Selection of 20m application-controlled RGBW LED strip - differences in power supplies

Question

Hello everyone I'm looking for a RGBW LED strip for a room with a length of ~20 m. I would like it to be possible to change the color from the app + if it would be possible to connect it to the smart home from Google. I intend to connect the set in series. I found on aledrogo such: I have such...

Anonymous · Accepted Answer

The whole description of this second set does not hold water. It says that each diode of the world in the colours and in the white colour in the range (3000-6000K) ie from warm through neutral to cold. This is impossible with the RGB diode we can get at most a cold white, and more can be described as blue.

Power supply I caught only in the description at the top of the auction (I do not know if it allegro itself does not fill this). It is listed there as 48W which is an absurdly small power for such a length of tape.
The tape listed in the auction should have a power of 7.2w/m (this is how many such tapes have 150 RGB LEDs typical), which comes out 144W.
The power supply does not look like this power for sure.
Additionally, so that such a long section was able to work well it is not possible to plug in 20m of tape only at the beginning and run "in a tube". Maybe if the tape was on 24V, but it is still a long section.
The controller that works with TUYA can be paired with whatever you want , but I do not know how its endurance for such a long stretch of LED tape.
I'm leaving aside the question of price, because 20m of such tape with driver and power supply costs about 500zl. I'm talking about a good set.

In summary, this set does not inspire confidence, although you can always return it on allegro without losing money.

Anonymous · Accepted Answer

As for buy and return, I don't mean any kind of assembly, rather purchase, unroll the tape (we don't festoon LED tapes on rolls for a long time because they heat up) plug the whole set in for two hours and check how it works and how it lights up. If you have an electronic meter, the easiest way is to measure what are the drops in the middle of the length of the tape when connecting such a set of 20m to the controller with both ends.
The size of the drops depends on several things: the quality of the tape (amount of copper in the tracks), the length of the tape, the power of the tape and the voltage.
With an RGB tape of 150 diodes/5m operating at 24v, even a 12-13m section powered from one side will function correctly, but this does not apply to the tape from the auction (not this budget).
Here, you would have to lead out an additional power supply from the controller and power the whole thing every 5m, i.e. in 4 places for it to function properly.

With regard to the controller, despite the small gabarts they can have a load capacity of 12A and be able to withstand such a tape because it will not do such a load due to its quality.

The biggest unknown is the power supply because they are not likely to be found in the socket version with powers as high as 144W. But maybe it is a power supply of about 60w and this tape is so poor that the power supply can cope with it.

cysiek114 · Answer

Thanks for the answerI caught the power of the power supply only in the description at the top of the auction (I do not know if this allegro itself does not fill this). It is given there 48W which is a power of absurdly small for such a length of the tape.The tapes given in the auction should have a power of 7.2w / m (this is how many such tapes have 150 RGB LEDs typical) so it comes out 144W.-No, it also seems to me something seems too small on simple peasant reasoning Set from the first link has a power supply with just 144W. Additionally, in order for such a long section to be able to work well it is not possible to plug in 20m of tape only at the beginning and run it in bursts- Well I wanted to run the LED strip around the ceiling and on two sides (the beginning of the tape and its end) connect to the power supply. I have read that with a length of more than 5 m there are dips and the tape illuminates unevenly and you need to either connect the cables every 5 m or do it in series, so as it is written - the beginning and end of the LED strip and to the driverThe controller working with TUYA can be paired with what you want, but I do not know how its durability for such a long stretch of LED tape. - Are you saying that the longer the LED strip the worse for such a driver? I have one of these just from TUYA and cool thing in general only they just do not have a power supply , but there I have maybe only 3m tapeI'm leaving aside the question of price because 20m of such tape with driver and power supply costs about 500zl. I'm talking about a good set. In summary, this set does not inspire confidence, although you can always return on allegro without losing money - Thanks for your opinion! I will take it into consideration. What about returns from Allegro is true, but I prefer to ask around on the electrode than buy blind. I also do not want to glue the LED tape and then take it off after a month because something will be wrong. So, for a 20 M LED strip to work properly, you need a power supply of at least 144W, yes?

cysiek114 · Answer

Thanks!
And do you know how the selection of power supply for the LED strip RGB+CCT compared to a regular RGBW?

Because maybe I do not understand something, but RGB + CCT and RGB +W is the same.??
Because there are more LEDs, the power supply must also be more powerful

Anonymous · Answer

Fellow LED strips have different parameters in terms of power requirements,
150 RGB 7.2W/m
300 RGB 14.4W/m

150 RGB+W - 15W/m
300 Rgb+W -19.2W/m
300 RGB+ CCT -20W/m

The above parameters are the most common values. But different manufacturers can use different wattages per 1m.

For RGB+W / RGB+CCT tapes you can find two types of tape, one is such that the white colour is at each RGB diode, and the other type of tape is such that the white diode is on the tape alternating with the RGB diode.

With this application the power of the tapes is different and you have to check on the package what power a particular tape has.

The difference between RGB+w tape and RGB+cct tape is that in the first tape we have one defined white colour (warm 3000K, neutral 4000K, cold 6000K).

In the RGB+cct tape two white diodes are used (warm and cold ) and by shining these diodes we can get the full range of white colour (3000-6000K)

Mostly it is done this way, that we choose a tape, knowing the power we multiply by the number of meters and we have the necessary power of the power supply (we add a power reserve of 10%), knowing the power we can also select the RGB controller and we have a set.

This is all the above is a bit simplified.

You can also use ready-made kits such as on the auction and you do not need to know much about anything. Such a thing should at least in theory work properly.

cysiek114 · Answer

I bought a ready-made kit from allegro Thank you for all your helpful advice Greetings

[Solved] Selection of 20m application-controlled RGBW LED strip - differences in power supplies

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