Arduino Leonardo with Headers

Key Features: The classic Arduino board that can act as a mouse or keyboard. Features 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 power jack, an ICSP header, and a reset button Based on the ATmega32u4 USB or AC-to-DC powered The Arduino Leonardo 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, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery 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 processor. This allows the Leonardo to appear to a connected computer as a mouse and keyboard, in addition to a virtual (CDC) serial / COM port.Item SpecificsMicrocontroller: ATmega32u4Operating Voltage: 5 VFlash Memory: 32 KB (ATmega32U4) of which 4 KB used by bootloaderSRAM: 2.5 KB (ATmega32U4)Clock Speed: 16 MHzAnalog Channels: 12EEPROM: 1 KB (ATmega32U4)DC Current per I/O Pins: 40 mAInput Voltage: 7-12VDigital I/O Pins: 20PWM Channels: 7Clock Speed: 16 MHzPCB Size: 68.6 x 53.3 mmWeight: 20 g