Controlling RGB Leds

Grumpy_Mike:
I know this might come as a shock to some in the USA but other places exist.

However you can get all the types in the USA.

Overview | RGB LED Strips | Adafruit Learning System
Note how the pictures show the same colour on all the LEDs on the reel.

Adafruit NeoPixel Digital RGB LED Strip - White 60 LED [WHITE] : ID 1138 : $99.80 : Adafruit Industries, Unique & fun DIY electronics and kits
Note how their are different colours on the same reel.

Overview | Adafruit DotStar LEDs | Adafruit Learning System
Note how their are four connectors, power, data and clock.

http://led-tronix.com/product/addressable-lpd6803-30leds-5050-led-pixel-strip-lights-12v-dc-waterproof-ip67/
Note how it says "one pixel IC control three 5050 RGB"

I know fully well other places aka countries do exist.
I was not born in the USA. But since I reside here now, I don't go buying things from eBay in the Netherlands.

Other than the Dotstar which I don't know about because Adafruit products are expensive and I don't buy from their website, it looks like the products are deprecated.

I remember reading a website a few years back, and the one mentioned at the time were those
WS2812B.

septillion:
Yes sir I am.
Does not matter, all links are from international sellers in China. And they are the first I could find anyway so bad idea to blindly onder from those links
Yes there is, it's the fact they don't mention a controller because they have none :wink: That's what makes them just pure RGB leds :slight_smile:
What can I say? China... If all subjects / descriptions would be perfect in the far east I would not spend hours looking for stuff sometimes.

My point is that it is not readily apparent to the casual buyer that there are 4(!) types of RGB LED strips as you and Grumpy_Mike claim.

Links to different webpages.

All confusing and not very clear that they are actually different - it may be that the Chinese sellers are not right with descriptions.

I still stand by my comments that when people are posting here about RGB LEDs, they are referring to the non-Adafruit variety and are ones with the included controller and that run on 5V different colors at the same.
Those are the ones I see most commonly on eBay.com

The analog stuff is deprecated. One color at a time. Ugh.

You guys could do people a favor if you actually created one page that describes these different LED strips.

Photos and descriptions.

ieee488:
I don't go buying things from eBay in the Netherlands.

Like I said, nothing in the Netherlands. It's just the Dutch eBay. Replace the .nl with .com and it will be nicely in English. All sellers are in China (as usual).

ieee488:
it looks like the products are deprecated.

Explain yourself? The pure RGB strips are still commonly used. If you just want to light large areas you don't need individual control over each pixel. Like I said, still the most sold strip. And if you change your expectation that a RGB led comes with a controller/driver listings are not weird. You don't expect a normal 3mm led to come with a driver, do you?

ieee488:
You guys could do people a favor if you actually created one page that describes these different LED strips.

The FastLed website already shows a lot of different types of individual controllers. And like I said, most of use don't expect any controller in a strip so it's just multiple leds on a strip with resistors which you drive like any other led :slight_smile:

ieee488:
My point is that it is not readily apparent to the casual buyer that there are 4(!) types of RGB LED strips as you and Grumpy_Mike claim show ;).

Maybe even more. It just started with the plain strips and manufacturers just thought of nice control chips and even integrated them into the led package itself. And like every industry, every manufacturer tries to get a share of the pie with there own implementation which is or is not compatible with others.

ieee488:
All confusing and not very clear that they are actually different - it may be that the Chinese sellers are not right with descriptions.

Most mention the controller just fine or at least the "general" brand name which they are compatible with. And the once without yeah, like I said, you don't expect a seller to tell you when you buy a regular LED it has no controller?

ieee488:
I still stand by my comments that when people are posting here about RGB LEDs, they are referring to the non-Adafruit variety and are ones with the included controller and that run on 5V different colors at the same.

A lot of people indeed do but that's what makes it confusing. A real engineer would not and will ask just to be sure around here :wink:

ieee488:
Those are the ones I see most commonly on eBay.com

maybe in the US, in China the controller-less variants are still the most popular :slight_smile:

ieee488:
The analog stuff is deprecated. One color at a time. Ugh.

Not everybody likes a rainbow on there ceiling :wink: And your free to make sections again. It's still a heck of a lot cheaper and easier to make sections of 1m with a individual controller if you want a long run and it will also look nice. Yes, individual pixels is nice but I don't think it's worth a tenfold to just light my room.