Lighting semi-detached house - Dali & DMX or REG-LED controller?

Yes, it is not cheap... but it is simply the easiest way.

That's why I wrote "a different radio system"
With Z-Z-Wave or something comparable it will probably be cheaper.

Or just try to get the green cable from one of the neighboring rooms through the wall (drill through one of the boxes) and attach the PM to the wall.

Hello everyone,

this year we are building a semi-detached house in Lower Bavaria. Currently, we are working on the lighting design, which we want to implement partly with KNX. We are still not quite sure which system (Dali & DMX or REG-LED Controller) to choose.

We have made a first draft and would like to hear/read your opinions about it...

What could be optimized here?? Which system would you find better for the lighting? The spots in the kitchen and bathroom are Dim2Warm; otherwise, we would also like to use LED RGBW(W).

We look forward to your suggestions for improvements.

Best regards

KNX control in connection with the lighting only makes sense if you want to switch different light scenes independently of each other. This then also includes wall lamps, picture lights, or the lighting of the living wall.
If, therefore, you only have one lamp in your bedroom, you don’t need KNX to control that lamp.
For example, in our bathroom, the following scenarios are implemented via a Merten KNX:
A) Only spot over the toilet
B) Only 3 spots over the washbasin
C) Only spot over the whirlpool
D) Spot and indirect lighting whirlpool
E) Only indirect lighting whirlpool
F) Everything on

The lighting design cost us 350€ once. However, afterwards the house was completely redesigned. But the consultation was so good that we were able to do the second lighting design ourselves.

Regarding brightness, we have had good results with the following data.
Standard brightness 150 lumens/m2 (lux)
Bathroom / kitchen / study 300 lux
Bedroom: possibly 100 lux
You can divide per room into 1× primary and up to 4× secondary lighting, which then creates the lighting scenes.

At the moment your hallway has around 18,000 lumens; at 150 lux, it could therefore be 120 m2, at 300 lux still 60 m2. In reality, for a semi-detached house, you are rather at 10 m2 and thus strongly overlit.

I haven't dealt with KNX-RF so far, but don't I need a line coupler (200 euros) and the presence detector (no idea, 100 euros?)? That would be quite steep in total, if I don't need KNX-RF elsewhere.

If you already find 300€ "steep": You do know that a very simple KNX system already costs 5000€ and up?

I wouldn't like 6,000K in the hallway. We once tested 3,200, which felt a bit too cool for us. Now we are waiting for some with adjustable light color.

KNX control in connection with lighting is only worth it if you want to switch different light scenes independently. This also includes wall lamps, picture lights, or the lighting of the living wall.
If you therefore only have one lamp in your bedroom, then you don't need KNX there to switch this lamp.

and

If you already find €300 "steep": but you do know that a very simple KNX system already costs €5000 and up?

I'll get myself a beer and a bag of chips and look forward to what’s coming next [emoji23][emoji6]

If you already find €300 "steep": Are you aware that a very simple KNX system already costs €5000 and up?

I planned and implemented my KNX installation completely myself, so I know the cost of every cable. [emoji6]

Regarding my PM problem, a cheaper solution can surely be found. The advantage of KNX-RF would be that I would stay within one system and wouldn’t need a gateway or something similar. But we’ll see.

Why would you equip the whole house with KNX and then stop at the lighting in rooms with just one lamp or similar? The cost to control this lamp via KNX is €20 (one switching channel) or €60 (one dimming channel). Also, in that room you would have to run a classic connection from the switch to the lamp and wouldn’t be able to use KNX switches there.