Mini USB ATmega32U4 Pro Micro 5V 16MHz Board

Description

• The Pro Micro is similar to the Pro Mini except with an 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.
• This tiny little board does all work for Arduino 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 for Arduino-compatible boards but this little guy can go just about anywhere.
• There is a voltage regulator on board so it can accept voltage up to 6V (Blue board)
• If you’re supplying unregulated power to the board, be sure to connect to the “RAW” pin on not VCC.
• This latest revision corrects the silk error from the last version of the board so that pin 14 is correctly labeled.
• We’ve also added a PTC fuse and diode protection to the power circuit and corrected the RX and TX LED circuit.