Visible flicker on incandescent bulb (Germany, 230V 50Hz)

[reins-ch]

Up to about 80% power to my 25W incandescent bulb there is a very visible flicker of I am guessing 5Hz. Above 80% I guess the flicker is still there but not visible due to persistence of vision.

Is anyone else experiencing this, too?
Is this fixable?

[fabianoriccardi]

Hi,
I've also noted a small annoying flicker, visible from middle brightness. I think that the problem is in the algorithm: the timer continue to trigger every 16microseconds (clock running at 16mhz, no prescaler, 8bit counter), regardless the AC frequency. Given that the 2 frequencies are not ideal, they might diverge, so the relative time between the zero cross time and the real dimmer activation is varying.

Also I noted that this library raises an interrupt every 16 microseconds, making hard running user code. I'm developing a library for arduino/esp that triggers only when dimmer has to turn on. Of course, It doesn't present the flickering effect.

[waipeinan]

mad flicker on most of these

[fabianoriccardi]

Which library are you referring to?

[waipeinan]

i'm simply trying the examples in Lib-RBD-Dimmer-for-Mega-UNO-Leonardo and using a robotdyn zero crossing ac module..... just dipping in at this stage