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https://programarfacil.com/blog/raspberry-pi/introduccion-node-red-raspberry-pi/

====== Raspberry: ======
Como usuario normal:
  bash <(curl -sL https://raw.githubusercontent.com/node-red/linux-installers/master/deb/update-nodejs-and-nodered)

Activamos servicio y reiniciamos:
  sudo systemctl enable nodered.service
Ya tiene levantado el servicio:
<code>
uth@raspberrypi:~ $ netstat -putan| grep LISTEN
(Not all processes could be identified, non-owned process info
 will not be shown, you would have to be root to see it all.)
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      -                   
tcp        0      0 0.0.0.0:1880            0.0.0.0:*               LISTEN      -                   
tcp6       0      0 :::22                   :::*                    LISTEN      -   
</code>

Entramos en la URL, por ejemplo http://192.168.1.201:1880 e instalamos "node-red-contrib-google-home-notify". Seleccionamos Manage pallette

{{:informatica:linux:2022-06-09_18-17.png|}}

Lo buscamos e instalamos:
{{:informatica:linux:2022-06-09_18-19.png|}}


Reiniciamos la raspi. Ahora al entrar nos aparece en ouput el nodo de google:
{{:informatica:linux:2022-06-09_18-26.png|}}



Buscamos la IP de nuestro Google home
<code>
nmap -sP 192.168.1.0/24| grep -B2 "(Google)"

Nmap scan report for Google-Home-Mini.home (192.168.1.63)
Host is up (0.092s latency).
MAC Address: 7C:D9:5C:18:4A:5A (Google)
</code>


Editamos el nodo y le ponemos la IP