For some time now I have been thinking about making a large 128x128 LED Display for the PICO-8 and finally I did it.

What i used for this project:

• P2.5 RGB pixel panel HD display 128x128 (https://www.aliexpress.com/item/4000057689390.html)
• Raspberry PI 4
• Analogue of Adafruit RGB Matrix HAT for connecting Raspberry with LED Matrix (https://www.amazon.com/Adafruit-RGB-Matrix-HAT-Raspberry/dp/B00SK69C6E/)
• 2.1mm Plug to Screw Terminal Block to connect the pixel panel power supply to the RGB Matrix HAT (https://www.amazon.com/Adafruit-Male-DC-Power-Adapter/dp/B00KAE41RE)
• Additional longer hub75e 16pin cable to daisy-chain martrices inside pixel panel diagonally

Selected pixel panel is well assembled, it is easy to arrange all Raspberry PI guts inside case, but:

• It has a pre-installed LED matrix controller, but it is not required for this project, so this is an extra cost
• 16 pin cables too short to daisy chain 2 matrices for use with RGB Matrix HAT
• For now I don`t understand if its possible to draw enough power from pixel panel unit to drive Raspberry PI so I have to use a separate type-c power adapter for it

For displaying PICO-8 on LED screen i wrote simple C++ program and couple bash scripts, you can find them on github: https://github.com/jenissimo/pico8-led

If you want to make such a screen yourself - feel free to ask questions :)