The Feather nRF52840 Sense takes the popular Feather nRF52840 Express and adds a suite of on-board environmental and motion sensors. It features Bluetooth Low Energy, native USB, CircuitPython and Arduino support, plus sensors for acceleration, gyroscope, magnetometer, proximity, light, colour, gesture, humidity, temperature, barometric pressure, and sound — all in a single board.

On-board Sensors

• LSM6DS33 – 6-DoF accelerometer and gyroscope
• LIS3MDL – 3-axis magnetometer (combined 9-DoF motion)
• APDS9960 – Proximity, light, colour, and gesture sensor
• SHT40 – Humidity sensor
• BMP280 – Temperature and barometric pressure/altitude sensor
• PDM Microphone – Digital sound sensor

Key Features

• nRF52840 Processor – ARM Cortex M4F at 64 MHz with hardware floating point acceleration
• 1 MB Flash + 256 KB SRAM – 4× the resources of the nRF52832
• Native USB – CDC serial, HID, MIDI, and mass storage support
• Bluetooth Low Energy – 2.4 GHz BLE radio with up to +8 dBm output power
• FCC / IC / TELEC Certified – Pre-certified wireless module
• Arduino + CircuitPython – Full support for both development environments
• UF2 Bootloader – Drag-and-drop firmware loading
• NeoPixel + LEDs – RGB NeoPixel, red LED (pin #13), and blue connection status LED
• 21 GPIO Pins – 6× 12-bit ADC, up to 12 PWM outputs (3 modules × 4 channels)
• LiPo Battery Support – JST connector with built-in charger and battery voltage monitoring
• SWD Debug Pads – On the bottom of the PCB for advanced debugging
• Full FeatherWing Compatibility – Works with all FeatherWings including UART-based ones
• Compact Design – 51 mm × 23 mm × 7.2 mm, weighing 6 g

Also Available

• Feather nRF52840 Express – Same board without on-board sensors
• Feather nRF52 Bluefruit LE – nRF52832 with Arduino support

Ideal For

• Wireless environmental monitoring
• Motion tracking and gesture detection
• Sound-reactive BLE projects
• Rapid sensor prototyping without external breakouts

Package Contents

• 1× Feather nRF52840 Sense
• 1× Header pin set