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Feather nRF52840 Sense Board

Adafruit Feather nRF52840 Sense Board is an all-in-one Arduino-compatible and BLUETOOTH® Low Energy (BLE) with built-in USB plus battery charge. This chip comes with Arduino IDE support, and the user can program the nRF52840 chip directly to take full advantage of the Cortex-M4 processor. Since the API and peripherals are the same for nRF52832 and nRF52840, users can supercharge the older nRF52832 projects with the same code by recompilation. The Nordic SoftDevice radio stack can be called to communicate over BLE. The Feather nRF52840 sense board is also a BLE-friendly CircuitPython board that works best with disk drive access. This board incorporates the only BLE-plus-USB-native chip with the memory to handle a running Python interpreter. The massive RAM and speedy Cortex M4F chip make this a good match.