BTF-LIGHTING WS2812E ECO RGB Alloy Wires 5050SMD Individual Addressable 3.3FT 144(2X72) Pixels/m Flexible Black PCB Full Color Pixel Strip Dream Color IP30 Non-Waterproof DIY Only DC5V(Only Strip)

Product: "Black PCB IP67"Very nice product. The following may be issues of concern for some purposes:1. Brightness levels are not adjusted for the human eye so although the brightness is fully adjustable in 256 steps, these are basically bright right down to the lowest values. Difficult to produce a nicely graduated fade-out.2. As stated this strip is made up of two half length strips joined in the middle. The consequences are not mentioned:2.1 The joint appears to be a simple solder link, more rigid and fragile than the rest of the strip.2.2 The joint is about twice as wide as the other gaps between LEDs, causing a visual discontinuity between the two halves.In fairness there is another side to issue 1: These LEDs are brighter than other neopixel-like strips I have tried. So while my displays aren't graduated so well on this, they are way brighter.On balance, full marks.

I've bought a couple of sets of these 100 leds/m pixel strips now, combined with BTF's SP105E Bluetooth controller and a 5v 10A power supply from another manufacturer. I've been really impressed with the quality of the led strip and BTF's customer service. While the controller software is quite basic, it does all I need and seems reliable. It picks up the Bluetooth controller and connects quickly every time, and allows control of all the basic functionality very easily. Only thing I wish it would do is save favourite modes, but you could always go old school and write them down! Also wish you could rename the controller Bluetooth name, as I may get a few more for other rooms in the future.In terms of the lights themselves, I can't really fault them. Really nice colours, very bright and super quick to change state. Also as there are so many leds/m, you get very little spotting effect if using to edge light a glass shelf (which is what I'm doing). Even better if you put them behind a diffuser in some sort of profile.Only slight gripe is there's not that many different brightness settings, but I'm not sure if that's a function of the leds or the controller - I suspect the latter again. A nice percentage slider would be welcome rather than steps. Same with the scroll speed of the modes too, not that many different speeds available, when I suspect in reality a much greater range is possible.Overall very happy with the led strips and BTF!

The headline is a reference to a 1977 movie, but refers to the fact that one of the LED chips (WS2812B) went up in smoke when we fired up the strip.Since WS2812B chips are designed to pass data along a chain, if one of the chips blows (as did here, quite aromatically in a poof of smoke) that data can no longer be passed down the chain rendering it useless.I was able to bridge the faulty chip by directly removing the faulted component and soldering the data out to the data in of the next chip (the electronic band-aid). Fortunately that's fairly easy if you have decent soldering skills, but it does suggest that these strips are not tested at the factory and any of us could be faced with a partly dead strip and potentially no way to know what to do.

This is a fantastic product but should really be reserved for experts and specialists. Each LED can take upto 80mA when all segments/colours are on! That is almost 1/10 of an Amp. Therefore about 1 Amp for just 10 or 12 LEDS.There are 144 LEDs in this strip, That is nearly 12A for this reasonably short strip. So seriously consider what use you will be putting these to. As I say... Fantastic product but not really suitable for people who simply want mood lighting around a room or back lighting for a TV.

SCAM -- be warned, these are not WS2812B the item delivered was WS2812E , these are the economy version , low powered, poor quality versions and should be sold as such, they are not as bright, have worse heat disapation lesser quality connections. Probably fine if you know your buying the E versions and getting them cheaper. disappointed with Amazon for not caring they are selling incorrect items just send it back and try another seller they said. I wonder how many people have had these and not realised they were getting the cheap ones! Avoid.

I thought these were great and used with my 5V 1A external supply fine.I did the maths and like others on there thought you would need a 5V 10A supply to power 2 of them at some brightness. I bought this from Adafruit and put a 1000uF capacitor in parallel, close to the strip. It seems to have fried the chip (only the very first pixel switches on at all, very dim. I have retested with the old power supply... Any ideas? Very frustrating if the supply required to work on close to full brightness destroys them...

Works well with adafruit feather boards, for half the price. The only real issue is soldering wires to the copper pads is tricky at times and the tracks get damaged easily when bending the wires.

It's a great product! Recommend it!Yes, it is very bright, and the LEDs are of good quality! I give them that much credit!But the price is a little high, though...Just a heads up: Do not stick it in a sharp angle, the silicone will break. Not immediately, but it will.