Adafruit Bluefruit LE UART Friend - Bluetooth Low Energy (BLE) backlight Getting started is easy -

Getting started is easy - simply connect SDA to your Arduino I2C data pin (On the UNO this is A4)

LEDs and other basic electronic components

improved efficiency for high-drain devices

barometric pressure and humidity

OLED Display Details:

Adafruit Bluefruit LE UART Friend - Bluetooth Low Energy (BLE) backlight Getting started is easy -Would you like to add powerful and easy to use Bluetooth Low Energy to your robot, art or other electronics project? Heck yeah! With BLE now included in modern smart phones and tablets, its fun to add wireless connectivity. So what you really need is the new Adafruit Bluefruit LE UART Friend! The Bluefruit LE UART Friend makes it easy to add Bluetooth Low Energy connectivity to anything with a hardware or software serial port. Adafruit even has nice