FYI: I try to update mainly on the Github repository
Currently It utilizes the ESP32 WiFi and the SPIFFS Filesystem to cache 24bit uncompressed BMP files. It then matches the 7 target colors and sends the data to the screen.
Also provides auto WiFi connect and a REST based API to set images.
ToDo:
Initial FW could utlize some Setup step to easily setup the WiFi params via a simple browser page.