The video demonstrates the use of e-Paper/e-Ink displays that use the SPI Bus. It begins by demonstrating on a 4.2" display and Weather Forecast data from Weather Underground, then it goes through the connections for an ESP32/EPS8266, then discusses library setup and then finally power-consumption (zero if disconnected) and typical battery duration using an ESP in sleep mode.
Code: https://github.com/G6EJD/ESP32-8266-e...
Library: https://github.com/ZinggJM/GxEPD
I purchased my display for £23 from Ailexpress: https://www.aliexpress.com/item/400x3...
Please note this channel is funded by me I take no samples or funding from any suppliers, everthing I do is for the education of others and to help with learning new skills.