4 model

Free

Raspberry Pi Case with GPIO Access

Thingiverse

Free

Octoprint and GPIO Control Tutorial!

Thingiverse

Free

Raspberry Pi 4 B GPIO / Octoprint Ready 2020 Rail Case! Includes Slimmer Top!

Thingiverse

Free

OctoPi Case for Prusa i3 MK2S and MK3 with exposed GPIO ports

Thingiverse