[nanoflite] demonstrates the interface with an Arduino Uno and a Grove shield. The C64 is able to display the state of the LED, relay and servo outputs, as well as read the Arduino’s button and ...

A completely different take on a Commodore 64 comes from [UNI64] in the form ... with a tactile switch keyboard and LCD display at the top. It appears to bring the 64 ports out to headers, and ...