Reading is Fundamental
I don't yet have a pair of wire clippers, so I used long jumper cables from another purchase. It didn't work; I was using one of my Arduino Unos. Is that why? Do I need to write some more code or is the way this is wired to blame? Or is that the Leonardo has some functionality that the Uno doesn't have? Vice versa? I just thought that the Leonardo had a lower processing power, so I guess a week ARM (is that it) chip.
I have had this issue before: the serial port/USB drivers are not showing up when I have written a script to get digital input/output to/from Arduino. I installed FTD2 drivers but those are not displaying the way as specified in the project's documentation.