{"title":"Adafruit Bluefruit LE UART Friend - Bluetooth Low Energy (BLE)","handle":"adafruit-bluefruit-le-uart-friend-bluetooth-low-energy-ble","url":"/products/adafruit-bluefruit-le-uart-friend-bluetooth-low-energy-ble","description":"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.\n\nThe 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.\n\nKey Features\n\n\nnRF51822 BLE Module – Bluetooth Low Energy with Nordic UART RX/TX profile\n\nUART Interface – Hardware serial with flow control (CTS/RTS)\n\nAT Command Set – Full control over BLE behaviour, GATT services, advertising, RSSI, battery voltage, and more\n\nHID Keyboard – Emulate a Bluetooth keyboard for BLE HID-capable devices\n\nHeart Rate Monitor Profile – Standard BLE heart rate profile (add your own pulse-detection hardware)\n\nUriBeacon – Broadcast URLs to nearby devices using the Google beacon standard\n\nOTA Firmware Updates – Update BLE module firmware via iOS or Android\n\niOS and Android Compatible – Works with the free Bluefruit Connect app (colour picker, sensor data, game pad)\n\n\nAlso Available\n\n\nBluefruit LE SPI Friend – SPI interface version for microcontrollers without a spare UART\n\nBluefruit LE Shield – Arduino shield form factor for easy plug-in BLE\n\nBluefruit LE Micro – All-in-one ATmega32u4 + BLE board\n\n\nIdeal For\n\nAdding BLE to any UART-capable microcontroller or computer\nWireless communication with iOS and Android devices\nBLE-enabled robots, wearables, and art projects\nBluetooth HID keyboard and beacon applications\n\n\nPackage Contents\n\n1× Adafruit Bluefruit LE UART Friend (assembled and tested)\n1× Header strip set\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":9354,"title":"Default Title","sku":"AF-2479","price":35.18,"on_sale":false,"in_stock":true,"available_quantity":17,"option1":"Default Title"}]}