How to control 4-zone soffit lighting (7 circuits) with only 3-core cable?

I was directed to this site following a discussion
https://www.elektroda.pl/rtvforum/topic2391872.html

The conclusion is that, without wireless control, it is not possible to control 4 zones (7 circuits) using the cables I have (only three wires)

I want to be able to control 4 zones from a single location
and switch them on in any configuration,
the limitation is the number of wires laid (three-core),

please could you advise how/with what this can be achieved
- some sort of inexpensive solution
- or a more expensive but expandable one (control of roller blinds, additional lighting, perhaps heating, etc.)


Current connection


Roof plan (colours indicate zones; connections show where I can add additional wires


facade plan (red crosses indicate places where I cannot add additional cables)

I’ve had a look at the discussion you linked to. EXTA FREE [Zamel] sprang to mind, but as you don’t want a radio, perhaps you should have a look at DOMITO GARDEN... A variant of the DOMITO system; as the units are found in natural environments [gardens], they’re housed in airtight casings and communicate via the power cable...

I’ll look at it from a different angle. Why are you creating lighting zones in the soffit at all? After all, relatively dim bulbs are used there; it’s meant to illuminate the façade at night. I’ve actually set mine up so that the soffit lighting is on a single circuit; I’ve got 15 x 5W LEDs there, which switch on when it gets dark and off in the morning. In addition, I have LED spotlights on each wall, controlled by Fibaro – I use them to light up the area around the house as and when needed.

The answer is simple:
that’s what I’d thought of, but unfortunately only after the façade had been finished;
I’m leaning towards the option of not fiddling about with zones and connecting everything to a single circuit, or perhaps going a bit over the top with the light fittings
(LED + halogen – the halogen ones are also LED)
http://www.massive.be/Austria-zuma-59535-17-10.html
controlled by quickly flicking the switch

In my opinion, forget about those fittings. Just fit some standard halogen sockets and use Osram Parathom PAR16 GU10 5W, 2700K or 3000K, or if you prefer a cooler light, 6000K (you can find them in Castorama and Leroy Merlin for around 43 PLN each, and on alleeeenietanio....pl, too). They only draw 5W, yet shine just as brightly as 35W halogen bulbs – the sort you have in those ‘hybrid’ fittings. I fitted LEDs in the ceiling soffit for one simple reason – I can’t be bothered to climb a ladder once or twice a year to replace burnt-out bulbs. With LEDs, the likelihood of having to do that is much lower.