Without sync it would drift, and phase would almost never be correct. Easy test: slow the blades slightly. You can add something to the tips. Even if freq is correct, it still needs a phase reference. Accelerometer near the pivot might work to detect gravity. Another easy test: whilst on, rotate the base. If the reference is gravity the image should remain upright. If referenced to the base, the image will follow the orientation of the base. 😁
@@atomic14 Wouldn't it have been easier to use slip rings though? Just wondering if there are any advantages of the wireless transmission in this case...
Thanks - I was originally thinking I’d buy this and then try and make my own - after taking this apart I’m not sure I can do anything quite as sophisticated.
Couldnt it be using the offset IR led in the base to always know where the rotor is and how fast it is spinning? Just measure how long the gap between pulses takes, then measure how many % of that time elapsed since the last pulse. There would have to be insane precision otherwise because even the tiniest mismatch would result in a slowly turning image
I must admit, initially, I thought the same, but I think it's down to the refresh rate. I don't think with addressable LEDs you'd be able to clock out the pixels quickly enough and have the LEDs latch the results fast enough to get a high enough resolution. Might be fine for a small display - maybe the one I have would work, but think for larger displays it might not.
3:13- looks like the motor driver has an output that'll tell you how fast it's spinning. i guess it is being communicated over the remote control led? how cursed :D
I would assume that that LED is just on (or on with a particular frequency) and every time the top goes around, it's syncronized by the receiver of that LED from the bottom. That's way too good sync to be open loop
I recently bought a holographic led fan, it works fine and projects the image but some leds don't light as they should, do you think it could be a wiring problem? How does it work? I want to know if I can fix it on my own 😢
Curious, what's the cutting edge (sic) holographic tech available today, within reach of most makers? Monitor with Cam and face/eye position recognition to dynamically change projected viewing angle?
a fun bit of kit but the price stopped my fun but a great video, your link takes me though not to the product but a chinese page, so searched on Aliexpress and found it👍
Wow quite an expensive way of removing finger tips, I could recommend a pair of garden shears as a cheaper alternative :-) . At least it can give a bit more colour to the spurt of blood as it leaves the fingers via the fan, i might also add an improvement at the point where the shite hits the fan could be had.
They must have some way to calibrate the resonant frequency after assembly in software. They set it and forget it. What happens -if- when one of the blades breaks and takes off? I think one will need more than safety glasses. More like bomb disposal suit! A cool video and idea nevertheless.
Going from not knowing such a thing exsist, to a complete breakdown.
🤘😎🤘
Back in the days I built my own POV. From some old Ikea lamp LEDs. A cheap drill. An 8Bit micro controller and scrap wood. Was fun.
Nice!
@@atomic14 Mr. Engineer, thank you very much for your explanation, my only question is whether these 3D hologram fans need programming or not?
Without sync it would drift, and phase would almost never be correct. Easy test: slow the blades slightly. You can add something to the tips. Even if freq is correct, it still needs a phase reference. Accelerometer near the pivot might work to detect gravity. Another easy test: whilst on, rotate the base. If the reference is gravity the image should remain upright. If referenced to the base, the image will follow the orientation of the base. 😁
we can see if there is any tiny magnet.
Thank U so much, I've always wanted to see the product in detail since last year🎉
There's a few variations, but I think they probably all work in a similar way. Using the wireless power transfer is quite ingenious.
@@atomic14 indeed it is, wanted to gety hands on one but no delivery option too bad
@@atomic14 Wouldn't it have been easier to use slip rings though? Just wondering if there are any advantages of the wireless transmission in this case...
Love the explanation
Thanks for the intro... I'm buying one!
Excellent and thorough teardown 👍
Thanks - I was originally thinking I’d buy this and then try and make my own - after taking this apart I’m not sure I can do anything quite as sophisticated.
@@atomic14 U can try n that will be a great video
Great video! Where did you find the product specifications and information on the circuitry?
Buying one now. Thanks for the heads up. This thing is awesome.
Have fun! Just keep away from the blades!
Thank you Sir.
Thank you for details.
Good wishes.
My pleasure!
I just bought one today and if anyone wonders if the effect is exactly like in the video, YES it is , i am astounded.
Is the blade visible or was this a result of the cameras refresh rate?
Couldnt it be using the offset IR led in the base to always know where the rotor is and how fast it is spinning? Just measure how long the gap between pulses takes, then measure how many % of that time elapsed since the last pulse. There would have to be insane precision otherwise because even the tiniest mismatch would result in a slowly turning image
It just be doing something like that. Maybe just restarting the image every time and slowly adjusting the timings to match.
That is blooming awesome!!!!
It's a pretty amazing combination of technologies, the wireless power transfer is a stroke of genius.
any possiblity using hdmi driver chipset as input?
I see these use opticla inputs, any info around these?
What brand is this unit, look reasonable quality
Really AMAZING. 🙌🏻
I wonder why they don't use APA102 leds and dispense with the driver ic's. Perhaps it's cheaper this way.
I must admit, initially, I thought the same, but I think it's down to the refresh rate. I don't think with addressable LEDs you'd be able to clock out the pixels quickly enough and have the LEDs latch the results fast enough to get a high enough resolution. Might be fine for a small display - maybe the one I have would work, but think for larger displays it might not.
Be glad you don't have to worry about hair getting tangled in it! 😱
Those days are long gone :)
Best POV I've seen to date...cheers.
Yeah, it’s really quite impressive. As always the camera really struggles to capture it.
Hello, What video camera are you using to record the holograms because my iPhone camera is not showing the holo correctly
The video playback on this device looked a little choppy. Do you know how many frames per second it is able to display?
I really was hoping you would say what the input power was
3:13- looks like the motor driver has an output that'll tell you how fast it's spinning. i guess it is being communicated over the remote control led? how cursed :D
I would assume that that LED is just on (or on with a particular frequency) and every time the top goes around, it's syncronized by the receiver of that LED from the bottom. That's way too good sync to be open loop
What's the name that diodeled?
I was very impressed in your electronic knowledge. I would love to pick your brain
do they have them that could attach to a video camera to stream videos of winter on my house fan in August
Amazing!
can this do screen mirroring from your phone?
Fascinating
I just bought one of these and can't figure out how to upload an image/video, someone please help
Does anyone have videos for this fan?
Have you had issues where the outer leds just light up white creating a circular boarder.
I recently bought a holographic led fan, it works fine and projects the image but some leds don't light as they should, do you think it could be a wiring problem?
How does it work? I want to know if I can fix it on my own 😢
It's most likely some of the LEDs are faulty. Is it one or two and are they always off?
The Nipkow disk was patented in 1884.
Curious, what's the cutting edge (sic) holographic tech available today, within reach of most makers? Monitor with Cam and face/eye position recognition to dynamically change projected viewing angle?
I’ve seen some interesting things done with multiple transparent OLED displays.
@@atomic14
Says me,
the inventor of the 4D Political Analysis Monitor.
Had no idea it had a side effect!
My 4D Political Analysis Monitor has many side effects!
Anyone know how where i can access a resource of the image files or how to create moving images? the software i got only seems tomake still images
a fun bit of kit but the price stopped my fun but a great video, your link takes me though not to the product but a chinese page, so searched on Aliexpress and found it👍
Where can I buy (in USA) the best 3D LED Hologram that has a memory card to upload of store products?
Any idea what RPM these things spin at?
Wow quite an expensive way of removing finger tips, I could recommend a pair of garden shears as a cheaper alternative :-) . At least it can give a bit more colour to the spurt of blood as it leaves the fingers via the fan, i might also add an improvement at the point where the shite hits the fan could be had.
I really want to reverse engineer it some more - would be great to be able to stream content directly to it.
@@atomic14 That should make a great video. Also it would be nice to see how it gets it index pulse to keep the display stable.
They must have some way to calibrate the resonant frequency after assembly in software. They set it and forget it.
What happens -if- when one of the blades breaks and takes off? I think one will need more than safety glasses.
More like bomb disposal suit!
A cool video and idea nevertheless.
I have a question
?
my hologram led fan does not work correctly , it display "can't read card" can you help me for that?
Why werent this made with ws2812b leds? speed requirement?
I think so yes, I believe the bit rate for ws LEDs is 800Kbps. I think you wouldn't be able to get enough angular resolution with that update rate.
What type of LED used in the halogram fan
Led rgb 2020
Led rgb 2020 smd
there are 2 single blade versions what one did you buy?
I think I got type 1, but I’m not entirely sure what the difference is between them.
@@atomic14 haha ya i was trying to sort that out but cant seem to figure it out.
Excelente, yo también diseñé uno para reproducción de video en tiempo real 😅👍😇
Killer toy :)
It have an ARMv7?, wait a minute... it can run doom?, it have bluetooth right?, hmnn...
And i thought my quadcopter was dangerous 🤪
Stick some LEDs on the propellers :)
Can you put a music video on it?
You can upload pretty much any video. But there’s no speaker so you would need to play the audio using something else.
you sound just like griffpatch
Soporta imágenes gif? O MP4?
Where's the fan part? They lied...again. 😊
LAME PUT MAGNIFIER IN FRONT YOUR EYE THEN USE YOUR PHONE😊
I've no idea what this means - but I'll take 10 of whatever it is you have...
Not a fan of the idea of installing a Chinese app and giving access to files and wifi
me too man, me too
Can it play Minecraft
So clever, yet so pointless.
Completely useless thing ...
Indeed - but isn't that what makes it so much fun?
I'm sure the Chines military could come up with uses for the technology.
Why it useless?