It looks to be a pretty handy board, which will be available on his Tindie store. To demonstrate the add-on, he programmed his ESP32-CAM and connected it to his enormous ping pong ball video wall.

Take the ESP32-CAM, a board that started appearing on the market in early 2019. On paper, the thing is amazing: an ESP32 with support for a camera and an SD card, all for less than $10.