Making a Wholesome Interactive LED Poster

Hey, Katelyn.

Hey, Evan.

Are you tired of buying a poster and it just sitting there, static, displaying thesame message day after day? You mean like posters do? Wouldn't you want a poster with 64 randomizedmotivational sayings to inspire you tohave a wonderful day? I would like that.

Hi guys, we're Evan and Katelyn, and today we're making a wholesome, randomizedmotivational pors– (laughing) Poster! which should looksomething like this.

(sparkling noise) And it should workkind of like this.

(clapping) (clapping) I wanna do it again.

(laughing) KATELYN: This video isbrought to you by Squarespace, the all-in-one platformfor all your website needs.

Okay, but how exactlyare we going to create this magical pieceof technology? Well, we're still tryingto figure that out, too.

Yeah, it's been threedays of brainstorming.

Ordering various supplies.

Messing with electronics.

So, in order to make this work, we need some wordsto be always on, some words to showup when we clap, and the rest of thewords to be hidden, so we're making thiswith a series of layers.

At the back are gonna be LEDs.

Strips of LEDsgoing back and forth and those are gonnashine through– Layer two, which is gonnahave all of our words.

At the top, it willsay, “You are a”, then it'll be a series of eight positive, wholesome adjectives, eight positive, wholesome nouns.

Some of them we came up with, some of them ourpatrons came up with.

One of the nouns is potato, so.

That one's not really, like, a compliment, but we thought it was funny.

It's funny.

And then at the very front, we need to have some wayto diffuse the light, and to hide the words thataren't active at the moment.

The words that aren'tlit from behind.

And that's the very first thing that we're gonnaexperiment with.

Are we gonna use plastic? Where is the other plastic? Are we gonna usesome sort of plastic? Are we gonna usethin wood veneer? Or are we gonna use resin? So first off, weare gonna do a few test carves of our letters so that we can test thesevarious diffusing materials and, you know, we just have totake this one step at a time.

Yeah, I think oncewe have that down.




(laughing) (upbeat music) Go for it.

So we're carving ourletters out of MDF but you'll notice that we'recarving some little boxes too.

These are gonna go behind ourletters because we realized we actually need twolayers of diffusion.

We'll show you why.

We have these cutouts right here of the shortest word, cat.

Now if we just put thiscutout against the LEDs– KATELYN: It doesn'tlook that great.

EVAN: It's not that great.

Even with thediffusion on the front, it looks pretty bad.

'Cause we can't rely on the LEDs to line up perfectlywith the letters.

EVAN: So we canmake a little box, and add a littledistance between theletters and the LEDs, and you get something like this.


KATELYN: Better.

EVAN: Still not great.

Depending on wherethe LEDs line up.

Shadows, shifts, andit's just not great.

Now, if you also adddiffusion behind the letters, now you're startingto get somewhere.

That evens out all of the LEDs, and when you add it with adiffusion layer in front, you get some prettygood results.

So we have our list ofpotential inside materials, potential outside materials.

The inner diffusion ismostly to diffuse the light.

The outer diffusionmaterial is for that, but also obscuring the lettersthat are gonna be unlit.

So let's get toprepping all of those, and then we can seewhat our results are.

EVAN: Montage time! (spray paint cans rattling) So just a layer on, moretesting while we're at it.

We are also painting ourboxes black and white, to see how that affects how much the offletters are obscured.

We also need to pre-prep one of our inner diffusionmaterials, which is resin.

And we've got a fancysyringe to do it.

Mad scientist time.

It's working, it's working! KATELYN: It's our first timeusing these fancy syringes.

EVAN: Oh yes.

KATELYN: It dripped immediately.

That's great.

EVAN: Oh my gosh, yes.

All right we haveeverything prepared, and now it is timeto test them all.

But first.



(gurgling noise) (laughing) What if that noise waspicked up on the mic? Everything is prepared.

Let us show you whatwe've got going on here.

Okay, I'm going to runthrough all of these materials as quickly as I can, so you have contextfor what we're doing.

So for the inside, polypropylene, mystery plastic, and resin.

Now for the polypropylenein mystery plastic, we're going to try thesame outside diffusions.

Polypropylene with white MDF, polypropylene withblack MDF, and wood.

The third insidematerial, the resin, is going to be alittle different.

We're only going totry it with white MDF, and polypropylene.

We're going to tryit with the wood and then we arealso gonna try doing a full resin pourover the whole thing.

Now we can't do that pourwith the other materials, because there are toomany points for leakage, but we're going togive this a shot.

Do you have any thoughts on what you thinkis going to do best? Katelyn had a really good ideaof painting the face black.

Because I thinkthat's gonna make the unlit lettersshow up the least.

And I 100% agree.

I think that's super smart.

My prediction for the bestinterior diffusion material is actually going to bethis really thin plastic.

Mystery plastic.

Yeah, it lets a lotof light through, but it also reallybreaks it up well, which is just whatwe're looking for.

And I think for the outside, I'm thinking the polypropylene, because it looks nice.

I don't know.

I feel like that is avery practical prediction.


The thing that I wouldlike to work the most.




All resin? How dare you?(laughing) All resin.

I want resin on the inside because I really wantto do a resin over pour and the only way wecan do it, really, is on the one with theresin and the letters.

Otherwise, it's just too manypotential places for leakage.

Yeah, it could leak outof every single letter.

Let's start with thepolypropylene inside on the testing bench.

Can you do it one more time? Wait, wait, wait.

I'll tell you, now.

On the testing bench.

All right, first stop, wood.

I have very largeconcerns about this because the type ofveneer that we got has this adhesivebacking on the back– KATELYN: It's kind of thick.

EVAN: And it's kind ofthick and it's very opaque.

No! EVAN: All right, Imade this test bench to be variable brightness.

KATELYN: Turn it up all the way.

You can barely see it.

Oh no.

(laughing) So this was our original.



Our very original first idea was that we weregonna use wood veneer.

Because we saw somebodydo it online once, and it looked really cool.

EVAN: And I thinkwe're going to have to knock this out of therunning for every single one.

It just doesn'tlet enough through.

It doesn't, itdoesn't do anything.

Sorry, wood.

A lot of our patrons werevery much excited for that.

(Evan laughing) All right, next up onthe list is the black and the polypropylene on top.

That looks good.

KATELYN: That looks good.

Can you turn the lightsoff, so I can see like.



Oh and it's not, it'snot really visible.

EVAN: It's not really visible.

So that would be good.

EVAN: All right, let'stry it with white, though.

KATELYN: Also nice.

EVAN: That one looks good.

But, wow.

KATELYN: Like, just as visible.

You know, we could decide thatthat's an aesthetic choice.

If we think it will look cool.

We could try mocking it up now that we knowwhat it looks like.

But, yeah.

Oh yeah.

(Evan laughing) One is very visible, one is not.

All right, what'sup next on the list? Mystery plastic.

So I cut out alittle sheet of this.

What is next? Yeah, what is next? Actually, try the wood, because this is thinner.

EVAN: All right.

Okay, it still looks terrible.

EVAN: Let's tryit with the black.

Black and polypropylenelooks great.

KATELYN: That looks nice.

EVAN: Now we'll do thewhite polypropylene.

KATELYN: Okay, that is nice.

It's very comparable to withthe polypropylene as the base.

And now Katelyn'smain contender.

Da, da, da! (Evan laughing) Resin! Oh, it's a little bit dull.

EVAN: I thinkbecause it's uneven.

This is a uniformpiece of plastic.

This has a lot of interestingflow going on the resin, which leads to cool art.

But if you're lookingfor something even.

I am not sure if resin's it.

Dang it.

Put something on top ofit, I'm just curious.

(Evan laughing) Okay, crush my dreams.

EVAN: Okay, okay, I'll do polypropylene.

KATELYN: Yeah, that looks bad.

Okay, so let's gothrough the results.

Resin, I think we cancross all of it off, sadly.

(laughing) Wood, cross all of them off.

KATELYN: So that leavesus mystery plastic or polypropylene for the inside, and white or black could work.

EVAN: Yeah.

I think we might want to doa.



should we do a mock up? Like a Photoshop mock up inside? If we want the lettersto subtly show through as like a feature.

Yeah, so we can use Photoshop, or white or black surface.

But I think interms of the inside, it's a pretty easy test.

We want as much light aspossible, as even as possible.

So let's just laythese two right here.

KATELYN: Yeah, it'sgonna be, you know, a little different becausethey're different colors.

EVAN: So here ismystery plastic.

Here's polypropylene.

Now let's lay this top on.

I am looking through thescreen and I can't tell.

Can you tell? In real life, the mysterydisperses it better.

KATELYN: Here, let meturn on the ISO in here, so you guys can see it too.

There seems to bemore shadowy pockets.

EVAN: Hot spots, yeah.

More splotchy.

KATELYN: It's a littlehard to see on camera, but I think the mysteryplastic for our underside.

Yes, I agree.

Okay, so we haveour final materials.

It's going to bepolypropylene on top.

It's going to be mysteryplastic underneath.

Let's take some pictures ofit with the white painted MDF, and the black painted MDF.

And I will Photoshophow it could look like.


Every word will be cat.

(laughing) But it should give us an idea.

(laughing) You are a cat cat catcat cat cat cat cat cat cat cat cat cat.



KATELYN: Do you approveof our word choice? SUPURRVISOR: Yes.

KATELYN: Cat, cat, cat.



I gotta go Photoshop, you wanna come with me? Okay, so we have acouple of mock ups.

EVAN: Oh, Joobie hasbeen hard at work.

You did all of this allby yourself, Joobie? KATELYN: Yes, well, she hasto approve the final concept.

EVAN: Okay, okay.

Okay, so here it is on white.

EVAN: Can you make it bigger? No.

(Evan laughing) EVAN: You are acat cat cat cat.



KATELYN: So you cansee the background, but your eye, stillI think, goes to cat.

Okay, and here it is on black.

EVAN: Oh, I thinkthat, I think black.

KATELYN: I thinkit has to be black.

I think that willlook really cool.

EVAN: Joobie, what do you think? Do you approve?SUPURRVISOR: Yes.


EVAN: But it's super exciting.


EVAN: Is she gonna let you up? (phone ringing) Hey there all youcool cats and kittens.

This is Big Cat Cat Treats.

How may I serve yourcat treat needs today? SUPURRVISOR: Do you has treats? Well, all of our ordersare placed online because our website is actuallybuilt with Squarespace.

We can host an unlimitednumber of cat treat varieties.

Hey Katelyn, haveyou seen my phone? SUPURRVISOR: Oh no, they are onto me.

If you need to call back later, we actually haveappointment scheduling because of Squarespace and we can coordinateour calendars.

SUPURRVISOR: I seeSquarespace works on mobile.

Yup, and if you're inthe need for a website, go to squarespace.

comfor a free trial.

And when you're readyto pull the trigger, go tosquarespace.

com/EvanandKatelyn for 10% off your first purchase.

SUPURRVISOR: I amin need of treats.


Hi, so it's the next day, and we have a lot of work to do.

We have five different CNC cuts.

We got the diffusion, nine minutes, not bad.

Letters, two and half hours.

Diffusion box, 1.

25 hours.

LEDs, 2.

25 hours, and then enclosure, an hour, so we're looking at aboutseven to eight hours if everything goes well.

And it's 1:30 in theafternoon right now.

So wish us luck, 'cause this is one ofthe longest CNC marathons we have ever embarked upon.

(upbeat music) So, we didn't finishthe carves in one day.

We're on day two.

And while Evan continuesto keep an eye on the CNC, (machine noise) KATELYN: How's it going? Very serious.




I am gonna startpainting the layers that are complete.

Do you want to help?[Supurrvisor] – No.

KATELYN: Well, hello, excuse me.

(upbeat music) Yay! I was just checking tosee if I was sweaty.

(both laughing) All right guys, all ofthe layers are done.

I think more thanany other project, this has takensignificant brain power.

A lot of designing and iterationhas gone into something that is gonna end upbeing pretty simple, yet hopefully gloriouslybeautiful and fun.

Anyways, all ofthe CNCing is done.

I think let's just doa little quick example of how the electronicsworks on a small scale before we scale itup to the full size and assemble everything.




I'm gonna have to come around, everyone's gonna seethat I'm in PJ pants.

(Evan laughing)No, no, they can't see.

Ha ha!Ha ha! All right, so when we puttogether the final sign, there's going to be LEDs running back and forthalong these channels and each is gonna havean individual location, like one, two, three, four, five, six, seven, et cetera, et cetera, et cetera.

And those are going to line up with these boxes right here.

Now for the sakeof this example, I went ahead and simplifiedeach of these boxes to a single LED right here, so you can see howthese are gonna work.

Now, “You are a”will always be lit.

And when I trigger anevent, like a clap.



(clapping) KATELYN: Work.

(Evan laughing) EVAN: Or a touch of thesensor as the backup because the clap sensorisn't the most reliable, it's going to triggera little math event inside of its brain, whereit'll choose a number between one and eightfor the adjective, and one througheight for the noun, and that is the box orLEDs that will line up.

So basically all we have to do is assemble all ofthe LEDs into here, count which numbersline up with which box, reprogram this littlebrain right here, and then this is gonna be done.

Oh ho! It's been a journey.

It's been a journey, I'm excited.

(whimsical music) There is something so satisfying about a well-thoughtout plan going to plan.

Everything is fitting.

I'm ready for the test, but I just have to note, and just have a moment ofenjoyment and satisfaction for detailed CNCwork and 3D modeling coming together as planned.

Oh Katelyn, look atthe underside too.

Oh, I haven't seenthe underside yet.

EVAN: Isn't that beautiful? Wow, the way youlooped the wires around I mean I know wetalked about it, but like, oh my god.

I wasn't done!(Evan laughing) My god, look at that though.

That's awesome.

It makes me so happy.

It's coming togetherwonderfully.

It really is.

This has been, like, I know we've said it, but this has not beena simple project.

I feel like we've grown alot through this project.

This is one of thoseprojects that you take it on because it's a challengeand you grow through it.


Speaking of growth, areyou ready to test this? Yeah, well, whichpart are we testing? Like, if the claps work? Just everything.

Does it light up? KATELYN: Does it light up? I programmed it, but I.



you know.


(clapping) EVAN: Hey, hey, hey! That's awesome! We might want to relyon the touch sensor.

Yeah, let's try this.

Yes!Yay! Oh that's so great.

Oh my god.

I can't wait forthose to be words.

We have everythingwe need right here.

We need, we needto trim down this.

Our inner diffusion, our mystery plastic? Yeah.

Mystery plastic wedon't know who you are, but thank you.

But I think that it's justassembly, and that's it.

KATELYN: Oh my gosh, oh my gosh, oh my gosh.

Oh man.

It's nice, really, youcan't see the letters too well when it's off.

That's perfect.

So the black paintworked as planned.

What you are looking for? Ahahaha! I need to clean up.

KATELYN: Those are sharplooking, that brass.

EVAN: Can you runsome electrical tape? I had to realign itso it was precise.

The little curvesbaby, look at that.

It's the little details.

I know no one's gonna see this, except for all ofyou guys, but.



It's a lot of people.

It is so smart, nice looking.

EVAN: Beautiful.

Yes, yes! KATELYN: Behind theposter complexity.

(laughing) All right.

This is the final thing, if we did everything right.

KATELYN: Then it should work.

Fingers crossed, ready? Yeah.

EVAN: All right.

KATELYN: It's stuck.

EVAN: This is themoment of truth.

KATELYN: We havethe “You are a”.

(clapping) We are a stunning eagle! You are a stunning eagle.

Oh my gosh.

What are you goingto be Katelyn? Oh, it's in the back.

The touch doesn't work.

Okay, well.



Where is the littlepiece we had earlier? I think we threw it away.

Maybe it's too manypieces folded over? What if I just do this side? Yeah, okay.

EVAN: This was going tobe our victory moment.

Okay, fine, I'll justclap three times.

(Evan laughing)(clapping) EVAN: You are a wholesomepotato, Katelyn! Yeah! I am a wholesome potato! That's a winningcombo, right there.

Oh my gosh, wait, wait, wait.

One thing we gotta do, wehad a clap for our audience.

Oh yeah, okay.

This is for you guys.

This is for you guys.

Ready? What is the audience? Wait.

We're going to count tothree and you clap at home.

You might have toclap a few times.

Okay, what is, what are you? Just feel it inside of you.

Ready? Three, two, one.

(clapping) You are a majestic eagle.

Y'all are majestic eagles.

Don't forget it.

We love you guys.

You are a chaotic flower.

Don't forget it.

I was yelling somuch, it changed.

(clapping) Okay, we wanna getthe touch working so that we can bringin the Supurrvisor.

without scaringher with our claps.

The claps are the most fun.

EVAN: Maybe this is too long? I don't know.

I can figure this out though.

You know, it was one of those– Oh, wait.

Wait, what happened? What'd you do? I just turned itoff and on again.

Of course, 'causeit's a computer and even though it's atiny little computer brain it still is a littlecomputer brain that needs rest everynow and then, so.

Okay, I am gonna get the Joob.

Okay Joobie.

Let's see what you are.

First off, what do you think? Do you approve? No, not the tape, baby.

The sign, the sign.


Look at this, wow.

You are a.



You are a fancy mountain, baby.

(Evan laughing) Oh my gosh, we did build herinto a mountain in Minecraft! She is the fancymountain, literally.

This predicts thef-.



the past.

What does Joobiethink that I am? Joobie thinks that you are a.



Majestic flower.

Oh, what does she think I am? A fancy mountain.

Also a fancy mountain.

We are the same, we are one.

(whimsical music) Thank you guys somuch for watching, I hope you had funwith us in this video.

If you haven't heard, we have a gaming channel over atyoutube.

com/EvanandKatelyngaming I am majestic tree.

(laughing) We hope to see youguys over there.

And we'll see you next time.

Bye! (clapping) Ready?Yeah.

Bye! You're a chaotic human.

(laughing) That's like.



I know, I know.

It's very similar.

It's kind of likehow I imagined it.

It's really nice, baby.

Thank you.

I'm proud of you.

I'm proud of you.

I am proud of our poster.

Like, relax a little bit.

Shake your booty.

Oh no, you're gonna putthat in as a blooper.

No I'm not.

Oh no.

Are you ready?Oh no, no, no.

Shake your booty! Serious face.


Gingerbread men livein gingerbread houses.

Humans build their housesout of human flesh.

I mean, logically speaking, yes.

I guess if youmade, like, a human, you could make human leather.

What? Wait, wait, how did theconversation get here? You could make humanleather and build a teepee.

Oh, that's so creepy.

That would be a human house.

Or you could makeit out of bones.

I wonder if youcould crush bones, and then mix them withclay, to strengthen them? Mmm.

Or if it's cold enough you could build an igloo outof frozen blocks of blood.

Many ways.


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