====== ESP32 ======

===== Bluetooth =====

  * https://electropeak.com/learn/esp32-bluetooth-low-energy-ble-on-arduino-ide-tutorial/
  * https://learn.sparkfun.com/tutorials/esp32-ota-updates-over-ble-from-a-react-web-application/all

====== Referencias ======
  * Comunicación entre varios ESP32 https://randomnerdtutorials.com/esp-now-esp32-arduino-ide/