Genuino Micro

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Genuino Micro is the smallest Genuino board to offer the full set of analog and digital pins. The Micro’s processor is as powerful as the Uno’s, but the small form factor allows embedding into tight spaces, invaluable for projects where weight and/or size are important factors. It’s ideal for projects that require a high number of connections with a small footprint. Plus, it fits directly into a breadboard for easy prototyping. The Micro is also capable of emulating a mouse or a keyboard when connected to a computer via USB.

Genuino Micro, developed in conjunction with Adafruit, is a board based on the ATmega32U4, an 8-bit AVR microcontroller from Atmel . It contains everything needed to support the microcontroller: simply connect it to a computer with a micro USB cable to get started. The Micro’s 0.1” pitch pins are designed for easy mounting on a breadboard.
The Micro’s 32U4 processor has built-in USB communication, allowing the Micro to appear to a connected computer as a mouse and keyboard in addition to a virtual (CDC) serial / COM port. To compare this board to the current, past or outdated boards see the Comparison Page.



Genuino Micro and Arduino Micro share the same components, characteristics and quality of manufacturing. They are actually the same board under a different brand. Depending on the area of the world where you live you’ll be able to purchase an Arduino Micro or a Genuino Micro. Learn more.

Genuino Micro is open-source hardware!
These are the relevant files: SchematicsReference DesignBoard size

If you want more information about programming the Genuino Micro or how to interface hardware with it, please go to the Product Page. Genuino MICRO is programmed, as all the other Genuino boards with theSoftware (IDE) that you can download for free. To find inspiration for what you can do with the Genuino Micro, please visit the Tutorials Page and take part in the community the lively discussions on the Forum.


Technical specifications

Microcontroller ATmega32u4
Operating Voltage 5V
Input Voltage (recommended) 7-12V
Input Voltage (limit) 6-20V
Digital I/O Pins 20
PWM Digital I/O Pins 7
Analog Input Pins 12
DC Current per I/O Pin 40 mA
DC Current for 3.3V Pin 50 mA
Flash Memory 32 KB
Flash Memory for Bootloader 4 KB
Clock Speed 16 MHz


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