Bluefruit LE UART Friend


Availability: Retired

Out Of Stock

SKU: BLU-006 Manufacturer: Adafruit Industries Mfg Part Number: 2479



The Bluefruit LE UART Friend makes it easy to add Bluetooth Low Energy connectivity to anything with a hardware or software serial port. Connect to your Arduino or other microcontroller or even just a standard FTDI cable for debugging and testing.

This multi-function module can do quite a lot! For most people, they'll be very happy to use the standard Nordic UART RX/TX connection profile. In this profile, the Bluefruit acts as a data pipe, that can 'transparently' transmit back and forth from your iOS or Android device. There is even a nice hardware flow control so you won't have to think about losing data.

The board is capable of much more than just sending strings over the air. Thanks to an easy to learn AT command set, you have full control over how the device behaves, including the ability to define and manipulate your own GATT Services and Characteristics, or change the way that the device advertises itself for other Bluetooth Low Energy devices to see. You can also use the AT commands to query the die temperature, check the battery voltage, and more, check the connection RSSI or MAC address, and a whole lot more.


  • ARM Cortex M0 core running at 16MHz
  • 32KB SRAM
  • 5V-safe inputs (Arduino Uno friendly, etc.)
  • Bootloader with support for safe OTA firmware updates
  • Dimensions: 21mm x 32mm x 5mm / 0.8″ x 1.26″ x 0.2″
  • 256KB flash memory / 32KB SRAM
  • Transport: UART @ 9600 baud with HW flow control
  • On-board 3.3V voltage regulation
  • Easy AT command set to get up and running quickly
  • Weight: 3.4g


  Difficulty Level

Soldering Skill: Beginner
Prototyping Skill: Beginner
Programming Skill: Beginner

  Product Certifications

  Product Attributes

Weight: 4 g

  Warranty Policy

This product has a 30 Day Warranty from the date of delivery. The item must not be modified, abused, incorrectly hooked up, or used for purposes outside the original scope of design.

  Return Policy

This product is Final Sale and cannot be returned once purchased. 

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