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WSAL18434 – 10.3inch e-Paper HAT/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 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.

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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:  

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

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

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