Pro Micro (Micro-USB) - 5V/16MHz - Arduino-compatible ATmega32U4

Spice up your DIY keyboard builds with this little microcontroller, which works with the TMK and QMK firmware. It's got 18 pins for you to work with.

Pro Micro - USB-C - 5V/16MHz - ATmega32U4 - SparkFun DEV-15795

Pro Micro Module with ATmega32U4, 5V, 16MHz, Arduino compatible

DEV-12640 - SparkFun, Pro Micro 5V 16MHz

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Pro Micro (Micro-USB) - 5V/16MHz - Arduino-compatible ATmega32U4