Industrial servo marble catapult

[@Squibbleses]

The most convoluted circle cutting jig I've ever seen. I love it.

[@matthiasrandomstuff2221]

edge quality isn't great, and plywood would take forever

[@mieguistumas]

@@matthiasrandomstuff2221 Sounds like you're describing most youtube CNCs

[@burprobrox9134]

Hey I was going to say that. Perfectly sensible haha

[@steamer2k319]

You mean axial rail gun.

[@steamer2k319]

Another thought: trebuchet 😈

[@MrBrian-Columbus]

Hear me out: A remake of Home Alone only Kevin defends his home with things Matthias built.

[@dieterjosef]

I assume the guys from DMM didn't know what video they would get but I think they were served really well.

[@performensch]

they know they will get servod well ;)

[@matthiasrandomstuff2221]

They were actually quite happy with the pre-release I showed them. Surprisingly!

[@MrAwawe]

Absolutely wild seeing a motor with both the precision to gently pick up marbles and the power to fling them across the room, all without any springs or rubber bands to store mechanical energy. This is certainly good marketing for them.

[@hoakuroija1089]

How about adding a spring or a rubber band to store energy and get the thing spinning faster

[@MrAwawe]

@@hoakuroija1089 Of course you could do that, and it would make a much more efficient catapult, but it wouldn't show off the capabilities of the motor as well.

[@CitizenAyellowblue]

Thank goodness he's on our side.

[@jasonsmall5602]

"I guess it's a lot bigger than the one in the supply itself" - you think?

[@etcher6841]

Why, I personally never leave the house without my 50cm tall capacitor, you never know when the local nuclear plant might need some temporary storage real quick

[@shurmurray]

It's awesome to see some less serious projects on your channel! I also like playing with tech in non-serious way, it is fun and somehow fills life with a meaning!

[@ericperkins3078]

MATTHIAS!!! You are having WAY too much fun learning and pushing the boundaries of stepper/servo technology.

[@clearlynotLeon]

This is at the same time both terrifying and awesome. Great video!

[@railgap]

I love how well PID control works with servos. Once you've got braking and acceleration dialed in, you could put those marbles through the wall!

[@HainjeDAF]

Just another "I only adult when really necessary" video. Love it.

[@jamesmyname]

Use paintballs and see if you can make some art. Possibilities are endless. Very cool.

[@gregwmanning]

Going back to your roots and its still fun!

[@dougdavidson175]

Woot! Marble mayhem. Nice to see the lads in the shop with Dad. Merry Christmas to you & the family. Take care & stay safe

[@Shockedbywater]

The medical examiner was baffled, they had never seen a home invader killed with marbles.

[@asdqwe4468]

I've been using servos a lot lately. Mostly 400V 3-5kW. They are fun. I used ethercat and industrial PLCs to control them. You can actually control ethercat servo drives with a raspberry pi and codesys.

[@lint2023]

Looking forward to more knowledge on the servos, etc. This was fun and educational.

[@devandestudios128]

You know, I don't know jack about coding, but I keep coming back for more of these vids. Keep up the AWESOME content man. I can't get enough of your beautiful mind.

[@JoseSilveira-newhandleforYT]

Impressive setup! And it's the first time I've seen a servo motor used to throw marbles 🙂

[@dpmakestuff]

My wood lathe has a 220v Servo Spindle Motor and it's a delightful feature. Instant response to torque needs and wide range for speed control. Not sure if the motor you have would be a good fit for that application,.

[@matthiasrandomstuff2221]

It could do that too. But what it can also do is go to positions precisely and quickly, which your lathe motor probably can't do, cause there's no need for it.

[@c0ldc0ne]

That's next year's Christmas presents for the kids sorted.

[@xyzzy7145]

We miss the days of building tools. We understand why. Considering building a robot with these servos, but made out of wood.

[@ValuedTeamMember]

Note to self: Don't show up at the "Matthias house" unannounced If you do, consider sporting a helmet, eye protection and a cup

[@paintsey]

Finally an efficient way to cut cardboard down!

[@Ken-oe3ch]

This is a more entertaining demonstration than the "stepper symphony" videos that play songs from poorly tuned stepper drives. Bravo!

[@kevinmartin7760]

I've found the slow-motion video recording of my phone invaluable for diagnosing misbehaving machinery. If the pocket in the arm is properly shaped you might be able to give the arm a full rotation and a third for more launch speed!

[@matthiasrandomstuff2221]

but that means no self-loading

[@Fuogor]

@@matthiasrandomstuff2221 Perhaps some sort of rudimentary ratchet system or latch could make it so that the gate only opens when the motor is spinning "backwards"/down. Maybe even just a very slight ramp leading up to the actuator on the loading gate? The speeds involved might make things... interesting, though.

[@PeteLewisWoodwork]

Crazy but entertaining - and funny to watch in action.

[@Rickmakes]

DMM: Would you like to demo our servo motor? Matthias: I will build a weapon! 🤣 It crazy how fun it is to propel things quickly.

[@jum5238]

Wait til McCauley Calkin gets ahold of this for Christmas! He'll enjoy being home alone again. And I see at the end of the video that we have some young-un's in training. Mwahahahaha. YESSSS!

[@RandallBoley]

My first thought would be to make the marble cup deep enough to hold the marble at the very bottom position. You could then use the longer arm and accelerate for 180 degrees to the top position. Instead of the immediate stop it could slow just enough to release the marble then use the remaining forward rotation to slow down to the bottom starting position. That deceleration would be much more gentle. The feeder would need a little redesign with a spring catch to allow the arm to pass by then back into it.

[@dakotamax2]

Give the arm a bit of flex and I bet you get higher release velocity. Next, hang some wind chimes in front of it and go on tour with Wintergatan.

[@awldune]

Never grow up Matthias 😄

[@MCsCreations]

Fantastic work, Matthias! It really looks like a LOT of fun! 😃 Stay safe there with your family! 🖖😊

[@antraxxslingshots]

My inner Kid really wants to see this outside in a Snowball battle :D

[@RoboArc]

Way too much weight, need a big ass servo. You need to get the Newtons / inch of the motor in the specs and then change the inches to the lever arm length and then you can get the instant force of the lever end effector 🙃❤

[@billweasley1382]

It might help if you got a bigger capacitor.

[@FrankGraffagnino]

It would be interesting to not limit yourself to 90 degrees of acceleration and instead had a mechanism to hold the marble in until it hit 90+360 degrees of rotation, in which the amount of rotation unlocks the marble to release. Then the rpm would be much higher. Fun video!

[@pipsqueak2009]

That is so much fun.... Would make an excellent stocking filler! Probably not stocking filler money however.

[@DullPoints]

This is a little unhinged and I love it!

[@HannesMrg]

Remember to be very careful around this size of servos. They might not be as loud as powertools and thus not always remind you of it, but they can certainly do a lot of damage to people.

[@NIOC630]

Hey! Since you have a Servo you could just accelerate constantly over multiple revolutions and time it nicely so when approaching max motor rpm the shoot happens by inversing the direction. This way you could go much much faster. Just the auto reloading wont work any more.

[@senorjp21]

You could make a much deeper pocket and spin all the way around once or twice to get to max speed, then decelerate to release. Marble spin launch

[@werma123]

I feel like there's some kind of jointed trebuchet ATM which would let you get more torque by showing the motor to rotate further.

[@d64d64]

Could you get more velocity by accelerating for a full circle before release? If spoon speed can be smoothly increased throughout, it might help to keep the marble in until it's at the right spot again?

[@MrCardeso]

Yer gonna put an eye out with that thing!!

[@Guranga93]

Matthias look up whipper trebuchet, you can get more than 1/3 turn of acceleration if you use the same principal😄

[@ryanjohnson3615]

Would be fun to use these to turn a full size quad bike into a remote control car!

[@regthebackyardjackofalltrades]

Now I’d love to see an electric slingshot. Lol I thought about before I saw the slingshot you made for your children.

[@mattw7949]

Now throwing stars...

[@tonybrock5288]

If you could accelerate the arm before it gets to the marble? That would make it very powerful. Starting from a standing start everytime can't be nearly as quick? The marble feed would need a little work though.

[@matthiasrandomstuff2221]

The beauty of using the motor like this is that it doesn't self destruct like catapults often do. Hitting the marble that stationary on the other hand would cause it to self destruct rather quickly.

[@meetv7700]

Imagine someone tries to break in and gets defeated by a marble throwing servo pi duo.

[@chrism3839]

Couple more cervos, a few lazy Suzan's, and some sensors, and you could make a home defence system.

[@luiseduardo586]

LOL. We never stop being children.We just change our toys.

[@BB1-l2k]

Slingshots firing nuts and bolts for the kids and now a marble catapult. Matthias is preparing for a potential Canadian civil war.

[@ecsyntric]

ths is not random stuff. it belongs on the main channel

[@gabrielespindola4461]

The scarryest part of this vid is all the glass marbles droping on the concrete floor.😂

[@MrBrax]

Incredible

[@Wordsnwood]

Hahaha.. guessing that this was not at all what they had in mind! 😁

[@onjofilms]

Servos are versatile enough you shouldn't have to change settings on the fly. I know because I've worked on them for over 15 yrs in industrial settings. Mainly on a palletizer. (in factories in the US, Russia, and Turkey).

[@matthiasrandomstuff2221]

I needed it to move very gently with low acceleration for the pickup, and the opposite for the throw.

[@kyoopihd]

To get more marble speed, could you modify the spoon such that the marble would stay in place for a full (or several) revolutions of the arm instead of just 120 degrees or whatever that is, giving the motor more of a chance to accelerate closer to its full speed? I was thinking how a hand-powered sling works

[@kyoopihd]

Naturally for testing you would need an impeller-like enclosure so you're not whipping marbles through the ceiling xD

[@furtim1]

" I feel a great swell of pity for the poor soul who comes to that house looking for trouble"

[@MatchaMakesThings]

Thats the biggest capacitor ive ever seen

[@srmofoable]

Coming soon, the next installment in the home alone movie series

[@hairybass480]

Rig it up outside and see how far you can throw a marble! Watch the neighbors cars though. 😂

[@lattakia3812]

Fun. TIL there's a USB to RS232 converter.

[@giantstickerman]

I think you need to design a automated return for the marbles so it can keep going without your assitance. Also, can it be incorporated into one of your marble machines? Have fun! 🙂

[@matthiasrandomstuff2221]

Yes, automatic marble return, and maybe a rotating platform to put some object to be destroyed on, then a timelapse of it running for hours gradually destroying some object of contempt.

[@giantstickerman]

@@matthiasrandomstuff2221 Lol, i'm looking forward to the video already.

[@maxmaix]

Tech Ingredients needs 2 of these motors

[@JosephCenter]

New Halloween candy delivery system for next year???

[@Error42_]

Death by a thousand marbles.

[@69dblcab]

You have built some dangerous toys in the past but I think this is the most dangerous yet. I still enjoyed it. Do you need body armor??

[@paulfrizzell31]

👍great video

[@kevrasx]

I wonder how much force is exerted in that 120° to accelerate a marble to 20m/s? The deceleration force must be greater because it happens almost instantly, even though the mass has left the spoon.

[@matthiasrandomstuff2221]

Deceleration is without the marble, so its easier. Also, deceleration starts before it hits the top. Basically, the lack of accleleration releases the marble

[@iznasen]

Now try the double arm design. Ref. "Optimising a Trebuchet" @Tom Stanton

[@matthiasrandomstuff2221]

and how do you make that self loading?

[@EvgenyPakhomov]

@@matthiasrandomstuff2221 By using significantly more servos.

[@ArranAsh]

Could you have it do multiple revolutions to get up to speed after pickup up the marble and using the centripetal force to stop the marble flying off pre-emptively?

[@nickkropat8857]

Time to make a servo powered Trebuchet to really show those boxes whats up

[@matthiasrandomstuff2221]

Ever seen a self-loading trebucet?

[@CornflakesOriginal]

Could you get more speed by having a longer acceleration (distance wise)? E.g. going 360°? Automatic loading would be difficult though.

[@briantaylor9266]

Do I see a Squirrel Terminator in development here?

[@matthiasrandomstuff2221]

it could certainly smack a mouse before it has a chance to move out of the way.

[@WyvernDotRed]

With a bigger spoon, would it be possible to accelerate the marble for a whole turn, or even longer? That way it should be possible to accelerate an arm of almost any length up to speed fully. It would need a different loading mechanism if you do this manually and a very stable control curve, or good covers. But that could make it properly dangerous and bring the marble up to much greater speeds.

[@matthiasrandomstuff2221]

the problem with going a whole turn is I wouldn't be able to use the pickup lever to trigger marble releases anymore. But I since realized I could go 3/4 of a turn and shoot underhand.

[@davipip]

Getting ready for armageddon 😀

[@eric13hill]

Add a sling

[@Adam-ep8gb]

Its a question if SendCommand is blocking or not. Seems to me that it cannot when you setting accelleration and target position as two separate calls. There should be some listener to block further commands till its in the target place, I guess. Higher sleep times would solve it too.

[@matthiasrandomstuff2221]

Blocking commands until the target is reached would be MUCH more limiting

[@DaveChurchill]

I can't tell if the DMM folks watching this are laughing or crying :D

[@matthiasrandomstuff2221]

surprisingly, they were happy with the preview. Its a good demonstration of the motor's ability. just kind of unprofessional.

[@DaveChurchill]

@@matthiasrandomstuff2221 Definitely a super fun video. I wanna see the follow-up where you get it up to full speed with a latch mechanism to release the marbles

[@The_Woodashians_Corporation]

How fast can you stop? If you can't get enough speed with that lever length ....if 1/4 of a circle is not enough to achieve max speed because acceleration requirement is insane, you could rotate the lever for a full circle + 1/4 of turn. Marble setting would need to be redesigned...maybe make it deeper to resist centripetal force so when the lever stops inertia steps in? :)

[@raimogeel9497]

Can you ever find a more fun way to cut a circle?

[@TheRCAviator]

Good thing you didn't use a flux capacitor. It would be shooting down satellites.

[@vladtepes97]

call jelle right away!

[@thomasvnl]

"only 20 meters per second" like that's not really fast already for a tiny glass marble to come howling your way 😅

[@corvus1238]

How many kids in your household Matthias?

[@user-un7qy1gr4c]

I think 3 total (2 plus Matthias).

[@TheWangbolizhong]

哈哈哈哈👍

[@pressuredup]

OIC ban incoming for this. No fun projectile throwers allowed in Canada.

[@robertbutler4393]

Toys for big boys. 😂

[@Reoddadai]

Hmm, suspicious... Now that Canada is trying to ban guns, Matthias starts developing and building new inventions for self-defense. 😅

[@vasiliigulevich9202]

Hey, slow down. You may never be able to create anything better. People may become disappointed!

[@SweIceMan]

What i wouldn´t give to see a collab between Matthias and Martin over at Wintergatan....

[@henryD9363]

What is this meters pre second elitist nonsense? You should use furlongs per fortnite, like any honest, hard-working, decent person could understand.

[@thalivenom4972]

you can get more speed by preloading the arm, like a cricket hopping. it would force it to build tension, that it has to overcome before it starts its swing. this means it would effectively start at say, 25% and accelerate, rather than zero.