3pcs Pro Micro ATmega32U4 5V 16MHz Micro USB Development Board Module Microcontroller for Arduino

• ATmega32U4 running at 5V/16MHz
• Pay attention to : 1.When you open the IDE software, could you please go to the tool and choose the board
• This board connects directly to the FTDI Basic Breakout board and supports auto-reset.
• On-Board Micro-USB connector for programming

Features: ATmega32U4 running at 5V/16MHz Supported under IDE v1.0.1 4 x 10-bit ADC pins, 12 x Digital I/Os Rx and Tx Hardware Serial Connections On-Board Micro-USB connector for programming Pay attention to : 1.The acceptable voltage range is 6 to 9 V 2.When you open the IDE software, could you please go to the tool and choose the board Explanation: 1. The Pro Micro is similar to the Pro mini except with a ATmega32U4 on board. The USB transceiver inside the 32U4 allows us to add USB connectivity on board and do away with bulky external USB interface. 2. This tiny little board does all of the neat-o tricks that you're familiar with: 4 channels of 10-bit ADC, 5 PWM pins, 12 DIOs as well as hardware serial connections Rx and Tx. Running at 16MHz and 5V, this board will remind you a lot of your other favorite -compatible boards but this little guy can go just about anywhere. If you're supplying unregulated power to the board, be sure to connect to the "RAW" pin on not VCC.