DFRobot Rainbow LED Ring (Arduino Compatible) -   * Supply voltage: 5V  * Comes with pre-burned bootloader which has several built in led scripts  * Can be programmed using standardArduino IDE by FTDI breakout board  * Interface: Serial/I2C/Digital pins  The DFRobot Rainbow LED Ring (Arduino Compatible) is probably the most beautiful LED ring ever.Each led on the...
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