[DIY Engineering] uses Fusion3D to model the case, bezel and circuit board, the latter of which is a 4 layer board designed in Eagle and sent off to be fabbed. The buttons, D-pad, screen and ...

Such is the case of this DIY OLED handheld, which uses an SBC to create ... By default, it uses an LCD screen, but you can also upgrade to an OLED screen to create the suitably named RetrOLED.