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2026-09-05T22:36:23Z

Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex

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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 overview of the Waveshare 2.4-inch TFT LCD with IL9341 controller and SPI interface for Raspberry Pi, STM32, and Arduino.

== Related products at JW Tech ==
* [https://shop.jw-tech.eu/p/WSAL18366 WSAL18366 – 240×320, General 2.4inch LCD Display Module, 65K RGB]

== Technical overview ==
* Resolution: 240 (vertical) × 320 (horizontal) pixels; display area 36.72 mm (H) × 48.96 mm (V); module size 70.5 × 43.3 mm
* Operating voltage: 3.3 V or 5 V; with a 5 V supply the logic level is 5 V, with a 3.3 V supply it is 3.3 V
* Driven by the on-board IL9341 controller through a four-wire SPI interface
* Supported per-pixel color formats: 12-bit RGB444, 16-bit RGB565, 18-bit RGB666; the demo uses RGB565
* Raspberry Pi wiring: VCC→3.3 V, GND→GND, DIN→MOSI (BCM 19), CLK→SCLK (BCM 23), CS→CE0 (BCM 24), DS/DC→BCM 22, RST→BCM 13, BL→BCM 12
* STM32 example based on STM32F103RBT6: DIN→PA7, CLK→PA5, CS→PB6, DC→PA8, RST→PA9, BL→PC7
* Arduino UNO example: DIN→D11, CLK→D13, CS→D10, DC→D7, RST→D8, BL→D9, VCC→5 V
* Default SPI mode: SPI0 (CPHA=0, CPOL=0); CSX enables the chip when low, D/CX distinguishes command (0) from data (1)
* On Raspberry Pi, enable the SPI interface via raspi-config and reboot
* Available demos: C (BCM2835, WiringPi), Python (RPi.GPIO + spidev), STM32, and Arduino

'''Commands and examples – verify before use:'''
<syntaxhighlight lang="text">
sudo raspi-config
sudo reboot
sudo wget http://www.airspayce.com/mikem/bcm2835/bcm2835-1.71.tar.gz
sudo tar zxvf bcm2835-1.71.tar.gz
cd bcm2835-1.71/
sudo ./configure && sudo make && sudo make check && sudo make install
sudo apt-get install wiringpi
wget https://files.waveshare.com/wiki/common/wiringpi-latest.deb
sudo dpkg -i wiringpi-latest.deb
gpio -v
sudo git clone https://github.com/WiringPi/WiringPi
cd WiringPi
sudo ./build
sudo su
wget https://github.com/joan2937/lg/archive/master.zip
unzip master.zip
cd lg-master
sudo make install
sudo apt-get update
sudo apt-get install python3-pip -y
</syntaxhighlight>

== Notes and version constraints ==
* Pin mapping varies by target system and board revision; verify the exact pin assignment before connecting
* On bookworm-based systems only the lgpio library is available; BCM2835 and WiringPi cannot be installed or used
* The Python demo requires no extra libraries beyond RPi.GPIO and spidev; PIL may optionally be needed for image display
* Different SPI modes (CPHA/CPOL) must match the controller; default is SPI0
* If the display stays blank: verify that SPI is enabled and consider disconnecting the BL pin if it has no output
* To change orientation: use Paint_SetRotate(Rotate) in C (only 0°, 90°, 180°, 270°); in Python, rotate(Rotate) allows any angle
* Incorrect use of GPIO libraries can cause refresh issues; rebooting the Raspberry Pi typically resolves this

== Source and revision record ==
* [https://www.waveshare.com/wiki/2.4inch_LCD_Module 2.4inch LCD Module - Waveshare Wiki]
* Source revision: 110851
* Captured: 2026-09-01T03:21:47+00:00
* SHA-256: <code>696a35a9b35460b4ca0a4c1f7f7cfd4d3eedf46014b41b4526438c540ded93d0</code>

WSAL18366 – 2.4inch LCD Module/en - Versionsgeschichte

JWTechPublisher: Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex