Key Features

✅ NRF52840 MCU – ARM Cortex-M4F @ 64MHz (with FPU, 1MB Flash, 256KB RAM). ✅ Bluetooth 5.0/5.1 (BLE) – Long-range, high-throughput, and mesh support. ✅ Native USB (Type-C/Micro-USB) – Acts as HID (Keyboard/Mouse) or CDC serial. ✅ ProMicro-Compatible Pinout – Fits most existing ProMicro shields & footprints. ✅ Battery-Powered Ready – Low-power modes & LiPo charging (on some models). ✅ Arduino & CircuitPython Support – Easy programming with familiar tools. ✅ Onboard Antenna & RGB LED – For wireless stability & visual feedback.

Technical Specifications

• MCU: Nordic NRF52840 (64MHz Cortex-M4, 1MB Flash, 256KB RAM).

• Wireless: Bluetooth 5.0/5.1 (BLE), 2.4GHz proprietary RF.

• USB: Native USB Type-C or Micro-USB (depends on model).

• GPIOs: 20+ pins (UART, SPI, I2C, PWM, ADC, NFC).

• Analog Inputs: 8x 12-bit ADC channels.

• Power Supply: 3.3V logic, LiPo battery support (with charging on some boards).

• Dimensions: Similar to ProMicro (33mm x 18mm).

Why Choose This Over a ProMicro?

✔ 32-bit Power – Far superior to 8-bit ATmega32U4 (ProMicro). ✔ Bluetooth 5.0 – Enables wireless projects (BLE peripherals, mesh, etc.). ✔ Native USB – No need for USB-to-serial chips (works as HID/CDC natively). ✔ More Memory – 1MB Flash vs. 32KB on ProMicro. ✔ Modern Dev Tools – Supports Arduino, CircuitPython, Zephyr, & PlatformIO.

Applications

🔹 Wireless Keyboards/Mice (HID over BLE) 🔹 IoT Sensors & Wearables 🔹 BLE Mesh & Smart Home Devices 🔹 USB Gadgets (MIDI, Gamepads, etc.) 🔹 Upgrading ProMicro Projects

Development Support

• Arduino Core (Adafruit/Community NRF52)

• CircuitPython & MicroPython

• Zephyr RTOS for Advanced Users

• Segger J-Link Debugging Support

Package Includes

• 1x NRF52840 Development Board (Type-C/Micro-USB).