Description

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).

🚀 Perfect for makers who need a ProMicro-sized board with modern wireless & USB features! 🚀