====== Matriz LED ======

  * https://blog.logrocket.com/beyond-rest-using-websockets-for-two-way-communication-in-your-react-app-884eff6655f5
  * https://github.com/renat2985/rgb
  * https://github.com/kitesurfer1404/WS2812FX
  * https://www.sparkfun.com/sparkx/blog/2650 <- super clave

  * https://hackaday.com/2018/04/21/fast-led-matrix-graphics-for-the-esp32/?utm_source=dlvr.it&utm_medium=twitter
  * https://learn.adafruit.com/category/led-matrix?guide_page=2
  * https://learn.adafruit.com/adafruit-neopixel-uberguide/neomatrix-library
  * https://www.makeuseof.com/tag/weekend-project-build-giant-led-pixel-display/
  * https://www.multi3dllc.com/led-matrix-display/
  * https://wp.josh.com/2016/05/20/huge-scrolling-arduino-led-sign/
  * https://github.com/HobbyComponents/HCWS2812/blob/master/examples/HCWS2812_Message_Display_Example/HCWS2812_Message_Display_Example.ino
  * https://github.com/debsahu/NeoAnimationFX
  * https://github.com/toblum/McLighting/blob/master/Arduino/McLighting/McLighting.ino
  * https://learn.adafruit.com/guggenhat-bluetooth-le-wearable-neopixel-marquee-scrolling-led-hat-display/code
  * https://github.com/AaronLiddiment/LEDText/wiki/1.Setting-Up
  * https://github.com/AaronLiddiment/LEDSprites/wiki/5.Defining-Sprite-Image-Data
  * https://github.com/kitesurfer1404/WS2812FX
  * http://blog.hobbycomponents.com/?p=384
  * https://www.brainy-bits.com/arduino-16x16-matrix-frame/
  * https://sourceforge.net/projects/lcd-image-converter/?source=typ_redirect
  * https://www.brainy-bits.com/create-arduino-array-from-pictures/
  * https://www.youtube.com/watch?v=jkg7T7jlIzU
  * https://www.youtube.com/watch?v=o6_UYb6I4x4
  * https://old.reddit.com/r/javascript/comments/8yiujv/lowjs_brings_nodejs_to_microcontrollers_first/
  * https://github.com/neonious
  *