| Parameter | Value | |-----------|-------| | Microcontroller | ATmega32U4 | | Operating Voltage | 5V (or 3.3V variant) | | Clock Speed | 16 MHz (5V) / 8 MHz (3.3V) | | Board Dimensions | 33mm x 18mm (approx) | | Mounting Hole Diameter | 2.5mm (two holes) | | Pin Count | 18 + 4 mounting holes (usually 12 on each edge) |
board (and its equivalents like the SparkFun Pro Micro), based on current community resources and official documentation as of April 2026. 1. Official and Primary Sources Arduino Pro Micro is primarily a product developed by SparkFun Electronics
If the Eagle library feels limited, consider: arduino pro micro eagle library
Finding an Arduino Pro Micro library for Autodesk EAGLE usually means you want to drop the board onto a larger PCB design as a "module" or "shield". Because the Pro Micro is a SparkFun-designed board, the most official and reliable way to get it is through their libraries. 1. Download Existing Libraries
: This is the "gold standard." It contains many Arduino footprints, including the Pro Micro. You can find it on SparkFun's GitHub Adafruit EAGLE Library : Another highly trusted source for hobbyist components. Community Libraries Arduino Pro Micro – EAGLE Library Creation Report 1
Schematic Symbol
The Arduino Pro Micro is a favorite among makers for its compact size and native USB support, but integrating it into a custom Printed Circuit Board (PCB) requires a precise EAGLE library file (.lbr). Using a dedicated library ensures that the physical dimensions and electrical connections on your PCB align perfectly with the real-world module. Understanding EAGLE Libraries Official and Primary Sources Arduino Pro Micro is
Integrated Footprint & Schematic: Instead of drawing 24 individual pins, the library provides a unified symbol and footprint specifically sized for the Pro Micro's 0.1" pitch headers.
An EAGLE library consists of three main components: