Arduino Micro Development Board

Original and the best - Arduino Micro Development Board

The Arduino Micro is a microcontroller board based on the ATmega32u4. It has 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a micro USB connection, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a micro USB cable to get started.

The Micro is similar to the Arduino Leonardo in that the ATmega32u4 has built-in USB communication, eliminating the need for a secondary processor. This allows the Micro to appear to a connected computer as a mouse and keyboard, in addition to a virtual (CDC) serial / COM port. It also has other implications for the behavior of the board; these are detailed on the getting started page.

The Arduino Micro has been co-designed with Adafruit.

Technical specification

Microcontroller ATmega32u4

Operating Voltage 5V

5V Input Voltage (recommended) 7–12V

Input Voltage (limits) 6–20V

Digital I/O Pins  20

PWM Channels  7

Analog Input Channels  12

Dimensions: 48 x 18 mm

DC Current per I/O Pin  40 mA

DC Current for 3.3V Pin  50 mA

Flash Memory 32 KB (ATmega32u4) of which 4 KB used by bootloader

SRAM 2.5 KB (ATmega32u4)

EEPROM 1 KB (ATmega32u4)

Clock Speed 16 MHz