(along with the other docs)
and I am trying to understand the pin numbers and the actual ports. For example, port D3 has pin 3 and 4? And then port D4 has pin 4 and 5?
So if I write to pin 4, that means both port D3 and D4 will be “on”?
I’m really new and just trying to understand how all of this works and set up.