[Hans Peter] wanted to move away from using full Arduino ... edge connector for the USB instead of using a mini-B jack. It’s pretty impressive to see his prototyping work with the 16-pin QFN ...

Rather than be left on the wrong side of the divide [Stefan S] has come up with his own USB-C version of of an Arduino Pro Micro to avoid having to always find a different cable. Home made ...

It's like a shrunken version of the Arduino Leonardo as it features the same ATmega32U4 microcontroller, micro-USB ... connector on the Micro. Like the Nano, the Micro's size and male pin headers ...