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General Project Discussion / Re: wierd crank and lever transmission
« Last post by HS on Today at 05:07:15 am »
Alright, maybe this is a better description of what I was thinking before. See what you make of this.

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I also figured out how to do it with hinges! The trick is to have them at 90 degrees to each other.

https://www.youtube.com/watch?v=rEyr10Lw644&ab_channel=HS
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General Project Discussion / Re: wierd crank and lever transmission
« Last post by MagnusWootton on June 23, 2021, 10:23:26 pm »
I could just allow for an arc,  instead of side to side travel, and maybe itll still work?
Its definitely a better machine if I get rid of those barriers.   So I think I will change it,  not sure what its going to be yet tho for certain.



One thing to add, the longer that "barrier lever" is,  the less error there is, because it would be changing angle less. So if u made it a long one, it would have less error, but it would take up more estate.
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General Project Discussion / Re: wierd crank and lever transmission
« Last post by MagnusWootton on June 23, 2021, 10:11:55 pm »
Nice brainstorming.

I think itll make it more simple, not more complicated.  Its more unified if the whole thing rotated.

Problems always look impossible at first,  but there only needs to be 1 way to do it out of a million and its still possible.
Its cool you got the cardboard out for some simulation,  thats all basicly the computer is. :)



It would be a better machine if it did get rid of the sliding,  I had a look at your diagrams but I couldn't see how it could work yet,   but maybe I will look into this for the next couple of days,  getting the whole thing rid of the sliding would make a lot of sense in the printing + casting as well, because it wont have two bodies right up against each other, which wouldn't print that well.    Maybe it requires 2 moulds,  one for an underplane and barriers, and the next mould fits in which has the segments.

If somehow that piston got to constrain to left and right movement only, without the barriers, it would be a better design by alot.  fabbin' have less proximal entities and it working better with no friction.

Could you draw onto my picture your modification -  then I might be able to recognize it.
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General Project Discussion / Re: wierd crank and lever transmission
« Last post by HS on June 23, 2021, 09:34:54 pm »
I was having adventures in hinge-land, let me tell you...  ;D Tried out all sorts of combinations, but always ended up with ''slightly'' too many degrees of freedom.

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Eventually I had to admit defeat. But! While working with the cardboard I noticed that a pure leaf-spring, or hinge and spring arrangement might actually work.

20210623-130705" border="0

Adding springs or just making use of the elasticity of the plastic would keep the energy in the system, so the oscillator might run easier with that than with pistons. Of course that would make the mechanism more complicated, but it's a possible way forward in case there's too much friction. Happy inventing!

20210623-131230" border="0
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General Project Discussion / Re: wierd crank and lever transmission
« Last post by MagnusWootton on June 23, 2021, 03:04:12 pm »
I've been thinking the friction from all those connectors sliding through their slots (if that's your plan) might add up. If there's too much resistance, maybe you could make the translating movement guides out of living hinges too?

Thanks for the help.
Yes, its half translational half rotational.  it does slide (pistons) as well as bend.(cranks)   I do have a brittle design thats very similar to make out of even concrete maybe, but the one I'm going to put together first is going to be flexable, with the living hinges.

I'm worried about friction too,  if its 20kilohertz or more it could burn itself out really easily maybe!   So I was thinking maybe I run it in coolant liquid, might help?  Ill get to that issue once its printed.   Then I give it water dynamics on the shape of the levers to help it cut through the liquid easier.
If you use a lubricant to cool it,  it could also help the sliding bits as well.

I'm not sure how movement guides could be living hinges - wouldn't that only be for rotational -  can u draw a picture to illustrate your idea?  (I think we should all help each other,  sharing is caring! :)::)

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General Project Discussion / Re: wierd crank and lever transmission
« Last post by HS on June 23, 2021, 02:59:29 pm »
I've been thinking the friction from all those connectors sliding through their slots (if that's your plan) might add up. If there's too much resistance, maybe you could make the translating movement guides out of living hinges too?
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General Project Discussion / Re: wierd crank and lever transmission
« Last post by MagnusWootton on June 23, 2021, 09:53:54 am »
Is this a device that extracts tons of free energy from the combination of slow motors and then lets it stay stored in a loop back in that further combines, sort of like cells or fire when given air, fuel, and heat will self-propel itself? What if it makes the planet catch fire?

:p

You can do the same thing with cogs, I was just trying to be original.
Its just levers connecting to levers in a formation that makes it go faster and faster,  because I need to get a computer-like hz, for a castable plastic computer.   It only has 1 motor required, on the first lever.     For it to go faster and faster it takes more and more effort for the motor to move it all,  thats why it gets smaller and smaller to counteract this, like a fractal.   The computer logic elements are only a millimetre in size (they connect onto the small end of this device),  and the rotational stroke is only 1/4 millimetre, or maybe even 1/8 of a millimetre in this, because it only goes 90 degrees not 180 degrees.

But whats the point of it!!!   Im going to run a mechanical asic with it.
Heres a picture of my logic element,  which is a subtractor,  and I can do any logical program, with just a reordering of this single repeating element->



This logic element is a millimetre (very small millatech),  but the stroke is actually even less than that.
The smaller the logic piece is physically, the faster it is going to be able to go,  my guess.

The +1/2  and -1/2 bias makes it work with signed additions/subtractions,   its the analogue equivilent of 2s complement,  I just subtract the halfway point each time, and it has positive and negative numbers enabled.

Ill be printing it out in a couple of days,  on my anycubic photon, but I've got a bit of theory I'm going to finish before I do so.

Ill be posting it here when I get it done, for the ultimate demonstration! :)
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General Project Discussion / Re: wierd crank and lever transmission
« Last post by LOCKSUIT on June 23, 2021, 02:18:33 am »
Is this a device that extracts tons of free energy from the combination of slow motors and then lets it stay stored in a loop back in that further combines, sort of like cells or fire when given air, fuel, and heat will self-propel itself? What if it makes the planet catch fire?

:p
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PPL all think you cant optimize nearest neighbour past looking at every element in the memory, for every access element, before you can have a solution.
But I have a possible solution (I havent coded it yet tho...) but it has to be photo keys (graphical keys) and it only finds the nearest neighbour not below it.

Its a big winner,  and ppl will be helped alot by knowing this.

So it goes like this->
    * form a mipped power of 2 heirarchy of averagations of the final photo patches,  and do this also to the photos your using to access the content addressable memory.

  * then you access blurry first,  and each level, you take off all the keys that werent the highest scoring, for each access.   Then you dont need to access all the high resolution keys, if the blurry ones didnt also match the highest on their tiers.

So that way, it is after all simply spacially dividable to do it,  and its not insane genius.     Also It'll get an amazing video tracker to work, maybe even on an arduino!
It could work on general data keys,  but it has to be true to a blur, if it works or not, then its ok to try on anything.

Because neural networks are very similar to KNN,  it also optimizes them as well,  this is quite a dangerous thing if its true.    heheh.
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General Project Discussion / Re: wierd crank and lever transmission
« Last post by MagnusWootton on June 21, 2021, 08:46:02 am »
I fixed it,   its fully working now.  The video cant bring it back below the 4th or so level,  its going too fast for it to play it back properly,   if the first stage is 1 hert, the final stage here (18th) is 200kilohertz,  but I dont know if itll translate to real life or not,  I have to print it out and see.
https://www.youtube.com/watch?v=dZbGCmToe1U

I had a few fixes to do,   its the same as any other programming except Im not very good at open-s-cad script, plus its all slightly new all through it, IDE wise, I had change the rotational stroke from 180 to 90,  and had to fix a few problems,  it has to be lined up perfectly, to keep rotational stroke constant as it goes along.

This is true to inverse kinematics,  and now its only going 90 degrees left to right, it probably wont jackknife or kink,  so its a good sim for a reality check...  I have to do it all again now (Only 1 more time.) and this time make it a single flat entity connected by living hinges.  (Which makes it easily castable!)   Im going to try starch+glycerine, to construct it,   but that will make it pretty weak,  might still work,    if that works it means it costs very little to pay for the liquid to constitute it.

So hopefully in a couple more days,  Ill have it done and my printer is ready to go as soon as I get it finished,  and Ill see how fast I can get mechanical movement!   Maybe electricity isnt so superior as I and many others are thinking!      If I reduce the scale of the machine as it goes faster and faster,  It may make high hertz possible,  and mechanical video games and general logic is faster than I was thinking! but I have to see to know!
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