: Place the .lbr file into your EAGLE libraries folder (usually found in Documents > EAGLE > libraries ).
The Pro Micro's micro-USB port protrudes past the edge of the PCB. If you design a closed enclosure or a shield that wraps around the edge, the USB cable won't plug in. arduino+pro+micro+eagle+library
She ordered new boards. This time, she paid for overnight shipping. : Place the
Note: Do not paste it into the Program Files directory (where Eagle installs its core libraries). That folder gets overwritten during updates. frustrating for mass production)
Eagle CAD Library ( .lbr ) for the Arduino Pro Micro (based on ATmega32U4) Source: Typically SparkFun’s GitHub repository or Arduino’s official Eagle files Rating: 4/5 Stars (Excellent for prototyping, frustrating for mass production)