Quantity   Component name
1 × Arduino (Uno, better Leonardo for HID emulation)
1 × LCD-Dotmatrix display 20x2
4 × Arcade Switches or
1 × Joystick (Arcade or filigran for operating by tongue)
1 × modded Webcam for Eyetracking (later updates)
1 × Raspberry Pi 3B+ for Eyetracking