The SparkFun Lumenati 90R is a bright, programmable, board with 3 RGB LEDs. Each of the 3 LEDs are an APA102C chip and can be individually instructed to display a specific colour and brightness. The Lumenati 90R gets its name from the 90° angle it takes and the direction the signal and power flows. Combining four of the 90R boards creates a 12 LED ring. These boards can also be daisy-chained and combined with different Lumenati boards to create larger displays and formations. The board uses castellated edge connectors at each end.

The APA102C addressable LEDs operate on +5V power input, as well as 0–5V logic levels for clock and data and employ a 2-wire communication protocol consisting of a clock line and a data line. While this requires one more wire than standard WS2812B LEDs, the advantage is that the communication with the LEDs becomes somewhat timing-independent, allowing you to run these directly off of a Raspberry Pi or other single-board computer that doesn’t normally allow for a long, precisely timed data stream without the use of additional hardware.

Please Note: In the event this board is used in a closed loop formation, there are small traces on the back of this board that can be cut to interrupt the data signals. Failure to do this could result in the untimely demise of LEDs