[ajsnigrutin]

Where's the printer part?

You could connect this to a cheap chinese termal ESC/POS printer and print out the image too... there are probably libraries availble that do most of the esp32->print work.

[unwind]

It's a software implementation (on the ESP32 microcontroller) of something that the Gameboy will think is a printer. You print to it, and images are made accessible on the ESP's web server instead of on paper.

[iamjackg]

I actually did exactly what you suggest a couple years ago.

https://github.com/iamjackg/esp32-phomemo-gameboy-printer

[jwrallie]

My immediate thought also, I have seen some very cheap thermal printers on Aliexpress and the like that could be used for this purpose.