I am working on my home automation system and till now I am able to automate one room using RPI 3b+.
I would like to add another room to my list and for this I recently got RPI Zero.
I am searching for some solution where my RPI 3b+ is the master device and RPI Zero will act as slave device.
I am thinking of some method where when I open my Open Hab page on RPI 3b+, it should also have option to view my RPI Zero devices (things, items, etc) and I can control these devices from there itself.
Till now I got some fair idea about MQTT but don’t know how to make it work. Please be noted that I am planning to have them connected via WiFi.
Request you all experts to please guide me on this Topic.