How to integrate Commodore 64 with Arduino

In this video we connect our C64 to an Arduino and we communicate between them over an "RS-232" serial connection.

First we communicate from our PC to the Arduino and to the C64 and back, kind of like a chat program.

We finish up by using this technique to have our C64 control a strip of individually addressable "neopixel" RGB LEDs.

Previous videos in the C64 Electronics series:

[BowmakerFox]

Great tutorial, thank you!
Would it be possible to use the arduino's RX and TX pins instead?
I intend to run third party firmware on my arduino that can only use the RX and TX pins, if at all possible