Building a Hydraulic Lego Excavator

Building and testing a remote controlled hydraulic excavator with Lego. The excavator includes 6 motors controlled by a BuWizz 3.0 (a remote control and battery unit).
An electrical slip ring is used to connect the 2 track motors through the rotating turntable with the battery box. 2x CADA micro Motors are used to power the tracks. They are small, providing high torque, and having low RPM.
The turntable is moved by a Lego small angular motor for space reasons and because of the low RPM, which provides better control of the superstructure.
3x Lego Technic Powered Up Large motors drive one pump each. To make the small Peristaltic pumps, a Lego part had to be modified by drilling holes. The pump works with Regular Lego pneumatic hoses. It builds up a lot of pressure/vacuum, enough to operate hydraulic systems, and it works in both directions.
The Hydraulic cylinders are actually Lego pneumatic cylinders. They are not intended to be used with water as the metal parts could corrode. To avoid this, I used a mixture of windscreen wiper fluid and water. The system requires some air, as the 2 cylinder chambers are different in size and therefore require a different amount of water. Each pump powers its own independent circuit and, respectively, 1 excavator arm joint.
The PS4 Gamepad is connected to the BuWizz 3.0 Bluetooth Unit with an App called Brickcontroller2. The app allows the user to assign buttons of the gamepad to individual motors. The analog sticks of the gamepad resemble the 2 joysticks of a real excavator, adding more realism.
The design and proportions of my Lego digger resemble the CAT 390L, which is why it is in Lego minifigure scale.
The hydraulic system works without fluid by pumping air. However, the movement is not accurate and lacks power.
I made 3 custom parts that are 3D printed: a slip ring mount, a pump housing insert, and an excavator bucket. However, the excavator would function without these parts. The slip ring does not need to be mounted; the pump insert could be attached with sticky tape, and the Lego Bucket would still work despite being big. However, I greatly prefer using a custom shovel.
Chapters:
00:00 Tracks
00:16 Turntable
01:10 Pump
02:52 Arm
03:45 Controls
04:26 Bucket
05:21 Test
3D Design Software: www.shapr3d.com
3D Printer: store.creality.com/products/e...
BuWizz 3.0: buwizz.com/shop/buwizz-3-0-pr...
CADA Micro Motor: shorturl.at/bnpvN
Small Angular Motor: shorturl.at/BCKMP
Lego Large Motor: amzn.to/44fjuoz
BrickController2 (App to use Gamepad with Lego): bit.ly/3JypnV0
Slip Ring: amzn.to/3QIlBy4
Pipe: amzn.to/3QGl8fG
Please note: I get a commission if you buy via Amazon or BuWizz link above. Thanks for your support.
Where I get my Lego parts from: www.bricklink.com/v2/main.page
Music: Riffs For Days - TrackTribe
Ode to Joy - Cooper Cannell
​#bricktechnology
#legotechnic​
#lego
#asmr
#engineering
#excavator
#construction

[@angryexcavator]

I have been used for views

[@spaltmass]

And Ive enjoyed every second of it

[@SHRAPNEL_LEGO]

You did well

[@mazidul4902]

You did very well

[@mazidul4902]

Are you still angry

[@SHRAPNEL_LEGO]

@@TheErrorInBlack yeah, im being careful after that time. And still afraid of my spear gun

[@_QUGO]

The fact that the controllers jousticks work exactly the same way a regular excavators is really good attention to detail

[@CENREAPER-YT]

It's just the fact that controller's joysticks move in every direction.

[@rutgerb]

Ive heard you can even use them on a submarine.

[@loen9591]

@@rutgerbnahh 💀

[@CENREAPER-YT]

@@rutgerb why wouldn't you be able to in the first place?

[@sethdesilva]

@@CENREAPER-YT its a reference to the oceangate fiasco

[@NotSoAngryExcavator1]

I really like this channel.

[@angryexcavator]

How dare you stealing my identity

[@Nate2010]

I love the idea of someone role-playing as an excavator, using a screenshot from this video as a profile picture, and insulting all the videos, only to then have their identity stolen by someone doing the same thing except they're less angry

[@user-rh3hc9kp8c]

Lol

[@Tom.XFP8696]

​@@Nate2010yes

[@gaboxdxd3007]

Yeah

[@Brave_Little_Toaster]

As a person that runs an excavator for a living and loves lego, this is the best video on KZbin. I love that the controls are the same as an excavator would be, and that it actually functions.

[@Dev_2R]

I was actually thinking about how non-intuitive the control scheme he set up was, so kudos to you for learning that.

[@peterwithers3659]

@@Dev_2R After using it for a short while, it genuinely feels like an extension of yourself. It's very intuitive to operate

[@racer927]

​@@peterwithers3659 Armchair experience playing Construction Simulator on gamepad but I can confirm that you get a handle on the rhythm with both sticks when digging construction pits. (Although the setup is slightly different for me, left stick controls the turntable and boom while the right stick controls the arm and bucket.)

[@cullendevins6498]

I’ll second that! I imagine its the same feeling intellectuals get when they see the Mona Lisa lol

[@tombiby5892]

I rented a little excavator for 2 days. It was much harder than I thought to remember what control did what. Makes you appreciate how long it takes to get good at walking or getting a forkful of food to your mouth.

[@shroomzzz]

Can we all just take a moment to appreciate not only the best design, but the painstaking efforts he goes through to film the test fails, but 3D printing in timelapse? I'm in awe!

[@angryexcavator]

Filming the print took this son of a**** 5 hours

[@OnezKrs]

and 1 button :o @@angryexcavator

[@KittenRaee]

3D print timelapses are "set and forget" thing

[@blackkissi]

"What else can it do" I literally laughed out loud at the end. Thanks for the laugh. Another awesome build!

[@angryexcavator]

Very funny

[@mabot2459]

@@angryexcavator THIS ACCOUNT IS F*CKING REAL! 🤣🤣

[@Wakasman69]

@@angryexcavator Cool your jets and make us some tea and breakfast.

[@leroyspeelt]

​@@angryexcavatoreven a sentient excavator post more comments then brick technology, and its made by THE SAME PERSON

[@TonyBullard]

If I hadn't already liked the video, I would have liked it then.

[@Brick_Science]

I might be a little late to this, but CONGRATS on 1 Million Subscribers!! :)

[@hafizizhar4352]

Hi bro 😉

[@TwinBlades1]

Catch this ratio homeboy

[@BrickTechnology]

Thanks , likewise :)

[@SyamimiMohammednawi]

Amar amru amirul ainul ❤

[@shompakhatun5352]

​@@BrickTechnologyথগচিজগঙগ চগ ঠিকই দঠরঠ ততগুলো

[@John_Wick-Babayaga]

You are the first one who build a fully RC hydraulic lego excavator. Amazing work

[@bartybum]

Not quite, there was a Technic compatible product called the Aquabrixel which was a peristaltic pump, and they had an excavator as a product demonstrator

[@John_Wick-Babayaga]

@@bartybum that can be, but hes the first one building one himself Out of Lego

[@corythomas4427]

​@@John_Wick-BabayagaHis 3D printer needs to be made out of Legos

[@John_Wick-Babayaga]

@@corythomas4427 yes he should build one in his next Video.

[@bartybum]

​​@@John_Wick-Babayagawell, no he isn't the first. he used custom parts

[@Pumble27]

My father and brother are mechanics of heavy duty machines like this, and they always explains me how this works, but this video is really easy to understand. Thanks for the help

[@the40kboyz11]

$1,000!? Wow you must either be rich or hate money!

[@Pumble27]

@@the40kboyz11 is colones not dolars, KZbin is not using the correct currency symbol

[@vipxr]

@@the40kboyz11it's close to 1.88 usd

[@random_stuff515]

That is 1,000 costa rican colon. 2 dollars or 1.50 british pounds.

[@brq4cars]

NEW VIDEO?! Always nice to see Brick Technology’s high quality videos, even though they take a long time, but it’s worth it!

[@Dennis..-]

#relatebale

[@angryexcavator]

He's very lazy

[@brq4cars]

@@angryexcavator you’re lazy

[@Dennis..-]

😂

[@IgnitionP]

@@angryexcavator fr

[@DeathmetalChad]

Idea: Can you make a truck that comes with this set, in which the excavator puts the sand or whatever it wants to, and then the truck can go wherever it wants and drop the sand? Like a dump truck which has a bed that bends down to drop the sand, and has a flap on the end to stop the sand from falling out? Edit one: This sorta blew up?? More chance that @BrickTechnology sees this.....

[@user-up8rg4iv8w]

good recommendation, commenting so higher chance brick technology notices it

[@DOOM_SLAYER5840]

@@user-up8rg4iv8w nice

[@meenalroy794]

Kul rekmendishun

[@DeathmetalChad]

what do you mean?@@meenalroy794

[@DatsOdd]

Yea, a dump truck or a truck with a dump trailer would be a cool idea.

[@PestifeR]

This channel delivers hands down the most sophisticated and intriguing builds.

[@goretvaduyoutube]

ябэ такое несмок зделать

[@Zeigler_]

One day they are going to make a full car out of lego

[@Soldo66666]

They already did, only the car body tho

[@queeg6473]

Already done, mostly. Bugatti (the blue one) full size with a fully lego engine (hundreds of motors) but using a metal chassis.

[@EricWulfe]

bruh cant even joke about it lmao

[@brq4cars]

lol people will just hate on you, too bad

[@Zorro9129]

THEY ALREADY DID

[@fouss_8108]

Bad day + brick technology video = good day

[@Semystic]

I love the incorporation of 3d printed parts!

[@alveolate]

that sound effect when he shows the time lapse of a 3d print is just perfect!

[@KneppaH]

Those pumps are one of the best lego ideas i've seen. Simple, compact and able to generate pressure. Amazing!

[@t2hk_]

11 year old me could only dream.. Very nice.

[@nathanparcels4845]

This should be a legitimate set, no joke. Fantastic work

[@EMPSBladeKnight60]

the fact that you only had to modify 1 piece and make another to get a working fluid pump is impressive and makes me wonder why Lego doesn't have something like this for an engineer line

[@Zorro9129]

Amazing! Really makes me wish LEGO would make more sets using hydraulics.

[@tombiby5892]

It would have to come with a sealed container of Lego brand hydraulic fluid.

[@dabaumpl9839]

The outro is comedy gold 😂

[@monsterchannel24]

That's really cool! 😃👍

[@shanecormier1]

If you have kids, you must be a damn fun dad.

[@_cryobyte]

Reminds me of my middle school science project when I made a hydraulic excavator. Little kids wrecked it up before the end of the day 😂

[@SaperPl1]

Nice video. I always struggled figuring out how to present actual sand digging, but the way you did it by laying a full layer underneath the excavator makes sense. It's so simple

[@r0bb3d]

This might be the best Lego related video EVER. Advanced design, building and very funny. Great stuff!!

[@Vrozkrokop]

The speedrun of the design of the part was such an amazing flex. It made me so happy, the efficiency and skill and elegance with which you made a new part appear in the world, it was SO cool.

[@butwait]

I love that the bucket wobble makes it seems as though it's had 20 years of hard maintenance free labor.

[@fifis101]

The fact that your creations work so well is amazing enough but they actually looks so bloody good too! Awsome work as always!!!

[@nintendohead5416]

I have now subscribed to angryexcavator

[@angryexcavator]

Thanks

[@nintendohead5416]

@@angryexcavator I got a reply from the one and only angryexcavator! You just made my day.

[@ThatDayZKid]

I did too, and he better stay angry, he was so angry he dumped cat litter on the ground

[@davidbowser2395]

Now imagine if lego technic models were this advanced with a hydraulic system. It be a huge game changer like this. Would love this

[@kazminto9618]

The 3d printed parts in this and the last are actually so cool

[@macroglossumstellatarum5932]

Note that not all Lego pneumatic parts work with water. The switches in particular break, as my brother discovered waaay back. Unless they improved it since, which is very possible.

[@KneppaH]

There are no switches in this build. 3 seperate peristaltic pumps . Very clever design. The only lego parts are the pistons.

[@legolasnosense5746]

Like always, you bend the possibilities of LEGO's. thanks for always making this high quality content like its nothing!

[@RomanianGordonFreeman]

This needs to become a techinc set rn

[@CreativeMindstorms]

This is bizarre, insane, amazing and a whole bunch of other things! Crazy to see this concept work so well!

[@peerappel2012]

I have not a single doubt this is the coolest lego creation I have ever seen :-)

[@angryexcavator]

I use this as reference for my tinder profile

[@peerappel2012]

@@angryexcavator LMAO :-)

[@dr.johannesmunch891]

Great build and the prints look awesome. I personally would have gone for a direct hydraulic with one pump-cylinder per work-cylinder. Your solution is more compact indeed

[@thelegogearhead]

LEGO should make this a set

[@socialzombie94]

Excellent, I've been wanting to make a custom pneumatic excavator for a while but air power just doesn't cut it for speed, power and accuracy. Surprised by the amount of power those peristatic pumps can produce, it's a game changer. Thanks for the inspiration.

[@AtomBomb420]

I have to say that your cable management is amazing, also, that pump is certainly unique. (in my opinion, I have never seen anything like it)

[@Phlarx]

Peristaltic pumps are commonly used for small precise pumping, like in medical devices. As a bonus, the liquid doesn't touch anything other than tube, so it's easier to sanitize.

[@Viper69X]

Hey this is definitely so cool!! I think for your next project you should do something with trains like making your own cargo style train or making custom carriages and having them go around in a circuit with crashes or making your own express train line :D

[@pankulas]

That is great Idea

[@Carrotspy]

I'd love to see him make a Lego version of Maglev, as well as some gadgetbahns like Monorails (both regular and suspended)and Hyperloop.

[@chimerakait]

Im not gunna lie, hearing the exact same sounds that a real life hydraulic excavator makes, but teeny and high pitched, made me giggle. All coming from this accurate lego creation. Great job with this; It really shows how those machines work.

[@jeshkam]

Wonderful German sense of humor, much underappreciated, mostly by the Brits. 🙂 Best wishes from Poland!

[@joshuamwanzacapetown]

hey this is a great idea! maybe next you could try building a boat out of a hydraulic air system? love from cape town sa brother

[@enz025]

I swear you are some kind of mad genius, this is so cool! I would be really interested to see the amount of strength this build has in the arm. It would be interesting to see if you could get it to work with hydraulic oil, or maybe make some kind of counter balance FLT, maybe with like lego pallets or something.

[@Bomonga]

It’s always amazing seeing the innovative things you create

[@skyeroy29]

I hope Lego makes a bigger, more functional excavator like this with a bucket like yours. The excavator was always one of my favorite pieces of heavy equipment.

[@pankulas]

Can I ask you something? Can you male collab with LEGO and make your creations a real sets, I really like them

[@Teqnifii]

Maybe I'm out of the loop here, but what does it mean to "male collab?"

[@spaltmass]

It means „make“. What did you think?

[@Teqnifii]

@@spaltmass OH IT WAS A TYPO

[@pankulas]

@@Teqnifii I meant make not male, sorry

[@xmancamp]

I feel he should make a lego construction channel where he make lego construction equipment and builds things.

[@lederkneter756]

6:02 this is not really helpful 😅

[@duncanurquhart5278]

as an actual heavy equipment operator i have to say I'm super impressed! if you could fit a 4th pump in their i bet you could add a thumb and pick stuff up, make it much more practical

[@zerogrey3798]

I'd play with this for hours. Annnnd my daughter is telling me NO LEGOS ALLOWED, tired of stepping on my stuff scattered all over the place lol.

[@GuildOfCalamity]

This is currently the best Lego channel on KZbin.

[@sencer6331]

I'm watching you since your first video. Your videos is very good. Congratulations you have 1 million subscriber.

[@machineg4merg4m3r3]

This guy is a god... And his excavator has gained sentience...

[@dude_someshiet]

Truly an engineering marvel. You should get paid highly for your skills in an engineering company.

[@human840]

Lego company needs you

[@CZAnthonyX]

Im very impressed that you set up the sticks on the controller just as a real ex handles! Nice job!

[@arrjay3814]

I enjoy how you test the components before including them in the final build

[@trogdormaster1]

I just want to say how much I throughly enjoyed the epic excavator ending montage. It was beautiful.

[@kenzie5362]

Its a good night if brick tech uploaded

[@kenzie5362]

Thx for the heart ❤ -i love your vids man

[@Moxzot]

The hydraulic pump creation was amazing

[@rusTORK]

Just awesome! 3D Design and 3D Printer fit excellent! No parts? Just make you own! Don't be LIMITED by market!

[@techsbyglebbagrov7470]

Never forget to give your excavator drinking water, ladies and gentlemen

[@bengardiner4303]

Hey just a recommendation from someone who works on this type of hydraulics everyday. The rod side of a cylinder has less volume than the piston side because when the cylinder is all the way open obviously the rod isnt inside of the cylinder so you may want to add a water tank with a breather to avoid excess pressure build up when all of the cylinders are sucked in or to avoid the pumps running dry when the cylinders are all the way out. Otherwise great job love to see it.

[@justpret981]

I like that the author uses 3D printing to create his own details that are needed for this design.

[@drake52]

I think its really cool how you decided to make the arm hydraulically powered

[@MrBaquette]

Lego needs to hire this man

[@tysimon]

I expected the tubes to burst out, but no.... well done ! Pressure could go even higher.

[@angryexcavator]

This video makes my tubes burst

[@angryexcavator]

This video makes my tubes burst

[@tysimon]

@@angryexcavator ROFL

[@monowarabegum1443]

@@angryexcavator Why two times?

[@lachlanparker570]

It's just a glorified spoon. I love it. And seriously, using water makes perfect sense. air can be compressed, but water cannot. Good call, and good execution.

[@biosaber585]

i love how your counterweight is all the equipment for making this operate. Which in this case works exceptionally well considering the fact yknow.. it's lego

[@Nerdtendo6366]

One of the best parts of Lego is the fact that it’s modular so seeing him just cut wires and makes 3D parts is actually really funny to me

[@AwesomeDomi1]

Ayo congrats on 1 million subs!

[@SidusBrist]

It's funny how my first ever lego set was an Excavator... just not a working RC hydraulic one 😱

[@MazeFrame]

Imagine if Lego could build an excavator this good looking.

[@neronedemon]

"Taming the beast" got me rolling on the floor

[@just_Ro]

I've always wanted to know if LEGO pneumatics could be used with water! I've not only showed me they can but also showed how! Very impressive

[@elcheapo5302]

Just like the old Technic motorized excavator...except yours actually WORKS!

[@SpamNorris-wb7gq]

Tbh, it seems like the center motor was struggling to stay balanced on rotation, but that 3d print to gap close and fit was clean. Also really cool use of the hydraulics. I would love to see a build that demos the use of the servos as well. 10 out of 10 would watch again

[@swimm8329]

I think i may have just fallen in love with a lego excavator.

[@SharkNinjaBlueStar]

I would have never in a million years thought that I'd see a functioning hydraulic system on a Lego excavator...

[@cx019]

You sir, bring this lego game to a whole new level.

[@FolloweroftheWay-Jesus]

I can imagine you screaming IT WORKS!!!! after finishing it! Good job sir!

[@lildreng]

Adding the touch of humor at the end catapulted this video from great to awesome. Bravo, keep at it!

[@janrothen]

Better looking than any Lego model.

[@DEVIL_BRO3]

Brick always has a way to bring a smile on our faces! Amazing work

[@Tyrinath]

Humans, given enough time and resources, create wondrous things.

[@glowytheglowbug]

damn always wanted to buy some lego slip rings lol for a rlllly long time nice to see you make one!

[@kevin71127]

this is easily becoming one of my favorite channels on youtube.

[@seb2721]

I love the small 3D printed additions!

[@ismailkehilan5425]

Give a hand to this man,he made his own lego peice with a 3d printer 🖨

[@clockFox09]

It's finally happening, he's making custom pieces, who knows where this will lead... Keep it up dude, awesome.

[@LineOfThy]

i love the build sections, they're just so satisfying

[@KeppyKep]

You know Caterpillar's marketing is successful when even Brick Technology does a non-greyscale build!

[@humbleyourself]

imagine having a cool dad that makes stuff like this .

[@lilacocto9103]

The concept of a Sentient LEGO Excavator typing angry KZbin comments is frickin' hilarious

[@tgbrfv38]

Wait this shoulds be a series of its own, like i would love to see a firetruck built with this level of detail.

[@Roze_aye]

Im telling you. its juat a matter of time before this man has an entire collection of these things, and starta actually building miniature stuff with them. like imagine if he actually excavated a portion of his backyard, dropped some water pipes in with a crane. covered it up and tamped it all down, and then began paving a road

[@spacehunter2018]

something like this would make a great lego education kit

[@summitupman995]

My favorite video of yours so far. Absolutely wonderful. Congrats on 1M subs!