Waveshare 2.13-in Flexible E-Paper E-Ink Display Module 212x104 for Raspberry Pi Pico, SPI

The 2.13-in Flexible E-Paper E-Ink Display Module 212x104 for Raspberry Pi Pico, SPI utilizes microcapsule electrophoretic technology for displaying, the principle is: charged particles suspended in the clear fluid will move to sides of microcapsule when an electric field is applied, making the microcapsule become visible by reflecting ambient light, just as traditional printed paper.