IOT Project MQTT

Install

ESP32

First refer to Espressif documentation to install ESP32 SDK
After setting up the shell you can run the following:

git clone git@github.com:Ortes/iot_mqtt.git
cd iot_mqtt
idf.py menuconfig # configure broker address in Example Configuration -> Broker
idf.py flash && idf.py monitor

MQTT topics are:

• esp/temp topic where temperature is published as a string
• esp/hum topic where temperature is published as a string
• esp/led topic where led state is published '0' is off '1' is on

Server

Mosquitto

Ubuntu

The port 1883 must be open.

sudo apt install mosquitto
mosquitto

NodeRed

The port 1880 must be open.

docker run -it -p 1880:1880 --name mynodered nodered/node-red

Given ip_address the ip address of the server where NodeRed is installed.
To setup the flow open ip_address:1880 then clic on import and import copy and paste the json in nodered/flow-nodered.json