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Portable BLE Development Made Easy with the Feather M0 Bluefruit LE

The Adafruit Feather M0 Bluefruit LE combines a powerful ATSAMD21G18 ARM Cortex M0 microcontroller with built-in Bluetooth Low Energy for compact, battery-friendly wireless projects. It is part of Adafruit’s Feather ecosystem, giving you a thin, lightweight board that is easy to power from USB or a 3.7V LiPo battery.

If you want a development board that can talk directly to modern smartphones and tablets, this is a great option. The onboard Bluefruit LE module lets you build wireless controllers, sensor dashboards, BLE data links, mobile-connected gadgets, wearables, and portable IoT-style prototypes without needing a separate Bluetooth add-on board.

Important: This board uses 3.3V logic. It includes a built-in LiPo charger and can run from micro USB or a 3.7V lithium polymer battery, but the battery and micro USB cable are not included.

Why you’ll love it

  • All-in-one wireless board: Microcontroller plus Bluetooth Low Energy on a single compact Feather board
  • Powerful ATSAMD21G18: 32-bit ARM Cortex M0 running at 48MHz for faster and more capable projects
  • BLE support for phones and tablets: Great for iOS and Android connected builds
  • Battery-ready design: Built-in 100mA LiPo charger for portable projects
  • USB native support: Easy programming and serial debugging over micro USB
  • Feather ecosystem compatible: Works nicely with FeatherWings and other Feather accessories

What you can build

This board is ideal for BLE sensor nodes, smartphone-controlled LEDs, portable data loggers, wireless wearables, custom remotes, HID-style projects, battery-powered prototypes, and interactive builds that need a compact microcontroller with Bluetooth Low Energy.

Starter bundles

Pair it with a 3.7V LiPo battery, micro USB cable, header pins, and a breadboard for easy development. You can also expand it with compatible FeatherWing add-ons for displays, sensors, motor control, and more.

Recommended add-ons

Add an OLED display, NeoPixel LEDs, sensors, or a FeatherWing module to create a more complete wireless project. A LiPo battery is highly recommended if you want to take advantage of the board’s portable design.

Technical specifications

Product Adafruit Feather M0 Bluefruit LE
Main MCU ATSAMD21G18 ARM Cortex M0
Clock Speed 48 MHz
Logic Voltage 3.3V
Wireless Module Bluefruit LE module with Nordic nRF51822 chipset
Flash Memory 256 KB
RAM 32 KB
GPIO 20 GPIO pins
PWM Outputs 8
Analog Inputs 10
Analog Output 1
Interfaces Hardware Serial, I2C, and SPI
USB Native USB support via micro USB
Regulator 3.3V regulator with 500mA peak current output
Battery Support 3.7V LiPo/Li-Ion battery connector with built-in 100mA charger
Board Size 51.2mm × 22.8mm × 8mm
Weight 5.7g

Pinout & power notes

The Feather M0 Bluefruit LE offers a generous set of GPIO for a compact board, including hardware Serial, I2C, and SPI. It also includes a battery voltage divider so you can monitor battery level in code, which is especially useful for low-power portable devices.

You can power the board directly from micro USB while programming, or from a 3.7V LiPo battery for mobile use. When USB is connected, the board automatically handles charging and power switching.

What’s in the box

1 × Adafruit Feather M0 Bluefruit LE
Header strip included for soldering

Frequently Asked Questions

Can this connect to a phone? Yes. This board has built-in Bluetooth Low Energy, making it suitable for projects that communicate with many modern iOS and Android devices.
Does it include a battery? No. The board supports 3.7V LiPo batteries and has onboard charging, but the battery is sold separately.
Is this Arduino compatible? Yes. It comes with a USB bootloader and is designed for use with the Arduino IDE.
Is this a 5V board? No. The Feather M0 Bluefruit LE uses 3.3V logic, so connected peripherals should also be compatible with 3.3V logic levels.
What makes this different from a regular Feather M0? This version adds the Bluefruit LE module, giving you built-in Bluetooth Low Energy for wireless communication and app-based control.

Adafruit Feather M0 Bluefruit LE - ATSAMD21 with BLE

Adafruit Feather M0 Bluefruit LE - ATSAMD21 with BLE

Low stock: 1 left

Product Code

2995

₱ 2,516.00
₱ 2,516.00
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