Building a Lego-powered Submarine 4.0 - automatic depth control

[@BrickExperimentChannel]

You can read more details of the building process here: brickexperimentchannel.wordpress.com/rc-submarine-4-0-blog-post-series/

[@qrygamer]

@SF.shadow Cat difficult, cuz the weight can be offset too much to the front, so BEC would need a claw on the front and back. Even controlling the weight shift doesn't come easy.

[@smaug131]

@@qrygamer have a weight on rails that can move back and forth, connected to a sensor that can sense the angle of the submarine with another PID controller?

[@smokycurves4232]

Damn the new challenger deep sub looks nice

[@qrygamer]

@@smaug131 that can work, actually. As long as u have a big-enough container and a slider that is synced with the claw. Difficult, but easy in building. U won't need a second sensor, that will start complicating things, and if you have an open area, can be easily added in.

[@monikaczarska6475]

where you buying those lego parts

[@PabloEdvardo]

Extremely cool. The visual clarity through the flat plexi in the front was actually astounding. This is a great proof-of-concept for a low-cost underwater remote filming rig.

[@DAS_k1ishEe]

"Low-cost" if you do not include in the LEGO xD

[@etaashmathamsetty7399]

@@DAS_k1ishEe lol yeah Lego is kinda expensive when it comes to the electric stuff

[@ben5515]

Low Cost if you don't include the kilogram of tungsten pellets he threw in there for whatever reason.

[@danieldusentrieb4082]

....

[@Egerit100]

@@ben5515 to keep the sub from flipping since he has no roll controls

[@brotosstm4379]

Genuinely kind of ridiculous how far this project has come, I'm deeply impressed and proud

[@danteteeter6567]

hehe, "deeply"...

[@quantumpilot6843]

deepyly impressed BADUMM TSSS

[@frikifectonotengo6609]

"Deeply". ;) I came for the submarine, I stayed for the humor.

[@danielbuchanan5327]

As a qualified Submariner I appreciate the effort and time you put into this build and video. Getting into legos with my kids and a project like this would be so awesome.

[@letsb3nameless665]

awww you should do some diy stuff like this with them, they would love it

[@bake4795]

@@letsb3nameless665 this may just be me but this is a bit above diy

[@letsb3nameless665]

@@bake4795 not really, the dude in the video did it himself. might be above the level of working with children, at least for the waterproofing, but i bet with some smaller electronics projects first, this can be worked up to.

[@TheAudaciousAdventurer]

@@letsb3nameless665 As a software engineer I agree with the other dude.. getting the python code working with the embedded processor will most likely stop you in your tracks till you learn that side of things.

[@letsb3nameless665]

@@TheAudaciousAdventurer yea i guess it would take some time to learn python. but when i was a kid i wished i could code something with my dad, so if i ever have kids ill try teaching them scratch, and then python

[@tarjaau]

10/10 Much safer than the Titan submersible

[@Bogdanovici-real]

LOOOL😂😂😂

[@A_Random_Guylmao]

UNDERRATED COMMENT 😂😂😂😂😂

[@bh4vvy33t]

Bro 💀

[@bocilgaming5701]

hahahah, wait..... broooo💀

[@Some_Stranger]

Fr

[@gabrielmosoiu243]

It's incredible and inspiring to me that you've gone from "how fast can I make a lego wheel spin" to making things like this. Not that there's anything wrong with asking the "simple questions" but it's really a beautiful thing to get so SEE someone come up with creative solutions to make their work better. Very refreshing in our time. Love your content!

[@Seastar613]

kzbin.info/door/J_hxJWHl-mIjJBSF-UvkWQ

[@nochan99]

TIP: Use acrylic cement rather than superglue. It will actually fuse the parts together forming a much strong er bond!

[@jamesheaton5421]

True, but it also means there is functionally no chance of recovering the parts should they decide to scrap the project or if they place a piece wrong and don't notice til it's dried.

[@richardbrobeck2384]

Yep for sure Because I had a Kit that came with diffrent orings and the cement to glue them .

[@kevinm4664]

@@jamesheaton5421 could just cut the end off for minimum damage

[@fourswords77]

While that probably would be useful in some scenarios, I dont think these experiments are encroaching on the limits of superglue

[@copiusgrimus6671]

@@jamesheaton5421 no he can just cut it in half

[@renehasselmeier9866]

30 years ago I tried making a Submarine from Legobricks and Pneumatic Psarts.I tried to create an Air Bubble in a separate Chamber. It did not work that well, as connections between Bricks were not waterproof or airtight. It was a Fun Bathtub experiment. You completed it right and i can now see my Childhood Plans working as intended. Thank you so much!

[@buggletude]

This is incredible. I'd love to see you test it's max depth. You could install some LEDs so that it the camera can still see at increased depth and tether it so that the sub can be retrieved once you lose radio control. Taking it to a lake should give you the depth and the relatively still water you need in order to test it safely

[@GeomancerHT]

It would be great if they send a camera down, and have a remote wifi antenna that floats but with a very thin wire so it doesn't impede submarine movement.

[@atlasworldbuilder8246]

All in favor of having our guy build a fully-functional LEGO R.O.V.? :D

[@mariasirona1622]

Luckily we have a _lot_ of lakes in Finland. And when i say a _lot_ i'm not kidding

[@weasel4589]

@@mariasirona1622 Spoiler: Finland doesn't exist, it's just one big lake

[@kathybramley5609]

@@GeomancerHT There must have been something like that to get the shot of the sub captain minifigure anyway.

[@MattTester]

I was already impressed with the syringe being operating using a Lego motor, then the magnetic drive and everything else means this is probably the most impressive thing I've seen this year. I wonder how much it could be scaled up...

[@MastaSquidge]

Well it turns out you can scale this up to nuclear submarines.

[@dwrgdeh9996]

@@MastaSquidge hahhah, that's a good one

[@flethacker]

@@MastaSquidge we are going to need a bigger syringe

[@MattTester]

@@MastaSquidge Well damn I had no idea those were made using Lego. Amazing.

[@ItsMeChillTyme]

im just wondering if its possible to put like a roller in the magnet that can recess... like those tunneling drills have them.... that way it will reduce the friction even more and be more efficient while also sticking to the plexi.... even a small trenched track could be inset so only the whell/roller descends into it while the magnet rubs against the tape on glass to hold it there. That would make it even better, all while no dealing with waterproofing. But that all depends on either successfully sandwiching the magnets and roller or CNCing a brittle magnet to hold a roller, not the easiest thing in the world.

[@BeyondtheBrick]

Another masterpiece!

[@heastner]

Oh my god! You’re here!

[@KiLLJoYYouTube]

Another piggyback comment!

[@Mr_Buzz_Aldrin]

Happy 10 year anniversary, and Congratulations on 1M subscribers!

[@Hackanhacker]

Ohh yes

[@exa0710]

@Don't Read My Profile Photo ok

[@StopMoshin]

this dude cares more for the safety of his lego minifigures than Stockton Rush did about actual humans

[@logandabrute]

kzbin.info/www/bejne/eIHNmn13lMp-idk

[@DaJhowwik]

fr fr

[@MLGgames_official_YT]

Fax

[@The_Dr_Fate]

​@@MLGgames_official_YTwut

[@OGbobbylocdogg]

It was sabotage. The communist.

[@meneermankepoot]

Even though that water was shallow, in the footage it looked like it was a huge underwater cave. Honestly amazing

[@dannyhussain5489]

This part stuck out to me the most too, what a world under there

[@Caligari87]

0:30 My mans legitimately using a lego router jig this is amazing 10/10 engineering. Love it.

[@blackkissi]

I chuckled at this section as well :)

[@chinitoide]

5:38

[@ljepic9541]

You never fail to impress me with these awesome builds

[@theawecat27]

@Don't Read My Profile Photo why would i?

[@vipervision]

@Don't Read My Profile Photo thanks for telling me

[@channel-nb7vx]

@Don't Read My Profile Photo your channel is shit and I hope you get roasted in other comment sections.

[@channel-nb7vx]

@Don't Read My Profile Photo and also kudos to you for using reverse psychology to kids

[@channel-nb7vx]

@Don't Read My Profile Photo your videos are also basically the same and you’re milking icons to death. Face it, you will never truly get actual attention from people other than kids.

[@SHAHIDKhan-bp5nz]

Everything about this video was awesome from the way you designed the submarine, to the magnetic coupling. But the best part of all was the underwater view as the submarine traveled. It looked otherworldly

[@mtkoslowski]

Your mechanically isolated and waterproof propulsion system is amazing and the whole project deserves top marks. Well done!

[@arroz9537]

pretty satisfying, you really put this at the most of a submarine, and it's amazing how a river can look like another world from the submarine's view

[@fangthewarrior]

I like how everything in the video seems so large, the light shafts and vegetation makes it look mystical!

[@JoeOvercoat]

Fish Life!

[@B0M0A0K]

What a great project and a great video. I was beginning to wonder if the stream was dead until the fish swam past. Wonderful design and implementation.

[@tailsgamingchannel8554]

this man went from beginner to a master in lego submarine creator this is really impresive how he made it from start to a new level with different functions that he uses

[@OlaftheGreat]

Using powerful magnets instead of a hole for the shaft is actually a brilliant idea

[@henriquealmeida348]

It's a common thing for those subs

[@grhmprks]

Similar principle is sometimes used in pumping liquids that are corrosive and would destroy a seal around a shaft.

[@evanthefoolish]

⁠pppot

[@iantaggart3064]

You have a knack for showing how Legos are more than just toys.

[@animemusiccompilations9816]

Ahhh, I’m sure everyone here who’s had a Lego sub remembers at least one time they got in a tub of a water or pool with their Lego sub and pretending it dive or propel around. The memories and here we are with a creator that actually made a Lego sub, granted the Shell was not Lego due to flotation and water-proofing reasons, but I’m glad the mechanics were Lego which goes to show how brilliant the ingenuity this creator has accomplished once again for this 4.0 model. Keep up the awesome work you’ve done.

[@deerpoob]

I found the syringe to control depth to be particularly fascinating

[@miladinseratlic5984]

i don't even understand how that works because from my noob point of view there is always same amount of air trapped inside this thing??? :D

[@MikeSmith-vb8ul]

@@miladinseratlic5984 It's not the same amount of air/water, buddy. You got it all wrong. The syringe is _strictly connected_ to the water outside, and is not merely "pushing air around". It is either pushing or pulling a specific amount of *_water_* from the *_tank_* to set the *_depth_* of the submarine *_as intended_* 😒

[@miladinseratlic5984]

@@MikeSmith-vb8ul OMG... little blue hose, i didn't even saw it until now... thanks!

[@aidendoesstuff185]

@@MikeSmith-vb8ul they didn’t understand it? Okay? Just explain it to them. No need to be snarky about it. Damn

[@contingenesis5126]

@@aidendoesstuff185 and he did that?

[@lehellenart4112]

Your lego submarine building skills have improved a lot! Thats an amazing submarine

[@gabrielkong7174]

The engineering behind this submersible is amazing.

[@MagnusFeirenbacher]

I love how these just keep getting progressively more sophisticated.

[@Diamondusa7]

No you don't

[@MagnusFeirenbacher]

@@Diamondusa7 But you do

[@Galinjins]

In part 5 he will make his submarine nuclear powered and capable of launching ICBM'S underwater

[@mayonotes9849]

Lego mini missile sub with a 1kg worth of explosives.

[@chromaphasia453]

Would definitely love to see the depth it could accomplish! Maybe add a bit of code, if it hasn't received any kind of input for 5 minutes, to push out the syringe. That way, if it gets too deep and loses contact with the surface, it'll bring itself back into range automatically. Maybe attach a rope to it, so if you take it out to a lake to really test its capabilities, it won't get swept away by a current.

[@Galactipod]

Though I would like to see its crush depth, if the creator can afford to lose the parts.

[@bob-xy1bd]

@@Galactipodhe probably can with the amount of money made the 4 videos hes made about lego submarines

[@MrRedstoner]

@@Galactipod I mean you don't actually need the internals for that. Just attach a string to the camera, and fill the body with enough ballast to just sink, no need for the electronics

[@jimeagle5483]

I would add a Spring to the syringe as a fail safe.

[@AntonioZorro]

​@@bob-xy1bd exatamente

[@divye.ruhela]

This is the most amazing thing I've seen on the internet today 🤩 The Captain seems to be having the time of his life! Crusing through those waters with that music in the background almost seemed like it was hyperdrive-ing through space with starfields (the bubbles) passing by.

[@Sharon_McCluskey]

Yes me too

[@bluecoolfilms1940]

To go where no Minifigure has gone before.

[@RickOShay]

That buoyancy system is brilliant!

[@Dynamic_Flyer]

Very neat PID controller implementation to keep the depth constant automatically. The magnetic drives were excellent too. Good work!

[@tillscheller]

Interesting how you went from your first videos to this. Most entertaining to me is always see passionate people in doing what they're doing best. The journey within the river is a piece of art.

[@WingMaster562]

Nice to see experiments and it progressively gets improved every iteration. Have you considered adding fins to stablize it when moving?

[@sweepstakes91]

Always wanted to make this in my childhood, in a college fest we made something (far more inferior) and we failed. Kudos to you!

[@newswang1217]

太厲害了！這根本可以當作機械系的研究專題😂😂 6:47 python code！！！謝謝你！！！無私的分享是最大的美德，我很感激 By Taiwan students 🙌🏻🇹🇼

[@thuongbuivan8089]

Xin hỏi ,mã code python dùng vào mục đích gì vậy ?

[@newswang1217]

@@thuongbuivan8089 python是其中一種程式語言，將它透過電腦輸入到晶片裡，透過晶片讓機器、馬達運轉

[@thuongbuivan8089]

Ý của bạn là dùng nó để lập trình cho nó bơi 200m tự động mà không dùng điều khiển đúng không

[@OddJobEntertainment]

This is one of the great things about the internet. We're able to see incredibly inspiring projects that influence future engineers and builders.

[@LondenTower]

i love how advanced those submarines have gotten over the years. hecc, I can't believe this version actually has a computer on board. (i know it's just a raspberry pi, but that's still a computer.)

[@Seastar613]

kzbin.info/door/J_hxJWHl-mIjJBSF-UvkWQ

[@galenperson]

The captain uses it to look at the depth

[@mikedonnan7181]

I'd rather be in this than the Titan

[@mrmiki351]

Naahh thats foul 💀💀

[@RoyalArthurio]

You make it look so easy. I bet just getting the weight of the pellets right and getting it to stay level in water was non trivial :D Such a nice job with the target depth tuning. Also getting around the drive shaft leakage problem with with magnets was super smart.

[@MrAdannor]

Yeah. And keep in mind that's v4 - figuring out every piece of machinery to put into this was a long build up of past iterations.

[@ranaoblivious2122]

Amazing! The view from inside the mini-submarine looks beautiful. Maybe adding a fin will help the submarine to traverse underwater better, increase stability and improve control.

[@3dgar7eandro]

It's this for real?! It has got to be one of the Coolest gadget ever created!!! 😂😂👌👌👌

[@citrusjuicebox]

The sounds this makes underwater are incredible. Reminds me of Soma, or maybe Soma should remind me of this.

[@PurpleLightsaberAlex]

Soma was awesome. It still gives me the hibbie jibbies when I think of it.

[@aortaplatinum]

It's like SOMA x Iron Lung with a tiny bit of Nadia Secret of Blue Water

[@luska5522]

Try Subnautica

[@Sub-Atomic]

Barotrauma for me.

[@bfair6284]

Only missing the sonar sound effect to become a U-571 movie 😄😄😄

[@vanntooot]

I swear it's only a matter of time before you build the first fully functional Iron Man suit out of plastic bricks

[@corschipper1472]

Lego man

[@bob-xy1bd]

@@corschipper1472THE Lego man

[@thefirstsin]

@@bob-xy1bd Holy LEGO Man of Steel

[@eastoforion]

having watched the progress on your submarine projects for a while, this felt like an incredible breakthrough in capability! would love to see the addition of dive fins and rudder eventually for more highspeed maneuverability :)

[@joshuapatrick682]

I like the part where he made it a cylinder of “composite” then glued the end cap on, definitely proving that is the best design not just the cheapest and easiest to produce.

[@bricklejar]

Can't believe £200,000 was spent on a sinking sub with the same controller and this cost around £100 and did the job just fine

[@wyatt-mv6pd]

I get what your saying but making a submarine capable of reaching the insane depth of the titanic with people aboard is a lot more complicated than this. This ROV would implode before it even got half the depth.

[@ADRIAN-zh4ti]

@@wyatt-mv6pd half depth? 2000 meters? Lol 10 meters i would rather say

[@jenevivelancia3012]

@@ADRIAN-zh4ti For a fun comparison, 2000M depth is approximately 190 atmospheres or roughly 3000 pounds of pressure per square inch. That would be the equivalent of balancing a Toyota corolla on a one inch wide section of the glass.

[@lowqualitymagic]

@@wyatt-mv6pd the problem was that these dudes were billionaires and they were told beforehand that the submarine wouldnt be safe for going down that far, and the guy that warned them about that got fired for it

[@moo1172]

That lake tho

[@ahmetdag5600]

This would be a very good school project for electronic and control engineering students. Good job. You inspire people with showing many things can be built with Lego and household objects, especially for engineering students. Edit: thx for codes by the way.

[@hamjudo]

I think he started the channel while in highschool or maybe earlier. He is probably a couple years into his undergraduate education by now. I am assuming he chooses major projects that can be used for college credit, and then be turned into a video for the channel.

[@EddstoneOfficial]

Great work, you always make me happy with your creations! Edit: Thats a really fast submarine!

[@jasonblok7360]

@Don't Read My Profile Photo shut up

[@sayeeds8836]

@Don't Read My Profile Photo don’t shut ur mouth 🤫

[@Melloww2000]

@Don't Read My Profile Photo who would fucking cares to read your name?

[@Mojit00]

@Don't Read My Profile Photo ok i won't

[@runehansen9348]

The video is speeded up

[@luistentindo6334]

This is an inspiring, gorgeous project. Visually, and STEAM-wise. I especially loved the close up of the Captain! Thanks for making this awesome video.

[@mayonnaisejake7191]

3:48 Dude the new Iron Lung update looks sick

[@badcon_ten]

Bro iron lung dlc the abandoned earth plot: the people in space learn to travel space time and find earth again in a different universe

[@racer927]

​@@badcon_ten Iron Lung: Terra Crimson

[@Apokalypsos81]

That underwater footage was incredible! Would love to see in in full length and real time!!

[@AverageMichaelJordans]

Something I would absolutely love to see with this would be features for longer-range missions. Equipping it with an FPV system and long-range controls would be really fun to see!

[@josephdavis2695]

My thoughts as well. So many small-form-factor LRS control setups available these days… coupled with HD FPV (they’ve done amazing things with reducing latency, and with a sub it wouldn’t be a huge deal anyway). I was thinking waypoint pathing, or LRS. This is so cool.

[@HyliRelaxed]

I spent 21 years on submarines and this is cool as shit. Well done hats off to you!

[@PiotrBarcz]

I love how simple this thing is, and it really can move! It would be cool to have a tag game underwater but have a live camera feed so that you can chase other people's subs around! You might be able to make this thing even better by adding bigger batteries and more of them instead of tungsten ballast, more power with the same weight!

[@acceleratorgaming]

This going to the titanic?

[@kamilawawrzynska2090]

I hope it doesn't implode

[@H-a-k-a-r-i]

💀💀💀

[@theonewhowatches3]

I’m pretty sure this is a better sub that the other one.

[@aarongregory4980]

@@theonewhowatches3More thought went into this one that’s for sure.

[@darkseid1358]

Whatever! Try not to use xbox controller.

[@jasonsp8210]

You are a genius. The concept the knowledge, the skill and attention to detail. It shows a real commitment to the project. The road to this end project would have been long indeed. Well done super impressed 👏 👍.

[@lolo27234]

These videos make me wish Lego was pushed more as a edutainment because these videos are so cool and I feel like this kinda stuff can help get kids into engineering

[@davidstuart4915]

absolutely, would be transformative to launching children to great careers - Elon would deffo approve :)

[@reverse_engineered]

That's very cool! For the next iteration, consider adding heading control using a gyroscope and magnetometer. I added it to my combat robot and it really helps to keep things moving in the correct direction. You should be able to get all the sensors you need on a single board that can plug right into the Raspberry Pi and communicate over serial or I2C. They are often referred to as a 9DOF IMU.

[@bigfatopossum2974]

This is exactly why it pays off to duly wait for your videos. Seemingly every time you deliver a master class in ingenuity and love for your hobby and it shows. The underwater visuals werde absolutely stunning. Thank you for using your gift to grant access to this unseen and probably easily overlooked world. Simply beatiful!! Thank you

[@phmfthacim]

I just love how clean your projects are

[@simonblc8732]

What a technical achievement for version 4.0! Legos do have their limits, but I love this mix of skills. All that's missing is the real shape of the submarine! Well done!

[@Dmytro_Bricks]

I always enjoy the moment when you test the sub in the river!

[@MegaOlavo]

4:02 Bro it looks like Iron lung, also you make very good content, keep up the good work.

[@rebmcr]

I think Hull Volume would be a good addition to the spec list in the description, in order to compare with the displacement. It's 2.376 litres by my calculation!

[@PilotoMAF]

Your TRL index is higher than most videos I've seen about DIY submarines. Great job.

[@OliviaSNava]

I would be interested seeing this float around a large lake or the ocean with you following along in a boat. I don't know how much your budget is for this channel, but that sounds like a very fun idea. Great work on this, your iterative designs have been very cool to see.

[@juliusvalentinas]

He's got 7 000 000 views he's a millionaire.

[@Simrasil_]

Every iteration of these lego submarines is more amazing than the last, impressive stuff man :D

[@creylo200]

The underwater seascape is absolutely gorgeous!

[@alexanderkiss6734]

With each submarine model it gets significantly better. Superb Job

[@mykstreja8648]

This is just the kind of toy I would have loved as a kid, exploring the rills and swamps near my family's home. Of course, certain tech advances hadn't been made yet, like phones were still attach to the walls and color TV was a new thing. 😁 All the same, 584 lines of code to run that thing? That takes it out of the realm of toy, doesn't it? You have my respect.🤩

[@justinc2633]

i wouldve guessed half that many lines wouldve been needed

[@rc-fannl7364]

This turned out much better than expected, nice work

[@monetary_episode494]

I've followed this since version 1, Tupperware to a custom acrylic shell. Direct drive to magnet drive. Great job with the sub.

[@stefanreimund7630]

One of the best lego Projects I have see. So far. Great engineering.

[@abicus3502]

Ideas: 1. Make submarine bigger, more powerful, and more durable. Use it to explore big lakes, rivers, public pools, whatever: - more Lego motors for faster speed and carrying more mass, or motor bought on Amazon and connected to Legos (nobody will blame you) - bigger container to fit everything 2. That's another very very ambitious idea: antenna relays. This will probably help make your submarine truly long distance. Simplest way is to just take two different antennas, and make one relay signal of previous one. And have the sub accept signal of all of them, OR-ing it (if at least one antenna connects, it will work). Might seem like not an elegant solution, but I think it requires the least programming. You can place the relays along the river by hand, and it will greatly extend your range of control. The more ambitious idea is to make the relays placeable by submarine. Make few mini modules connected to the sub externally. It should have a way to connect and disconnect them. Need to find simple way like magnets or whatever. Modules need to be neutral buoyancy, and contain relay antennas and other stuff to relay the signal. Maybe ways to attach to the environment are needed, like anchors. Maybe it's unrealistic to expect this, but it would be cool. 3. Create Lego gripper. Simplest way is to create "jaws" in front of the submarine, opened and closed by engines with gear ratio exchanging speed for power. Maybe try catching fish with this?

[@linkinmylog]

The balance of super simplicity and technical complexity of this sub its outstanding.

[@WvlfDarkfire]

It's like you could build a nuclear robot completely out of Legos. Most impressive 👏

[@WhosThat2876]

I'm declaring this the coolest thing I've seen today and it's only 7:53 EST

[@kyles3572]

We need more of this 🤣 just go to random lakes/rivers, I could watch you exploring underwater for hours

[@lukassimonavicius5218]

I totally aggree, more videos of underwater with that music

[@MarcBossYT]

This channel is the DEFINITION of worth the wait

[@john849ww]

That was absolutely magical and lit up my inner child's imagination and wonder. Thank you so much - I will be watching this video several times more!

[@Plotnikkk]

Прекрасный проект! Идея с магнитной передачей просто порвала мой мозг, это никаких тебе сальников и вечных течей... Также крутая идея с шприцем.

[@saxenapawan5716]

This is by far the best sub-marine video I have seen on youtube. Exceptional work 👍🏻

[@theawecat27]

going through the stream was beautiful! these submarines are getting so impressive

[@hellokittyyy480]

Your video made my day a little better.

[@Mandrag0ras]

It's amazing how compact and functional it is. Much better than the previous one.

[@zaidizainal2495]

YES! THE RETURN OF THE CAPTAIN!. I've been waiting for this series for so long since the 3.0 release 10 months ago. Thanks, the child in me really thankful for the joys. I mean not literally there's a child in me.

[@azkieel5323]

I still remember the pitcher submarine. The lego mariner have come so far. Nice video as always and looking forward for new projects or concepts.

[@ieatcrayons6389]

oceangate reference video

[@Akklipz]

Suddenly was reminded of this amazing vid

[@Caligari87]

You should upload the full 20 unedited minute river run video. Make it unlisted if necessary, but I think a lot of people (myself included) would find that relaxing and fun.

[@rabbitenjoyer6320]

Agreed this would be cool and relaxing

[@duckyblenderold]

good news! I've made a comment in the blog and this is now a thing! (link in desc)

[@Feraligono]

@2:50 omg PID Can't believe that's something I only learned through video games.

[@zhanglihussey8222]

I learnt it from b2studios

[@martyb3783]

Your magnetic water tight coupler is genius! Very interesting video!

[@joeysgarage7963]

This is soooo cool, love the depth sensor connected to the syringe

[@maltmatus]

Это просто офигенно!!! Съемки просто шикарные!!!

[@Element4ry]

The underwater footage with the sounds of the sub was out of this world! Such amazing view. To think it was just ordinary shallow stream or pond maybe.

[@yanyanso]

Watching the underwater footage made me want to be a fish, ngl.

[@Lucasisgone]

How is this guy not an engineer

[@shannongriffin5520]

That is truly amazing, would love to see a larger version to go much deeper ❤️

[@waylonk2453]

This is an amazing creation, well done! Brilliant idea using the magnets and smooth tape to drive the propellers on the outside.

[@fedegalla1996]

Still better controls and safety than the Titan

[@requiemTA]

Lmao

[@KiranSaeed-u6c]

❤