NRF52840 SuperMini Development Board

NRF52840 Development Board – Supermini (Compatible with Nice Nano)

The NRF52840 Supermini Development Board is a compact, high-performance wireless microcontroller module designed for advanced embedded projects, BLE-enabled devices, and custom mechanical keyboards. Fully compatible with the popular Nice!Nano layout and pinout, this board offers powerful capabilities in an ultra-small footprint, making it ideal for space-limited builds without compromising features or performance.

Key Features

• Powerful Nordic NRF52840 MCU
  Equipped with a 64-MHz ARM® Cortex-M4F processor, the board delivers more than enough processing power for real-time applications, wireless communication, HID devices, sensor networks, and wearable electronics.

• Bluetooth 5.0 LE + Long-Range Support
  Integrated 2.4 GHz radio with support for Bluetooth 5.0, BLE, Thread, Zigbee, ANT, and proprietary RF protocols. Ideal for wireless peripherals like keyboards, game controllers, IoT sensors, and custom remote devices.

• Nice Nano Compatible Pinout
  Designed to serve as a drop-in replacement for Nice!Nano-based builds. Fits most keyboard PCBs and cases that support the Nice Nano layout, ensuring easy integration and hardware compatibility.

• USB-C Interface
  Modern and reliable USB Type-C connector for programming, debugging, and power input. No adapters required.

• Large 1MB Flash & 256KB RAM
  Provides ample memory for advanced firmware, custom bootloaders, and complex applications.

• Low-Power Operation
  The NRF52840’s efficient architecture makes the board ideal for long-running battery-powered projects. Supports Li-Po battery charging (where supported by design) for portable or wireless devices.

Typical Applications

• Custom mechanical keyboards (QMK / ZMK)

• Wearable electronics

• Bluetooth HID devices (mice, controllers, gamepads)

• IoT sensors and nodes

• RF and wireless testing development

• Home automation

• Robotics and DIY electronics projects

Technical Specifications

• MCU: Nordic NRF52840

• Core: ARM Cortex-M4F @ 64 MHz

• Wireless Support:

  • Bluetooth 5.0 LE

  • BLE long-range

  • Thread & Zigbee

  • ANT

  • Proprietary 2.4 GHz modes

• Memory:

  • 1MB Flash

  • 256KB RAM

• Connectivity: USB Type-C

• Operating Voltage: 3.3V

• Programmable via:

  • UF2 bootloader

  • SWD (with external programmer)

  • Over-the-air (OTA) supported in compatible firmware

• Dimensions: Supermini compact form-factor compatible with Nice Nano footprint

Software Compatibility

The board is supported by a wide range of development environments, including:

• ZMK Firmware (ideal for wireless keyboards)

• QMK (supported builds)

• Arduino IDE

• PlatformIO

• Nordic SDK / Zephyr RTOS

Why Choose This Board

Whether you are building a wireless split keyboard, experimenting with IoT devices, or creating a compact embedded project, the NRF52840 Supermini offers an excellent balance of features, modern connectivity, and open-source ecosystem support—all in a footprint small enough to fit where other boards won’t.