Adafruit Feather nRF52840 Express

The Adafruit Feather nRF52840 Express combines state-of-the-art Bluetooth® Low Energy and native USB support, powered by the nRF52840 chipset. Designed as a versatile, all-in-one Arduino-compatible board, it features built-in USB and battery charging for maximum convenience.

Specifications include an ARM Cortex M4F processor with 1 MB FLASH and 256KB SRAM, extensive GPIO options, and hardware interfaces like SPI, UART, and I2C. The module's FCC, IC, and TELEC certification ensure reliable wireless communication up to +8dBm output power.

Perfectly ready for CircuitPython, this board boasts a NeoPixel LED for custom status updates and 2 MB of QSPI Flash to store your projects. With UF2 bootloader pre-programming, it supports easy updates via command-line UART or mass-storage-drive methods, incredibly advantageous for firmware updates.

The Feather automatically switches between battery and USB power, with the ability to monitor battery voltages through an analog pin. Enhanced BLE functionality via the Bluefruit LE module supports creating custom GATT services while using iOS or Android apps for wireless control and data management.

Each board is delivered fully assembled with a USB bootloader for quick usage in the Arduino IDE or CircuitPython, complete with solder-ready headers for seamless integration into a solderless breadboard setup.