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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 Pico e-Paper 2.66 B is a 2.66-inch e-ink module for the Raspberry Pi Pico with a resolution of 296 × 152 pixels and red/black/white colors. It connects via SPI, requires 3.3 V, and has very low power consumption; the display retains the last image even when unpowered.<br />
<br />
== Related products at JW Tech ==<br />
* [https://shop.jw-tech.eu/p/WSAL20053 WSAL20053 – 2.66inch E-Paper E-Ink Display Module (B) for Raspberry Pi Pico, 296×152, Red / Black / White, SPI]<br />
<br />
== Technical overview ==<br />
* Size: 2.66 inch; screen-only outline 71.820 × 36.304 mm, driver board 74.0 × 37.0 mm<br />
* Resolution: 296 × 152 pixels; pixel pitch 0.202 × 0.203 mm<br />
* Colors: Red, Black, White; greyscale levels: 2<br />
* Operating voltage: 3.3 V; communication interface: SPI<br />
* Full refresh takes about 15 s; refresh power 42.4 mW typical; sleep current &lt; 0.01 µA<br />
* A brief flicker during full refresh is normal<br />
* Color rendering uses two bitplanes: one for black/white and one for red/white; each byte controls 8 pixels<br />
* Pico pinout over an 8-pin cable: VCC→VSYS, GND→GND, DIN→GP11 (MOSI), CLK→GP10 (SCK), CS→GP9, DC→GP8, RST→GP12, BUSY→GP13<br />
* Sample code is provided as C and Python projects; to flash, hold BOOTSEL while connecting USB and copy the UF2 file to the recognized Pico drive<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 />
cp epd.uf2 /media/pi/RPI-RP2/<br />
</syntaxhighlight><br />
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== Notes and version constraints ==<br />
* Quoted refresh time and power figures come from test runs; real-world values may differ<br />
* Check wiring and SPI settings (baud rate, mode) before use to avoid getting stuck on the BUSY pin<br />
* After deep sleep the module must be re-initialized in software; on first wake-up a partial refresh can occur – clear the screen beforehand<br />
* When connecting the Pico, mind the orientation (the USB logo indicates direction)<br />
* The demo code supports several display types; uncomment the matching type in main.c<br />
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== Source and revision record ==<br />
* [https://www.waveshare.com/wiki/Pico-ePaper-2.66-B Pico e-Paper 2.66 B - Waveshare Wiki]<br />
* Source revision: 74239<br />
* Captured: 2026-09-02T03:12:31+00:00<br />
* SHA-256: <code>5562880c5611e786c6491b3e090dec167cd709926a17d26ef163ade9b33b07d8</code></div>JWTechPublisher