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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 10.3-inch e-Paper HAT with integrated IT8951 driver, 1872×1404 resolution, USB/SPI/I80 interfaces and Raspberry Pi integration instructions.

== Related products at JW Tech ==
* [https://shop.jw-tech.eu/p/WSAL18434 WSAL18434 – 10.3inch e-Paper e-Ink Display HAT For Raspberry Pi, 1872×1404, Black / White, 16 Grey Scales, USB / SPI / I80]
* [https://shop.jw-tech.eu/p/WSAL18436 WSAL18436 – 10.3inch e-Paper e-Ink Raw Display, 1872×1404, Black / White, 16 Grey Scales, Parallel Port, without PCB]

== Technical overview ==
* Resolution: 1872 × 1404 pixels; display size: 209.66 × 157.25 mm; dot pitch: 0.112 × 0.112 mm
* Operating voltage: 5 V; full refresh < 1 s; refresh power ≈ 1.2 W; standby power ≈ 0.1 W
* Colors: black/white with 16 grayscale levels (1–4 bit)
* Interfaces: SPI, I80, USB, I2C; GPIO header matches the 40-pin Raspberry Pi standard
* Raspberry Pi SPI pin mapping: MISO P9, MOSI P10, SCK P11, CS P8 (active low), RST P17 (active low), HRDY P24 (low when busy)
* The DIP switch must be set to SPI mode before starting SPI communication
* Library choice: BCM2835 recommended for Pi 4; lg library for Pi 5; gpiod optional
* Demo invocation: “sudo ./epd -1.50 1” (read the VCOM value from the FPC, mode 1 as parameter)

'''Commands and examples – verify before use:'''
<syntaxhighlight lang="text">
sudo raspi-config
sudo nano /boot/config.txt
sudo reboot
wget http://www.airspayce.com/mikem/bcm2835/bcm2835-1.60.tar.gz
tar zxvf bcm2835-1.60.tar.gz
cd bcm2835-1.60
./configure
make
sudo make check
sudo make install
wget https://github.com/joan2937/lg/archive/master.zip
unzip master.zip
cd lg-master
make
sudo make install
sudo apt-get update
sudo apt install gpiod libgpiod-dev
sudo apt-get install p7zip-full
sudo wget https://files.waveshare.com/upload/8/80/IT8951_20200319_Release.7z
7z x IT8951_20200319_Release.7z -O./IT8951
</syntaxhighlight>

== Notes and version constraints ==
* The VCOM value must be read from the FPC before execution; the exact value is model-dependent and requires confirmation
* Color deviation may occur at low temperatures; stabilize at 25 °C for 6 hours before refreshing
* Displaying the same image for long periods can cause irreversible burn-in; change the image every 24 hours
* Direct sunlight dries out charged particles – irreversible; indoor use recommended only
* Hot-plugging is not supported; connect all cables before powering on
* The FPC is fragile; reinforce it with tape during development
* USB development on Windows requires an NDA with the Waveshare team; currently unavailable for individual users
* Refresh time and power figures are experimental values; actual performance may vary

== Source and revision record ==
* [https://www.waveshare.com/wiki/10.3inch_e-Paper_HAT 10.3inch e-Paper HAT - Waveshare Wiki]
* Source revision: 100972
* Captured: 2026-09-01T03:25:34+00:00
* SHA-256: <code>44e2ef30037a89f83ade5576253076ea84e5b1fa311fec3755730717260188ae</code>

WSAL18434 – 10.3inch e-Paper HAT/en - Versionsgeschichte

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