at the last of video does your produced photos the black and white or the colored ? i don't understand
@seeinghearingengineering73683 жыл бұрын
You can understand very well how the Nipkow Disc works. And your enthusiasm.
@smlpcollective41663 жыл бұрын
Hey hi! Just wanted to say that I teach engineering students, and will be sharing this as an illustration of how Nipkow disks work (in the context of confocal scanning microscopes) with my students. They will love this! Thanks for sharing this.
@DoctorVolt3 жыл бұрын
Nice to read this. Hope they enjoy.
@smlpcollective41663 жыл бұрын
@@DoctorVolt Indeed they will!
@DL-kc8fcАй бұрын
Absolutely brilliant work. Now everyone understands why the Nipkow camera was never built in practice. In the 1930s, the way it was handled was that the scene was shot on classic film. This film (still wet) was passed through a one-hole reel (in practice 2 or 4 holes were used). The holes only performed line decomposition (the holes did not form a worm). Slide decomposition was achieved by moving the film. In this way, excellent picture quality was achieved, which could be watched on Nipkow television. This principle of scanning existed in the days of cathode ray tubes before the advent of Ampex, etc. - a high contrast screen with a single line scanning film that scrolled...
@SiskinOnUTube2 жыл бұрын
It would be interesting to see that made with an infrared temperature sensor. you could do thermal imaging.
@Ootgreet111 ай бұрын
Love the tuxedo kitty's expression. He's like "Dad! The resolution of that thing will suck! At least use a vidicon!"
@Sport22j21 күн бұрын
Perfect.
@AjinkyaMahajan3 жыл бұрын
Great Work!!!
@fragglet Жыл бұрын
Sure, the images are hard to make out, but the teapot at least looks pretty good!
@estebanmartinez1293 Жыл бұрын
Awesome!!! Great work
@vtbn532 жыл бұрын
If you redrill the holes to take (via a push fit) optical quality acrylic balls (making it a so called bead disk) you will solve your light and resolution issues. Interesting concept (still camera).
@DoctorVolt2 жыл бұрын
Yes, there are many other ways to make this camera better. For example drilling more holes, using a photomultiplier instead of the photodiode etc.
@marcsmithsonian97732 жыл бұрын
Use a photoresistor it can be thousand times mire sensitive then photo diode, also you can try with photon multiplier tube from old night vision device, that can increase sensitiviti to mental high level. Good luck !
@DoctorVolt2 жыл бұрын
I already thought of using an avalanche diode. But These are rather expensive, though.
@marcsmithsonian97732 жыл бұрын
@@DoctorVoltwhy not LDR ? Or get broken drum scanner brand like "screen" or "linotype" there are using photon multiplier sensor... and scan using same principle like your device but extremely sensitive. Old night vision googles are 20$ in thrift stores, or broken on ebay. Cheers M
@DoctorVolt2 жыл бұрын
@@marcsmithsonian9773 I tried LDRs as well. These have a bigger surface than photo diodes and thus can collect more light. But it turned out that they react very sluggishly on poor light condition. So image quality with photo diodes was way better than with LDR.
@Thyraptor Жыл бұрын
5:16 FREDERICK FREDDY FAZBEAR!!???!!??
@youvebeenspooked Жыл бұрын
nice work man!
@WolfPackYT Жыл бұрын
Super cool!
@MangosharkMDk6 ай бұрын
Dope.
@SpokenBroke2 жыл бұрын
I love your assessment :D
@erikmolnar65852 жыл бұрын
Great video! I am not educated in such things but I still felt like the info was easy to understand. The big picture at least. You know, you ruined that poor record though! Joking. Cheers from South Texas
@alexanderstrelets8234 Жыл бұрын
I can't believe the photodiode is so slow. What was the original sensor type those days?
@DoctorVolt Жыл бұрын
The photodiode is so slow because it has to make do with very little light.
@kocovgoce3 жыл бұрын
maybe if on the nip disk is make quite small openings somewhere around 400 it is possible to obtain a sufficiently sharp image?
@DoctorVolt3 жыл бұрын
Yes, I know that there were Nipkow disks with up to 441 lines resolution, until the electronical cameras came up.
@kocovgoce3 жыл бұрын
@@DoctorVolt do you have a link or a photo of this 441 lines nipkow disk ?
@DoctorVolt3 жыл бұрын
I read about it in an article. second.wiki/wiki/filmabtaster
@kocovgoce3 жыл бұрын
@@DoctorVolt thanks
@LeonardoPJ3 жыл бұрын
Very cool. Do you have any idea how you could make a sensor like this to identify color?
@DoctorVolt3 жыл бұрын
Yes, with a color sensor instead of the plain photo diode we could even take color photos.
@greenaum Жыл бұрын
Did you think of using an LDR rather than a photodiode? And an analogue amp front-end to make it more sensitive and perhaps give a better range, by mapping values to something more linear, to compensate against the non-linearity of your sensor? If you switch to an LDR you might not need to re-map, they may be more linear in a certain range. Baird managed live video with whatever awful light sensor he had back then, some sort of vacuum tube, possibly using selenium.You also might try using R,G,B leds, pulsing each one in turn for each pixel as the Nipkow disc moves round, assuming your sensor is fast enough. With enough light, it'll likely be quicker in response. Then you'd have colour! Alternatively, have 3 LDRs with a colour filter in front of each one. In fact a larger LDR might be more sensitive, too, or perhaps use a couple in parallel. Whatever, you'd just need to focus to a wider spot at that point. It would be dimmer, but you fix that with strong lighting, the same way they did back in the early days of TV. Really, Baird gets far too much credit, when his invention is just applying a Nipkow disc to it's intended purpose. Nipkow deserves more than half the credit for Baird's television. It's the working element, nothing would work without it. Ultimately though it was Farnsworth who made television that was actually practical, Baird's idea didn't last long, before the world dumped mechanically-scanned TV altogether.
@edgeeffect2 жыл бұрын
Most of the records I owned made weird noises but no music. ;)
@fantasticania7 ай бұрын
I love the cat ;)
@vladimirkesaev68182 жыл бұрын
replace a diode with a pyrometer and your optics with reflectors and it could be a nice thermal-vision system... ;)
@gamebox-132 жыл бұрын
No, it will always show temperature of the disc
@treadmillrepair7542 жыл бұрын
Amazing
@Eli-dx2uj Жыл бұрын
Shouldve gone down the flying spot scanner route
@VVerVVurm2 жыл бұрын
now feed the output into one of the AI denoising/upscaling algorithms for a 4k picture xD
@Elglassios2 жыл бұрын
Hallo. Kommst du aus Ostdeutschland?
@DoctorVolt2 жыл бұрын
Nein...
@Elglassios2 жыл бұрын
@@DoctorVolt ich dachte wegen der Schallplatte.
@DoctorVolt2 жыл бұрын
Stimmt. Habe sie mir vor langer, langer Zeit in Ostberlin gekauft.
@sebastiankusyk77643 жыл бұрын
maybe some filter would reduce the noise to enable more fps? If recorded objects don't move too fast, the signal will repeat with the same frequency that frames repeat, while I think noise frequency distribution won't depend on it. Also you can cover some edge to get repeatedly pure noise to measure it's parameters.
@DoctorVolt3 жыл бұрын
I already tried different filters, iterations etc. in GIMP. But nothing really improved the quality of the pictures.
@weegie33432 жыл бұрын
when you can’t afford a webcam:
@wilfredswinkels Жыл бұрын
If you put a PIR sensor in place of the photodiode you could see IR....imagine if you put an 5GHz antenna in place (and modded your setup a tiny bit :-p ) you could see in 5GHz
@DoctorVolt Жыл бұрын
But I'd have to focus the IR or 5GHz image on the nipkow disk somehow.
@carlosbah46233 ай бұрын
Woww
@Steven-re7xt Жыл бұрын
Nix bad. 100 ano alt tec. Ja Mir frund. Danke zier. Some times used to xmit "wanted" photo!