The core of the new machine is RetroPie on a Raspberry Pi 3, and the screen is a replacement iPad 2 LCD combined with a controller that accepts HDMI. The display matches the cabinet well and the ...
RetroPie is suited for dedicated emulation setups on devices like Raspberry Pi, offering extensive features beyond RetroArch.
He’s using one of these to run RetroPie, which actually turned out to be much easier than installing a more general-purpose Linux distribution and then running various emulation software piecemeal.