Building 10 Motorized Lego Doors

Different motor-operated doors and how to build them with Lego Technic. Enjoy!
00:10 Basic door
00:43 Sliding bus door
01:27 Revolving door
02:10 Vertical lift door (portcullis)
03:13 Folding garage door
04:35 Tilt up garage door
05:31 Sectional garage door
06:39 Roller garage door
07:37 Bi-parting sliding hangar door
08:26 Telescopic sliding hangar door
09:46 ALL DOORS SIDE BY SIDE

[@JasonOfTheBirdmen]

This channel was already great, but the little stop motion bits make it that much better!

[@EEEEEEEEEEEEEEEEEEEEEEE856]

​@@DontReadMyProfilePicture.94ok

[@Bricks.Master.Builders]

Yes 😍

[@Cirkol1]

here before this blows up

[@broodaiamdewey622]

The revolving door one impressed me. Stop motion with real time is just insane.

[@EchoBuildsThings]

@@broodaiamdewey622Yeah! I was wondering how he’d do it.

[@mrs3097]

If the SCP foundation hired this guy they wouldn’t have containment breaches.

[@pro_fail]

SCP-682: What the hell, why can't i break through these cursed doors Scientist: It's because our budget allowed us to buy an entire 4 lego sets to contain you

[@partycrasher1569]

@@pro_fail😂😂😂

[@BoringAhdudewithboringahpfp._.]

Scp-096:WHY WON'T YOU DIE Door:lego machine son

[@Simigema]

@@BoringAhdudewithboringahpfp._.I farted

[@vivianchang6802]

Yesss

[@thejerm333]

On behalf of every former kid who owned the old-school castle set, thank you for finally making a functional Lego portcullis.

[@Gh3ttoboy]

Now you just need 2 minifigs work together to lift it up without a motor perfect medieval portcullis

[@tpwrm3458]

the prophet muhumad was lied to and deceived by the devil follow the one true God Jesus@@Alexander-it9lv

[@user-sl4hx8vs9w]

@@Alexander-it9lvonly if you sing hallelujah first

[@xx_worldjaxx_xx1494]

​@@user-sl4hx8vs9w wrong one buddy

[@user-sl4hx8vs9w]

@@xx_worldjaxx_xx1494 do people still use wooosh?

[@RaichuKFM]

The stop motion with the rotating door blew me away. Really well-done, whether it was compositing or some other trick that's beyond me. It's just so fascinating to see the things you make for this, but the stop motion is such a stellar bonus, gosh.

[@nomadMik]

Yeah, I was trying to work out how they did that. They missed editing out the strings for the aeroplanes and cars, but it's still awesome.

[@lorenzoniccoli99ln]

​@@nomadMikikr what a weird inconsistency

[@lewiscampbell8013]

yeah i was wondering about that also

[@daninocchi]

its pretty easy to do tbh here what he did: he recorded the stop motion first and then did the animation, and separated he recorded the door^ then he put everything together and put a mask on the lego guy thats what im thinking it was the case, but it blew up my mind for like 5 minutes

[@tamanwin7278]

Everyone is wrong, legos are alive they move when you dont watch them.

[@JayMaverick]

Not only fascinating from a Lego-building perspective, but really cool showcase of doortypes for different purposes.

[@user-sl4hx8vs9w]

@@Alexander-it9lvgay

[@kaboom-zf2bl]

pity he didnt do the according folding hangar door ... works like his sideways door but lifts up like the solid lifting door ...

[@mirsobitgulomov4611]

😅. Opkelishvotkanakn😅😅.. ​@@kaboom-zf2bl

[@user-qs6ud2gr1n]

The stopmotion is amazing! love how you put so much effort just for us😍

[@thomasmorris6525]

Agreed

[@meiam545]

How did the horse get its motion?

[@fivebrosstopmos]

​@@meiam545It's one of the newer bucking horses.

[@Mike-oz4cv]

“Just for us” … the guy has 3M subscribers and is probably doing KZbin as his main job.

[@mulinaky]

bot

[@tcgly3273]

I'm an industrial garage door technician, so I found this pretty entertaining.

[@blackdragon29076]

Every door is cooler than the last one, and I love how you used stop motion (or pulling vehicles with a string) to showcase the doors in an awesome way!

[@Tigrou7777]

2:05 I wonder how you did that frame-by-frame capture for the Lego character while having a animated revolving door on the other side.

[@fenix1495]

Yeah I thought too about it, it was super smooth

[@PsychoBelka]

2 Separate recordings layered on top of each other. One of door revolving, other is lego figure moving, without door.

[@fenix1495]

@@PsychoBelka oh I don’t even thought about that, that’s how it was made for sure

[@octaviusmorlock]

Alternatively, I think you could do it with one layer and a lot of patience. Moving Mr. LEGO and waiting for the door to line up again. I basically know nothing about editing, so take this theory with a grain of salt. It probably is the dual layered footage @PsychoBelka mentioned.

[@bingusbongus9807]

@@PsychoBelka cant be, you can often tell how these things are done by looking at bounce lighting, its hard to fake and easy to miss (when you have a red floor and a white wall the wall will look a bit red from the bounce lighting) you can see on the lego man that he reflects red, so the door had to be there in his take, also the shadows move and morph with the lego man and the red door perfectly, the only solution is he spent alot of time on this, theres no easy way to do it how he has done it, all the easy ways have markers showing he didnt do them my current theory (how i would do it) is that the door IS stop motion, the sound of the motor is being played over the top, each frame hes moving the door, this would be triple the work from normal already hard stop motion (the door is running at 2 times the frame rate round abouts plus its an extra thing to animate so i estimate 3 times the work) but if we are looking for certainty then i cant tell, ive watched it 30 times now and i cant for the life of me see an obvious tell, the only solution is whatever he did, he worked hard on it and it shows

[@petermurphy9860]

Love the contrast of the red pieces against the grey. That roller door is 👌

[@Peridot5xg....]

As I read this comment I questioned myself "A roller door"? Then as I thought that it came up on screen and I agree it's nice

[@sangreviews5226]

This person makes me feel like an engineering mechanic, civil engineer even though I only watch Lego, Thank you, bro

[@theblomster1354]

There’s already a ton of comments saying this, but this channel is seriously one of the most creative, fun, and interesting displays of engineering on the platform. Love what you’re doing, keep up the great stuff!

[@user-sl4hx8vs9w]

@@Alexander-it9lv holla snakbar!

[@MisterNohbdy]

It's cool how you built tiny motors into all the LEGO people so they can move independently. Really adds a professional touch to these videos.

[@personpointingtwogunsatyou]

Its called stop motion and it takes a lot of time to do it. you need to change the position of the lego people and take a photo after each change so it looks like its moving

[@MisterNohbdy]

@@personpointingtwogunsatyou are you playing the comedic foil here in this bit

[@personpointingtwogunsatyou]

@@MisterNohbdy what

[@Acoolnamme]

​​​@@personpointingtwogunsatyou oof You fell victim to the stereotype of the oblivious commenter who misses every joke in the comment section no matter how obvious. You have my condolences

[@personpointingtwogunsatyou]

@@Acoolnamme oh i get it now

[@Blorkus]

I miss those tiny 2x2 motors. They're so cute! Excellent video as usual, I love interesting doors!

[@WeItenspinner]

They are great. A friend of mine still has two of them, but wont sell them to me. XD

[@g.williams2047]

They're crazy expensive, and this video is going to drive up the price even more. I hate it. Thankfully I have one already but if it ever breaks so will I.@@WeItenspinner

[@baconiumo]

​@@g.williams2047Out of curiosity and mostly the fact im on mobile and can't be bothered to look myself, how much are they?

[@isakmagnusson8647]

I recommend RR Sluggers video on those motors

[@Blorkus]

@Alexander-it9lv please don't do that

[@xyzabc4574]

Tilt up garage door blew my mind. I don't remember ever seeing anything like this actually built. The geometry of it was mesmerizing. This is what Ross meant when he was yelling, "Pivot!"

[@xander1052]

4:35 as an interesting side note, we have a tilt up garage door that achieves the same affect but with the setup being the opposite way round, with the bottom rolling between rails.

[@necorV]

It's technically possible with either, or even both as our garage does. Each has their own dis and advantages. I zhink it's one of the more common garage doors as well? Since there's the least pieces to generate friction, thus low maintenace.

[@m1k1a1]

I like that idea. Sounds like it works better in winter when wind blows show against the closed door.

[@SuperdivorceChugsFarts]

The effort you put into each video is astounding

[@danek_hren]

​@@DontReadMyProfilePicture.94 or else what 🤡

[@zeratul074]

At first, yet before watching the video, I was intending to just agree with Your opinion. After watching the video I am very unsure if those words of Yours are enough to describe sheer genius of The Author😉

[@mcdswifi]

The effort these bots put in their comments is astounding.

[@danek_hren]

@@mcdswifi agree, it is as small as my di- I mean brain.

[@danek_hren]

@@Alexander-it9lv cringe

[@WitchyLadyLily]

very nice job on the stop motion at 2:00 :D

[@iplayminecraft2248]

how did he do that though

[@viktorkongskov5692]

My thought exactly! I can't figure out how he pulled that off

[@billyea]

For each position of the minifig, instead of a still photo, take a video of the door swinging through all possible positions. Then in editing, select the frame from the video corresponding to the most appropriate position of the door.

[@krrishgoyal6567]

​@@billyeai don't think that's what he did. That seems unnecessarily tedius. Also the gears look in continuous motion. I think after the minifig stops for a sec he manually moves the gate for every frame instead of using the motor

[@NoteBrix]

@@iplayminecraft2248I think he made one video where the door was turning and then another without it turning and then he combined both. or he slighly turned it for each frame.

[@scose]

"folding garage door" 3:13 has a kinematic singularity. To push it from 95% closed to 100% closed without the help of momentum, you must put a lot of force on the tab linking the cable to the door. I wonder how well these work IRL, never seen one.

[@anlumo1]

The trick is to never have it at exactly 180° angle. With real life mechanics that is quite easy to accomplish, not so much with LEGO due to its discrete block sizes.

[@damnjjp2023]

Sheldon cooper playing with legos be like

[@FTS1366]

I like the basic door so I’m basic 😂

[@24Ninetynine]

@@DontReadMyProfilePicture.94 I’ve read your name what you gonna do about it huh

[@GabrielPettier]

2:06 wait, how did you do that? 😆 Great stopmotion skills!

[@WolfieNamira]

i dont know for sure but they could have taken two videos, one of just the door and another of just the minifigure walking and layered them, and maybe erased the parts where the minifigure was covered by the other video, i could be completely wrong though.

[@citratune7830]

I think he prob paused the motor, but idk

[@GabrielPettier]

@@WolfieNamira yeah, i’m guessing two separate videos and some tool assisted blending.

[@nilsdock]

you can see the string pulling the cars along, it could be the same scene

[@GabrielPettier]

@@nilsdock that won’t make the little guy walk 😆

[@NutelGameMe]

Can we just appreciate all together the stop motion in this video that is absolutely not required and must have taken so much time !

[@Space-1255]

I'm genuinely amazed at how simple yet so complex doors can be

[@Boxland_]

I love the doors where turning on the motor is as much work as operating the door manually.

[@user-wj8es7tq1u]

7:13 satisfaction of this moment is so hard like im falling asleep rn

[@jeffcarey3045]

The stop motion figure + live revolving door was very well edited together.

[@ChevronTango]

Stop motion is hard enough, but then you go and do it with the revolving door! Wow!

[@johannwickerman3555]

I'm absolutely adoring the stop-motion recently. Makes your content even better than it already was; gives it more charm.

[@burnabybee]

babe wake up brick experimental channel posted

[@Ziggy-hy4fn]

The roller door was hella impressive but I still can't get over how good that vertical lift door looked! I love these videos.

[@CHAOS_6E]

Yes… 1 million of us just spent 10 and a half minutes watching a video about motorized Lego doors.

[@ChaosDivision64]

6 million, actually.

[@-BBT_07-]

Nooo you didn't build a drawbridge 😭 it's a bit like a door-bridge, so does it count ?

[@thewhoareyouperson2774]

love this! especially the progression from simple man-doors to further in the technological eras. next could be a missile silo, haha! the attention to detail with the stop-motion is also really cool!

[@Rohrak]

And there could be different doors for a missile silo. A bunker hatch, an iris door, etc.. And he can try to do an airlock and decompression room for submarine or space station.

[@dylanciagaa]

all of them were amazing, but something about that telescopic hangar door mechanism was so satisfying to watch.

[@RYNOCIRATOR_V5]

i liked the bi-parting door best, love the way you link them together, so simple yet brilliant

[@kaiser2141]

8:12 _That's perfection_ 😌

[@montanaspaniol276]

Amazing video! I would love to see someone integrate those “sliding bus doors” into a republic gunship build! Keep up the great work!

[@fryncyaryorvjink2140]

I like the simplicity of that solid flip up door. Plus you could disguise it to just look like a wall

[@StanleyKC]

This might be the best 10 mins I've spent on KZbin

[@Inculturapedia]

Since I started watching this channel I got a renewed interest in engineering, thank you BEC! ⚙️

[@im6525]

Me too!

[@user-sl4hx8vs9w]

@@Alexander-it9lv🐷

[@CaveJohnson376]

there's also other kind of bus doors, that instead of sliding, they kinda rotate around, like tilt up garage door. honestly, i would like to see it made in lego. same goes for pop-out and slide train doors, not sure how they're actually made and since i'm already throwing ideas out, what about elevator doors? they often have interesting kinematics of coupling and locking, even if at the end of the day, they're nothing but simple sliding doors

[@lagos8010]

Ok but the stop motion section going through the revolving door? Brilliant. Genius.

[@-CMajor-]

Walking animation through the revolving door! Incredible!!

[@angelofdeath100001]

Great video, I thought for number 10 you would have some some kind of crazy awesome door that would have all the door mechanics in one

[@theschmonkiboy]

6:00 this is my favorite!

[@thechoseno_ne]

same

[@zloboslav_]

I can't wrap my mind around the stop motion on the revolving door - this is so impressive and I don't know how you did it!!! I loved all of these designs very much!

[@decryptic999]

Those animation/stop-motion alone needs to give a like

[@eisenbahnerharthausen]

3:32 This door reminds me of old tram doors, like Tatra's.

[@LegoBricks_]

Imagining my channel attracting subscribers just like this one.

[@aserta]

Awesome video! Also, 2:31 great start for a cool castle right there.

[@Aviation-miku]

I do agree

[@lester44444]

that castle gate design looks so much better than like...90% of the castle gate designs out there hahaha and it's so damn simple

[@dualbasilisk]

The stop motion for the revolving door is very impressive!

[@ARPCsound]

I love that ! It’s so good, found a small forgotten bit of wire at 6:32 ahah I was actually wondering if the cars had motors too, now I got my answer ;) Keep up the good job mate love the channel

[@phukhang0905]

3:07 Bro how the hell the did the Medieval Colony have the electric-powered gate 💀💀💀💀

[@user-pi2go7wv4j]

[Medieval style voice] They pulled a string!

[@____admin]

The sliding bus door was my favorite one, cuz it looks so cool made in Lego! ❤🎉

[@TheGasMaskGuy96]

You are so good with Legos, I start to think that Lego-benders exist.

[@EJaDav]

I hope MOC creators integrate these designs into their MOC’s, I love the sectional garage door especially.

[@EBhero]

I really enjoy the sound design of your videos! All the small clicks and clacks of the Lego bricks are really cool

[@nathancarter8239]

I saw the telescoping hanger door design and said "Ooh, nice" out loud, suffice to say I loved this video!

[@austinb7654]

Having every single door from here in my builds is literally my dream. Forget Harvard, just give me this

[@pakoyyy7136]

0:11 THAT SNAP

[@MaturedSinner]

7:55 I can't be the only one

[@user-pi2go7wv4j]

It's that piece that looks really sus!!!!!!!!!!!!!!!!!

[@Welkins]

The editing for the revolving door is most impressive.

[@AllDayBikes]

I thought my favorite was the sectional door, until the roll up door was made, goddamn that looked beautiful.

[@HundBlu]

I never thought I would enjoy LEGO-content this much. Good job on every video!

[@mobiletransportvideo]

3:19 could also be a bus door.

[@namasayagiri]

Seriously bro, LEGO should make you their brand ambassador

[@KhanhNguyen-uw2wz]

I pick number 7 sectional garage door. That’s very cool.

[@joannaalder6844]

2:24 bros gone to the dark ages

[@vlcendo]

Me: Kills metrocop from HL Metrocop: 8:06

[@racer927]

Zero-Two unit: deserviced. Remaining units: contain.

[@marcusr712]

Pick up that can.

[@rbw3000]

The revolving door one blew my mind with the stop motion👀👀👀

[@Hankted]

i like how clean the editing of the folding garage door because at first when it comes into frame there isnt string attached to it but when the doors open you can barley see the string. great job on that

[@hybrid.roodragon1226]

7:31 A HA! 😂the string for the car. You aren't just pushing or pulling it

[@martinluther2556]

Wingardium Leviosa

[@fenix1495]

Cool video as always. Can you tell how you made that stop motion so smooth?

[@theinvisiblegaijin1165]

I think for the cars moving thru the opened doors, he used a black string to pull them over

[@fenix1495]

@@theinvisiblegaijin1165 that is obviously man, I mean for example on 2:00

[@yungshinobi8162]

The vertical lift door (castle door) has to be the best one imo :)

[@IHgamingWSB]

The revolving door editing was impressive

[@tvpg3d]

The only problem when using technique pieces is that the parts are usually odd numbers long, that means that the build would not be completely symmetrical sometimes

[@Psi_Fan123]

When is a complex lego technic build ever symetrical

[@automation7295]

People on KZbin be like: **Everything should be to be symmetrical** Does it really really matter if they're symmetrical or not? People doesn't get trigger or offended when they be an asymmetrical roads in real life.

[@tvpg3d]

True

[@tvpg3d]

@@Psi_Fan123 as in when trying to use technique pieces with normal bricks

[@themalwaremunch798]

7:26 ORARARARARARARARA

[@miro_theburger]

star platinum??!?1!1?!1!

[@neslock]

I love how the portcullis even rattles audibly like a full-size one.

[@tayniloalves7089]

Love the sliding bus door! The stop motion on all of it is great!

[@ekeimaja]

Nice beat at 2:42

[@ThinkingCrimson]

Sounds a bit familiar.... RICK ROLL?!

[@YTPabloTV]

​@@ThinkingCrimson No, is the cup song

[@joannaalder6844]

8:24 bros got a 172 Edit: i mean a cesena 172 carer van (Plane)

[@lukemill795]

man, it always impresses me of how electronics can build these kind of stuff.

[@EnderProjects]

I would love to see a huge lab build with mini figures on tracks going through these doors as they open just in time for them to go through

[@disgustingapple5216]

1:20 !!!! ILLEGAL BUILDING TECHNIQUE!!!!

[@henreereemanmini3973]

are all of these doors legal?

[@berengamble1882]

The roller garage door was so satisfying

[@nickryan3417]

Just amazing use of lego and demonstrations of so many key engineering mechanisms. That they reflect the doors that we've all seen and how they work makes it all the better. The only query I have in my head is if no. 7, the Tip up garage door, the motor mechanism is in the right place? I'd have guessed that the mechanism for these would be a sliding rack and pinion to lift the door because rotating the arm requires a lot of torque. Just a thought, happy to be proven wrong and doesn't detract from it all at all. I'd love to see some of the lego city builders incorporate this kind of thing in their creations.

[@georgektistakis924]

0:16 THAT'S ILLEGAL

[@Legtlizrd]

What was the motor you used at 1:45?

[@miro_theburger]

i think its called a micro motor, not sure though

[@ajesterofsorts55]

It's been years since I played with with Legos, but this is amazing I wish I had had these ideas when I was younger.

[@dxb338]

im most impressed by animating the minifig going through the moving revolving door

[@The-creator-of-good-videos-15]

1:52 I have actually seen revolving doors outside shopping centers. Well, shopping centers that I’ve been to that have them.

[@SierraRail3Prod]

FNaF doors in a nutshell: 2:53

[@ivansmith654]

You get a basic idea of how things can work for you in Lego, very helpful information, thank you!

[@mattikaki]

Really educational video. I wish I had an arsenal of Legos like that when I was a kid in the 50’s/60’s.

[@notmrcool]

e

[@redstonegod296]

rush e

[@squirrel.]

You are 1st🎉🎉🎉

[@Facet_5_CUT_8XM]

This guy is too smart to be labeled as a “builder”. HES A FREAKING GENIUS!

[@prometheus-ii7030]

I'm definitely gonna be using that bus door in my own builds, thank you!

[@stevecarter8810]

I can't imagine the hell of animating the stop motion minifig with the revolving door