Lighting design for a multi-story apartment with indirect LED lighting

I have worked with all types of lights in my house. I mainly use spotlights for cooking, pendant lights for eating, and indirect lights for coziness. Everything is also dimmable.

So I consider my eyes to be good, but I can’t manage to see flickering from PWM in reasonably state-of-the-art equipment.

If you have good eyes, you just need to know how to recognize PWM. Take an elongated object like a pen or, better yet, something longer in your hand and let it swing quickly. If you see a strobe effect, that is, a jerky appearing movement of the object, then you have made PWM visible. Besides the sensitivity of some people to PWM (and they are not only epileptics), there is a noticeable correlation between PWM and headaches, for example in offices or at trade show booths. As a pet owner, I am even more cautious about this. I have no real findings on this, but I acknowledge that animals’ eyes have a different perception bandwidth than we humans, and therefore I take preventative consideration, so to speak, without really knowing details or having scientific basis for it.

The visible is in the range of ~100 Hz, sensitive eyes can manage up to ~400 Hz.

The stroboscope effect is problematic especially with rotating machines.

At the 1kHz+ that I use here, I have not yet succeeded in perceiving a stroboscope effect either with waving or with a cordless screwdriver.

However, I admit that animals might react differently (especially also due to possibly occurring coil noises that are higher than the human perception threshold). So far, I have not experienced any reaction to the dimming from the neighbor’s cat.

So far, I have not experienced any reaction to the dimming from the neighbor's tomcat.

I have not experienced that myself either. What I have experienced is that changing the light in my son's nursery led to the cessation of complaints about discomfort.

I haven’t experienced that myself either.
What I have experienced is that changing the light in my son's nursery led to the cessation of complaints about discomfort.

I would much more likely attribute that to psychological effects than to the PWM ;) the other light will also differ in color temperature, brightness, and beam angle.

And do you know at how many Hz the PWM was running? As I said, under ~400Hz something like that can actually happen; above that, the human eye is simply too slow.

Where would you place the spot?

always in the center of the intended room. Centered toilet and centered shower.