The M5Stack PaperDIY Assembly Kit features a 4.7 inch, 960 x 540 E Ink display, a 140 mAh battery, and a board with an ESP32-S3 chip, microSD card reader, USB and FPC, and an optional 3D-printer case. It sells for about $25 and up. https://www.cnx-software.com/2026/10/18/m5stack-paperdiy-kits-pair-an-esp32-s3-mcu-with-a-4-7-inch-e-paper-display/ #A_DIY_E_Ink_Display_Kit #M5Stack_Paper_DIY #M5Stack