Description:  BS PMicro is a ATmeag32U4-based microcontroller board. It has 16 universal digital input / output pins (6 of which can be used as PWM outputs and 7 can be used as analog inputs). On the board there are 16Mhz crystal and a USB-Micro interface. In addition there is a 3.3V independent power supply output, and its power output will not affect the MCU's work, the output power depends on the USB port power supply capacity, but the maximum is not higher than 1.5A. The board has burned 's bootloader, so it's compatible with 's IDE.  Although it is small, but it has a rich interface, not only to the traditional controller function, as well as in the computer to achieve the mouse, keyboard function, serial port function, and can directly communicate with the computer.  It have a big difference to most other MCU control board is that programming does not require additional programmer, you can directly use USB programming. This is not only convenient, stable, reliable, but also save a programmer money.    Features:  Master: ATmega32u4;  Operating voltage: 5V;  Number of digital IO: 16;  Number of PWM outputs: 6;  Number of analog inputs: 7;  Other peripherals: USB, UART, I2C, SPI, 3.3V Power Supply Output;  IO driving force: 40mA;  Flash: 32KB (ATmega32u4) where 4KB is occupied by bootloader;  SRAM: 2.5 KB (ATmega32u4);  EEPROM: 1 KB (ATmega32u4);  Frequency: 16Mhz;  Size: 23.50 * 20.34mm;    Package included:  1 x ATMega32U4 BS PMicro Pro Micro Leonardo