FAQ | RBDIMMER

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Multi-Channel AC Dimmer Control: 2CH and 4CH Guide

Feb 26, 2026

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TL;DR: 2CH 8A and 4CH 10A modules share one ZC pin across all channels. Each channel has its own DIM pin. One interrupt call in code covers all channels; brightness is set independently per channel ha...

Arduino ESP32 ESP8266 RBDdimmer ac-dimmer multi-channel tutorial

AC Dimmer via MQTT with ESP32 and ESP8266

Feb 26, 2026

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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

AC Dimmer with Home Assistant: ESPHome and DimmerLink Guide

Feb 26, 2026

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TL;DR: Two integration paths exist. Path A (standard ESPHome ac_dimmer platform) is simple but causes ISR/WiFi conflicts on dual-core ESP32. Path B (DimmerLink ESPHome component) offloads TRIAC timing...

ESP32 ac-dimmer dimmerlink home-automation tutorial

ESPHome YAML for AC TRIAC Dimmer: Standard and DimmerLink

Feb 26, 2026

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TL;DR: Two ESPHome integration methods exist. The standard ac_dimmer platform works out-of-the-box but has ISR/WiFi conflicts on ESP32. The DimmerLink external component uses a hardware controller for...

ESP32 ac-dimmer dimmerlink esphome tutorial

Which AC Dimmer Module to Choose: Complete Buyer's Guide

Feb 26, 2026

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FAQ

TL;DR: Three questions determine your choice: (1) load type — resistive (heater, incandescent) or inductive (motor); (2) load power in watts → calculate amps → pick a rating with a ×1.3 safety margin;...

Arduino ESP32 TRIAC ac-dimmer buyer-guide dimmerlink tutorial

LED Lamps with AC Dimmer: TRIAC or MOSFET — Compatibility Guide

Feb 26, 2026

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FAQ

Short answer: There are two types of AC dimmers: TRIAC (leading edge — for incandescent bulbs, halogen, heaters) and MOSFET AC dimmer (trailing edge — purpose-built for LED lamps). If an LED lamp flic...

Arduino LED MOSFET TRIAC ac-dimmer trailing-edge tutorial

Trailing Edge vs Leading Edge: Which Dimmer Method to Choose

Feb 26, 2026

0 30

FAQ

Short answer: Leading edge is the standard TRIAC dimmer — it opens the load in the second half of each AC half-cycle (best for incandescent bulbs and heaters). Trailing edge is a MOSFET dimmer — it op...

Arduino LED MOSFET TRIAC ac-dimmer leading-edge trailing-edge tutorial

LED Flickering with AC Dimmer: TRIAC or MOSFET — Causes and Fixes

Feb 26, 2026

0 32

FAQ

Short answer: LED flickering with an AC dimmer has three distinct root causes. Types 1 and 2 are caused by TRIAC architectural incompatibility with LED lamps — the hardware fix is a MOSFET AC dimmer (...

Arduino ESP32 LED MOSFET TRIAC ac-dimmer flicker tutorial

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