get upgrade' may break LCD functionality; remove 'dtoverlay=ads7846' from config.txt if needed.
  • Network connection is required to install drivers and calibration tools.
  • Exact power consumption and operating temperature are not clearly stated in the provided text – verify against manufacturer specifications.

Source and revision record

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