Feather nRF52840 sense

Bluefruit Feather NRF52840 sense - Plenty of sensors

The Adafruit Feather Bluefruit Sense is based on the "Feather nRF52840 Express" and adds several sensors to make it a great wireless sensor platform. This Feather based on nRF52840 also brings BLE (Bluetooth Low Energy) and native USB support!  As usual in the Feather familly, this 'all-in-one' Arduino-compatible + Bluetooth + Lipo battery charger + native USB would be a great microcontroler board for many data acquisition project.

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 CircuitPython friendly 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.

This board brings many sensors for many environmental and motion sensing:

• 9-DoF motion : LSM6DS33 Accel/Gyro + LIS3MDL magnetometer
• APDS9960 : Proximity, Light, Color, Gesture Sensor
• PDM Microphone : sound sensor
• SHT : Humidity sensor
• BMP280 : temperature and barometric pressure/altitude

Technical details

• ARM Cortex M4F @ 64 MHz (with hardware floating point acceleration)
• 1MB Flash
• 256KB SRAM
• Native Open Source USB stack - pre-programmed with UF2 bootloader
• Bluetooth Low Energy compatible 2.4GHz radio (see nRF52840 product specification)
• CE / 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)
• Pin #13 red USER LED, Blue LED connection status,
• NeoPixel User led
• Power/enable pin
• Size: 51mm x 23mm x 7.2mm (without headers soldered)
• Weight: 6 gr
• 4 mounting holes
• Reset button
• SWD debug pads on bottom of PCB
• Works out of the box with all of our Adafruit FeatherWings! (Even the UART-using ones like the GPS FeatherWing)