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Feature

The keyestudio 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), 12 analog inputs, a 16 MHz crystal oscillator, a micro USB connection, a power jack, an ICSP header, and a reset button.
The Leonardo differs from other Arduino boards using separate USB-Serial chip 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.
Has fcc and ce certification that they are made from environmentally friendly production technology and materials, made function,voltage, current testing before packaging

Description

Specification
Controller: ATmega32u4
Working frequency: 16 MHz
Working voltage: 5V
Input voltage (recommended): 7-12v
Digital I/O port: 23
PWM channel: 7
Analog input: 12
Maximum allowable current of 5V digital/analog port: 40 mA
Maximum allowable current of 3.3V digital/analog port: 50 mA
Flash Memory: 32 KB (ATmega32u4) of which 4 KB used by boot loader
SRAM: 2.5 KB (ATmega32u4)
EEPROM: 1 KB (ATmega32u4)

Other related instructions
Digital IO port: 23 (D0 - D13, D14-MISO, D15-SCK, D16-MOSI, D18-23 [A0-A5])
Analog input: 12 (A0 - A5, D4 - A6, D6 - A7, D8 - A8, D9 - A9, D10 - A10, D12-A11)
Serial communication: D0 (RX) and D1 (TX)
IIC communication: D2 (SDA) and D3 (SCL)
External interrupt: D3 (interrupt 0), D2 (interrupt 1), D0 (interrupt 2), D1 (interrupt 3) and D7 (interrupt 4)
PWM port: D3, D5, D6, D9, D10, D11 and D13
SPI: ICSP pins.Support SPI communication by using the SPI library. It is important to note that SPI pins do not connect to any number I/O pins like UNO, they can only work on the ICSP port.This
means that if your expansion board has no ICSP pin connected to the 6 feet, it will not work.
LED: 13. There is a built-in LED on the digital pin 13. When the pins are high level, LED is bright;when the pins are low level,the LED is not bright.

List:
1 x keyestudio Leonardo R3 Development Board
1 x Usb Cable