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
Suppose you're building a wearable electronics project using the Arduino Pro Micro. You can use the Eagle library to design a custom PCB that integrates the Pro Micro with other components, such as sensors, LEDs, and a battery.