Pimoroni’s Inky Frame 4.0″ is a small, low-power electronic paper display with a limited color palette, five buttons for controls, a microSD card reader for storage, and a Raspberry Pi Pico W at the heart of the system.
Designed for use as digital photo frame, digital signage, or a display for a home automation system or other applications, the Inky Frame 4.0″ can also be used for other DIY applications… as long as you take the screen’s limitations into account.
More about“eink,eink display,4.01,”'s article.