AC Dimmer Flickering at Low Brightness Levels Feb 26, 2026 0 35 TL;DR: Irregular flicker at 5–25% brightness (stable at 50%+) is caused by ZC signal jitter, ISR delays from WiFi on ESP32/ESP8266, or TRIAC holding-current misses. Fix: set a minimum stable level (10... ESP32 ac-dimmer halogen incandescent troubleshooting tutorial Read more
AC Dimmer Doesn't Turn Off: Residual Glow at 0% Feb 26, 2026 0 39 TL;DR: Setting the dimmer to 0% does not guarantee the lamp turns off. TRIAC holding current keeps the switch conducting at low loads. Fix: call dimmer.setState(OFF) or setMode(OFF_MODE) instead of se... TRIAC ac-dimmer halogen incandescent troubleshooting tutorial Read more