I use this RobotDyn AC dimmer module with ESPHome, and the brightness is close to constant but not quite. It has a minor flicker that is not instantly noticeable but slightly disturbing long-term. Is this to be expected?
My sense is that AC dimming is a messy solution because rather than directly controlling the LEDs, there’s an intermediate power supply of the bulb driven by AC voltage, which is not designed with high-quality dimming in mind, not even for dimmable bulbs.
esp32: board: az-delivery-devkit-v4 framework: type: arduino output: - platform: ac_dimmer id: dimmer1 gate_pin: 16 method: leading init_with_half_cycle: false zero_cross_pin: number: 17 mode: input: true inverted: yes light: - platform: monochromatic output: dimmer1 name: Dimmerized Light
I’ve tried all 4 relevant combinations of the
init_with_half_cycle parameters, and I’ve also tried 2 dimmable bulbs, but I haven’t achieved constant dimming without minor flickers.
I’m interested in your experience in general and in specific with various dimmable bulbs and dimmers.