The Adafruit Feather nRF52840 Sense is a versatile development board that combines Nordic’s powerful nRF52840 Bluetooth LE microcontroller with a rich array of onboard sensors. This compact board features a 64MHz Cortex-M4F processor, 1MB of flash memory, 256KB RAM, and comes equipped with multiple sensors including temperature, humidity, pressure, light, color, gesture, proximity, sound, and motion (via accelerometer, gyroscope, and magnetometer). It’s compatible with both Arduino and CircuitPython programming environments, supports USB-C connectivity, and includes a built-in battery charging circuit for LiPo batteries, making it an excellent choice for portable IoT, wearable, and sensor-based projects that require Bluetooth Low Energy connectivity.