Needs More Buttons! How to create an excellent MAME arcade cabinet in many simple steps – SideQuesting
Control layout. 2 player, 6 button, trackball and spinner. | Arcade control panel, Retro arcade machine, Retro arcade
How to map joystick controls in MAME for use with HYPERSPIN. - YouTube
Joystick Controller - Panel Layout
Arcade Buttons - How Many? Layout? - RetroPie Forum
ArcadeCab- MAME Cabinet Plans 2: Wiring the Control Panel | Arcade, Maquina arcade
Amazon.com: EG STARTS 4 Player LED Arcade DIY Kit USB MAME PC Game DIY & Raspberry Pi Retro Controller DIY Including 4x Arcade Joystick, 40x LED Chrome Arcade Buttons 4x Zero Delay
Amazon.com: EG STARTS Arcade Gamepads & Standard Controllers DIY Games MAME Kit 2 Ellipse Oval Joystick + 20 LED Chrome Buttons (Blue-Green-Colors) : Video Games
Configure Controls On Mame (Official) - YouTube
Controller profiles for X-Arcade series of controllers by Xgaming? - Printable Version
Doc's Modular Control Panels - MAME modular panel system
Controller info overlay in the game - RetroPie Forum