Rotary Joystick to MAME Interface with Arduino - SNK LS30 on Retropie - YouTube
Joystick Info - Happ optical rotary with sealed encoder attached | Museum of the Game Forums
Hill Brothers Arcade on X: "@CheekyCrissy Use Suzo-Happ Part # 50-5618-00 8-way Rotary Joysticks and Ultimarc USB Rotary Joystick Interface. Works great for MAME. https://t.co/LLbTJmRb74" / X
Ikari 12-Way Rotary Upgrade Kit For Servostik Ball Top & JLW-TM-8 - Arcade World UK