This reminds me a lot of the Spirograph toy. Personally, I prefer your version, both because of its elegance and smooth movement, as well as the simplicity of its design.
I actually considered that for a project/video at one time. I wanted to make a ceiling mounted sand pendulum in my entryway, where there is a high ceiling that would allow for a long radius. A heavy enough plumb-bob with a long cable would be quite effective against the friction caused by the sand. It still would require a simple 2-axis needle gimbal at the top, but it wouldn't be too difficult. The better half decided against it. Instead, we have a schefflera there.
I have never seen one of those that were not tight to move, and the key here is to achieve as little friction as possible. If there is such a thing that easily moves, I still want to use a wooden gimbal for this project, because of both its visual appeal and challenge to construct. Not trying to shoot down ideas; just explaining what I want. Thanks.
We were discussing that in the comments. That is a really interesting idea, but a gimbal-router would carve a portion of a sphere, and a spoon dish is sort of elliptical. I intend to build one someday, anyhow.
Thanks. I know you want to make one, lol. Putting bearings in the gimbal is proving to be tough, though. Anyhow, you just have to look up harmonograph if you never saw one before, it blew my mind.
Double WOW! I'm in the process of building a glide or steadicam and I've been cruising RUclips trying to get ideas for building my gimbal! I love your video (and the drawings). Good job & well done!
608 bearings measure 22 mm x 8 mm x 7 mm, they should be perfect for this project and they cost about $15 or less for a set of 8. You can find them at your local skateboard shop. A mortise bit should be enough to set them into the wood/plywood darn near perfectly assuming you have the right size mortise bit to work with or suffer using a Dremel. This would be great as a stabilizer for photograph. Since I have the bearings, I should try it using this info. You can also recycle bearings from old VCR's. The spindles have excellent bearings in them.
I've seen an inverted one similar to those used to create the Japanese Sand gardens by basically using a pendulum with a pointed plumb bob attachment on the end of a small rod. When set in motion, it's small tip draws circular and elliptical patterns in the fine sand. Easy to erase and produce another one. You project however, does seem quite interesting.
I was saying: "what the heck is he doing that for?", then it drew that pattern. I've not seen a mechanical one of these before this. Waiting to see what you come up with in the end.
It would seem that we have similar brains: mine talks to me also. A very simple 2-axis gimbal design does already exist for this application, but I want my H-graph to employ a fancy wooden compound gimbal. As for the bearing problem, I am optimistic that I have a good plan for how I'm going to attack it.
Thank you for this. As if I didn't have enough project going on, now I will be making a one of these with a counter weight for my motorcycle to mount my camera for more stable video.
Phillip Morrison Be sure to do plenty of research. Steady-cams are notoriously difficult to get working, and many of the RUclips demonstrations are gross exaggerations of how well they work.
Check out vxb bearings. A 1/4 id roller bearing is cheap. You can still use the shaft and get smooth, drag free rotations. This project has been on the shelf for too long, time to resurrect it. I really enjoy you're vids and can't wait for the next one, no matter the subject.
Thank you very much. I think this is such interesting stuff. Unfortunately time is very limited for me, so I am sorry to say that the results may take awhile!
You should have a look at Ball Joint Swivel Bearings. Seems like with a Shaft Collar you could be up and running in no time. Still looking forward to see what you come up with tho.
Could you not shave a side of a ball flat for your plane then capture the ball in a cage perhaps a large bearing . Or am i missing something ? Oh great channels you have enjoy both. Or instead of capturing the ball suspend it with a spring wouldn't that allow for all axis of movement plus up and down ? Now i will thinking about this for days !!
The initial push causes the shape to become (noticeably) elliptical. As for precession, I'm not sure if that would be visible here, but I will tell you this: I spent a few _days_ trying to understand elliptical precession while working on the harmonograph, and I was still confused at the end. After some really intense and weird math, reading, and speculations, I don't think I came to any satisfactory conclusions. I would need to consult a physics professional, but to be honest, I'm a bit skeptical that we understand it entirely. Of course, a harmonograph is an incredibly complex system of physical phenomena, so I will concede that there were plenty of variables/effects that I might not have controlled for. If you have interest in the subject, I would start with the wiki on the Foucault pendulum. Sounds easy enough at first!
Something to think about. Good question. But it makes me think will it still precess if the initial force applied to the object is exactly perpendicular to the line joining the center (of the whole system) and the point of release? I would want to know whether it will still behave in the same way!
I wonder if that's actually the case; a perfectly aerodynamic propeller probably could be found to have a relationship with some more simple, naturally reproducible phenomenon, just like this. That was a mouthful. Anyhow, I once found this teardrop shape (you can see it at the end of the "drawing machine marker" vid) that resembled an ideal Acheulean hand axe, just by drawing around a circle that was at the end of a beam. Here is my point, and it's an important one: All things physical, and thus, all forms or patterns, intentionally conceived or otherwise, have a mathematical structure that defines them. You can draw a hand-axe using equations that can be graphed, and those mathematical elements can be captured by simple machines. When you build a machine, you are expressing a mathematical truth, and each part is one of the pieces of that expression. This is deeply philosophical stuff. Do we define mathematics, or are we just an expression of it? Good luck out there.
pocket83 My thoughts as well. I wonder if it would be possible to build a program that could interpret the lines into a 3d rendering. The forces of nature always know best, if we just knew how to listen. Thanks for sharing your experiments with us :)
RAPAZ SUA IDEIA FOI BOA MAS EM OFICINA TEM PIVOR DE ESTABILIZADOR DE CARRO DA SERTINHO COMO USA COM CABO COMO VC E INTELIGENTE NÃO DIFICIL COLOCA ELE E USADO E DE GRAÇA
C'mon. Is that the wittiest thing you can produce? I can't waste my talents on a meat-head such as yourself. At least make me laugh. Telling me I'm a homo in the RUclips comments is hardly pushing the envelope. I'm heterosexual! I'll give you one more try.
This reminds me a lot of the Spirograph toy. Personally, I prefer your version, both because of its elegance and smooth movement, as well as the simplicity of its design.
I actually considered that for a project/video at one time. I wanted to make a ceiling mounted sand pendulum in my entryway, where there is a high ceiling that would allow for a long radius. A heavy enough plumb-bob with a long cable would be quite effective against the friction caused by the sand. It still would require a simple 2-axis needle gimbal at the top, but it wouldn't be too difficult. The better half decided against it. Instead, we have a schefflera there.
I have never seen one of those that were not tight to move, and the key here is to achieve as little friction as possible. If there is such a thing that easily moves, I still want to use a wooden gimbal for this project, because of both its visual appeal and challenge to construct. Not trying to shoot down ideas; just explaining what I want. Thanks.
We were discussing that in the comments. That is a really interesting idea, but a gimbal-router would carve a portion of a sphere, and a spoon dish is sort of elliptical. I intend to build one someday, anyhow.
I tried pvc, bearings, and socket head cap screws. This was easier to come up with the rings. Thanks for the ideas.
Thanks. I know you want to make one, lol. Putting bearings in the gimbal is proving to be tough, though. Anyhow, you just have to look up harmonograph if you never saw one before, it blew my mind.
Double WOW! I'm in the process of building a glide or steadicam and I've been cruising RUclips trying to get ideas for building my gimbal! I love your video (and the drawings). Good job & well done!
I’m trying a paint pendulum and this video gave me the idea of what I need thank you for sharing your knowledge
this is one of the most mesmerizing videos I've ever seen!
608 bearings measure 22 mm x 8 mm x 7 mm, they should be perfect for this project and they cost about $15 or less for a set of 8. You can find them at your local skateboard shop. A mortise bit should be enough to set them into the wood/plywood darn near perfectly assuming you have the right size mortise bit to work with or suffer using a Dremel. This would be great as a stabilizer for photograph. Since I have the bearings, I should try it using this info. You can also recycle bearings from old VCR's. The spindles have excellent bearings in them.
I've seen an inverted one similar to those used to create the Japanese Sand gardens by basically using a pendulum with a pointed plumb bob attachment on the end of a small rod. When set in motion, it's small tip draws circular and elliptical patterns in the fine sand. Easy to erase and produce another one. You project however, does seem quite interesting.
I actually learned so much during this videos, thanks!
I came here for the Gimbal lock, it isnt here, but I liked this. Nice video
same
I was saying: "what the heck is he doing that for?", then it drew that pattern. I've not seen a mechanical one of these before this.
Waiting to see what you come up with in the end.
How did it work out on the final version. The prototype worked real good.
Did you ever succeed on your next gimbal joint that you were going to build for your harmonograph
It would seem that we have similar brains: mine talks to me also. A very simple 2-axis gimbal design does already exist for this application, but I want my H-graph to employ a fancy wooden compound gimbal. As for the bearing problem, I am optimistic that I have a good plan for how I'm going to attack it.
That is so cool. Thanks for making this awesome video.
Thank you for this. As if I didn't have enough project going on, now I will be making a one of these with a counter weight for my motorcycle to mount my camera for more stable video.
Phillip Morrison Be sure to do plenty of research. Steady-cams are notoriously difficult to get working, and many of the RUclips demonstrations are gross exaggerations of how well they work.
pocket83 That's why there isn't one on there now.
thanks for the great information; cant wait for the completed project.
Check out vxb bearings. A 1/4 id roller bearing is cheap. You can still use the shaft and get smooth, drag free rotations. This project has been on the shelf for too long, time to resurrect it.
I really enjoy you're vids and can't wait for the next one, no matter the subject.
brilliant. i'm looking forward to when you comeplete the harmonograph
Fascinating!!!! Beautiful!! Good luck!!!!!
this is 3d printable. the bearings idea is reaally good. Which bearings would you like to use?
Great video, very informative. I also really like the drawing, that the gimball made
Thanks. I'm glad you enjoyed ;)
Thank you very much. I think this is such interesting stuff. Unfortunately time is very limited for me, so I am sorry to say that the results may take awhile!
Brilliant!! Great work in science..
Man you’re a genius
Good work! I look forward to seeing the results!
Pretty damn cool. Kinda want to make one!
I think is your best video.
Very neat, makes me want to go build a simple gimbal to mess with! Did you eventually build the two gimbal device? Don't leave us in suspense.
Extremely cool, brilliant idea. Thank you. :)
A spherical ball joint would work nicely, as well
You should have a look at Ball Joint Swivel Bearings. Seems like with a Shaft Collar you could be up and running in no time. Still looking forward to see what you come up with tho.
Not bad. I'll have to show my son this later, he likes artwork stuff.
Now that's what i need to make a tow bar for my scooter lol
Bazzles: In the case of a mobo scooter trailer, a universal joint is all that's needed.
Wooooow that was cool!
You're a genius!
is anything happened in the last 4 years?
wow..great experiment...! thx a lot..
This is really cool mate. Did you ever get around to making a harmonograph? I'd love to make my own (or at least give it a go).
Dude, U M smart.. nice vid.. dig the geometry .
Bigwingrider1800 Meanwhile, my head is starting to hurt watching this, so I'm off to search for monkeys doin' it.
heres an idea make a gimbal for your camera to stabilize your footage and decrease shakiness! that should be a challenge!
Nice!
1000 likes, fantastic video!
(I got the honors) :)
so interesting, nice one.
Interesante...saludos desde Venezuela
Could you not shave a side of a ball flat for your plane then capture the ball in a cage perhaps a large bearing . Or am i missing something ? Oh great channels you have enjoy both. Or instead of capturing the ball suspend it with a spring wouldn't that allow for all axis of movement plus up and down ? Now i will thinking about this for days !!
Hey Pocket. Just checking in. I hope all is well and I hope to see you soon.
Great work, please post a follow up
wow you can make nice pics with this
sorprendente , gracias .
Very nice.
Use ultra glossy paper and a gel pen for tighter lines brother
Friction causes the "orbit" to decay, but what causes it to precess? Is there some asymmetry in how it swings?
The initial push causes the shape to become (noticeably) elliptical. As for precession, I'm not sure if that would be visible here, but I will tell you this: I spent a few _days_ trying to understand elliptical precession while working on the harmonograph, and I was still confused at the end. After some really intense and weird math, reading, and speculations, I don't think I came to any satisfactory conclusions. I would need to consult a physics professional, but to be honest, I'm a bit skeptical that we understand it entirely. Of course, a harmonograph is an incredibly complex system of physical phenomena, so I will concede that there were plenty of variables/effects that I might not have controlled for.
If you have interest in the subject, I would start with the wiki on the Foucault pendulum. Sounds easy enough at first!
Something to think about. Good question. But it makes me think will it still precess if the initial force applied to the object is exactly perpendicular to the line joining the center (of the whole system) and the point of release? I would want to know whether it will still behave in the same way!
This reminds me of a propeller... Maybe it's an optimal shape to move on 2 planes?
I'm curious why you have a brake rotor
any closer to a finished product?
Thanks so much!
how can i make that gimbal? the measurements
The pendulum seems to have drawn a perfect propeller. That's really interesting. It even has lines representing dimension.
I wonder if that's actually the case; a perfectly aerodynamic propeller probably could be found to have a relationship with some more simple, naturally reproducible phenomenon, just like this. That was a mouthful. Anyhow, I once found this teardrop shape (you can see it at the end of the "drawing machine marker" vid) that resembled an ideal Acheulean hand axe, just by drawing around a circle that was at the end of a beam. Here is my point, and it's an important one:
All things physical, and thus, all forms or patterns, intentionally conceived or otherwise, have a mathematical structure that defines them. You can draw a hand-axe using equations that can be graphed, and those mathematical elements can be captured by simple machines. When you build a machine, you are expressing a mathematical truth, and each part is one of the pieces of that expression.
This is deeply philosophical stuff. Do we define mathematics, or are we just an expression of it?
Good luck out there.
pocket83 My thoughts as well. I wonder if it would be possible to build a program that could interpret the lines into a 3d rendering. The forces of nature always know best, if we just knew how to listen. Thanks for sharing your experiments with us :)
very beautiful
Hi, have you made your harmonograph already?
Album Artwork!
SAY GIMBLE ONE MORE TIME!
this is what you need for your spoon
أكثر من رائع احسنت
beautiful
can u pls make a a video for the pbc gimbal beacouse im doing a project it neeed a gimbal pls make it asap
4:20 wooooooooooooooooooow
I have that exact same gyroscope ._.
Neat
RIP pocket83
700th like
Can you show us yet
lol no dislikes
RAPAZ SUA IDEIA FOI BOA MAS EM OFICINA TEM PIVOR DE ESTABILIZADOR DE CARRO DA SERTINHO COMO USA COM CABO COMO VC E INTELIGENTE NÃO DIFICIL COLOCA ELE E USADO E DE GRAÇA
This came up in the suggested videos on the side. ruclips.net/video/HJYvc-ISrf8/видео.html
G. Dalenoort Yes. One of the more elegant designs. I am a big supporter of that channel.
Harmonograph? Are you some kind of nancy boy or something?
pocket83 So you're the top in your highway rest area encounters.
C'mon. Is that the wittiest thing you can produce? I can't waste my talents on a meat-head such as yourself. At least make me laugh. Telling me I'm a homo in the RUclips comments is hardly pushing the envelope. I'm heterosexual!
I'll give you one more try.
pocket83 I've heard this defense before, I wasn't receiving so I'm not gay.