Description
The NRF52840 Pro Micro Development Board is a compact, low-power wireless module designed as a drop-in replacement for Pro Micro boards. It is fully compatible with Nice! Nano V2.0, making it an excellent choice for wireless mechanical keyboards, IoT devices, and other embedded projects. Powered by the Nordic nRF52840 SoC, it combines high processing performance, multiple wireless protocols, and strong security features, all while keeping power consumption ultra-low.
Key Features
- Based on Nordic nRF52840 SoC with ARM Cortex-M4F @ 64MHz
- 1MB Flash & 256KB RAM for advanced applications
- Supports Bluetooth 5, Thread, Zigbee, ANT, and 2.4GHz wireless protocols
- Onboard antenna for stable wireless connectivity
- 3.7V Lithium battery interface with LTH7R charging IC
- Ultra-low power consumption: 20µA in standby, ~1mA with LED off
- Built-in security: AES encryption, SHA-256 hashing, and TRNG
- Fully Pro Micro pin-compatible, easy integration into keyboards and microcontroller projects
- Preloaded with Blink-All-IO test program
- Double-tap reset to enter Nice! Nano V2 Bootloader
Specification
- Processor: ARM Cortex-M4F, 64MHz
- Memory: 1MB Flash, 256KB RAM
- Wireless Protocols: Bluetooth 5, Thread, Zigbee, ANT, 2.4GHz
- Interfaces: ADC, PWM, SPI, I2C, UART, USB, GPIO
- Power Supply: 3.7V lithium battery input, onboard charger
- Security: AES, SHA-256, TRNG
- Standby Current: ~20µA (LED off mode ~1mA)
- Bootloader: Nice! Nano V2 (enter by double-tap reset RST-GND)
- Package Includes: 1 × NRF52840 Pro Micro Development Board
Application
- Wireless mechanical keyboards (compatible with Nice! Nano ecosystem)
- Bluetooth HID devices (mouse, controllers, remotes)
- IoT devices requiring low power & secure wireless communication
- Smart home projects with Bluetooth Mesh, Thread, or Zigbee
- Embedded systems with multi-protocol wireless support
- Educational projects for learning wireless communication and security