{"title":"Adafruit Bluefruit LE Shield - Bluetooth LE for Arduino","handle":"adafruit-bluefruit-le-shield-bluetooth-le-for-arduino","url":"/products/adafruit-bluefruit-le-shield-bluetooth-le-for-arduino","description":"The Adafruit Bluefruit LE Shield adds Bluetooth Low Energy connectivity to your Arduino in a plug-in shield form factor. Solder the included headers, stack it on your Arduino, and start communicating wirelessly with iOS and Android devices — no special iOS certification required.\n\nThe shield connects via hardware SPI (MISO, MOSI, SCK) plus chip select (D8), interrupt (D7), and reset (D4) — all configurable via solder jumpers. The onboard nRF51822 BLE module supports transparent UART data transfer, AT commands for full BLE configuration, custom GATT services, HID keyboard emulation, and over-the-air firmware updates.\n\nKey Features\n\n\nnRF51822 BLE Module – Bluetooth Low Energy with Nordic UART RX/TX profile\n\nArduino Shield Form Factor – Plug directly into Arduino Uno, Leonardo, Mega, and compatibles\n\nSPI Interface – Hardware SPI with configurable chip select, interrupt, and reset pins\n\nAT Command Set – Full control over BLE behaviour, GATT services, advertising, and more\n\nHID Keyboard – Emulate a Bluetooth keyboard for BLE HID-capable devices\n\nUriBeacon – Broadcast URLs to nearby devices\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 – Breakout board version for any microcontroller\n\nBluefruit LE Micro – All-in-one ATmega32u4 + BLE board\n\n\nIdeal For\n\nAdding BLE to existing Arduino projects\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 Shield (fully assembled)\n1× Header strip set (for soldering)\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":9901,"title":"Default Title","sku":"AF-2746","price":38.92,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":31,"option1":"Default Title"}]}