Mechanical multiplexer

Demonstration of a mechanism to drive many degrees of freedom from only two motors, with the constraints that only one motor may be moved at a time, and the position must be quantized to a half-turn when switching axes.
Currently the 7 axes currently do nothing, but it with a complex transmission (most likely bowden cables) it could drive a 6-axis robot with gripper, for example.
STL files available here: www.thingiverse.com/thing:315...

[@thorvaldspear]

When you're trying to keep 7 guys happy at the same time:

[@Cikwnla]

Underrated

[@_monti142]

clever

[@niburya]

bruh

[@ilhamnurhikmat1238]

Wuut

[@hellhoundytb]

Holy crap :)))

[@Unmannedair]

This is very inspirational. You just gave me an idea for how to make a latching mechanism on a tool changer for my 3D printer.

[@michaelsemenchuk3056]

Or 7 extruders.

[@limesta]

@@michaelsemenchuk3056 that's actually a genius application, this would definitely make for a really good direct drive multicolor head

[@danielprovder]

that was the first thing I thought of…

[@catullorampazzo]

My first thought was a homemde blending machine for cocktails. I see we have different priorities.

[@michaelsemenchuk3056]

@@catullorampazzo not really different priorities, but my blending machine for cocktails is my stomach, so ... :D

[@Schwuuuuup]

Nice design, Maybe I'll use it when I finish my long-time-work-in-progress-aka-laying-in-the-basement Cocktail Mixer for having several peristaltic pumps

[@instaboiidsg2117]

I had the same idea 😂😂😂😂😂

[@sturg6199]

Lol same here

[@HumanHiLiteReel]

Bro, I'm making one too. We should collab!

[@AliHSyed]

You guys ever consider using venturis? I use them at work where I install chemical proportioning dispensers. The water pressure creates suction that pulls concentrated chemicals and mixes with the water at a predetermined concentration.

[@Schwuuuuup]

@@AliHSyed you don't want the cocktail ingredients mixed with water, and other media create their own complications. I guess when all you do is to create flavored Rum (or whatever) you could use a venturi to infuse the flavor. I Settled on some kind of siphon effect, I blow compressed air in a bottle to press out the fluid via a tube. Problem is, you can't measure the amount of fluid very well. So I planned to hook up a digital scale. But live happened and the product never went into testing

[@floop93]

This kind of mechanism is used in automatic tool posts with driven tools on some CNC lathes (if I remember correctly doosan have such solution). But diference is that outer ring is moving and shaft is stationary (pointing at fixed working tool position)

[@jamiekawabata7101]

Interesting!

[@user-ij4pz6so3p]

@@jamiekawabata7101 что за херня?

[@user-zy9ul8bh9t]

Вроде всех накормила!🤣

[@RandoWisLuL]

interesting. So the tools rotate and latch into the motor instead of the other way around.

[@floop93]

@@RandoWisLuL Here is how its work: kzbin.info/www/bejne/iH_KdIGHpq-DfNk And here is shown, how its made inside (during repair process) kzbin.info/www/bejne/qH7apaZre92Jl9U

[@ShrKhAan]

So beautiful, and well resolved for reengaging !

[@suspense_comix3237]

This looks cool! I’m so fascinated by these difficult looking mechanical masterpieces

[@tirreg74]

Well done! It took me a w hile to realize how it works. I viewed it in slow motion to understand the individual steps.

[@AhmedAli-qg8xs]

an awesome physical explanation for multiplexers, thanks for the video

[@mtareinzbern5644]

that looks awesome, imagining opening a secret lock with this as key

[@mohammadabedy2478]

the coupling mechanism is so awesome.

[@samayaraj7542]

Really awesome. Fir the first two times, I was bit confused how this is working. It awesome

[@OwenWithAHammer]

This is going to be a major component of my polygen drive, it'll multiplex 2 motors into hundreds of outputs. Thank you for the inspiration, will upload videos of it in the coming months.

[@seakyle8320]

You have not uploaded the video. liar

[@protoborg]

WRONG!!!!! That's not what a multiplexer does. A multiplexer has ONE output and many inputs.

[@OwenWithAHammer]

@@protoborg That's the opposite of a multiplexer, and even then you're wrong. A multiplexer is a machine that converts inputs and energy, into a greater number of outputs. It can have as many inputs and outputs as you want, as long as the ratio is positive. I've designed a continuous mechanical multiplexer, it executes all of its outputs simultaneously and continuously, all at once without any stops. I will hopefully build it soon, sorry for the wait. The trick is, instead of having that input motor (as opposed to the setup motor) directly control the output, you make mechanical memory cells (like a rubics cube with gears), and you send those data cells into a cache, which eventually loads into the execution unit, which essentially writes the data to the outputs. With this you could hypothetically make a 24hz TV out of gears lol.

[@kiwismith8283]

@@OwenWithAHammer Ever build it?

[@TheRainHarvester]

Very cool! Your channel is very unique!

[@cesalab4738]

Esta de lujo tu proyecto, muy interesante la forma en como lo diseñaste, felicidades!!

[@alainmendonca2323]

Thats the coolest thing I have saw lately

[@grupopspropiedades]

Re copado!!! Te felicito!! Esta buenisimo su sistema de transmision.. Genial!!!

[@lucaspolodna2432]

Nice work, Looks very unique

[@ibrahimboul1544]

Fantastic design and implementation 👍

[@jannijp7]

Awesome! So smooth. I'm inspired

[@EliSpizzichino]

Some ideas like this are just pure orgasm... especially when after 20 replay I fail to understand what part is rotating and how. I need to take a closer look at the STL! BTW congrats!!

[@jamiekawabata7101]

Glad you like it! :)

[@TechBuild]

This is so cool!

[@Dialga9187]

this is super cool and I love it

[@bartt7425]

Very smart design!!

[@MrDarkboyangel]

Wow good work, very inspiring

[@taraskirichenko2012]

офигеть! Никогда не видел такой конструкции!

[@adayinthelife5496]

What an awesome idea! And we'll executed.

[@afonsomendes92]

this is beaautiful man thanks!!

[@ahmetmutlu348]

To he system also locks line seems useful for operating on robotic system where there is not enough space to add more motors. Add a bendable transmission line for each line and you can place each moving unit anywhere.

[@fredriko.zachrisson9711]

Super cool. Nice work

[@ganeshmirajkar]

excellent stepping control

[@makertheory3390]

I've been trying to sketch up a mechanical multiplexer off and on for several YEARS! This is the first time I see one that is actually working! Great idea and great execution!

[@nathanielhartsuff2336]

Wow this would be really neat for something like a hobby shop.

[@gregfridholm2136]

Perfect. This will probably help my ME teammate better understand the analog mux I was trying to explain.

[@lucianomaia9460]

Awesome dude, simply awesome

[@FIXDIY]

Awesome diy projects

[@albertli7717]

Good Idea, I like it !

[@PaulPassarelli]

And the answer is: This gesture summarizes all the money the studio will save remaking the old mechanical Jeopardy board! Question: What are two thumbs up?

[@StrangeTerror]

What is a good sign?

[@nelsonluis9101]

Muy educativo y didáctico me gustaría que todos los chicos de básica aprendieran más del tema relacionado con la mecánica material excelente

[@slavikrogozins691]

This is very inspirational.

[@AndrewAHayes]

This is my kind of thing!!!

[@OnceShy_TwiceBitten]

See top comment...

[@mehmetonurbostanci6451]

Good job bro👏🏻

[@kritpitako]

good design for the application

[@sethg6157]

It looks really neat! What kind of applications are their for such a device?

[@CuriousChan]

This is similar to a lone bartender having several customers😅

[@Projetsoft]

Très bonne idée Bravo

[@ramirojimenezcordero]

¡Me has sorprendido!

[@dirk1251]

cool stuff bro

[@demonikidoff4613]

Heyy dats pretty gooood !

[@shyleshsrinivasan5092]

Fascinating !

[@espenbgh2540]

elegant solution.

[@greenavoy4148]

Nice. I had this in mind. So you a mind reader 🥰 As an example, flexible shafts will bring you to flex environment (in my case that where assembly machine for box package) with control like Lego EV3 system. In theory solid tech solution 📐

[@talgtalga3767]

hello... i didnt understand where i can use this system?

[@padmalayarawal3091]

Loved it✌😁

[@davidking7956]

This, with some 3d printed peristaltic pumps, with a raspberry pi for garden automation would be awesome

[@bobfrancis1016]

Damn that's sick and theoretically could be infinite

[@moosesnWoop]

beautiful

[@JuulCPH]

Very cool. You could make that with a single motor as well, with one direction acting as the axis selector but then you'd need to split each axis in two based on direction of rotation.

[@jamiekawabata7101]

Interesting idea!

[@roperover3288]

Nice idea

[@jacobdavidcunningham1440]

that's really cool

[@TheChirantanKansara]

How do you align the chucks so fast?

[@natejack2292]

I designed/made a lego mindstorms 'multiplexer' that used 1 motor to fire/raise/drop a lego cannon. The other two motors were dedicated to driving/steering. The multiplexer used a differential gear box and two ratchet mechanisms so that if the drive shaft turned one way, it would power one gear that fired the gun. If the drive shaft turned the other direction, it would raise the cannon until eventually it would reach a threshold and fall back to its lowest position.

[@protoborg]

That's NOT A FUCKING MULTIPLEXER!!! A multiplexer takes multiple inputs and produces a SINGLE output.

[@alejandrocastro211]

This is awesome. The only drawback I see is that the turns of each rotor must always be multiples of 1/2 turn. But I suppose that in a practical application this could be accompanied by reduction gears that adapt the movement to this situation. Great invention.

[@jamiekawabata7101]

Yes, it is a drawback. I had tried to think of a mechanism that would allow finer increments, but none of my ideas seemed like they would work.

[@daviddrake60]

@@jamiekawabata7101 What you have made is, let's face it, beautiful. Perhaps the channel on each of the 7 axes, that the main drive connector slides into, could be made into a 'cross roads' for 90 degree turn precision. So where the channel is a '-' you could have a '+'. I suspect that for increasing precision of a motion on each of the 7 axes what you might do is some gearing reduction further on in the motion.

[@hobbycollector]

i dont know what is the use for this. But i love the mechanics! Beautiful

[@chengguanteo9080]

This is 1 possible application

[@Revision369]

this is so cool

[@AbdullohibnAlisher]

Amazing! 👍

[@Miniatures-And-More]

Superb !

[@amateurcarolina]

Why would anyone vote this down? This is novel, I'm impressed!

[@user-bg9fm1cb4n]

Непонятно ничего, но посмотрел. Залипательно

[@humanspirit3432]

Cool! : D Really cool! : D

[@michaelschecker2716]

Cool idea ! I think on dosing color ink and 2k epoxy resin

[@saint7412369]

That's amazing.

[@PhG1961]

Amazing !

[@gregfeneis609]

Very cool! With a few mods like some detents a ball plunger,, etc., the steering motor could be reduced to solenoids

[@jamiekawabata7101]

Interesting! Yes, I think that would be possible.

[@ASCENDANTGAMERSAGE]

Is this useful? It looks like the outputs have to be aligned a specific way to change outputs.

[@Jasoninee]

Yes it definitely would be useful and your concern is highlighted in the description. The outputs are pretty much stepper motors, but with half turn resolution.

[@andrewhunter2520]

incredible

[@EvilBrit89]

Imagine this on an X Y Z axis for drilling sheet metals at different lengths.. you could probably even change heads on the fly

[@paranoidyoshman]

Looks pretty cool, although, isn't it a "de-multiplexer" instead?

[@AhmadAboulFarag]

Exactly that's what I thought as well....multiplexer turns multiple inputs into one output, de-multiplexer does what this is doing...one input into multiple output

[@jamiekawabata7101]

Ha! I think you're right! Oops

[@Jasoninee]

@@AhmadAboulFarag Technicaly if you think about it the solution is multiplexing instructions to solve a problem. Example: Operator originally wanted to control 7 motors. This would have been 7 separate commands sent out. Now they only use 2 commands to control all 7. Commanding 7 threads was multiplexed into 2 threads. Mulitplexing seems like the correct description. I see how the machine's actual "nature" is decoding what was multiplexed (demultiplexing), but I kinda like the idea that since it allowed the operator to multiplex.. it is therefore a multiplexer

[@henrycheny2414]

hi what 3d printer are you using? how to handle the printer error? Thank you !

[@seb_thoms]

Are the rotating parts held into place after turning?

[@MiniCasaBrasileira]

i was wondermg if can used that some how to make a automatic toll change to cnc router

[@danielsLL]

mind blower TY

[@wingman358]

That's great. Now what to build with it?

[@vivekyadav]

Love it ❤️

[@1am228]

When there is 7 beds but only 1 table fan

[@ashimbiswas323]

Very important way at increase.

[@sveinmalvin]

That is simply AWSOME!! 👍👍👍👍

[@DJ_Force]

I think this is actually a de-multiplexer. Still, very cool.

[@onuralagoz6531]

it is both :D the step motor drivers are muxers in that case since they get input of 7 motors to be operated and drive 2 motors instead. And mechanical part is demuxing the output

[@Ken-nv2hl]

Technically it's actually a mechanical demultiplexer. As a Demultiplexer is a combinational logic circuit designed to switch one common input line to one of several seperate output line

[@calculator4482]

Yep. I was thinking the same thing

[@electronash]

This looks ideal for the pumps in a robot bartender. lol

[@ValmisFilm]

cool. What would you use in practice for?

[@Lucas-rl1wt]

- CONECTALO CONECTALO - El televisor o el multiplexor? - LA TELE

[@44mod]

What drivers are you using. The board and what code?

[@pierreolivier7022]

Bon boulot.

[@MegaScience]

♥️♥️♥️🙂🙂👍🏻

[@BHARGAV_GAJJAR]

Very cool

[@marcetigreshark]

amazing

[@josephgreenfield]

this reminds me off r2d2

[@prithvirajnaik3779]

with a clever design, you can use this for colourful PLA printing

[@NathanK97]

Now do a hydrolic one, one massive tank, one pump, a few solenoid valves to switch between different actuators

[@Tigrou7777]

What happen if the first step motor who drive the load get unsynced after a while (it does not stop at the right place) and then the second step motor decide move the ring ?

[@bastienpabiot3678]

it jams or break, if no security is created

[@jamiekawabata7101]

Yes, this would be a problem. The system design would need ensure the loads are low enough that the motor always has enough torque and never skips steps.

[@tanalson]

Imagine you use this kind of lock mechanism for your safe

[@piotrstelle617]

super pomysł głowa pracuje