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these are the ultimate in LEDs
LEDs and other basic electronic components
Getting started is easy - simply connect SDA to your Arduino I2C data pin (On the UNO this is A4)
Adafruit have a library as well
Adafruit Bluefruit LE UART Friend - Bluetooth Low Energy (BLE) backlight these are the ultimate inWould 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
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