Adafruit Feather M0 Bluefruit LE


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SKU: 1012198
  1. ATSAMD21G18 @ 48MHz with 3.3V logic/power
  2. 256KB of FLASH + 32KB of RAM
  3. 3.3V regulator with 500mA peak current output
  4. USB bootloader and serial port debugging
  5. Built-in 100mA lipoly charger with charging status indicator LED


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Brand: Adafruit
Category: ARM Microcontroller
Tags: M0 Bluefruit LE

This is the Adafruit Feather M0 Bluefruit LE – our take on an all-in-one Arduino-compatible + Bluetooth Low Energy with built-in USB and battery charging. It’s an Adafruit Feather M0 with a BTLE module, ready to rock!

Bluetooth Low Energy is a hot, low-power, 2.4GHz spectrum wireless protocol. In particular, it’s the only wireless protocol that you can use with iOS without needing special certification, and it’s supported by all modern smartphones. This makes it 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+.

At the Feather M0’s heart is an ATSAMD21G18 ARM Cortex M0 processor, clocked at 48 MHz and at 3.3V logic, the same one used in the new Arduino Zero. This chip has a whopping 256K of FLASH (8x more than the Atmega328 or 32u4) and 32K of RAM (16x as much)! This chip comes with a built-in USB so it has a USB-to-Serial program & debug capability built-in with no need for an FTDI-like chip.

To make it easy to use for portable projects, we added a connector for any of our 3.7V Lithium polymer batteries and built-in battery charging. You don’t need a battery, it will run just fine straight from the micro USB connector. But, if you do have a battery, you can take it on the go, then plug in the USB to recharge. The Feather will automatically switch over to USB power when it’s available. We also tied the battery thru a divider to an analog pin, so you can measure and monitor the battery voltage to detect when you need a recharge.

The Feather M0 Bluefruit LE uses the extra space left over to add our excellent Bluefruit BTLE module + two status indicator LEDs.


  1. ATSAMD21G18 @ 48MHz with 3.3V logic/power
  2. No EEPROM
  3. 3.3V regulator with 500mA peak current output
  4. USB native support comes with USB bootloader and serial port debugging
  5. You also get tons of pins – 20 GPIO pins
  6. Hardware Serial, hardware I2C, hardware SPI support
  7. 8 x PWM pins
  8. 10 x analog inputs
  9. 1 x analog output
  10. Built in 100mA lipoly charger with charging status indicator LED
  11. Pin #13 red LED for general purpose blinking
  12. Power/enable pin

Package Includes:

1 x Adafruit Feather M0 Bluefruit LE

SKU: 1012198 Category: Tag:




Flash Memory

256 KB



Peak Current


Length (mm):


Width (mm):


Height (mm):


Weight (g):


Shipping Weight 0.01 kg
Shipping Dimensions 5 × 3 × 1 cm
15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects. Replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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Country Of Origin: United States