I've searched a lot but found nothing.
I am fairly new to 3D printing but I know how to print waterproof cases (choosing the right filament and settings).
What I am wondering is how about I/O (Input/Output) e.g. displays, LEDs, buttons, and connectors (ports).
How can I use these parts and how to seal them, etc.?
What other ways do users usually choose for I/O?