Arduino light dimmer that controls 220V AC lamp brightness. LM393 for zero crossing detection. BT136 triac supplies lamp depending on firing angle (alpha).
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AC Light Dimmer Using TRIAC & ESP32.
3 Channels Dimmer - Suggestions for the Arduino Project - Arduino Forum
3 Pcs Genuine PWM AC Programmable Light Dimmer 110V - 220V AC Module Controller Compatible 50/60Hz 3.3V/5V Logic Compatible with Arduino, STM, Arm
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Arduino Controlled Light Dimmer : 16 Steps - Instructables
Arduino Controlled Light Dimmer - 16 Steps - Instructables PDF, PDF, Resistor