Light Dimmer Circuit with Arduino | Circuit X Code
Triac/Optocoupler Dimmer - Project Guidance - Arduino Forum
AC Light Dimmer Module, 2 Channel, 3.3V/5V logic, AC 50/60hz, 220V/110V|EL Products| - AliExpress
AC Light Dimmer Module For PWM Controller 1 Channel 3.3V/5V Logic AC 50hz 60hz 220V 110V RobotDyn for Arduino - products that work with official Arduino boards
How to build a digital 220V AC dimmer [using Arduino] | Elektor Magazine