The Adafruit Bluefruit LE UART Friend adds Bluetooth Low Energy connectivity to any microcontroller or computer with a hardware or software serial port. With hardware flow control built in, you won't lose data during transmission. Connect via UART TX/RX pins, or use a standard FTDI cable for debugging and testing.

The onboard nRF51822 BLE module supports transparent UART data transfer via the Nordic UART profile, AT commands for full BLE configuration, custom GATT services and characteristics, HID keyboard emulation, heart rate monitor profiles, UriBeacon support, and over-the-air firmware updates.

Key Features

• nRF51822 BLE Module – Bluetooth Low Energy with Nordic UART RX/TX profile
• UART Interface – Hardware serial with flow control (CTS/RTS)
• AT Command Set – Full control over BLE behaviour, GATT services, advertising, RSSI, battery voltage, and more
• HID Keyboard – Emulate a Bluetooth keyboard for BLE HID-capable devices
• Heart Rate Monitor Profile – Standard BLE heart rate profile (add your own pulse-detection hardware)
• UriBeacon – Broadcast URLs to nearby devices using the Google beacon standard
• OTA Firmware Updates – Update BLE module firmware via iOS or Android
• iOS and Android Compatible – Works with the free Bluefruit Connect app (colour picker, sensor data, game pad)

Also Available

• Bluefruit LE SPI Friend – SPI interface version for microcontrollers without a spare UART
• Bluefruit LE Shield – Arduino shield form factor for easy plug-in BLE
• Bluefruit LE Micro – All-in-one ATmega32u4 + BLE board

Ideal For

• Adding BLE to any UART-capable microcontroller or computer
• Wireless communication with iOS and Android devices
• BLE-enabled robots, wearables, and art projects
• Bluetooth HID keyboard and beacon applications

Package Contents

• 1× Adafruit Bluefruit LE UART Friend (assembled and tested)
• 1× Header strip set