Arduino
Leonardo

The latest addition to the Arduino family is here!

The Arduino Leonardo is a microcontroller board based on the exciting USB-enabled ATmega32u4 ( datasheet ).

This version of the Leonardo does not come with any headers attached for an ultra-thin, light-weight Arduino!

Please note that this board is very new and so is best used by people with existing Arduino experience.

This board is only supported in the latest Arduino IDE 1.0.

Please note that this board is different than the UNO and so is best used by people with existing Arduino experience.

This board is only supported in the latest Arduino IDE 1.0.

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, a spot for a 2.1mm power jack, an ICSP header breakout, and a reset button.

It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable to get started.

The Leonardo differs from all preceding boards in that the ATmega32u4 has built-in USB communication, eliminating the need for a secondary chip (such as an FTDI friend, FTDI cable or the USB/Serial converter on the UNO).