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keyboard/zmk-config/config/boards/arm/nrf52840_mdk_dongle
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README.md

nRF52840 MDK USB Dongle

A basic USB stick that contains the nRF52840 chip from Nordic and has 12 GPIOs available.

Additional detail: https://wiki.makerdiary.com/nrf52840-mdk-usb-dongle/

Hardware Features

  • Nordic nRF52840 System-on-Chip
    • ARM® Cortex®-M4F processor optimized for ultra-low power operation
    • Combining Bluetooth 5, Bluetooth Mesh, Thread, IEEE 802.15.4, ANT and 2.4GHz proprietary
    • On-chip NFC-A tag
    • On-chip USB 2.0 (Full speed) controller
    • ARM TrustZone® Cryptocell 310 security subsystem
    • 1 MB FLASH and 256 kB RAM
  • Up to 12 GPIOs available via headers
  • User programmable Button and RGB LED
  • On-board 2.4G chip antenna
  • 3.3V regulator with 1A peak current output
  • VBUS & VIN Power-Path Management
  • Convenient USB dongle form factor
  • Breadboard-friendly with dual 10-Pin headers
  • Measures 1.65" x 0.7" x 0.16" (42mm x 18mm x 4mm) without headers soldered in