Quelltext der Seite WSAL13512 – e-Paper Driver 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 ==
The universal e-Paper driver HAT connects Waveshare SPI e-Paper raw panels to Raspberry Pi, Jetson Nano, STM32 or Arduino via a 40-pin GPIO header. The current Rev2.3 uses a PWR pin for power control and an RST pin only for reset.

== Related products at JW Tech ==
* [https://shop.jw-tech.eu/p/WSAL13512 WSAL13512 – Universal e-Paper Raw Panel Driver HAT, Supports Most Waveshare SPI e-Paper Raw Panels]

== Technical overview ==
* Based on the 40-pin Raspberry Pi GPIO header; also supports Jetson Nano and other boards
* Communication over 3-wire SPI and 4-wire SPI; onboard voltage converter compatible with 3.3 V/5 V logic levels
* Dimensions: 65 mm × 30.2 mm; mounting hole 3.0 mm
* Rev2.3: new PWR pin for power on/off, RST now only for reset; smaller inductor package; PH2.0 8-pin connector replaced by GH1.25 9-pin
* Display configuration via resistor switch: 0.47 Ω (B) for larger panels (e.g. 2.13" D, 2.7", 2.9" D, 4.01" F, 4.2" C, 5.65" F, 5.83", 7.5"), 3 Ω (A) for smaller panels (e.g. 1.54", 2.13", 2.66", 2.9", 3.7", 4.2", 13.3")
* If the display is abnormal, flip the switch to the other position
* Raspberry Pi connection: plug directly onto the 40-PIN header or connect via a 9-PIN cable using the pin mapping table
* Raspberry Pi pin mapping: VCC→3.3V, GND→GND, DIN→MOSI(19), CLK→SCLK(23), CS→CE0(24), DC→22, RST→11, BUSY→18, PWR→12
* STM32 connection via 9-PIN cable: DIN→PA7, CLK→PA5, CS→PA4, DC→PA2, RST→PA1, BUSY→PA3, PWR→PA6
* Arduino UNO: DIN→D11, CLK→D13, CS→D10, DC→D9, RST→D8, BUSY→D7; Mega2560: DIN→D51, CLK→D52, CS→D10, DC→D9, RST→D8, BUSY→D6

'''Commands and examples – verify before use:''' 
<syntaxhighlight lang="text">
ls /dev/spi*
</syntaxhighlight>

== Notes and version constraints ==
* The source contains placeholders such as &#123;&#123;&#123;name2&#125;&#125;&#125; and &#123;&#123;&#123;userDefinedInfo&#125;&#125;&#125;; these values are unavailable and must be filled in manually.
* Exact compatibility with a given panel depends on setting the resistor switch correctly – if malfunction occurs, the switch must be flipped.
* Modifying SPI settings in /boot/config.txt and epdconfig.py is version-dependent and requires manual confirmation.
* When changing stack/heap sizes in the STM32 startup file for models other than F103ZET6, adjustments are needed.
* Color variation in tri-color panels is normal; storing displays face-up reduces discoloration.
* The listed resources (YouTube, GitHub projects) are third-party content without warranty.

== Source and revision record ==
* [https://www.waveshare.com/wiki/e-Paper_Driver_HAT E-Paper Driver HAT - Waveshare Wiki]
* Source revision: 110989
* Captured: 2026-08-30T03:50:43+00:00
* SHA-256: <code>1a1959294f37ca5c18b78d1c325d236513189f9b0ed0f2b4485808e22a17014c</code>