NRF52840 Dev Board – Bluetooth 5.0, Nice!Nano V2.0 Compatible

NRF52840 Development Board – Bluetooth 5.0 Wireless MCU Module

Take your wireless keyboard and embedded projects to the next level with this powerful NRF52840 Development Board, fully compatible with Nice!Nano V2.0 and the Pro Micro footprint. Built around the Nordic nRF52840 chip, this compact dev board packs serious processing power and rock-solid Bluetooth 5.0 connectivity into a form factor that fits standard mechanical keyboard PCBs.

Key Features

• Bluetooth 5.0: Onboard antenna for reliable, low-latency wireless communication — ideal for wireless keyboard builds and IoT projects.
• ARM Cortex-M4F CPU: Clocked at 64 MHz with 1 MB of flash memory and 256 KB RAM for responsive, high-performance operation.
• Integrated Battery Charging: Onboard lithium battery charge management IC supports seamless charging and discharging of LiPo/Li-Ion batteries.
• Ultra-Low Standby Power: Achieves approximately 20 µA standby current consumption, extending battery life in portable and wireless builds.
• Nice!Nano V2.0 Compatible: Drop-in replacement footprint — works directly with ZMK firmware and popular open-source keyboard PCBs.
• Pro Micro Footprint: Familiar pin layout makes it easy to integrate into existing projects designed for Pro Micro controllers.
• Bootloader Access: Enter the Nice!Nano V2 bootloader by double-tapping RST to GND within 0.5 seconds (or double-pressing the RST button on keyboard builds).
• Default Firmware: Ships pre-flashed with Blink-All-IO program (all IO ports auto-flip every 1 second) for easy out-of-box testing.

Specifications

Who Is This For?

Whether you're building a custom wireless mechanical keyboard, prototyping a BLE IoT device, or exploring embedded ARM development, the NRF52840 dev board gives you the wireless capability, processing power, and battery management features you need — all in a compact, familiar form factor.

Learn more: ENERGY STAR product efficiency guidance

Frequently Asked Questions

Q: Is this NRF52840 development board compatible with ZMK firmware for wireless keyboards?

A: Yes! This board is designed to be fully compatible with Nice!Nano V2.0, which is one of the most popular controllers for ZMK-based wireless mechanical keyboard builds. Simply flash ZMK firmware as you would with an official Nice!Nano V2.0.

Q: How do I enter the bootloader on this NRF52840 board?

A: To enter the Nice!Nano V2 bootloader, short RST to GND twice within 0.5 seconds. On a keyboard PCB with a physical RST button, simply press it twice quickly within 0.5 seconds. The board will then appear as a mass storage device for flashing firmware.

Q: Does this board support lithium battery charging?

A: Yes. The onboard battery charging management chip supports lithium battery (LiPo/Li-Ion) charging and discharging, making it ideal for building portable or wireless battery-powered devices without needing an external charging circuit.

Q: What is the standby power consumption of this NRF52840 dev board?

A: In standby mode, the board achieves approximately 20 µA power consumption, which is excellent for battery-powered wireless projects where long battery life is important.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.