LED - Starry Ceiling

What about just using the roof as a screen and projecting onto it using this:

Many other low-voltage projectors are available.

Not quite sure what the point of it is. If you want real sky, then you would either need to move to a place where clear skies are the norm, or put a gynormous display on the ceiling and feed it from a video source of some kind, unless you fancy building yourself a planetarium. I believe you can get portable ones now that they can set up in a school playground. Brian

Look at this

No an option ..... as projector would need to be near hot tub to project up ..... don't wantt leccy near tub.

The point is to have some 'interesting' light under the roof, rather than just look at rafters.

I didn't want to site Hot Tub elsewhere, this roofed over section is perfect location. (for us)

Thanks .. looks good for a kids room, but can't put a projector there, looking for something to be fixed above and illuminate down.

Outdoor fairy lights? Pretty well designed for this job.

Don't fancy having any electric above my head in a hot Tub ... think it too risky with Heat and Humidity .... we will fit them along the 10m of Pergola running up to decking.

Looks like a possible solution at

Found a company that does all the parts for DIY ... their web site even has DIY videos Product range is wide -

Outdoor LED fairly lights are low voltage.

Individual white LEDs typically draw 10-20 milliAmpa at 2.5-4.0 Volts, RGBs maybe three times that at 5 Volts, just make sure the PSU is properly isolated. You could run them from a battery to be really sure that they're isolated.

I've a few green and yellow high efficiency LEDS running at around 300uA and they can be easily seen from 10+ metres away in medium to low light (dusk) conditions.

I also have the same type of LEDs (2 OFF) running at a lower current continuously from 4 off AAA size alkaline batteries for a period of around 3 months.

Yellow and green are generally more efficient but don't really make me think of twinkling stars.

I found an LED thing on our driveway, it ran for weeks (no obvious way to turn it off) and didn't have room for half an AAA.I don't know where it went, or I'd have pulled it apart to see what it was.

I have some LED lamps of te GU50 persuasion running off fully insulated

A 12V system is not hard for a D-I-Yer to arrange. With batteries even for the times of grid failure