Please consider the latest version - NRF52840-PDK
nRF52-DK is a stand-alone development board for developing Bluetooth® Smart (formerly known as Bluetooth low energy), ANT, or 2.4GHz proprietary applications. The kit is ideal for rapid prototyping and development with the nRF52-DK device. The board is Arduino Uno pin compatible which allows 3rd party Arduino Uno
compatible shields to be connected to the board.
Connector pins for all device I/O and interfaces are available on the development board. There are 4 x LEDs and 4 x buttons that are user-programmable, and the board also features a coin-cell battery holder for development evaluation and test in various situations. There is a dedicated connector for the external NFC antenna used for the NFC-A tag emulation.
The nRF52 Preview DK board is supported by Nordic Semiconductor SoftDevices which are protocol stacks available as downloads from www.nordicsemi.com.
The kit is supported by the nRF52 SDK which contains numerous ready-to-use examples for Bluetooth Smart, ANT, and 2.4GHz proprietary applications. The kit is compatible with the standard Nordic tool-chain using Keil, IAR, and GCC.