Arduino Leonardo

Leonardo is the first Arduino development board to use a microcontroller with integrated USB. The ATmega 32U4 microcontroller USB manager for connection allows access to code libraries that allow the card to mimic keyboard, mouse and other devices that use the USB-HID protocol.

It also allows, thanks to the direct USB connection and independent physical serial, the use of the TX and RX PINs of the shields independently of the arduino ↔ PC communication, allowing them to be used in devices that must communicate at the same time via serial and with the PC as in the case of home automation and automation BUS.

It has 20 digital input output pins (7 of which are PWM-out and 12 usable as analog inputs), a 16 MHz oscillating crystal, a USB Micro B socket, a network socket, an ICSP header and a reset button. It contains everything you need to support the microcontroller: to get started, you just have to use the USB cable to connect it to a computer or power it via 12VDC power supply or battery.

SPECIFICATIONS

Power supply via micro USB

20 pin I / O with 7 PWM

Clock frequency 16 Mhz

Digital I / O: 20 (7 channels can be used as PWM)

Analog I / O: 12

SRAM: 2.5 KB

EEPROM: 1 KB

Clock speed: 16 MHz

Model ATmega32u4

Operating voltage 7 - 12 V

Flash memory 32 kB