keeyees pro micro atmega32u4 5v 16mhz micro usb development board module microcontroller (pack of 3pcs) keeyees <strong>features: </strong><br /> atmega32u4 running at 5v/16mhz<br />recommend power supply for board: 6-7v, less than 9v<br /> on-board micro-usb connector for programming<br /> 4 x 10-bit adc pins, 12 x digital i/os<br /> rx and tx hardware serial connections<br /> <br /> <br /> <strong>how to use?</strong><br /> 1. connected to computer. (if this module cannot be recognized by your computer, please refer to this link to install the driver)<br /> 2. opened ard ide and loaded blink sketch.<br /> 3. set board to leonardo and selected the appropriate com port (it showed up in the list already identified as a leonardo).<br /> 4. connected an led to pin 9 and modified the sketch accordingly.<br /> 5. hit upload and within a few seconds having a blinking led. <br /> <br /> <strong>package includes:</strong> <br /> 3 x pro micro atmega32u4 5v 16mhz module<br /><br /> <b>keeyees:</b> best choice in various electronic modules & components, diy parts and tools to <br>support your work and design challenges from home, school to industrial applications!