Product: Ardest Pro Micro for Arduino Leonardo Chromebook Deployments ATmega32U4 5V/16MHz Module Board with 2 Row pin Header Replace ATmega328 Arduino Pro Mini(Pack of 5)
Brand: Ardest
If you're new to Arduino's, an Arduino UNO is your best bet to learn on. But if you're even somewhat familiar with Arduinos and want to use an Arduino board for a dedicated project then this'll do nicely.
 As for typical Arduino things, this pro micro board is great to use for building your own USB gamming control panel because Windows, and probably Apple, will recognize it as an HID device like a keyboard, mouse, or game controller, unlike most Arduinos.
 Note:
 1.When you open the Arduino IDE software, pls go to the Tool and choose the board "Arduino Leonardo"as board type. 
 Features:
 1.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 
 2.This tiny little board does all of the neat-o 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 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 9V DC. If you're supplying unregulated power to the board, be sure to connect to the "RAW" pin on not VCC.
 3.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.
 Specification:
 .ATmega32U4 running at 5V/16MHz 
 .On-Board micro-USB connector for programming 
 .Work with newest software from Arduino.cc
 .4 x 10-bit ADC pins 
 .12 x Digital I/Os (5 are PWM capable) 
 .Rx and Hardware Serial Connections
 Package includes:
 5 x Arduino Pro Micro ATmega32U4 Board
 Had driver issues please contact via e-mail

Great little Arduino compatible board.Arduino Leonardo based, well built, up and running with a test sketch in minutes.One bonus to the 32U or Leonardo it can be a usb device, mouse, gamepad etc
Great Pro Micro with ATmega32U4 processor in a smaller format. Comes with the Leonardo bootloader preloaded from what I can tell (meaning after reset it has the 8-second pause during which you can program it)
Leonardo style micro boards.Identical to SparkFun version in pin layout and functionality
Our pro micro module is compatible with basic arduino programming systems.Great basis for the hobbyist electronics developer. Facilitates the economical creation of microprocessor-controlled devices, limited only by one's imagination

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