Arduino Pro Micro

Arduino can make USB devices! What you simply needed for a USB HID (Human Interface Device) project is the Arduino Pro Micro (Leonardo) board. Today, I’ll be introducing that pretty great minuscule Arduino board available all over.

At first glimpse, it might look like the quite popular Arduino Pro Mini but actually Pro Micro is an extremely different kind Arduino. The Arduino Pro Micro (Leonardo) has an Atmega32U4 processor with a built-in USB-serial interface. The 32U4 comes with a full-speed USB transceiver interface, allowing you to program it to emulate any USB device. In simple terms, with a Pro Micro you can make your own keyboard, mouse, or other HID-class USB device at ease.

Microcontroller: ATMega 32U4
Operating Voltage: 5V
Input Voltage (Limit): 12V
Digital I/O Pins: 12
PWM Pins: 5
Analog Pins: 4
Clock Speed: 16 MHz
Weight: 4.4g