Category MQTT

MQTT projects covering brokers, sensors, messaging and device communication used across Realm Labs automation systems.

Projects, MQTT, Raspberry Pi

Building a Smarter Model Lighting Controller with ESP32 and MOSFETs

ESP32 and MOSFET smart model lighting controller

A practical RealmLabs project exploring how to replace a relay-based model lighting setup with an ESP32 and MOSFETs for cleaner wiring, independent channels, dimming, breathing effects and future audio.

Paul Huckle
15 September 2026

Lab Notes, Home Automation, MQTT, Networking

Moving MQTT to a New Server Without Breaking Every Automation

MQTT server migration without breaking home automations

MQTT is one of those services that quietly becomes more important the longer you use it. At first, I was only using it for a few simple messages. Then more things started depending on it. The Raspberry Pi used it.…

Paul Huckle
19 August 2026