Name: Adafruit Feather nRF52840 Sense
SKU: 532861

The Adafruit Feather Bluefruit Sense takes our popular Feather and adds a smorgasbord of sensors to make a great wireless sensor platform. This Feather microcontroller comes with Bluetooth Low Energy and native USB support featuring the nRF52840! This Feather is an 'all-in-one' Arduino-compatible Bluetooth Low Energy with built in USB plus battery charging. With native USB it works great with CircuitPython, too.

Like the Feather nRF52840, this chip comes with Arduino IDE support - you can program the nRF52840 chip directly to take full advantage of the Cortex-M4 processor, and then calling into the Nordic SoftDevice radio stack when you need to communicate over BLE. Since the underlying API and peripherals are the same for the '832 and '840, you can supercharge your older nRF52832 projects with the same exact code, with a single recompile!

This Feather is also a BLE-friendly CircuitPython board! CircuitPython works best with disk drive access, and this is the only BLE-plus-USB-native chip that has the memory to handle running a little Python interpreter. The massive RAM and speedy Cortex M4F chip make this a good match. Make centrals or peripherals with the ease of CircuitPython.

A chorus of supporting sensors surround the module so you can do all sorts of environmental and motion sensing:

ST Micro series 9-DoF motion -

Revision History:

As of February 20th, 2024 - We have replaced the discontinued LSM6DS33 with an The performance is improved however new firmware libraries will need to be used in order to read the accelerometer and gyroscope.

Features

ARM Cortex M4F (with HW floating point acceleration) running at 64MHz
1MB flash and 256KB SRAM
Native Open Source USB stack - pre-programmed with UF2 bootloader
Bluetooth Low Energy compatible 2.4GHz radio (Details available in the )
FCC / IC / TELEC certified module
Up to 8dBm output power
21 GPIO, 6 x 12-bit ADC pins, up to 12 PWM outputs (3 PWM modules with 4 outputs each)
Hardware SPI, UART, I2C and I2S on any pins
Pin #13 red LED for general purpose blinking, Blue LED for general purpose connection status, NeoPixel for colourful feedback
Power/enable pin
Measures 2.0" x 0.9" x 0.28" (51mm x 23mm x 7.2mm) without headers soldered in
Light as a (large?) feather - 6 grams
4 mounting holes
Reset button
SWD debug pads on bottom of PCB
Works out of the box with all of our ! (Even the UART-using ones like the GPS FeatherWing)