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Host port USB Type
Microcontroller nRF52840
Voltage 3.3V
Digital I/O pins 23
I/O Voltage 3.3V
RAM 256 KB
Program memory 1 MB
Boot loader Adafruit Bootloader

The nice!nano is a microcontroller board with Bluetooth and USB, pin-compatible with a 3.3V Pro Micro. It uses the nRF52840 microcontroller from Nordic Semiconductor.


  • Mid-mounted USB Type C port, making it slimmer than a Pro Micro.
  • On-board Lithium battery charger (100 mA max).
  • Charging LED
  • Voltage out can be switched off in software.
  • Real-time clock
  • Three additional GPIO pins compared to the Pro Micro, plus two GPIO pads.


Support for the nRF52840 chip are in:

  • ZMK
  • BlueMicro firmware

Nordic Semiconductor's license for the "SoftDevice" for Bluetooth Low Energy is not compatible with the GNU Public licence, making it license-incompatible with QMK.