WEBVTT

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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

00:08:16.576 --> 00:08:17.917
really hard for a few years,

00:08:17.917 --> 00:08:19.499
is that the last 24 hours

00:08:19.499 --> 00:08:20.821
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,

00:08:35.867 --> 00:08:38.684
just showing no signs of slowing down.

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So this is a good point

00:08:39.826 --> 00:08:41.861
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

00:08:46.030 --> 00:08:46.954
of time optimizing.

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The dominos are loaded by color

00:08:48.441 --> 00:08:49.554
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

00:08:52.683 --> 00:08:55.376
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

00:08:58.204 --> 00:08:59.216
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

00:09:04.718 --> 00:09:06.346
platform slides over so the bottem

00:09:06.346 --> 00:09:08.043
layer of 300 dominos gets loaded up

00:09:08.043 --> 00:09:08.786
all at once.

00:09:08.786 --> 00:09:10.710
And we also had a back up loading system

00:09:10.710 --> 00:09:12.471
using a tray just incase at any point

00:09:12.471 --> 00:09:13.856
the robot arm wasn't working.

00:09:13.856 --> 00:09:15.322
Besides the Hot Wheels tracks,

00:09:15.322 --> 00:09:16.917
there's a ton of 3D printed parts

00:09:16.917 --> 00:09:18.614
throughout the build that we either

00:09:18.614 --> 00:09:20.286
printed ourselves or, if we were in

00:09:20.286 --> 00:09:22.054
a pinch, my friends at MatterHackers

00:09:22.054 --> 00:09:22.791
helped us out.

00:09:22.791 --> 00:09:23.806
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

00:09:27.391 --> 00:09:28.867
in the room to drop a domino?

00:09:28.867 --> 00:09:30.589
So we preprogramed the route for

00:09:30.589 --> 00:09:32.267
all 102,000 dominos.

00:09:32.267 --> 00:09:34.099
So the robot knows exactly where to go

00:09:34.099 --> 00:09:35.112
right from the start.

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Then as we're driving around,

00:09:36.494 --> 00:09:38.022
we use these indoor GPS sensors

00:09:38.022 --> 00:09:39.643
to track the position of the robot

00:09:39.643 --> 00:09:41.149
so it knows roughly where it is

00:09:41.149 --> 00:09:42.817
and then as we get closer the place

00:09:42.817 --> 00:09:44.299
where the dominos need to drop,

00:09:44.299 --> 00:09:45.846
we use these IR cameras that are

00:09:45.846 --> 00:09:47.296
tracking markers on the ground to make

00:09:47.296 --> 00:09:48.337
sure the robot lines up perfectly

00:09:48.337 --> 00:09:49.357
every single time.

00:09:49.357 --> 00:09:50.607
So the vision from the beginning was that

00:09:50.607 --> 00:09:51.603
we could set Dom up

00:09:51.603 --> 00:09:53.063
we could turn off the lights and leave,

00:09:53.063 --> 00:09:54.279
and come back the next morning

00:09:54.279 --> 00:09:55.654
and you've got like a full field

00:09:55.654 --> 00:09:56.535
of dominos set up.

00:09:56.535 --> 00:09:57.481
He could work all night in the dark

00:09:57.481 --> 00:09:58.227
just fine.

00:09:58.227 --> 00:09:59.120
Alright now how bout these

00:09:59.120 --> 00:10:00.123
super cool wheels?

00:10:00.123 --> 00:10:01.585
So these are called omni-wheels

00:10:01.585 --> 00:10:03.025
and they're awesome because they let you

00:10:03.025 --> 00:10:04.369
translate it any direction you want.

00:10:04.369 --> 00:10:06.396
So this is way better than like your car

00:10:06.396 --> 00:10:08.198
where if you need to move a little bit

00:10:08.198 --> 00:10:09.037
to the left or right,

00:10:09.037 --> 00:10:10.812
you have to make like a five point turn.

00:10:10.812 --> 00:10:12.173
So with these guys you can move any

00:10:12.173 --> 00:10:13.691
direction you want to adjust for small

00:10:13.691 --> 00:10:14.907
corrections in the placement

00:10:14.907 --> 00:10:15.497
of the dominos.

00:10:15.497 --> 00:10:16.927
These wheels are powered by these

00:10:16.927 --> 00:10:18.719
clear path, brushless DC server motors.

00:10:18.719 --> 00:10:20.332
These are like the gold standard in terms

00:10:20.332 --> 00:10:21.497
of speed and accuracy.

00:10:21.497 --> 00:10:22.790
And they allow us to slide the robot

00:10:22.790 --> 00:10:24.274
around by even just a couple millimeters

00:10:24.274 --> 00:10:24.885
a time,

00:10:24.885 --> 00:10:26.503
which is super useful when we're trying

00:10:26.503 --> 00:10:27.566
to make real fine adjustments for placing

00:10:27.566 --> 00:10:28.495
the dominos down.

00:10:28.495 --> 00:10:30.677
Now obviously that's just the uppermost

00:10:30.677 --> 00:10:32.407
tip of the iceberg tip.

00:10:32.407 --> 00:10:35.072
But Dom's brain is over 14,000 lines

00:10:35.072 --> 00:10:36.400
of code all from scratch.

00:10:36.400 --> 00:10:37.726
So if you want to go way deeper into

00:10:37.726 --> 00:10:38.830
the technical details I'll

00:10:38.830 --> 00:10:40.283
put a link in the video's description,

00:10:40.283 --> 00:10:41.621
where I'll just put it all in one spot.

00:10:41.621 --> 00:10:43.501
Now back to finishing the second half.

00:11:14.332 --> 00:11:16.229
So the Dominator has been running

00:11:16.229 --> 00:11:17.924
just under 24 hours.

00:11:17.924 --> 00:11:20.605
And this is a bit of a momentous tile here

00:11:24.265 --> 00:11:26.187
It's a me Mario.

00:11:31.893 --> 00:11:36.135
102,300 dominos are on the floor

00:11:36.135 --> 00:11:37.023
succesfully.

00:11:37.023 --> 00:11:39.200
This is the last 300.

00:11:39.200 --> 00:11:41.399
I think this is a moment.

00:11:41.399 --> 00:11:43.238
You guys get back over here.

00:11:43.238 --> 00:11:46.173
Josh and Alex, let's observe it.

00:11:46.173 --> 00:11:48.658
Don't blow this Dom, you got it buddy

00:11:48.658 --> 00:11:49.712
finish strong.

00:12:00.287 --> 00:12:01.282
We got it.

00:12:01.282 --> 00:12:03.780
Just over 24 hours,

00:12:03.780 --> 00:12:05.564
to lay all the dominos.

00:12:05.564 --> 00:12:06.833
Gentlemen

00:12:08.447 --> 00:12:10.840
It feels really fulfilling as an engineer

00:12:10.840 --> 00:12:12.872
to see the design prosses yield results

00:12:12.872 --> 00:12:13.542
like this.

00:12:13.542 --> 00:12:15.025
And speaking of the engineering

00:12:15.025 --> 00:12:16.051
design prosses,

00:12:16.051 --> 00:12:18.175
my month long creative engineering course

00:12:18.175 --> 00:12:19.709
where I teach this process,

00:12:19.709 --> 00:12:21.472
and where you watch me make three builds

00:12:21.472 --> 00:12:22.601
from scratch, and you make

00:12:22.601 --> 00:12:24.137
three creative builds of your own.

00:12:24.137 --> 00:12:26.123
Is once again open for enrollment for

00:12:26.123 --> 00:12:28.228
a bonus Summer session right now.

00:12:28.228 --> 00:12:29.168
So go to

00:12:29.168 --> 00:12:29.904
monthly.com/markrober

00:12:29.904 --> 00:12:31.911
or use the link in the video description.

00:12:31.911 --> 00:12:33.287
And I'll see you in class.

00:12:33.287 --> 00:12:34.736
So now with everything set up,

00:12:34.736 --> 00:12:37.039
the final step was to knock em down.

00:12:37.039 --> 00:12:38.549
You can see John loading in the Mario

00:12:38.549 --> 00:12:40.032
pipes because they were going to be our

00:12:40.032 --> 00:12:40.895
trigger mechanism.

00:12:40.895 --> 00:12:42.431
The way that works is we've got four

00:12:42.431 --> 00:12:43.974
Hot Wheels cars glued to the bottom of

00:12:43.974 --> 00:12:45.846
this platform that rides in these

00:12:45.846 --> 00:12:47.665
parallel Hot Wheels tracks.

00:12:47.665 --> 00:12:49.844
Then you slap a green sliding shell on top,

00:12:49.844 --> 00:12:51.065
and a motor at the end

00:12:51.065 --> 00:12:52.635
pulls the cart along the tracks with

00:12:52.635 --> 00:12:53.113
a string.

00:12:53.113 --> 00:12:54.850
Then the shell contacts the lever arm

00:12:54.850 --> 00:12:56.238
at each pipe like this,

00:12:56.238 --> 00:12:57.723
which causes them to roll forward

00:12:57.723 --> 00:13:00.007
down the ramp hopefully into the dominos.

00:13:00.007 --> 00:13:01.260
Ok now I'm nervous.

00:13:02.388 --> 00:13:05.008
I wasn't nervous, now I'm nervous.

00:13:05.008 --> 00:13:05.872
OK

00:13:05.872 --> 00:13:06.827
3

00:13:06.827 --> 00:13:07.696
2

00:13:07.696 --> 00:13:08.742
1

00:13:08.742 --> 00:13:09.655
Go

00:13:14.695 --> 00:13:15.791
Yes! Two!

00:13:16.922 --> 00:13:17.977
Three!

00:13:19.491 --> 00:13:20.686
Four!

00:13:21.373 --> 00:13:22.341
Five!

00:13:28.591 --> 00:13:30.389
Oh my gosh

00:13:42.357 --> 00:13:45.271
Got em wooo!

00:13:45.271 --> 00:13:46.308
Yes!

00:13:46.308 --> 00:13:47.619
Awesome!

00:13:49.192 --> 00:13:50.480
Holy cow!

00:13:51.141 --> 00:13:53.539
Wooooaaah!

00:13:54.063 --> 00:13:55.659
Oh my gosh

00:13:56.938 --> 00:13:59.173
And in the end Dom was 50 times faster

00:13:59.173 --> 00:14:00.748
than the skilled domino builder

00:14:00.748 --> 00:14:02.179
and he got himself a world record

00:14:02.179 --> 00:14:02.985
to show for it.

00:14:02.985 --> 00:14:04.706
Although to be fair to us organisms,

00:14:04.706 --> 00:14:06.517
It was in the non-human category.

00:14:06.517 --> 00:14:08.420
And at that point after five years,

00:14:08.420 --> 00:14:09.845
we were just so relieved to be done,

00:14:09.845 --> 00:14:11.262
we got a little carried away carried away

00:14:11.262 --> 00:14:12.673
celebrating the champ with

00:14:12.673 --> 00:14:14.071
an appropriate sendoff.

00:14:22.934 --> 00:14:24.814
Six year old me would be so stoked

00:14:24.814 --> 00:14:26.590
to know that I would eventually build

00:14:26.590 --> 00:14:28.555
a robot that could set up all the dominos

00:14:28.555 --> 00:14:29.281
for me.

00:14:29.281 --> 00:14:31.170
So if you want the same feeling of making

00:14:31.170 --> 00:14:33.147
things with your hands to do cool things,

00:14:33.147 --> 00:14:35.020
but you don't want to wait 35 years.

00:14:35.020 --> 00:14:36.884
Then my friends at KiwiCo have got

00:14:36.884 --> 00:14:37.842
the answer.

00:14:37.842 --> 00:14:40.637
In fact, this is an actual mini version

00:14:40.637 --> 00:14:43.047
of the Dom I designed together with them

00:14:43.047 --> 00:14:44.455
just for this video.

00:14:44.455 --> 00:14:47.570
I mean how awesome and adorable is that.

00:14:47.570 --> 00:14:48.953
He's like the protégé.

00:14:48.953 --> 00:14:50.287
The Dom Jr.

00:14:50.287 --> 00:14:52.038
They got an incredible team of designers

00:14:52.038 --> 00:14:54.037
that work on each project and honestly

00:14:54.037 --> 00:14:55.649
if I wasn't making YouTube videos

00:14:55.649 --> 00:14:57.427
I think I would apply to be on their team.

00:14:57.427 --> 00:14:59.512
Then all the concepts are contested

00:14:59.512 --> 00:15:01.271
and then its delivered right to your door

00:15:01.271 --> 00:15:01.995
every month,

00:15:01.995 --> 00:15:03.669
so you can foster your creativity

00:15:03.669 --> 00:15:05.452
and make your abilities in a fun

00:15:05.452 --> 00:15:06.223
and natural way.

00:15:06.223 --> 00:15:08.135
So for example this domino machine box,

00:15:08.135 --> 00:15:09.499
inside you've got all the supplies

00:15:09.499 --> 00:15:10.646
you need to put it together.

00:15:10.646 --> 00:15:12.275
You've got simple instructions.

00:15:12.275 --> 00:15:13.719
And then a booklet with more info

00:15:13.719 --> 00:15:16.032
like a Q and A with someone you might know.

00:15:16.032 --> 00:15:17.782
And this is the tinker crate line

00:15:17.782 --> 00:15:19.256
But they've got eight different

00:15:19.256 --> 00:15:21.066
subscription lines each catering to

00:15:21.066 --> 00:15:22.648
a different age group and topic.

00:15:22.648 --> 00:15:23.958
So if you want to support my channel

00:15:23.958 --> 00:15:25.376
and feed your brain while having

00:15:25.376 --> 00:15:26.448
fun at the same time,

00:15:26.448 --> 00:15:29.553
go to kiwico.com/roberdomino

00:15:29.553 --> 00:15:31.571
or use the link in the video description

00:15:31.571 --> 00:15:32.831
to get an excusive offer.

00:15:32.831 --> 00:15:34.521
so thanks to KiwiCo for being so great

00:15:34.521 --> 00:15:35.870
to work with, thanks to Dom

00:15:35.870 --> 00:15:38.549
and Dom Jr. for just dominating,

00:15:38.549 --> 00:15:40.977
and of course thanks to you for watching.

00:15:41.320 --> 00:15:42.369
What do we do now?

00:15:42.369 --> 00:15:43.944
We're about to clean it up.

00:15:43.944 --> 00:15:48.219
Oh there we go, a cleanup robot.