Main Function: Based on ATmega32U4 microcontroller, bulit-in USB interface transceiver, Pro Micro Board is suitable for projects requiring USB interface and programmable functions. Use it now to experience the ease of programming and rapid development capacity with the Pro Micro, unleash your creativity | Versatile Connections: Pro Micro has 4 x 10-bit ADC pins, 12 x digital I/Os (5 are PWM capable) and RX and TX serial hardware connections, rich hardware connection options, have all the ports you need | Easy to Programming: Pro Micro development board runs at 5V/16MHz, supported under IDE V1.0.1. Seamlessly integrate the Pro Micro into your projects by selecting the "Arduino Leonardo" in the tools menu of the Arduino IDE software | Widely Application: You can add some components to make a programmable keyboard; use Timer 4 on the ATmega32U4 processor to implement a variable frequency generator; use it as a frequency counter to read the frequency; combine it with the EC11 encoder to design a media controller and so on | Good Compatibility: Pro Micro is seamless integrated with the Arduino IDE and the extensive development tools and libraries make it a good choice for beginners. Pro Micro opens up a world of possibilities for your creative projects