osoyoo pro micro atmega32u4 5v/16mhz module board with 2 row pin header replace with atmega328 pro mini for arduino osoyoo <b>on-line instructions: http://osoyoo.com/2018/06/25/osoyoo-pro-micro-board <br>note:when you open the ide software, pls go to the tool and choose the board "leonardo"<br><br>we have tech support for after-sale. if it can't be recognized by your computer when you use it, please change another usb cable or computers to test, if still no any update, may you need to install a driver , we made a detail tutorial, you can visit: https://youtu.be/9k5mk-fhf24 if still not solved it, please tell us.we can definitely help you to fix the problem .<br> <br> 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 <br> 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 pro-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. <br> 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. <br> <br> feature: <br> atmega32u4 running at 5v/16mhz <br> supported under ide v1.0.1 <br> recommand power supply for board: 6-7v, less than 9v <br>on-board micro-usb connector for programming <br> 4 x 10-bit adc pins <br> 12 x digital i/os (5 are pwm capable) <br> rx and tx hardware serial connections <br> our smallest pro-compatible board yet <br> <br> package includes: <br> 1 x osoyoo pro micro atmega32u4 module