Using a custom library for the Arduino Pro Micro in Eagle offers several advantages:
But with clear eyes.
: Through-hole headers are standard, but if you want a lower profile, you can use mid-mount headers or solder the board directly to the PCB using castellated holes if the library supports it. arduino+pro+micro+eagle+library
The Arduino Pro Micro Eagle library is like a duct-taped hammer. It looks ugly, the handle might wobble, but it gets the nail in the board every single time. Just wear safety glasses. Using a custom library for the Arduino Pro