6pcs Pro Micro for Atmega32U4 5V 16MHz Bootloadered IDE Micro USB Pro Micro Development Board Microcontroller Compatible for Pro Micro Serial Connection with arduino Pin Header (Micro USB)

I used these boards to make macro keyboards. The small for factor made it possible to fit into a small 3D printed exposure. It is the perfect alternative to an expensive stream deck. I highly recommend this board if you’re looking to save money on a macro keyboard

These have the defect with the schottky on the power rail that back feeds enough amperage to be seen as the primary (USB powered) micro when power is sent over a TRRS cable. I'm working on a Lily58 (Corner based) and Sofle RGB build. There are micros on Amazon (I got a 3 pack of the purple boards) that do work as Secondaries. So, you can use these on the Primary (USB) usually right side. But, not on the Secondary left side. I spent hours down a very deep rabbit hole to find this out. Hopefully this helps the next person. They flash well and I've used them for other non-keboard based projects, like an IR Bablefish and temperature automations. (-0.5 stars, rounded up, for not having the schottky diode fixed.)

I used it as a rubber ducky, and it worked great!

I really dig these boards and have used them a lot recently. Today as i was plugging usb in for first time the usb port snapped right off, using very little force as the board was mounted already. While inspecting the others that I have it is very apparent the pins are not fully soldered onto the board, and the ground pads/mounting is also poorly mated. There seems to be a quality control issue. A very simple fix in manufacturing would make this a 5+ star product

I hoped that the other reviewers mentioning the USB port easily coming off were just the few but I too encountered the issue. After one failed and went and added extra solder to the other two and that solved the issue.For the price it is worth putting the little extra solder on the connectors in my opinion.

Out of the box only one worked. And after I went to reload code on that one, it would not be recognized by arduino or QMK toolbox, but the original code is still running on that one. Don't buy from here.

These work well. However as a keyboard builder they are not as good as an Elite-C. I had to press the reset button twice sequentially to get firmware to flash onto the bootloader, Elite-C controllers are much easier to flash. That's the only reason I give them 4 stars. Because there is a better product if you are willing to spend more.It will work for what you need it for though.

As a few others have noted, the USB ports can be very fragile. Indeed, I managed to break one after only a few days of use (in a keyboard). Thankfully you get 3, so I just flashed a spare and replaced the broken one.

USBがType-Cなのと、まとめ買いで1個当たり安く購入できたので良かった。Arduino Leonald, Arduino Micro Pro等のボード設定で書き込みできました。使用するライブラリによっては、警告表示出たりします。私は、VRC PRO用のUSBアダプタとして使用しました。問題なく動作しています！

USB通信の必要性があり購入。全て問題なく動作しました。また通信も簡単に出来ました

Pro Microと表記されていますがNANOが届きます。別物です。迷う事なく返品しました。

商品説明にはPro Microとありましたが何故かNanoが届きました。パッケージの袋にはpro microと記載があったので入れ間違え？

当然返品で再購入なし。AliExpressで購入する。