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This is Dom.

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He's a friendly little robot

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that's super good at only one thing.

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Setting up a butt-ton of dominos

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really really fast.

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It's taken five years to get to this point

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but according to our initial tests,

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we have hopes that he might be more than

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ten times faster than the fastest human.

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So today we're gonna put him to the test

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going head to head against he world's

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foremost domino expert,

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who unfortunately is a mere human.

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Then we're gonna attempt a

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Guinness world record and he's gonna try

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and fill this entire warehouse

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with a mural

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of a hundred thousand dominos.

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And for context, setting up a domino mural

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that size would take a team of seven

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skilled builders one full week.

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Dom here, is gonna attempt to do it

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by himself in 24 hours.

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Now I know what you're thinking,

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"Big whoop Mark,"

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because as a kid you might have had a toy

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that looked like this.

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Or even this custom robot

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KiwiCo made me that can drop

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twenty dominos in a row.

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So isn't a bit overkill to utilize

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an autonomous robot,

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a half mile of Hot Wheels tracks,

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and a high speed robotic arm?

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And I get it because our designs

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look like this where we were just trying

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to hack a Roomba when we first tried to

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tackle this problem

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exactly five years ago.

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But then pesky details with scale arise

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like for starters, just how much

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100,000 dominos is.

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So the robot will need to come and reload

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at least 1,000 times.

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But how exactly do you reload it?

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And how would it know exactly where

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to drop each domino and what color

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it should be?

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And how do you make it so reliable,

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that it doesn't screw up once

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in a 100,000 drops of a domino?

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A system to reliably tackle issues

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at scales like this is just going to be

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inherently super complex.

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Like ten times more complex

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than my automatic bullseye dartboard,

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which to this point was probably the most

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complicated build on my channel.

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So after failing off and on

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for three years,

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I was doing a Q and A at Makerfaire

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and I told the crowd if anyone wanted

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to help me with the brutal challenge

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to hit me up afterwards.

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And to my absolute delight,

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two freshmen from Stanford

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and a software engineer from

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The Bay Area,

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all took me up on the challenge.

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So I hired them and two years later,

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here we were.

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Now before I show you how it all works,

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I just wanted to put him in a head to head

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competition to see how good he really was.

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And for that we need the undisputed

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heavyweight champion on YouTube

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for all things dominos,

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Lily Hevesh.

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Lily, you are known on YouTube as

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The Queen of Dominos right?

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People do call me The Domino Queen.

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And for very good reason,

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with over 1.2 billion views on

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her channel,

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you've almost certainly seen

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one of her incredible creations

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over her 12 years on the platform.

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She's so good,

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she's even got her own line of dominos

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you can buy in stores.

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Ok, so here's the challenge Lily.

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I want you to set up like 300 dominos

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right now and let's see how long it takes

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a human to do that.

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Ok.

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Clock starts,

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Now.

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I got to do two hands.

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If you need me, Lily,

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just sitting here reading my newspaper.

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For you kids at home a newspaper is like

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a boring ipad made from trees.

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That's actually pretty fast.

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Oh no.

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Disaster, the foibles of being human.

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Ok Lily are ready for this?

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No.

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I've seen enough.

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(Failure to whistle)

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I actually don't know how to whistle.

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This, is the Dominator.

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Oh my god

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Wow

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I love the eyes.

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A good set of googly eyes will go

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a long ways.

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Ok boy, let em down.

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I suck at dominos, Lily,

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but i'm good at engineering which means

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I'm actually really good at dominos.

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We even showed off

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the Dominator doubled-stacked

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the middle row for you.

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That is impressive,

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that is seriously impressive.

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This technique of laying down

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a tile of 300 dominos at once

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was really the key that helped us crack

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the scale and reliability issues.

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And its probably my favorite part about

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the Dominator,

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besides his wiggly tail of course.

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Here's Josh to explain more.

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So these 3D printed funnels here,

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which allow us to drop all 300 dominos

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all at once.

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And the mechanism that drops those into

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the top of this tray

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we'll show that in just a second.

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And if we remove these funnels here

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we can see that the dominos are

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precisely placed in their locations.

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This allows us to place 300 dominos

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exactly where we want them all at once.

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And they don't fall out because of what we

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call the Connect 4 mechanism under here.

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But if we trigger the servo,

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then it slides that Connect 4 tray over

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and drops them all at once

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making for some gratuitous, beautiful

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slow-mo shots.

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And so while this looks very cool,

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obviously dropping from that height

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wouldn't be effective.

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So we lower the whole platform down

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on this ball screw.

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Then set them right on the floor,

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which turned out to be incredibly reliable

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So Dom took the W in round one.

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But now it's time for the endurance round.

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Ok, first one to 10,000 dominos wins.

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Lily, you ready?

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I'm ready.

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Dominator, you ready?

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Start

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Oh my god

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Wow

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I aready failed.

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That's great.

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And to Lily's credit,

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she was actually insanely fast.

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Just not, you know, robot fast.

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So unfair,

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so unfair.

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On top of that she had to handle a very

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large distraction with emotional maturity

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of a 9 year old.

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Yep, I think I'm doing pretty good.

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You're doing very good for a human

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I'll give you that.

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Oh no

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Woah

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No what, no what Lily?

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Get out, Get out

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Aaaaaahhh

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That feels so much faster than

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it probably looks.

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How's Lily doing?

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Tired.

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And so while Lily's output slowed down

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considerably,

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Dom's did not.

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And I should mention we sometimes call him

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Dom but that's just short for his

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legal birth name,

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which as noted before,

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is Dominator.

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Cause you know like

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domino

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Dominator

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whatever, it all works.

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I'm gonna head to the bathroom.

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Oh, Lily has to go to the bathroom.

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I'm human, right?

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Dominator do you have to go

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to the bathroom?

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Didn't think so.

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9,000 perfectly laid dominos in a little

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over two hours.

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Actually 9,000 and 1,

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we got a bonus domino out there in

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the middle of this field.

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May or may not have been on purpose,

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but now we can say that it's over 9,000.

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It was a pretty clear result

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and Lily, of course, was gracious

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in her defeat to the machine overlords.

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So all that was left to do now,

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was to knock em down.

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Yes! That was satisfying.

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So we went head to head with

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the world's foremost domino expert

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and came out on top.

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And now it's time for the real challenge.

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To attempt a Guinness World Record,

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and see how quickly we can fill

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this entire room with a mural,

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of over 100,000 dominos.

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Alright buddy,

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you got the game plan,

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now you just got to get out there

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and execute.

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Godspeed little fella, Godspeed.

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300 dominos down, 102,000 left to go.

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So we're about six hours in

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but more importantly,

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We just got our first Goomba.

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It's beautiful.

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Back to work Dom.

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And the best part of working

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really hard for a few years,

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is that the last 24 hours

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are super relaxing.

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And with that tile placed,

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we are officially half way done.

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With over 50,000 dominos put down,

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and just a little over 12 hours.

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And Dom, woah easy boy,

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just showing no signs of slowing down.

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So this is a good point

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to explain the rest of the robotics system

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It all starts over here

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with the loading station that

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Josh and John Luke spent a lot

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of time optimizing.

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The dominos are loaded by color

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on these conveyer belts

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and then a Kuka robot arm

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grabs them and places them in one of

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300 loading shoots made from 2.7 miles

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worth of Hot Wheels tracks.

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And you could load Dom directly

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with the robot arm,

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but this is much faster because he doesn't

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have to wait,

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he just comes in here to the

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docking station and the lower

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platform slides over so the bottem

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layer of 300 dominos gets loaded up

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all at once.

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And we also had a back up loading system

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using a tray just incase at any point

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the robot arm wasn't working.

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Besides the Hot Wheels tracks,

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there's a ton of 3D printed parts

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throughout the build that we either

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printed ourselves or, if we were in

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a pinch, my friends at MatterHackers

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helped us out.

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So that's the loader,

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now how about the Dominator himself?

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How does Dom know exactly where to go

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00:09:27,391 --> 00:09:28,867
in the room to drop a domino?

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So we preprogramed the route for

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all 102,000 dominos.

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So the robot knows exactly where to go

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right from the start.

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Then as we're driving around,

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we use these indoor GPS sensors

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to track the position of the robot

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so it knows roughly where it is

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and then as we get closer the place

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where the dominos need to drop,

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we use these IR cameras that are

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tracking markers on the ground to make

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sure the robot lines up perfectly

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00:09:48,337 --> 00:09:49,357
every single time.

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So the vision from the beginning was that

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we could set Dom up

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00:09:51,603 --> 00:09:53,063
we could turn off the lights and leave,

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and come back the next morning

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and you've got like a full field

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00:09:55,654 --> 00:09:56,535
of dominos set up.

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He could work all night in the dark

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just fine.

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Alright now how bout these

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00:09:59,120 --> 00:10:00,123
super cool wheels?

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00:10:00,123 --> 00:10:01,585
So these are called omni-wheels

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00:10:01,585 --> 00:10:03,025
and they're awesome because they let you

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00:10:03,025 --> 00:10:04,369
translate it any direction you want.

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So this is way better than like your car

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where if you need to move a little bit

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to the left or right,

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00:10:09,037 --> 00:10:10,812
you have to make like a five point turn.

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00:10:10,812 --> 00:10:12,173
So with these guys you can move any

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direction you want to adjust for small

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00:10:13,691 --> 00:10:14,907
corrections in the placement

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00:10:14,907 --> 00:10:15,497
of the dominos.

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These wheels are powered by these

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00:10:16,927 --> 00:10:18,719
clear path, brushless DC server motors.

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00:10:18,719 --> 00:10:20,332
These are like the gold standard in terms

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00:10:20,332 --> 00:10:21,497
of speed and accuracy.

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00:10:21,497 --> 00:10:22,790
And they allow us to slide the robot

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00:10:22,790 --> 00:10:24,274
around by even just a couple millimeters

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00:10:24,274 --> 00:10:24,885
a time,

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00:10:24,885 --> 00:10:26,503
which is super useful when we're trying

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00:10:26,503 --> 00:10:27,566
to make real fine adjustments for placing

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00:10:27,566 --> 00:10:28,495
the dominos down.

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00:10:28,495 --> 00:10:30,677
Now obviously that's just the uppermost

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00:10:30,677 --> 00:10:32,407
tip of the iceberg tip.

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00:10:32,407 --> 00:10:35,072
But Dom's brain is over 14,000 lines

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00:10:35,072 --> 00:10:36,400
of code all from scratch.

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00:10:36,400 --> 00:10:37,726
So if you want to go way deeper into

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00:10:37,726 --> 00:10:38,830
the technical details I'll

335
00:10:38,830 --> 00:10:40,283
put a link in the video's description,

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00:10:40,283 --> 00:10:41,621
where I'll just put it all in one spot.

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00:10:41,621 --> 00:10:43,501
Now back to finishing the second half.

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00:11:14,332 --> 00:11:16,229
So the Dominator has been running

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00:11:16,229 --> 00:11:17,924
just under 24 hours.

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00:11:17,924 --> 00:11:20,605
And this is a bit of a momentous tile here

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00:11:24,265 --> 00:11:26,187
It's a me Mario.

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00:11:31,893 --> 00:11:36,135
102,300 dominos are on the floor

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00:11:36,135 --> 00:11:37,023
succesfully.

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00:11:37,023 --> 00:11:39,200
This is the last 300.

345
00:11:39,200 --> 00:11:41,399
I think this is a moment.

346
00:11:41,399 --> 00:11:43,238
You guys get back over here.

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00:11:43,238 --> 00:11:46,173
Josh and Alex, let's observe it.

348
00:11:46,173 --> 00:11:48,658
Don't blow this Dom, you got it buddy

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00:11:48,658 --> 00:11:49,712
finish strong.

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00:12:00,287 --> 00:12:01,282
We got it.

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00:12:01,282 --> 00:12:03,780
Just over 24 hours,

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00:12:03,780 --> 00:12:05,564
to lay all the dominos.

353
00:12:05,564 --> 00:12:06,833
Gentlemen

354
00:12:08,447 --> 00:12:10,840
It feels really fulfilling as an engineer

355
00:12:10,840 --> 00:12:12,872
to see the design prosses yield results

356
00:12:12,872 --> 00:12:13,542
like this.

357
00:12:13,542 --> 00:12:15,025
And speaking of the engineering

358
00:12:15,025 --> 00:12:16,051
design prosses,

359
00:12:16,051 --> 00:12:18,175
my month long creative engineering course

360
00:12:18,175 --> 00:12:19,709
where I teach this process,

361
00:12:19,709 --> 00:12:21,472
and where you watch me make three builds

362
00:12:21,472 --> 00:12:22,601
from scratch, and you make

363
00:12:22,601 --> 00:12:24,137
three creative builds of your own.

364
00:12:24,137 --> 00:12:26,123
Is once again open for enrollment for

365
00:12:26,123 --> 00:12:28,228
a bonus Summer session right now.

366
00:12:28,228 --> 00:12:29,168
So go to

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00:12:29,168 --> 00:12:29,904
monthly.com/markrober

368
00:12:29,904 --> 00:12:31,911
or use the link in the video description.

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00:12:31,911 --> 00:12:33,287
And I'll see you in class.

370
00:12:33,287 --> 00:12:34,736
So now with everything set up,

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00:12:34,736 --> 00:12:37,039
the final step was to knock em down.

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00:12:37,039 --> 00:12:38,549
You can see John loading in the Mario

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00:12:38,549 --> 00:12:40,032
pipes because they were going to be our

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00:12:40,032 --> 00:12:40,895
trigger mechanism.

375
00:12:40,895 --> 00:12:42,431
The way that works is we've got four

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00:12:42,431 --> 00:12:43,974
Hot Wheels cars glued to the bottom of

377
00:12:43,974 --> 00:12:45,846
this platform that rides in these

378
00:12:45,846 --> 00:12:47,665
parallel Hot Wheels tracks.

379
00:12:47,665 --> 00:12:49,844
Then you slap a green sliding shell on top,

380
00:12:49,844 --> 00:12:51,065
and a motor at the end

381
00:12:51,065 --> 00:12:52,635
pulls the cart along the tracks with

382
00:12:52,635 --> 00:12:53,113
a string.

383
00:12:53,113 --> 00:12:54,850
Then the shell contacts the lever arm

384
00:12:54,850 --> 00:12:56,238
at each pipe like this,

385
00:12:56,238 --> 00:12:57,723
which causes them to roll forward

386
00:12:57,723 --> 00:13:00,007
down the ramp hopefully into the dominos.

387
00:13:00,007 --> 00:13:01,260
Ok now I'm nervous.

388
00:13:02,388 --> 00:13:05,008
I wasn't nervous, now I'm nervous.

389
00:13:05,008 --> 00:13:05,872
OK

390
00:13:05,872 --> 00:13:06,827
3

391
00:13:06,827 --> 00:13:07,696
2

392
00:13:07,696 --> 00:13:08,742
1

393
00:13:08,742 --> 00:13:09,655
Go

394
00:13:14,695 --> 00:13:15,791
Yes! Two!

395
00:13:16,922 --> 00:13:17,977
Three!

396
00:13:19,491 --> 00:13:20,686
Four!

397
00:13:21,373 --> 00:13:22,341
Five!

398
00:13:28,591 --> 00:13:30,389
Oh my gosh

399
00:13:42,357 --> 00:13:45,271
Got em wooo!

400
00:13:45,271 --> 00:13:46,308
Yes!

401
00:13:46,308 --> 00:13:47,619
Awesome!

402
00:13:49,192 --> 00:13:50,480
Holy cow!

403
00:13:51,141 --> 00:13:53,539
Wooooaaah!

404
00:13:54,063 --> 00:13:55,659
Oh my gosh

405
00:13:56,938 --> 00:13:59,173
And in the end Dom was 50 times faster

406
00:13:59,173 --> 00:14:00,748
than the skilled domino builder

407
00:14:00,748 --> 00:14:02,179
and he got himself a world record

408
00:14:02,179 --> 00:14:02,985
to show for it.

409
00:14:02,985 --> 00:14:04,706
Although to be fair to us organisms,

410
00:14:04,706 --> 00:14:06,517
It was in the non-human category.

411
00:14:06,517 --> 00:14:08,420
And at that point after five years,

412
00:14:08,420 --> 00:14:09,845
we were just so relieved to be done,

413
00:14:09,845 --> 00:14:11,262
we got a little carried away carried away

414
00:14:11,262 --> 00:14:12,673
celebrating the champ with

415
00:14:12,673 --> 00:14:14,071
an appropriate sendoff.

416
00:14:22,934 --> 00:14:24,814
Six year old me would be so stoked

417
00:14:24,814 --> 00:14:26,590
to know that I would eventually build

418
00:14:26,590 --> 00:14:28,555
a robot that could set up all the dominos

419
00:14:28,555 --> 00:14:29,281
for me.

420
00:14:29,281 --> 00:14:31,170
So if you want the same feeling of making

421
00:14:31,170 --> 00:14:33,147
things with your hands to do cool things,

422
00:14:33,147 --> 00:14:35,020
but you don't want to wait 35 years.

423
00:14:35,020 --> 00:14:36,884
Then my friends at KiwiCo have got

424
00:14:36,884 --> 00:14:37,842
the answer.

425
00:14:37,842 --> 00:14:40,637
In fact, this is an actual mini version

426
00:14:40,637 --> 00:14:43,047
of the Dom I designed together with them

427
00:14:43,047 --> 00:14:44,455
just for this video.

428
00:14:44,455 --> 00:14:47,570
I mean how awesome and adorable is that.

429
00:14:47,570 --> 00:14:48,953
He's like the protégé.

430
00:14:48,953 --> 00:14:50,287
The Dom Jr.

431
00:14:50,287 --> 00:14:52,038
They got an incredible team of designers

432
00:14:52,038 --> 00:14:54,037
that work on each project and honestly

433
00:14:54,037 --> 00:14:55,649
if I wasn't making YouTube videos

434
00:14:55,649 --> 00:14:57,427
I think I would apply to be on their team.

435
00:14:57,427 --> 00:14:59,512
Then all the concepts are contested

436
00:14:59,512 --> 00:15:01,271
and then its delivered right to your door

437
00:15:01,271 --> 00:15:01,995
every month,

438
00:15:01,995 --> 00:15:03,669
so you can foster your creativity

439
00:15:03,669 --> 00:15:05,452
and make your abilities in a fun

440
00:15:05,452 --> 00:15:06,223
and natural way.

441
00:15:06,223 --> 00:15:08,135
So for example this domino machine box,

442
00:15:08,135 --> 00:15:09,499
inside you've got all the supplies

443
00:15:09,499 --> 00:15:10,646
you need to put it together.

444
00:15:10,646 --> 00:15:12,275
You've got simple instructions.

445
00:15:12,275 --> 00:15:13,719
And then a booklet with more info

446
00:15:13,719 --> 00:15:16,032
like a Q and A with someone you might know.

447
00:15:16,032 --> 00:15:17,782
And this is the tinker crate line

448
00:15:17,782 --> 00:15:19,256
But they've got eight different

449
00:15:19,256 --> 00:15:21,066
subscription lines each catering to

450
00:15:21,066 --> 00:15:22,648
a different age group and topic.

451
00:15:22,648 --> 00:15:23,958
So if you want to support my channel

452
00:15:23,958 --> 00:15:25,376
and feed your brain while having

453
00:15:25,376 --> 00:15:26,448
fun at the same time,

454
00:15:26,448 --> 00:15:29,553
go to kiwico.com/roberdomino

455
00:15:29,553 --> 00:15:31,571
or use the link in the video description

456
00:15:31,571 --> 00:15:32,831
to get an excusive offer.

457
00:15:32,831 --> 00:15:34,521
so thanks to KiwiCo for being so great

458
00:15:34,521 --> 00:15:35,870
to work with, thanks to Dom

459
00:15:35,870 --> 00:15:38,549
and Dom Jr. for just dominating,

460
00:15:38,549 --> 00:15:40,977
and of course thanks to you for watching.

461
00:15:41,320 --> 00:15:42,369
What do we do now?

462
00:15:42,369 --> 00:15:43,944
We're about to clean it up.

463
00:15:43,944 --> 00:15:48,219
Oh there we go, a cleanup robot.