MQTT et communication IoT

## MQTT — protocole IoT leger
Communication entre appareils connectes.
## Installer Mosquitto (broker MQTT)
sudo apt install mosquitto mosquitto-clients
## Code Python publisher
import paho.mqtt.client as mqtt
client = mqtt.Client()
client.connect("localhost", 1883)
client.publish("maison/salon/temperature", "25.5")
## Applications
Envoyer des donnees de capteurs vers le cloud ou une application mobile.