The Micro is a microcontroller board based on the ATmega32U4 (datasheet), developed in conjunction with Adafruit. 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. It has a form factor that enables it to be easily placed on a breadboard. The Micro board is similar to the Arduino Leonardo in that the ATmega32U4 has built-in USB communication, eliminating the need for a secondary processor. The Micro can be powered via the micro USB connection or with an external power supply. The power source is selected automatically. The Arduino Micro board is similar to the Arduino Leonardo, but much smaller -- one of Arduino's smallest board -- making it easy to integrate into everyday objects to make them interactive. By including a built-in USB communication, the Arduino Micro can appear as a mouse or keyboard to a connected computer, in addition to a virtual (CDC) serial or COM port. Tech specs Microcontroller ATmega32U4 Operating Voltage 5V Input Voltage (recommended) 7-12V Digital I/O Pins 20 PWM Channels 7 Analog Input Channels 12 DC Current per I/O Pin 20 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 LED_BUILTIN 13 Length 48 mm Width 18 mm Weight 13 g
