The SparkFun Pro nRF52840 Mini is a breakout and development board for Nordic Semiconductors nRF52840 a powerful combination of ARM Cortex-M4 CPU and 2.4GHz Bluetooth radio. It features a USB interface (using the nRF52840s native USB support), which can be used to program, power, and communicate with the chip making it able to be used for any purpose (UART, I2C, SPI) that those of the Arduino Pro Mini could. The Pro nRF52840 Mini features a Raytac MDBT50Q-P1M module. This module connects the nRF52840 to a trace antenna, fits the IC into an FCC-approved footprint, and also includes a lot of the decoupling and timing mechanisms that would otherwise be required for a bare nRF52840 design.
STEMMA QT / Qwiic 4-pin 1mm Pitch White Female Connector Cable 150mm Long – Both Sidecan be purchased seperately.
Resources
Schematic
Eagle Files
Graphical Datasheet
Hookup Guide
Datasheet(MDBT50Q)
Bootloader Source Code
Nordic nRF5 SDK
Arduino Core for nRF Boards
CircuitPython nRF Port
GitHub

FAQs:
Q: What are the key features of the SparkFun Pro nRF52840 Mini?
A: The SparkFun Pro nRF52840 Mini features an ARM Cortex-M4 CPU, 2.4GHz Bluetooth radio, USB interface, LiPo battery charger, Qwiic connector, and breaks out essential I/O pins.
Q: What wireless protocols does the nRF52840 SoC support?
A: The nRF52840 SoC supports Bluetooth Low Energy (BLE), Bluetooth 5, ANT, and Nordic’s proprietary RF protocol.
Q: Can the SparkFun Pro nRF52840 Mini be powered by battery?
A: Yes, the board includes a LiPo battery charger and can be powered by a LiPo battery.
Q: What development environments are compatible with the SparkFun Pro nRF52840 Mini?
A: The board is compatible with Arduino, CircuitPython, and other development environments supporting the nRF52840 SoC.
Q: What applications can the SparkFun Pro nRF52840 Mini be used for?
A: The board is suitable for various applications, including wearable electronics, IoT devices, wireless sensors, and other Bluetooth-enabled projects.