Adafruit Feather 32u4 Bluefruit LE with Stacking Headers - Assembled
The Feather 32u4 Bluefruit LE with Stacking Headers combines an ATmega32u4 microcontroller with a Bluetooth Low Energy module, USB connectivity, and LiPo battery charging — with stacking headers pre-soldered so you can plug into a breadboard and stack FeatherWings on top.
The Bluefruit module is built on the Nordic nRF51822 chipset and supports transparent UART serial communication, custom GATT services, HID keyboard emulation, UriBeacon broadcasting, and over-the-air firmware updates. BLE is supported by all modern smartphones and tablets (iOS, Android, Mac OS X, Windows 8+).
Key Features
- ATmega32u4 @ 8 MHz – 3.3V logic, 32KB flash, 2KB RAM
- Native USB – Built-in USB bootloader, serial debugging, and HID device support
- Bluetooth Low Energy (nRF51822) – iOS and Android compatible
- Pre-Soldered Stacking Headers – Ready for breadboard use and FeatherWing stacking
- UART Service – Transparent serial data pipe between BLE device and microcontroller
- AT Command Set – Full control over BLE behaviour, GATT services, and advertising
- BLE HID Keyboard – Act as a wireless keyboard for compatible devices
- Over-the-Air Updates – Update BLE module firmware via iOS or Android
- 20 GPIO Pins – Including 10 analogue inputs and 8 PWM outputs
- Hardware Serial, I2C & SPI – Full peripheral support
- Built-in LiPo Charger – 100 mA charging with status indicator LED
- Battery Monitoring – Battery voltage routed to an analogue pin via divider
- 3.3V Regulator – 500 mA peak current output
Specifications
- Dimensions – 51 × 23 × 8 mm (without headers)
- Weight – 5.7 g
- Mounting – 4 mounting holes
Also Available
- Feather 32u4 Bluefruit LE – Without headers
- Feather 32u4 Bluefruit LE – With Standard Headers
- Feather 32u4 Adalogger – With MicroSD card holder
- Feather 32u4 Basic Proto – With prototyping area
- Feather 32u4 FONA – With cellular connectivity
Ideal For
- FeatherWing-based BLE projects
- Phone-controlled projects via iOS or Android
- Wireless sensor data transmission
- BLE HID keyboards and controllers
Package Contents
- 1× Assembled and tested Feather 32u4 Bluefruit LE with pre-soldered stacking headers
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Feather 32u4 Bluefruit LE with Stacking Headers combines an ATmega32u4 microcontroller with a Bluetooth Low Energy module, USB connectivity, and LiPo battery charging — with stacking headers pre-soldered so you can plug into a breadboard and stack FeatherWings on top.
The Bluefruit module is built on the Nordic nRF51822 chipset and supports transparent UART serial communication, custom GATT services, HID keyboard emulation, UriBeacon broadcasting, and over-the-air firmware updates. BLE is supported by all modern smartphones and tablets (iOS, Android, Mac OS X, Windows 8+).
Key Features
- ATmega32u4 @ 8 MHz – 3.3V logic, 32KB flash, 2KB RAM
- Native USB – Built-in USB bootloader, serial debugging, and HID device support
- Bluetooth Low Energy (nRF51822) – iOS and Android compatible
- Pre-Soldered Stacking Headers – Ready for breadboard use and FeatherWing stacking
- UART Service – Transparent serial data pipe between BLE device and microcontroller
- AT Command Set – Full control over BLE behaviour, GATT services, and advertising
- BLE HID Keyboard – Act as a wireless keyboard for compatible devices
- Over-the-Air Updates – Update BLE module firmware via iOS or Android
- 20 GPIO Pins – Including 10 analogue inputs and 8 PWM outputs
- Hardware Serial, I2C & SPI – Full peripheral support
- Built-in LiPo Charger – 100 mA charging with status indicator LED
- Battery Monitoring – Battery voltage routed to an analogue pin via divider
- 3.3V Regulator – 500 mA peak current output
Specifications
- Dimensions – 51 × 23 × 8 mm (without headers)
- Weight – 5.7 g
- Mounting – 4 mounting holes
Also Available
- Feather 32u4 Bluefruit LE – Without headers
- Feather 32u4 Bluefruit LE – With Standard Headers
- Feather 32u4 Adalogger – With MicroSD card holder
- Feather 32u4 Basic Proto – With prototyping area
- Feather 32u4 FONA – With cellular connectivity
Ideal For
- FeatherWing-based BLE projects
- Phone-controlled projects via iOS or Android
- Wireless sensor data transmission
- BLE HID keyboards and controllers
Package Contents
- 1× Assembled and tested Feather 32u4 Bluefruit LE with pre-soldered stacking headers
