Joystick adapter box

This is a casing for a custom-made PCB converting the 5V circuits of two 80s-style digital joysticks to the 3.3V GPIO circuit of a Raspberry Pi. Obviously, it houses as well the two DB9 connectors needed to plug in the joysticks.The photo has a slightly older version of this model with some minor design issues that are corrected meanwhile. I removed to Atari and Commodore logos you can see on the photo from the model to avoid potential trademark issues. The source code does contain the reference