Adafruit Bluefruit LE UART Friend - Bluetooth Low Energy (BLE)

The Adafruit Bluefruit LE UART Friend is a simple and powerful way to add Bluetooth Low Energy (BLE) connectivity to your robot, electronics project, or art installation. With BLE now commonly found in smartphones and tablets, it's never been easier to integrate wireless communication into your creations.

This versatile module makes adding Bluetooth to any project with a hardware or software serial port a breeze. With built-in hardware flow control, it ensures reliable communication without the worry of losing data. Whether you're connecting to an Arduino, other microcontrollers, or even using a standard FTDI cable for debugging, this module is a perfect solution.

Key Features:

• Bluetooth Low Energy Connectivity: Quickly add BLE to your project for wireless communication with smartphones, tablets, and other BLE-enabled devices.
• Nordic UART Profile: Use the module as a data pipe for transparent communication between your iOS/Android device and project.
• AT Command Set: Take full control of the device's behavior, including defining GATT Services, modifying advertising settings, and checking important device information such as battery voltage and temperature.
• Multi-Functional: Beyond just UART communication, this module supports HID Keyboard emulation, Heart Rate Monitor functionality (with additional circuitry), and can even act as a UriBeacon.
• Over-the-Air Bootloading: Keep your module's firmware up to date without needing physical connections, just through an iOS or Android device.
• Easy-to-Use Mobile Apps: Use Adafruit’s free iOS and Android apps to prototype your project quickly. Control devices using a color picker, gamepad, and more, all from your phone or tablet.

Why Choose Adafruit's Bluefruit LE UART Friend?

Unlike many other BLE modules, the Adafruit Bluefruit LE UART Friend runs firmware designed entirely by Adafruit. This means we have full control over updates, features, and troubleshooting—ensuring that the device meets the highest standards and is always up to date. We also provide easy access to tutorials and library support for integration.

Technical Details:

• Processor: ARM Cortex M0 core running at 16MHz
• Memory: 256KB flash memory, 32KB SRAM
• UART Communication: 9600 baud, with hardware flow control (CTS+RTS required)
• Input Voltage: 5V safe, compatible with devices like Arduino Uno
• Power Regulation: On-board 3.3V voltage regulation
• Bootloader: Supports over-the-air firmware updates
• Dimensions: 21mm x 32mm x 5mm / 0.8" x 1.26" x 0.2"
• Weight: 3.4g

This BLE module is ideal for adding wireless control and communication to your projects, and it’s a great choice for hobbyists, educators, and professionals alike.