I'm not sure how much more streamlining they can do to a WiFi lamp that offers tunable white and RGB colour mixing options. It's basically a power supply, Wifi module and then a rather spectacular I2C serially controlled five channel linear regulator.
As with all products like this, running them at a lower power setting will result in much less heat and significantly longer operational life. The biggest factors in lifespan will be LED reliability and heat related aging of the electrolytic capacitors.
It's probably worth mentioning that the linear regulators used in these lighting products probably have other applications too. They are designed to operate over a wide voltage range, so should be suitable for low voltage projects as well as mains voltage use.
Although branded Eveready there was an Energizer sticker on the WiFi module. I'd guess this is a product from one of those companies that buys up dead brands for their status.
The Bright Power buck regulator is quite neat too. It's a very standard approach to providing a low voltage supply, and there seem to be different versions for different voltage ranges, with each chip having two voltage options that can then be cheated higher with a zener diode in the feedback path.
Not sure the purpose of the mystery capacitor. I'd guess it's a low value and intended to remove a bit of switching noise from the buck regulator.
Given the functionality of the light the circuitry is surprisingly uncluttered and minimalist. That's entirely down to the very modular approach.
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#ElectronicsCreators

It's an ever-ready Smart Wi-Fi controlled gu10 LED lamp. and you can tell it's very special because it came in a big box as opposed to this normal non-intelligent gu10 lamp. and this one came from Poundland in the UK and then predictably the box is quite a surprise amount of wearing it. Hold on.

Let's just look. Look, you can actually stuff another lamp in in the air section. That's just odd. It came from Poundland but didn't cost a pound unfortunately.

So yeah, lots and lots of packaging. That is ridiculous. It is just a little Gu10 lamp. Let's get the packaging out the way here.

Let's just for comparison. let's stick it into this box and see if it fits. Does it fit in every Tiny Box Yes, it does. They could have just put it in a box this size, but not to worry, they didn't.

So let's plug it in and see what happens when it's powered up by default without any Wi-Fi connectivity. I Shall grab a socket here, a suitable adapter and we'll stuff it in and just see if it lights up by default. When powered up, it gently dimmed up to Warm White Not bad actually. I Want to see the Power Ranger Now one moment.

What the? That is Very. That is very, very annoying. Oh, look at me, look at me. I'm wanting somebody to connect to me.

What an annoying feature. Not to worry. Uh, right. let's see what power it takes before it starts going to disco mode one moment please.

How much power does it take before agreeing to Super Disco mode? Uh, 4.9 Watts Okay, right. that took me by surprise. I wasn't expecting it to do that I Thought by default it would wait for something to happen before it started going into the I am the one that is selected mode. Anyway, if we pop the front half, it reveals well.

this thing does the uh what? The claims 60 million colors and Cold Light in one way I've already exported. agree. There's the let's Zoom down this there is the little antenna snaked in there for the Wi-Fi A very interesting chip because I've actually done a little bit of pre-exploration We've got uh, eight worldwide. date code: white LEDs and then we've got four RGB LEDs so they provide the Box ticking RGB But the main thing is for if you want super amounts light, it's going to be called White warm white or both if you want uh RGB It's just going to be for standard LEDs so it's just token gesture, just uh, shall we say atmospheric lighting.

Okay, right, you know what happens Now the circuit board comes out and we explore it one moment. please. and let's explore a quite interesting secretary. I Have to say a couple of interesting chips both by Bright Power This is not a surprise.

There is a mystery chip in this module here. The module is top down. inside. it's a little 3.3 volt regulator.

not sure what that is, but it's It doesn't really matter in this instance and what we really want to know is just its function. So the main Supply comes on Via 27 Ohm resistor for a fusible resistor and in Rush limiting. It's got a filter capacitor here 150 Nano It's got a little inductor here for filtering and then there's a bridge rectifier and then a smoothing capacitor 400 volt smoothing capacitor for that death beam experience, which provides roughly just over 300 volts in the UK or Europe to power, which actually it actually goes right out to one of the connectors because the circuit board on the front uh has a zero volt reel. It's got 330 volt, C and it's got 14 volts.
The 14 volts is for the LEDs uh, the RGB LEDs the higher voltages for the general illumination. LEDs And let's get this clever, clever chip in here. Notice there's just two links and a six pin connector of which five pins are used. This chip is very, very interesting.

I'll show you that in a moment. I'll show you the rest of the schematic and so we've got the main: Supply comes on for this capacitor here and goes out. We've also got this section here which is a 12 volt regulator 12 volt Buck regulator deriving it directly from the means, but they've cheated. They've put a diode in here just to boost that up by just a couple of volts.

2.4 volts I think it is and that gives just over 14 volts. in output. That's the red, green, blue LEDs Then it goes over to this little 3.3 volt module here. this one that's slotted through the circuit board and that provides a 3.3 Volts For the Wi-Fi module which is also just slotted through.

there's five connections 3.3 volt, zero volt, the antenna going out, and then clock and data because it's putting out I2c to the uh, the front module. Let me show you the schematic for this. it'd be more interest. There is a mystery capacitor here.

You can chime in in what you think this is for. I'm not sure why it's there, if it's filtering, stability, noise filtering. Really? not sure. Let's Zoom down in this.

So the incoming Supply comes in here. There's a 27 Ohm resistor. there's the filtering capacitor, and there's a little inductor with a 5.1 key resistor across it to quench resonance prison. But I'm not really sure why they do that.

We've got a redirect fire. We've got the Desk Beam capacitor. The reason I call it a death beam capacitor is because a conspiracist claimed that the reason that there are 400 volt capacitors in street light power supplies is to power the 5G death beams. They actually said that, but this uh, death Beam capacitor then has the output going with about say 330 volts in the UK and Europe it goes straight out to the LED circuit board.

It also goes to this little Bright Power Bp2522x chip and this is a program, but it's got a select pin that you can now take to its positive or its ground and it selects either 12 or 24 volts. In this case, it's 12 volts if selected, but they've nudged that with this inner diode and this is a very simple circuit. It's an inductor. It's got the capacitor here, and it charges the capacitor via the inductor from the means by just turning it on very briefly under the inductor because it's got that magnetic field that has to be built up.
It pushes back against that and limits the current flowing in to the capacitor. But then when this turns off and the magnetic field collapses as it collapses, the polarity changes and it also tops up the capacitor via this diode here, so it's a closed little lip. It's got the flywheel diode and it derives its own Supply from the Uh. Power supply is created and there's that extra 2.4 volts.

You know they've stuck in series of the standard diode that normally goes to that and that. uh, just nudges because this uses the supply voltage to also sends the voltage cross that capacitor and by adding that Xeno it's nudged out a bit. So they've got their 14 volts, which is needed because there are effectively four um, green and blue LEDs in series on that on the board, and it needs a slight allowance for the regulator to drop that 14.4 volt Supply also feeds that little 3.3 volt all-in-one module. I'm guessing that this must take a modest amount of current, then if they actually use a module like that instead of just a simple regulator, it has its own 220 Microfarad 10 volt capacitor that 14 Volt Supply is 100 microfarad 16 volt and that then Powers the 3.3 volts and Powers the Wi-Fi module and its interests and throat that it is.

The chip in it once removed the Energizer label off an ever-ready product. so that's two dead Brands Uh, why don't they just add duracellular Duracell sticker in there as well. so they can have all the Zombie brand battery brands at the same time. but I'm guessing it's the same company that owns this or they come from the same Factory Well, that will happen anyway.

but the chip underneath is a Bk7231n and yes, theoretically you could. If you had the knowledge, you could flash it with open source firmware for Wi-Fi control that didn't involve sending your email address and other stuff to this company. and yeah, I you'll notice I didn't demonstrate this running under I didn't connect it and load apps onto the phone I Just uh, I'm not into the Internet of of things I Just don't think it's very secure. It's a a novelty.

The 2.3 volt Supply also has two pull up resistors 5.1 K to data and clock from the Wi-Fi module. That's all it's going out at 3.30 uh antenna, data and clock. Just five connections. The data and clock is a I2c communication.

a very standard two marker communication system used on circuit boards for communicating between chips. Is that everything? That is everything? So now we go on to this board here with its Uh regulator chip. This is very clever. It's a Bp5758 by Bright Power and it is a five channel linear regulator so it takes.

It's got a Zero Volt which is a pad underneath that. So how it manages to fit it in. an eight pins attached nine pins. So the zero Volts is a pad underneath and it's got the five inputs.
It's got the Um data in the clock now. I Noticed that there's eight pins. not sure what the other pin does. I should look at the data sheet for hold on, give us a sound.

Where is the data sheet for this and also there is a high voltage input I Didn't know that it's got the high voltage input I wonder if it's going on the uh, it's getting its power from that. but I wonder it seems to be right. Tell you what? I Shall I Shall have to explore I Shall have to add a link to my schematic because it's missing. That is it coming from the 14 volts or is it coming from the high voltage? Uh, just give me a second here.

one moment. Please test done and resume. It's the 14 Volt Supply So tapping off the 14 Volt Supply and they're using that as the well, what's it called that it calls it HP It's not really high voltage it is designed for run LEDs off Supply voltages I Guess so I wonder if it could have gone up to 330 volt rail, but it doesn't really matter. It's going to take a lot of the string off if it can use that 14 Volt Supply There are five circuits of LEDs connected on this circuit board.

There are the Warm White and Cold White LEDs there are eight of each I've just drawn five here. It's worth mentioning that I did prove it's a bit scribbled here because I did probe and of those eight chips, seven are twelve chip so 36 volts and one just to bounce the voltage. I Think they could have gone all 36 volt chips but one of them uh, on each color wormhank code. white is a six pin chip for 18 volts.

So I worked out roughly 20070 volts. So there is a fair amount of dissipation uh, being generated from this chip in here because if you consider it 60 volt bolts to drop roughly and if it's running them at 20 milliamps, not sure what it is actually run them out. but yeah, that would be 1.2 Watts dissipated in this chip into the heatsink. I Guess it has thermoregulating most of the brake power Auto sensing chips do so.

There's the clock and data command and that basically there's no current sense resistor. All that is done by actually telling the chip via clocking data how much current each channel has to pass and it will program that internally and uh, then drive that so across for this 14 Volt Supply We've got one, two, three, four blue that roughly three volts each 12 volts. I'll be dropping two volts roughly to drop two volts roughly for the green, and probably about four Volts for the Uh red, but I calculate more like 60 for the worm white and cold white which seems excessive I Guess maybe they're just trying to increase the width of the voltage range, but that's it. It took a while to reverse engineer these things normally do.

it's quite complex, um, but the most interesting bit is that right per Bp5758 chip and it does look like you can reprogram these if you have the know-how There's not many connections on this. It really is designed to be programmed and then plugged in, so maybe it's pre-programmed but I'm sure there'll be programming pads available in this for PoGo pins so you can actually, um, do that yourself if you wish. although that does mean pretty much it's a bit destructive. The only way to get this out of the housing is to actually cut the pins off the end so it kind of wrecks it that way.
but some lamps are just more amenable to this than others. But there we have it: the Energizer Um. color changing LED lamp. Five channels of color red, green, blue, 8-bit control over red, green and blue for the full like they're eight million color bits.

What? What did they say that was? Was it eight million colors? I can't remember. where's the Box I've disposed the box? But anyway, the number of colors they quoted is it 60 million? What is basically 256. But hold on. I can calculate that.

Get the Kink calculator in 256 times 200. Oh, 256 times 256 times 256 equals 16 million colors. Yeah, that's the bit they're going for. They do include black as one of those colors, but there we go.

Quite interesting. It's amazing how it's all been crushed down. It's amazing just how simple this is. It's just a couple of power supplies uh, the Wi-Fi module, and then power and data going across to this marvelous little Bright Power chip that does all the rest for controlling the LEDs That's actually really quite impressive.

Very smart for the for the money, quite a lot of Technology involved and surprisingly simple in its modular approach.

13 thoughts on “Poundland eveready wifi lamp teardown – with very cool chip”
  1. Avataaar/Circle Created with python_avatars Colin Jones says:

    I'm always a little concerned that the heat from such a device would catch fire as I've seen people on another video drill holes in the bulb to allow the heat to escape.
    p.s. I am referring to a large household incandescent-styled LED.

  2. Avataaar/Circle Created with python_avatars SEABAY says:

    Theyโ€™re faking the โ€˜rayโ€™ because it was designed to prevent tampering. Donโ€™t matter.

  3. Avataaar/Circle Created with python_avatars thebatu89 says:

    Thanks for the detailed teardown and explanation. Iโ€™ve only installed custom firmware on these bulbs but i have limited knowledge if i need to fix them.
    So far Iโ€™ve only managed to repair the ones with obvious blownout capacitors, but other than that i wouldnโ€™t know what to look for.

  4. Avataaar/Circle Created with python_avatars David Evens says:

    I have never been able to understand the attraction of individually WiFi controlled lamps.

  5. Avataaar/Circle Created with python_avatars Udu Iabc says:

    It wants your phone contacts, your call logs and connects to a server in c…a?

  6. Avataaar/Circle Created with python_avatars Cr3ePiO says:

    Clive, did you see the new Philips Wiz lamps? They've got all sorts, most notably rgbw smart "100w" lamps, for like 20โ‚ฌ where i live.

  7. Avataaar/Circle Created with python_avatars Fabbrica Italiana Automobili Torino PandaQ says:

    Energizer belongs to everedy๐Ÿ˜Š read on the energizer packaging

  8. Avataaar/Circle Created with python_avatars MasterThief117 says:

    I have a "smart" LED wall light that's like 5000 lumen (it's a shop light) or something and it also blinks when it wants a wifi connection. Also, you can put it into wifi connect mode by turning it off and on 6 times. I also discovered that brownouts can also simulate this if the input voltage fluctuates 6 times.

    Whoever thought that rapidly blinking a 5000 lumen light at full power to indicate it needs to be paired was a good idea needs to be forced to sit in a room with bright blinking lights being beamed into their eyeballs for a month.

  9. Avataaar/Circle Created with python_avatars Robin Browne says:

    Big Sister Robot: OMG. Look out the back window. Is that a weirwolf prowling around out there. Look at those red glowing eyes. Yikes.

    Little Brother: No. It's Grandpa. I changed his eye-bulbs to these bluetooth ones. Look. I'll put them on disco mode.

    \|/
    &:-( #:-] 8o]
    /|\

  10. Avataaar/Circle Created with python_avatars Nes Nyt says:

    I think you should throw a birthday party for your pen, this appears to be video 100

  11. Avataaar/Circle Created with python_avatars DreamHazard says:

    As we all know, the S in IoT stands for "security"

  12. Avataaar/Circle Created with python_avatars keith king says:

    Thanks Clive ๐Ÿ‘๐Ÿ‡ฎ๐Ÿ‡ช๐Ÿ™๐Ÿป
    Forgot how enjoyable your videos are…๐Ÿ‘๐Ÿ‘๐Ÿ‘

  13. Avataaar/Circle Created with python_avatars John Gangemi says:

    "One Moment…WTF!"

    ๐Ÿ˜‚๐Ÿ˜‚๐Ÿ˜‚๐Ÿ˜‚๐Ÿ˜‚๐Ÿ˜‚

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