NRF52840 Pro Micro Dev Board V2

The NRF52840 Nano Dev Board V2, featuring the Nordic NRF52840 SoC, supports Bluetooth 5, Zigbee, and Thread. Ideal for IoT with extensive connectivity and low power use, it’s compact and versatile. Compatible with Arduino and MicroPython for easy programming and robust performance in embedded applications. The NRF5280 development board has a 3.7V lithium battery interface and a software switch that can cut off the power of the LED. When turned off, the standby power consumption can reach 1mA. 

Quick Spec

• Soc: Nordic NRF52840 ARM Cortex-M4F processor
• Support: Bluetooth 5, Zigbee, and Thread
• Flash memory: 1 MB Flash memory
• Memory: 256 KB RAM
• Bootloader: Drag and drop flashing using the UF2 bootloader
• Interface: USB Type-C
• GPIO: 21 GPIO pins
• Power Consumption (Std Mode): 5.3 mA
• Power Consumption (Standby Mode): 1mA

Pin configuration

Firmware

The built in UF2 bootloader makes flashing very easy – no programmer necessary. Just reset the board twice in quick succession (e.g. by double-tapping the reset button on the keyboard) to enter the bootloader mode which will present the board as a USB Mass Storage device (think “USB flash disk”) – just drag and drop the firmware .uf2 file to the disk and it will be flashed automatically.

See the ZMK Getting Started guide to find out more about customizing the firmware for your board.

Battery Input

The NRF5280 development board has a 3.7V lithium battery interface and a software switch that can cut off the power of the LED. When turned off, the standby power consumption is around 1mA.

Resources

• NRF52840 Pro Micro Dev Board Information 
• NRF52840 Pro Micro Article on Tindie
• Arduino Core for nRF52 Boards - Adafruit's Arduino core with support for nRF52 boards
• Android - nRF Connect for Mobile
• Apple IOS - nRF Connect for Mobile
• Windows - nRF Connect for Desktop

Shipping List

• 1 x NRF52840 Pro Micro Dev Board V2
• 2 x 12 Pin Male Header Pin
• 1 x 3 Pin Male Header Pin

Please note that the NRF52840 Nano Dev Board V2 requires soldering for its pins, as they are not pre-soldered.