PIXIE CHROMA is a compact, chainable, dual 5x7 LED dot-matrix display platform (compatible with Arduino) that offers full RGB control with 8-bit global brightness control and high refresh rates.

Using only 1 GPIO for image transmission in Default Mode, or 4 GPIO in Quad Mode, very high refresh rates are possible with low processing overhead.*

Pixies	Max Frame Rate (Default)	Max Frame Rate (QUAD)
1	~477	N/A (Note 1)
2	~243	N/A (Note 1)
4	~122	~477
8	~61	~243
16	~30	~122
24	~20	~82

The 24-bit data of each LED is transmitted with unipolar RZ from the controller to DATA_IN of the first Pixie Chroma in the chain, and is forwarded from pixel to pixel. Any extra data is forwarded through DATA_OUT to the next Pixie in the chain. After an 80μs timeout, the new color data received thus far is latched and displayed.

For more information about the data protocol and timings of these LEDs, see the SK6805-EC15 datasheet.

_{* The frame rates listed here are theoretical maximums, not including overhead in the PixieChroma Arduino library for rendering and animation, which is subject to change.}