Epaper display from Waveshare: ED078kc2 Raw 7.8 parallel epaper
Shades of gray:
158.184mm × 118.638mm
Please check our Arduino esp32 C++ Firmware for Epaper to use the image provided with CALE in your ESP32 SPI display. If you want to build a custom Firmware using Espressif IDF own framework we highly recommend to check our project Cale-Idf.