This board is a microcontroller board based on the Atmega32U4 (Arduino® compatible Leonardo). It has 20 digital input/output pins (7 of which can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a micro USB connector, a power jack, an ICSP header, and a reset button. It includes everything needed to support the microcontroller, connect it to a computer with a USB cable or power it with an AC-to-DC adapter or battery to get started... 100% compatible with Arduino® Leonardo. Basic product information: •• User manual Language: English •• Primary colors: White •• Depth Unit: 3.8 Cm •• Height Unit: 15.5 Cm •• Width Unit: 7.8 Cm •• Weight Unit: 40 G • Technical data: • • Specification kits and modules: Microcontroller: Atmega32U4 Operating voltage: 5 VDC Input voltage (recommended): 7-12 Vdc Input voltage (limits): 6-20 Vdc Digital I/O pins: 20 Analog input pins: 12 PWM channels: 7 DC current per I/O pin: 40 Ma DC current for 3.3 V pins: 50 Ma Flash memory: 32 Kb (Atmega32U4) of which 4 Kb is used by the bootloader Sram: 2.5 Kb (Atmega32U4) Eeprom: 1 Kb (Atmega32U4) Clock speed: 16 Mhz • Operational characteristics: •• Coding level: 2 •• Electronics level: 2 •• Mechanics skill level: 1 •• Soldering level: None.