COMMODORE 64 USB KEYBOARD FOR BMC64 (Poor man's "Keyrah" ) - Share Project - PCBWay
Commodore 64 Keyboard Gets The USB Treatment Thanks to Arduino
C64 Keyboard Helps Keep The Memory Alive | Hackaday
NEW] Commodore 64 USB keychain - Retro 8bit Shop
GitHub - DJSures/Commodore-64-USB-Keyboard: An Arduino Micro firmware for making a C64 keyboard into a USB HID device. This uses the REAL keyboard key mapping of the C64, not the PC mapping.