https://www.luisllamas.es/que-es-mqtt-su-importancia-como-protocolo-iot/
https://recretronica.wordpress.com/
https://programarfacil.com/podcast/esp8266-wifi-coste-arduino/
https://domoticaencasa.es/tutorial-cambiar-firmware-a-los-dispositivos-tuya-smart-life-sin-soldar/
https://andrew-klimovski.blogspot.com/2017/06/home-automation-using-black-bean-rm.html
