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Cool Idea, but i think, you drive the WS2812 out of spec. If you Power them with 5V the Data-Voltage also must be 5V. The ESP8266 only gives 3,3V. The Result: Some Stripes may be flickering and producing colours you don´t want. I made the experience by building a wordclock with this components, some stripes worked well, others not. Now i use a SN74HTC123 Level-Shifter
Question about Sender:You make 4 Measurements and divide the result by 4 to get the average of the values. But what is dividing by 197.0 or any other value for. Btw, nice instructable
Thank you very much for your fast reply, your words sound logic absolutely!!!
ESP8266+Websocket server RGB LED controller
8x8x8 RGB LED-Cube