Look Mum No Wires - This will blow your mind

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We're handling some wireless LEDs - pretty amazing stuff. Again we're sponsored by www.PCBWay.com/?from=atomic
I saw these LEDs on the Tested channel originally (ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-QL7bwm_FqlA.html) and decided that I had to have some.
You can buy them here from Aliexpress (affiliate link): s.click.aliexpress.com/e/_A4gUEH
If you want to make your own LEDs then a 2.2mH inductor and 220pF capacitor seem to work well - you can see how to do it here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-jdc_0r5pJPc.html
The mystery chip has been identified - it's a XKT-001 and it's actually controlling XKT-333.
आदित्य Aditya मेहेंदळे Mehendale points out:
The XKT333 looks suspiciously like a MOSFET. I suspect that the 6/7 pin chip is/are the "brains" and the XKT333's gate (pin 8) is driven by pin2 of this other chip with a square-wave. The duty cycle of the square wave is likely 44% - hence "2.2VDC" (average) on this pin.
---
If you'd like to help support the channel then I have a Patreon page: www.patreon.com/atomic14
And if you're shopping on AliExpress or Amazon then if you click on these links I will get a little bit of affiliate money:
Aliexpress - s.click.aliexpress.com/e/_Ac05mF
Amazon - www.amazon.com/?tag=atomic14-20
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10 ноя 2021

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Комментарии : 2,2 тыс.

@atomic14 Год назад

If you'd like to help support the channel then I have a Patreon page: www.patreon.com/atomic14 And if you're shopping on AliExpress or Amazon then if you click on these links I will get a little bit of affiliate money: Aliexpress - s.click.aliexpress.com/e/_Ac05mF Amazon - www.amazon.com/?tag=atomic14-20 You can also join us on Discord here: discord.gg/h2DDnDdjD2 And we've got an exciting new newsletter! makernews.substack.com/

@maxtroy 2 года назад

I have an idea for these. Put coil in chessboard. LED light inside frosted glass / resin chess pieces. Would be a cool effect to see the pieces turn off as they're eliminated and removed from the chess board.

@soosplays2306 2 года назад

bruhhh

@FjorimDerHuene 2 года назад

Yeah, and you have to put the pieces on the board to determine if they're the whites or blacks (in this case, blues or reds) ;-D

@maxtroy 2 года назад

@@FjorimDerHuene that is the icing on the cake. I’m building one.

@BlurpeeBaggins 2 года назад

I would fricking buy this! Genius!

@LiamCottle 2 года назад

Found this one! ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Fo0k4rvpctY.html&ab_channel=MichaelMaupin

@psychodad1961 2 года назад

Get some plastic reusable ice cubes and put them inside and reseal the cubes. Put the coil under a drink coaster. When you set your glass on the coaster, the ice cubes light up.

@mgratk 2 года назад

This is genius.

@gus473 2 года назад

Each guest can have a different color or mix, so they know whose drink is whose..... 🤔

@cooleo1979 2 года назад

A project idea I have will need a lot more LEDs. Spread them out in a grid in the ground outside (porch / garden etc). Move around with the wireless coil and see them lightup with your route. Can be used in RC car racing tracks aswell, where the rc cars carry a small wirless coil, lighning up the track wherever they go.

@April-xq4ll 2 года назад

I love the RC track idea.

@horrorhotel1999 2 года назад

This is how you get TRON! Do you want to get TRON?

@kotresh Год назад

@@horrorhotel1999 tron means?

@uweroddinger393 Год назад

@@kotresh How old are you? It's a movie from 1982! 🤣

@kotresh Год назад

@@uweroddinger393 20

@nazxuul 2 года назад

Would be great for modelling - put the coil in the bas of a building and the put lights where you need without having to run tiny wires. Or use a base and separate vehicle lights.

@Dawgsofwinter 2 года назад

I was thinking scale RC Ships myself. For things like mast and exterior lighting things that it's a bit harder to hide the wiring for or if burns out is obnoxious to replace and too much weight up high can be a problem.

@timczifrik7715 2 года назад

i was just thinking that. Headlights or for Emergency vehicles.

@JETJOOBOY 2 года назад

Headlamps and Rear lights in Model Car builds,

@karlcarrigan4451 2 года назад

I'm just about to build 1:600 scale model of Star Trek Original Series Enterprise.. You can buy a lighting kit for it, but it's messy and expensive. These would do the lighting job perfectly for running lights and window lighting me thinks as the coil could live in the saucer section where most of the effects are needed..

@Kittsuera 2 года назад

@@JETJOOBOY head lamp in a lego hard hat.

@bigclivedotcom 2 года назад

The XKT-333 has the pinout of a common MOSFET, but possibly optimised for this application. The 6-pin chip appears to be generating a fixed frequency output based on the resistors, as there appears to be no feedback.

@bigclivedotcom 2 года назад

I'll guess the 6-pin chip is a VCO (Voltage Controlled Oscillator).

@atomic14 2 года назад

@@bigclivedotcom That's it - a pretty simple circuit really, MOSFET driven by an oscillator with an LC circuit - I've redone the reverse engineering here ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-jdc_0r5pJPc.html - but would be great to see a Big Clive video doing it properly :)

@atomic14 2 года назад

Also - OMG - Big Clive has commented on one of my videos!

@KronicDaydreamZ 2 года назад

@@atomic14 that's all you get for Christmas.

@longriderxx 2 года назад

Yea Big Clive

@TheRealWulfderay 2 года назад

This would work well as a puzzle prop for one of those escape rooms.... If you placed an led in a translucent 3d printed gem, you could embed the coil into a chalice or something so that when the gem is placed in it, it will light up. You could even monitor the current of the coil circuit to trigger some door latch or something once you've placed enough gems in the chalice. Since the leds don't draw that much current, you might need a few before you could reliably detect it, but that could be part of the puzzle!

@pawelrelidzynski680 2 года назад

Probably it would be easier with a magnetic switch and a small battery tho, so nothing needs to be connected to power.

@kellyfrench 2 года назад

Use clear resin to make the “gemstones”, then you can cut and sand to the desired shape or size.

@Treviath 2 года назад

Furhermore, you could have several gems with only a few of them having "magical properties". You'd use some "magic harmonizer" to light up the gems that will allow you to progress.

@janthran 8 месяцев назад

put a blacklight LED so that when you place it on the correct spot, it reveals hidden text. what, me? noooo i've totally not been learning electrical engineering just to design escape rooms..

@CHITUS 2 года назад

In Japan, back in 1996 there were this antena cap with LED at the top, kids love it at the time. When they receive a call the led start to flash or blink.

@animereverie4380 2 года назад

These would be great for adding LEDs to model kits if you make a base stand with a coil in it.

@jackablon7252 2 года назад

Endless applications in modeling and dioramas! Makes it easier for us un-electric types to light stuff up without solder, circuits, etc.!

@treenacorder7012 2 года назад

I was thinking the same thing. The flashing lights would look great on a model cop car.

@gregkramer5588 2 года назад

The inductors have very low range. Think about the charger for your toothbrush or cellphone.

@HappyQuailsLC 2 года назад

You are holding it beside a metal ruler. Maybe compare it against a wooden one to find out the true range from power source.

@Tony-iu7sw 2 года назад

If I was seizure receptive I'd have been convulsing 🤣 the warning label was there, but I was too engaged listening to the dialogue that I took too long to read the message on the screen. Then the lights began to flash 👀😂

@whitehorse1959 2 года назад

This brightened my day, thank you.

@MikkelFog 2 года назад

Fun stuff... Build a "snowglobe" with wireless LED floating in small "bubbles" inside the large water sphere.

@limwenxi3399 2 года назад

Nice! I was thinking of a "firefly-globe" haha

@panofish 2 года назад

genius idea... I think you need to find the right liquid that will provide neutral buoyancy. Also if the liquid is conductive.. you may need to dip each led into a clear epoxy coating to avoid shorting out. Then a slow circulating pump to provide agitation to the liquid. I would also suggest a larger sized globe to keep proportions looking nice.

@travismiller5548 2 года назад

@@panofish I've expermented with it, but I found neutral buoyancy very hard to achieve. still, I'm totally popping a few of these into a bong.

@user-hv2nm2lm4i 2 года назад

Embed them in a block of clear resin, so that people can see them floating around in there without any wires. Then you can just hide the wireless "charger" under a table or something.

@user-hv2nm2lm4i 2 года назад

@@simonwilson7581 The fact that they are wireless is emphasized because they are floating around in a block of resin. Having them laying in a corner somewhere people would probably not think too much about it, as they might just assume they have some tiny wires or batteries connected. With resin people can clearly see that none of them are connected and that you can't grab the LED's to change a micro battery.

@danthelambboy 2 года назад

Mood lighting for dinner. In the bottom of drinks glasses they can glow when placed in the right place

@user-hv2nm2lm4i 2 года назад

@@danthelambboy great idea!

@dangerous8333 2 года назад

My first thought. Will be doing this 👍

@elizabethraworth64 2 года назад

Squeal !!! These little darling will solve a tricky problem with lighting my very very large miniature dollhouse. Thank you so much.

@mayankm2836 2 года назад

discovered your channel today on this video. Subscribed great job kept up!

@ashleysmith3106 2 года назад

Project - illuminated wireless led chessmen, with charging loop in chess board

@anshul9451 2 года назад

make a lava lamp . where the lava are the LED's , make the led's water proof. and place the led in water and put a water pump inside so that the leds float in water from bottom to top or vise versa. place the electric coil at the bottom . this would be a beautiful project :)

@linuxguy1199 2 года назад

3:37 That's exactly what it should be, in reality the chip is pulsing Vcc into the coil when filtered by the LC circuit the higher order harmonics of the square wave are destroyed and an ugly, ringy, half-cycle sine wave remains. You're pretty much spot on with your reverse engineering!

@atomic14 2 года назад

Thanks!

@Kmn483 2 года назад

Fursuit makers are gonna have a field day with this one.

@JuryDutySummons 2 года назад

As far as projects go, I really want to cast these into dice and then cast the wireless loop into a dice rolling tray. This way, when you roll the dice they glow! (bonus points if the LED shines out the high-side).

@jurgmanx4644 2 года назад

Something like these smart dice? ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-UxT8COXu6zE.html

@joshmutch5249 2 года назад

i love this idea.

@meawreg 2 года назад

@@jurgmanx4644 dude I just looked that shit up and it's amazing, thanks for sharing!

@jurgmanx4644 2 года назад

@@meawreg and its all open sause so ya can improve and tweak. Its on my to do list, after minis. I should order a flexible pcb soon tho.

@meawreg 2 года назад

@@jurgmanx4644 you are amazing! Keep up the good work!

@spankmygimp 2 года назад

a key mod that lights up when near a dark keyhole to help locate the hole in the dark

@jerryb.9754 2 года назад

I made something with this concept for my elderly mother in 1993 but it was too bulky. I used a small AAA, I didn't think of watch battery, alas.

@illx2367 2 года назад

Imagine what our world is going to look like in the next 5 years just with this alone. Super clean set ups!

@WilliamAshleyOnline 2 года назад

is the wav that way because it is pulse modulated? and there is some load consumption from the induction on the LED itself?

@davidrathbone6978 2 года назад

Would make much better Christmas tree lights as the coil could be in a stem and the leds just prinkle onto the tree. no more wire mess when putting the tree up.

@MrDSchroer 2 года назад

“No more wire mess when putting the tree up” Sadly, with the distance those can be from the coil before dimming greatly, you would have potentially more of a wire mess due to the coils themselves and then the wires to power that unless you make/find a circuit and use battery power that you can hide away easier. If not, you’ll have much more wiring to deal with. It’s a great idea and good job buddy for the video. It was fantastic. I appreciate it!

@MrJordanwain 2 года назад

Coil tinsel?? 😃🎄

@CableWrestler 2 года назад

You can buy trees that have fibre optics in the branches. You e been able to buy them for nearly 20 years

@dickerdrachen 2 года назад

I have a bedside table with an integrated QI charging pad. With these LEDs I could put a small Christmas tree there :)

@mrono1910 2 года назад

This is a very inefficient way of transmitting power tho You loose like 90% of the power you consume on having them wireless

@happilyham6769 2 года назад

Wear the coil as bracelet and glue the leds to your fingernails/fingertips?

@epirreman 2 года назад

just wondering... what range could you get if you made the coil a 6 axis winding and wanted it to look like a firework display

@seal2866 2 года назад

Hi. I love the video. On the other side of the red and black wires , what does it connect to? a 9 volt battery?

@peterduxbury927 2 года назад

I always thought that LED Pool Lighting (Underwater) should use an Inductive Coil. In this way, the Lighting Module could be completely sealed in Resin, with absolutely no wiring, and no chance of water ingress to destroy the LED Light Unit. I have already had to replace one expensive LED Underwater Light - due to water ingress.

@JohnHansknecht 2 года назад

I did this with my pool. Using high brightness blue COB LED's and an inductive heater driver on the dirt side of the pool. I embedded magnets where the LED would stick to the inside of the pool. Works quite well.

@constantinosschinas4503 2 года назад

that is a proper and logical use.

@rogermccaslin5963 2 года назад

@@cap5856 I'd guess being submerged in 10,000 gallons of water would mitigate the heat of the coils a bit.

@rogermccaslin5963 2 года назад

@@cap5856 I was thinking it would be like a puck on the wall of the pool based on what John H wrote.

@paulhill4843 2 года назад

Out of interest who did you buy these underwater lights from?

@magmajctaz1405 2 года назад

I have an old blower wheel from an air conditioner. I have considered mounting it on bearings on a pole in my backyard as a form of yard art. I have considered mounting LEDs to it as well so the spinning motion makes them blink. It would be interesting to see if they would blink as a magnet is moved past them.

@KillaBitz 2 года назад

if not you could put a bigger coil by the magnet and drive the original circuit

@davelowets 2 года назад

They may blink. Depends on the tuning of the coil, and the frequency of the magnet going by

@sn1000k 2 года назад

Sounds like a cool variation on a Dream Machine ala Brion Gysin

@Hellsong89 2 года назад

As mentioned on other comments cast them inside of resin. One cool idea comes to mind, of making set of dice that light up when you throw them on the dice container, though this would need to be worked with some dice manufacturer to get balance just right to it to work.

@thehometipsshow 2 года назад

Do you think the stainless steel ruler impacts the range on the induced voltage to light the LED? Very cool stuff. Thanks for sharing.

@rodionsabbath9722 2 года назад

that steel ruler is probably affecting the range.

@MrRiory 2 года назад

Lava lamp with LEDS...

@andrewbarney5503 2 года назад

Genius!

@6yjjk 2 года назад

I'm thinking there has to be a way to drive that with the heat from a CPU, in a sick gaming rig.

@pigpong3032 4 месяца назад

Hi sir, if we want to extend the range by using the same hardware what could be done? Or with some hardware modifications?

@MrStrikecentral 2 года назад

Now that's awesome! These are pretty cool!

@rayoflight62 2 года назад

Thank you for the hint. The Qi standard negotiate the power with the phone, i.e. 5, 10, or 15 Watt. Also, it detect the presence of metallic objects that can short the electromagnetic field. The wireless LEDs are a barebone circuit, they don't reply to the inquiries of the charger, which therefore turns off. You can build a simpler, crude driver for the coil you use to power the LED, with a 555 wired as an astable multivibrator, and a power transistor driving the coil. Try to use the Qi base frequency of 140 KHz, which is the best compromise for minimising coil losses. Thank you for showing this. Note that the coil you have built to drive the wireless LEDs, is a crude LW low power transmitter, which can disable long wave radio reception within the house.

@jasonmoore4429 2 года назад

could you increase the field potentecy by putting it in a microwave? could you cut a hole in the wire mesh on the microwave door and make it a directed microwave beam and power those things or other things at a distance?

@vloppysagina 2 года назад

Question, how did you learn about this type of stuff? Aside from going to college for it, do you recommend any resources that I can purchase/watch/check out to gain further knowledge about LEDs and the other things you spoke of, understanding the whole process of what you're explaining, and getting a grasp on electronics like this? I've always been very interested from an outside perspective, but have never known how or where to dive in - I really appreciate any recommendation you have!

@davelowets 2 года назад

You can even go easier than that. A simple "Joule Thief" circuit is able to power a coil, and get some distance powering an LED with your own hand wound coil attached to the LED leads. Ive done it before using a single AA battery, and it works a charm. You could build your own "joule thief" circuit, OR harvest one out of a 1 dollar solar garden light, remove the LED, and attach a coil to where the LED used to be. I've done it both ways, and it works.

@angrybeard1645 2 года назад

Over 25 years ago I had a Nokia (6210 I think??) you could change the stumpy antenna for an after market one with a multi LED set up that would flash when you was about to receive a call or text or make a call. I was always amazed that they would work with no external connections.

@crazyRyoga 2 года назад

Hi, di you think is it possible to make a coil in a different measure? The one you have it's 65mm diameter and then they sell a 200mm one. I need one of about 100mm, so I was wondering, is it better to order the one you got (5V) or the bigger one that uses 24V?

@zimmerlicker 2 года назад

good video man, i wonder if the metal ruler was helping extend the coils induction field?

@erik61801 2 года назад

i would mount a coil in my door near the lock, then epoxy a few leds in a key fob, so you have a simple flashlight to see the lock at night.

@atomic14 2 года назад

That's a great idea!

@louf7178 2 года назад

You'll kill your battery

@felixhirt9284 2 года назад

You gave the answer why the coil signal looks like this yourself at 4:30: The coil is connected between +5V and a powerswitch. The Powerswitch switches that connection of the coil to GND. now, if you connect an oscilloscope probe across the coil inputs, you get a nice sine when the switch is open, and a nice constant 5V when its closed.

@pravinpalve3771 2 года назад

this can be used as visual warning signals for presence of altering electromagnetic field?

@ronstoppable1133 2 года назад

can these LEDs still function incased in clear resin? or would that insulate them from the power source? they could be used in creating glowing props

@piconano 2 года назад

Excellent. I made one 20 years ago when messing with Tesla patents. If you have hundreds, put them in a glass vase from Dollar store and build a base with the transmitter coil inside the base, to hold the vase on top. Like capturing hundreds of non-flashing fireflies!

@atomic14 2 года назад

That's sounds like a great idea - I'm going to try making some myself - have a bunch of inductors to try out.

@piconano 2 года назад

@@atomic14 👍

@joshuascholar3220 2 года назад

You could make a vase with up to three coils on right angle axes, going on and off at different rates. The LEDs will blink differently at different orientations.

@timmylassie6763 2 года назад

why did you use a metal (stainless steel) ruler to measure the distance? that would affect the fields...

@jackdshellback3819 2 года назад

I wonder if these would work underneath an electricity pylon just as strip lights do?

@ibrahimkocaalioglu Год назад

Did you try to change the coil? Is it possible to use a larger diameter coil with same inductance and resistance?

@shanieboi86 2 года назад

So time to create a mineral oil floating led lava lamp.

@netzkantine 2 года назад

Same idea here. :-)

@ralcool5932 2 года назад

Thumbs up for the BigClive reference.

@ricfermi5886 2 года назад

Love this video 😍

@AvatarPrimus 2 года назад

A Christmas tree with wireless lights would be great!

@atomic14 2 года назад

DIY version is done! ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-jdc_0r5pJPc.html - total cost is around $8-$10 if you want to build it yourself. Lot's of people have commented on the steel ruler - I've tested with both plastic and wooden rulers and it seems to have no obvious effect on the range.

@ShahZahid 2 года назад

@Niculae George first of all it would be horribly inefficient, second u would have to position all of the leds correctly i.e the inductor towards the base of the tree, lastly the transmitter would have to be a higher power one something with the power output of a tesla coil, which can cause EM interference

@ThinkingBetter 2 года назад

I wouldn't use a steel ruler to measure in a magnetic field. I guess you would get a different range without having that metal in the field?

@kimchristensen2175 2 года назад

well, it is a STAINLESS steel ruler which, depending on the grade/type of stainless steel, is not very magnetic.

@ThinkingBetter 2 года назад

@@kimchristensen2175 It's conductive and that means it works as an antenna possibly capturing some electromagnetic energy.

@kimchristensen2175 2 года назад

@@ThinkingBetter A 12' ruler is too short to be much of an antenna at 220Khz. It would have very little effect as has been verified by atomic14's tests. Being non-ferrous it also has very little interaction with the magnetic field as far as eddy currents are concerned so it would absorb very little of the energy emitted. Don't get me wrong. I'm not saying it has NO effect, but rather very little.

@Roobotics 2 года назад

The RX coils output sine waveform, looks flat on one side, because the flat area is where it's sinking current into the LED and the LED is forward conducting. So technically 'yes' the waveform is upside down, but only from the perspective of driving the LED with a possitive voltage, else it's the same as driving a reversed LED with a negative voltage. Also you are correct that the phone chargers don't output all the time and do handshake and ping pulses(as well as tell the TX coil how hard to drive itself so the RX coil sees a reasonable voltage), another thing they do is FOD(foreign object detection) to make sure they aren't sinking their power into something conductive nearby other than the phone.

@harshityashwardhan 2 года назад

The simple answer ... Cause led as being a diode adn with a cap . Its just showing the positive cycle of sine wave

@dvig3261 2 года назад

I remember a circuit designed to alert you to someone touching a door knob. (Intended to be used at a hotel, for example) It used two tuned circuits which were thrown into imbalance when a hand touched the doorknob...these LEDs can be made to be held between the balanced circuits, thus in the unlit state. When a hand touches the doorknob, the imbalance created would allow the led to light.

@drawmaster77 2 года назад

can you drive something else with? Like power an andruino controller or would that mess up the electronics? How much power does it transmit?

@AdrianMagni 2 года назад

Put them in a container of clear oil or other non-conductive fluid, then use a pump or agitator to swirl them around like a lava lamp.

@AdrianMagni 2 года назад

Or I guess you could cover them in epoxy then use water in the container.

@AdrianMagni 2 года назад

Actually don't do that because I want to do it now!

@AdrianMagni 2 года назад

I got some of these, I didn't realise how dense they are! I was able to get one to float by sticking a big piece of styrofoam to it, but I'm not sure how many you could have in a jar and still be able to see the lights.

@jonmayer 2 года назад

Those would be cool in a board game with glowing pieces or playfield.

@albertshilton5336 2 года назад

Great video. I ordered some of these a month ago. Can the pcb drive more than one coil? Say three or four? Can coils be overlapped or will the magnetic field be disrupted? Do you do freelance consulting?

@brei2670 2 года назад

I bet a magician could come up with some cool stuff to do with these.

@vicentecamilo5636 2 года назад

I already know what I'm going to use on my Christmas tree.

@DragongeekAndCo 2 года назад

Project idea: Make a small piece of art--maybe a 3d printed geometric shape or something, and then put the LEDs inside. After, cast the whole thing in clear/colored resin/epoxy, and then you have a cool desk ornament that glows from within when placed in the right spot.

@solenoidnull9542 2 года назад

Put a bunch of blue ones into a little sword and the coil into a Orc halloween costume, then you got a real life working Sting from lord of the rings

@fritszieboy7805 2 года назад

I have a question is it possible that the measure instrument conduct the energie to the wireless led? Bc that would make your measurements imprecise

@atomic14 2 года назад

The metal ruler does seem to have triggered a lot of people! I’ve tested with plastic and wooden rulers - there’s no perceivable difference.

@TheDevrim 2 года назад

can you use more than one main coil next to each other to farther it's range?

@marklatimer7333 2 года назад

If you change the capacitor on some of the wireless LED you can change the frequency of the tuned circuit, by driving the charging coil with different frequencies you can choose which LEDs come on and when. You will need a wide span on frequencies because LC circuits have a wide bandwidth.

@photovideoman8189 2 года назад

I believe the "odd waveform"at 3:34 is the sine wave emitted by the charger being half-wave rectified by the "diode" part of the LED. The positive half of the wave is allowed to pass, but the negative half is blocked by the LED. If you put a full-bridge rectifier on the tiny PCB before filtering it through the capacitor, you would probably get a brighter output from the LED.

@DiffEQ 2 года назад

Well, you would be wrong. The power source is DC so there is no sinewave. Converting DC into a sinewave takes more circuitry than you, apparently, can imagine. Even a pseudo-sinewave is difficult (often called a modified sinewave, but done for marketing purposes because it's a modified square wave. Why would you modify a sine wave?) to build. This is nothing more than a tuned chopper circuit. Change the frequency or induction coil enough and you will get closer and closer to the chopped DC signal. I'm not even going to comment on the ridiculousness of the full-wave bridge rectification you noted. You may be the smartest one in the room, but it's classic Dunning-Kruger to the rest of us.

@photovideoman8189 2 года назад

@@DiffEQ lol I have a degree in electrical engineering... I'm not an analog electrics expert by any means, but according to the circuit diagram he showed and the oscilloscope readout, the giant coil powering the LEDs is being pulsed with DC, and the inductance of the coil is filtering the pulsed DC waveform into a pseudo-sinewave. That pseudo-sinewave is then picked up by the inductors on the LEDs, and filtered with the capacitors and the negative half is chopped by the diode in the circuit. As far as the LED circuit behavior goes, it's exactly the same as any AC circuit. If I'm misunderstanding how this works I'd love to know, but that's how all of the wireless power transmission methods I've studied work, so I assume this is pretty much the same. I would recommend looking up transformers and antennas if you want to learn more! Electrical engineering is a really cool field! (Pun fully intended!)

@pastek957 2 года назад

Lmao I published a link and got auto-removed Anyway I was saying that I did a simulation showing how you can totally get a sine wave by shorting a parallel LC circuit to ground with a DC source, it's a basic resonnance phenomenon I simulated the circuit shown in the video using a NPN saturated with a square pulse at the resonant freq of the LC and it works fine. Also, I get the same waveform when coupling the L with another LC (the LED side) in parallel with a diode. The Vf of the diode shorts the receiver coil and steals power from the emitter, which causes the flat response. Edit: Forgot to add: Richard u stoopid

@toptriode1604 2 года назад

Here is some insight: first, yes, you do get a sinusoidal waveform with the setup shown (inductive transmission of square waves into a resonant tank circuit). However, the wave becomes clipped due to the shunting action of the diode being lit, because it is drawing current when forward biased. When reversed biased, it does not conduct so the sine wave is untouched and its full voltage excursion is displayed by the oscilloscope. Half wave rectification is typically done with the opposite topology (series rather than shunt). Usually you see shunt rectification in RF and AM diode detectors.

@BenEmson 2 года назад

Great video well done!

@beefsoda1 2 года назад

I love this channel ❤️!

@NekoSteamBoy 2 года назад

This is awesome :D so could i use this to make "moving lights" inside a fluid chamber like (i wouldnt use animals in it) just inside a fishtank and let them circulate with a pump etc? Incase the Led in Resin or something and make a big tank sized coil underneath it?

@edgeeffect 2 года назад

Not quite got the range Nicola Tesla was aiming for. ;)

@Vgp-rp4iu 2 года назад

Would the charger need to be in a circle? Like could I modify something like this on my house where I have the charger in a long strip along the gutters then somehow attach the lights along the gutters wirelessly? Or would these probably not be bright enough for something like that?

@bretthorowitz6136 10 месяцев назад

Can you make a custom coil? Such as a picture frame or house it in expos resin? Thinking of multi use for these

@justinhendren 2 года назад

Try making a very large diameter coil (2 meters or so) and place a Christmas tree inside of it with the LEDs glued to branches. You'd probably have to build your own driver circuit, and those with pacemakers may want to stand far away.

@jonahbert111 2 года назад

How about a replica of Saturn with the rings being the coil, and the LEDs on or inside the globe ?

@michaeldarnell6074 2 года назад

I am imagining a cube of translucent blocks like a Rubik's cube but linked together at the center to allow them to light up only when they are able to connect to form logic circuits optically with wireless photovoltaic cells. This could create a new kind of game.

@cfnorg5308 2 года назад

Do they work near induction furnaces too?

@lrt100 2 года назад

this is great. could you add a small supercapacitor so when the led is removed from the coil it would still light up for a short time?

@W4Cthunderbird 2 года назад

That would be awesome as board game pieces

@JemClarke 2 года назад

Bloody oath Thunderbird they would.

@ET_AYY_LMAO 2 года назад

I need to buy some of these and put them in 3dprint gemstones, either clear filament or resin and make myself a desk ornament with a dragon treasure or something. I guess these pieces would be great for some kind of board game, especially if you can get them with different frequency response.

@Guitarsoulmadness 2 года назад

This could take model kit lightning to another whole level. Love it.

@ElementofKindness 2 года назад

Hey! Those LEDs mounted in one of those magnetic levitating globes would really be neat. Not only levitates but lights up without any wires!

@horrorhotel1999 2 года назад

Very cool idea, but I think people will simply assume them to be battery powered

@noname-oe9jy 2 года назад

Nickola Tesla has entered the chat

@Deutz-fahr-101 2 года назад

Do not use a metal ruler for measuring in this case it messes with the magnetic fields and might even amplify or strengthen the magnetic fields which makes the measurement far from accurate

@erikaadvisser 2 года назад

Thinking the same thing. I wonder what the difference is when using a plastic ruler instead.

@laurens4359 2 года назад

@@erikaadvisser for the purposes of this experiment a stainless steel ruler is fine. Permeability of SS is not that high. Presumably the power falls off with R^3 (magnetic field)

@Rukus-by-nature Год назад

Which one is the best,As far as kits? And can you Unravel the coil and expand the range?

@SummerCrowfpv 2 года назад

At the start of the video you held them in your hand was it the coil powering them or the electric field from your body? If it’s your body that would be really cool

@paulgray1318 2 года назад

Coat them in epoxy - ball shape and have some liquid and agitation (maybe lava lamp or one of those piezo sonic agitators and have the light balls agitated in the liquid and with the wireless charger in the base. You would have the bases of something that some may like. Depending upon how far you can agitate (mineral oil may be good liquid) and container, you may get them far enough away so they're dimming will add to things. Probably start with jam jar and work out liquid so they are almost balanced and shake, place upon wireless charger and see if as an effort it has potential. But need to avail the whole wireless light aspect and floating some how would be best. Another idea - again make into epoxy marbles and do a marble track machine and have them light up in places. But I'd also be tempted to carry one around with me as, if it ever flashes - you have found a source of free energy ;).

@atomic14 2 года назад

I like it - hadn’t thought of actually putting them in liquid - but obvious really, you can seal them completely.

@FurrBeard 2 года назад

And if there were a way to assemble them with two LEDs connected in opposite directions across the coil so they'd illuminate the whole light ball - especially with some diffusion material in the mix. ;)

@paulgray1318 2 года назад

@@FurrBeard Interesting, AFAIK wireless chargers induce AC and as LED's are diodes. Then I'm wondering if you could connect two to the coil in opposite polarity and tap all that power. Which would make the 360 lighting effect easier. Though doing one layer to coat and sanding that down, then doing finish shape coat would get you a long way I suspect already.

@gonzo710 2 года назад

I wanna put these in my fish tank

@luke-zc7yi 2 года назад

consider your ruler may be increasing the range! i wonder if results would be different with a non-metalic ruler

@tikaanipippin 2 года назад

Precisely, a steel ruler may connect the magnetic field of the induction coil way beyond the coil's plane. An induction coil attached to the oscilloscope could measure this.

@triplewinlin5576 2 года назад

Would these work if placed in a glass container, which is set upon the power source?

@121stFleet 2 года назад

Can the power ring be shaped or must it stay circular? Would be a fantastic way to add lights to Lego creations with minimal set changes but the ring may need to be shaped to hide it away in the models

@trinidad17 2 года назад

Nice I've made those before, it's surprisingly easy to create, although those seem to be very well tuned as their range is great compared to the ones I've created which use a much beefier "transmitter".

@UnvarnishedTarnished 2 года назад

Hey I know this comment is about 6 months old so I hope you see this but wondering if you know of a tutorial on how to make them? I would like to make some for 1mm LEDs.

@simonRTJ 2 года назад

I would encase them in clear resin with little folds like raisins, then put them in a bottle of fizzy water, and coil below or on the side of the bottle and watch them rise and fall showing the model of cavitation and boyancy.

@SoundzAlive1 2 года назад

A superconductor with a floating object spinning above it which lights up when your hand (in glove with coil) moves near. The magic of wireless induction. André

@catherineharris4746 Год назад

Simply outstanding!👏👏👍👍👍

@southernexposure123 2 года назад

My first thought is to use them during Astrophotography sessions. We need very dim lights (usually red) so we can preserve our night vision. I'd put the lights near my focuser knobs, EQ mount hand controller, Inrervalometer, tripod legs, chair and various other places I want to not bump while taking pictures and navigating around my picture taking site. It's common to take pictures from just after dark until almost sun rise. Another use is night lights from bedroom to bathroom for adults and todlers. They'd be useful in automobiles as dim indicator lights at various times. Thanks for the video and for sharing how to make them as a DIY project.

@Lordtheobald 2 года назад

My first thought was light bright. Since they can be placed in any space within the parameters you gave, that means you could make a 3d light bright setup that goes above, below, and all around the coil.

@namedrop721 2 года назад

Oh I like you

@sandramayes8679 2 года назад

That's what they remind me of! Lol

@JechtAruon 2 года назад

Great idea a retro toy upgraded to new tech

@TheShottyBoys 2 года назад

Make only blue LEDs and put a bunch of them in your hand. At night you go somewhere where some ppl are around and you open both hands together and look into it, and when someone looks at you, then you close hands fast and look at them and run away as fast as you can

@edgeg.708 2 года назад

CAN YOU TELL ME HOW MANY DIFFERENT COLOR LED's ARE AVAILABLE INCLUDING A CLEAR LIGHT? I NEED 6 TOTAL FOR MY PROJECT.

@L8rCloud 2 года назад

If you could waterproof them and give them neutral buoyancy they could make a kick-ass snow globe for Christmas

@buddy1155 2 года назад

You can put them a non conductive clear liquid with high density.

@DukeBox79 2 года назад

I have one question, can you use multiple coils so you can place them next or above each other to have a larger range or will that interfere ? As a project suggestion, it would be nice to light-up some lego builds, for example one of the Christmas sets. Existing light kits have a lot of wires that are in sight and sometimes even makes the build structure less sturdy.

@joefish6091 2 года назад

Multiple coils should not be a problem.

@statementleaver8095 2 года назад

I would say yes multiple coils can be used. It would act as a booster as more power in a smaller area. However a simple magnet should have the ability to alter the electronic field for distance purposes.