Raspberry Pi 4

This Raspberry Pi 4 is used as the main controller of my USB4VC. This is a modular project to convert USB/Bluetooth controllers into peripherals that old computer could understand. To do that, the USB4VC is made into 3 part, the main board that contains buttons and a tiny oled screen, the controller (a Raspberry Pi connected through the GPIO port) and the interface module. The magic happens in the interface module, as it’s how it can send signals as PS2 commands, or ADB stuff. I only have two modules, one for old IBM, which contains two PS2 ports (Mouse and Keyboard), but also a game port. The other is an Apple one, with two ADB ports, one for the Macintosh lineup (the phone jack) and one for the Lisa (the headphone jack). I wish I could have an interface for Sun peripherals, because it uses proprietary system, a mix of serial communication through a mini-din socket.