Arduino Pro Micro Eagle Library May 2026

Introduction

| Pin | Signal | Arduino Pin | ATmega32U4 | Notes | |-----|--------|-------------|------------|-------| | 14 | D15 | 15 | PB1 | Also SCK | | 15 | D14 | 14 | PB3 | Also MISO | | 16 | D16 | 16 | PB2 | Also MOSI | | 17 | D10 | 10 | PB6 | Also SS | | 18 | D9 | 9 | PB5 | PWM | | 19 | D8 | 8 | PB4 | - | | 20 | D7 | 7 | PE6 | - | | 21 | D6 | 6 | PD7 | PWM | | 22 | D5 | 5 | PC6 | PWM | | 23 | D4 | 4 | PD4 | - | | 24 | LED | 13 | PC7 | On-board LED (TX) | | 25 | D12 | 12 | PD6 | - | | 26 | GND | - | - | Ground | | 27 | RST | RESET | - | Second reset (optional) |

Enable in Eagle

: Open Eagle CAD, go to the Control Panel , right-click the library you just added, and select "Use" . arduino pro micro eagle library

Pad Coordinates (Origin at center of board)

Example Files to Include in the Library Package

Streamlining Your PCB Design: The Ultimate Arduino Pro Micro Eagle Library Guide If you've ever tried to drop an Arduino Pro Micro Go to product viewer dialog for this item. Introduction | Pin | Signal | Arduino Pin

1. Download the library (e.g., adafruit.lbr or sparkfun.lbr).
2. In Eagle, go to Library > Open Library Manager > Use and navigate to the file.
3. In your schematic, click Add and search for Pro Micro.
4. Place the component and wire up connections (e.g., assign pins to sensors, LEDs, or power rails).
5. Switch to the Board view – the Pro Micro footprint will drop in ready for routing.

5. Recommended: Use a Pre-Built Library

, the search came up empty. He didn't just need a rectangle; he needed the exact footprint—the precise spacing for those 24 pins that would allow the board to sit flush against his custom PCB. Download the library (e