Works out of the box with just about all Adafruit FeatherWings! (Wings that require the UART won't work)
Built in over-the-air bootloading capability.
Single MCU means better performance, lower overall power consumption, and lower production costs
Built in USB Serial converter for fast and efficient programming and debugging
The Adafruit Feather nRF52 Bluefruit is another easy-to-use all-in-one Bluetooth Low Energy board, with a native-Bluetooth chip(RF52832) and built in USB and battery charging. The RF52832 has twice the flash, SRAM and performance of the earlier nRF51-based Bluefruit modules. Best of all, it has Arduino IDE support so there is no 'helper' chip like the ATmega32u4. It's got tons of awesome peripherals: plenty of GPIO, analog inputs, PWM, timers, etc. Leaving out the extra microcontroller means the price, complexity and power-usage are all lower/better. Allowing you to run code directly on the chip, straight from the Arduino IDE as you would with any other MCU or Arduino compatible device.
Bluetooth Low Energy is the hottest new low-power, 2.4GHz spectrum wireless protocol. It's the only wireless protocol that you can use with iOS without needing special certification - supported by all modern smart phones. Excellent for use in portable projects that will make use of an iOS or Android phone or tablet. It also is supported in Mac OS X and Windows 8+.
Item Specifics ARM Cortex M4F (with HW floating point acceleration) running at 64MHz 512KB flash and 64KB SRAM BLE compatible 2.4GHz radio Up to +4dBm output power 1.7v to 3.3v with internal linear and DC/DC voltage regulators 19 GPIO, 8 x 12-bit ADC pins, up to 12 PWM outputs Power/enable pin 4 mounting holes Reset button Optional SWD connector for debugging Size: 2" x 0.9" x 0.28" Weight: 5.2g Lipoly battery and MicroUSB cable not included