Original Arduino Leonardo without Headers

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 chip has about the same amount of flash, RAM, and capability as the ATmega328 found in the UNO. 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.

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

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). On one hand this means that sketches on the Leo are a little bigger because it’s also handling USB interaction. On the other hand, it allows the Leonardo to appear to a connected computer as a mouse and/or 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.

This board is only supported in the latest Arduino IDE 1.0.1 so you will also need to update the IDE.

Features :

• ATmega32U4 Microcontroller
• Clock frequency: 16MHz
• Flash memory: 32KB
• SRAM: 2.5KB
• EEPROM: 1KB
• Input Voltage: 7-12V
• 20 Digital I/O Pins
• 7 PWM Channels
• 12 ADCs
• 16MHz Clock Speed
• 32 KB Flash Memory
• micro USB connection

Specifications:

• Model Type: Leonardo
• Microcontroller Chip: ATmega32u4
• Operating Voltage (VDC): 5
• Input Voltage(Recommended): 7V to 12V
• Input Voltage (limit): 6V-20V
• Analog I/O Pins: 12
• Digital I/O Pins: 20
• PWM Digital I/O Pins: 7
• Clock Speed: 16 MHz
• Flash Memory: 32 KB (ATmega32u4) of which 4 KB used by bootloader
• SRAM: 2.5 KB (ATmega32u4)
• EEPROM: 1 KB (ATmega328)
• Weight (gm): 20
• Length (mm): 68.6
• Width (mm): 53.3

Package Includes:

• 1 x Arduino Leonardo without Headers

Useful Links:

• Getting Started with Arduino
• Arduino Software (IDE)