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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.<br />
<br />
== Summary ==<br />
The Waveshare Pico ePaper 2.13 is a 2.13-inch e-ink display module (250 × 122 pixels, black/white) with an SPI interface for the Raspberry Pi Pico. It runs at 3.3 V, has a partial refresh time of about 0.3 s and a full refresh time of about 2 s.<br />
<br />
== Related products at JW Tech ==<br />
* [https://shop.jw-tech.eu/p/WSAL19406 WSAL19406 – 2.13inch E-Paper E-Ink Display Module for Raspberry Pi Pico, 250×122, Black / White, SPI]<br />
<br />
== Technical overview ==<br />
* Resolution: 250 × 122 pixels; dot pitch 0.194 × 0.194 mm; active area 48.55 × 23.71 mm.<br />
* Operating voltage: 3.3 V; standby current &lt; 0.01 µA; refresh power typical 26.4 mW.<br />
* Interface: SPI mode CPHL=0, CPOL=0 (SPI0); signals: CS, DC, SCLK, SDIN, RST, BUSY.<br />
* Pico pin mapping: DIN→GP11 (MOSI), CLK→GP10 (SCK), CS→GP9, DC→GP8, RST→GP12, BUSY→GP13, VCC→VSYS, GND→GND.<br />
* Pixel definition: 1 bit per pixel (1 = white, 0 = black); 1 byte encodes 8 pixels; data stored MSB-first.<br />
* Full refresh takes about 2 s and produces brief flicker – this is normal.<br />
* Partial refresh takes about 0.3 s; after several partial refreshes, perform one full refresh or the display may become permanently faulty.<br />
* Do not leave the screen under continuous high voltage: use sleep mode or power off when idle.<br />
* The FPC cable is fragile: bend only horizontally, not vertically; protect the panel from impacts.<br />
* Demo codes are available via wget or git clone; the C project is compiled with CMake and flashed as epd.uf2.<br />
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'''Commands and examples – verify before use:''' <br />
<syntaxhighlight lang="text"><br />
sudo wget https://files.waveshare.com/upload/5/5a/Pico_ePaper_Code.zip<br />
unzip Pico_ePaper_Code.zip -d Pico_ePaper_Code<br />
git clone https://github.com/waveshare/Pico_ePaper_Code.git<br />
cmake -DPICO_BOARD=pico -DPICO_PLATFORM=rp2040 ..<br />
make -j9<br />
</syntaxhighlight><br />
<br />
== Notes and version constraints ==<br />
* Stated refresh times and power figures are measured values; actual results may vary.<br />
* After sleep mode, the driver must be re-initialized before sending new image data.<br />
* If the displayed image looks wrong, verify the configured image width and height.<br />
* Older driver boards support 3.3 V only; newer versions (V2.1+) include level conversion for 3.3 V and 5 V – confirm board version before use.<br />
* For long-term storage: clear the screen via software and store it face-up.<br />
* If the program hangs on 'busy': check wiring and SPI parameters (clock rate, mode).<br />
<br />
== Source and revision record ==<br />
* [https://www.waveshare.com/wiki/Pico-ePaper-2.13 Pico e-Paper 2.13 - Waveshare Wiki]<br />
* Source revision: 69271<br />
* Captured: 2026-09-01T04:13:26+00:00<br />
* SHA-256: <code>deb0d3a8c60af3b7cad8fdd7e0465b9f110a2524e65fd60026456bceda05b2ee</code></div>JWTechPublisher