Modify ST Case
To use Atari ST keyboard, see https://github.com/devonshire/arduino-atari-hid-keyboard and http://www.kevinpeat.com/atari_pi.html
Atari 1040STFM power supply is used to power on Rpi & Arduino
Metal Shield
Raspberry Pi 2 and Arduino Leonardo are used in my project
HDMI and USB Ports
Ready.
Rpi & Arduino