AC Dimmer via MQTT with ESP32 and ESP8266 Feb 26, 2026 0 16 TL;DR: Install rbdimmerESP32 (for ESP32) or RBDdimmer (for ESP8266) plus PubSubClient . Connect to your MQTT broker, subscribe to a brightness topic, and call rbdimmer_set_level() in the callback. Pub... ESP32 MQTT ac-dimmer home-automation tutorial Read more