My DIY Submarine Dives As Deep As Possible 

5:50 Nice. 🔥

Adding a rear camera would allow for constant monitoring of the tether which might help to avoid tangling it.

My brothers, use a steel rope next to the optic cable. Connect them with heat shrinking sleeves every one meter to prevent such entaglements. Keep up the great work!!

Need a mesh or netting over the propellers to prevent things from entering them.

As someone who works with fiber, the fact it started working again after being sucked and torn open in the propeller is insane which led to the retrieval. You're incredibly lucky, fiber in that state is very rare to function and probably have countless cracks

Dobrze widzieć kreatywnego Polskiego youtubera z takimi wyświetleniami i fajnymi pomysłami🙂

to stop tanglement in thruster, you should try using honeycomb thruster guards. It significantly reduces tangling

I randomly stumbled on this video, and watching this makes me realize what an incredible time this is for creativity. The tools we have for innovation is mind boggling. The world literally becomes a sort of playground. I get that feeling when producing music, I'm sure these engineers get that same feeling.

You missed the opportunity to use a logitec controller

Impressive that the sub-drone even moved after all the stuff tangled in propellers.

For the home builder, fiberoptic is really expensive and breaks easily. If you watch the big work-class ROV teams, they've got a huge large-diameter drum they wind it on and off, to bend it as little as possible. I use RG59 coax, with an ethernet-over-coax adapter at both ends. This gives me good connection over as much as 1300m. I also put a stripped-down security system NVR in the ROV, allowing me to have real-time views from 8 cameras.

Dzien kuje, first of all. For talking english most of the time for the benefit of us. Appreciate that a lot. And awesome project indeed. looking forward to the next video!

Thank you for giving the US distance in Furlong, could not help myself and was laughing 10 minutes straight

6:29 Even CPSdrone got better controllers than ocean gate 💀

To avoid tangling, you can also add floating buoy to keep cable in the center and under tension.

"it swims violently" killed me

Panowie wielki ,wielki szacun.Emocje niesamowite tak jak praca włożona w ten projekt. Pozdrawiam serdecznie i oczywiście czekamy na część drugą 👍

Try to add a geiger counter or a scintillator (which is better in this case) on the next version of the submarine, to measure the radiation level under there. Sorry if I said something wrong, I'm not a native English speaker :)

What an adventure, I was afraid to see this being lost but it turned well, it so amazing that the fiber optic cable still worked. As a diver I can recommend you have a secondary rescue line for the drone, usually that would be mounted on a buoy in order to see it from the surface and slow release the line to avoid being tangle, and of course have a hard long line to pull it back to the top

this is the first sponsor i can actually use. i am very happi :)

Nice video! I do suggest checking the dB/dBm values on the fiber optic cable since it got stuck, it would be a shame if it lost connection on the third attempt.

Watching you guys handle the motor and the assembled sub in the test tank… glad you still got all your fingers!

Regarding the folks suggesting you oil fill the enclosure. If you want to pressure compensate, or simply pressure balance an enclosure, it's not as simple as just filling the enclosure with oil. You'll need to add a compliant bladder or spring assisted compensator to account for any air bubbles that may get trapped while oil filling. If you go the route of using a compensator, you get the added advantage that if a leak should develop, oil will leak out instead of water leaking in. If you remotely monitor your oil level, this can warn you that something is wrong and give you time to respond. What's often the most difficult challenge of oil filling enclosures is that all the components you have within the enclosure must also be pressure tolerant. Anything that's soft or contains an air space isn't suitable for an oil filled pressure housing since the oil will communicate the exterior pressure to all the components inside. This can include complex things like your camera, but also some simpler discrete components like crystal oscillators, electrolytic capacitors, and much more. component selection at the board level becomes a very important consideration when deciding whether or not to oil fill for pressure balancing or compensation. In many cases (especially when cameras are involved), it's more practical to use a one-atmosphere pressure housing.

Entering ecological deadzone. Are you sure whatever you’re doing is worth it?

The industrial design in this is phenomenal.

Might be a good idea to make the drone wireless, specifically Im thinking on keeping the fiber optic cable but instead of connecting to the drone you connect it to a wireless unit that connects to another wireless unit on the drone. You could then attatch the fiber optic cable to the drone using something strong like fishing line and setup a release mechanism that lets you remove the fiber optic line from the tether and easily pull it out while still being connected to the drone.

Thanks for showing off my CPS5 Drone in the last Video. Keep it going and to anyone else, you'll need to enter the Course because it's totally worth it.👍

If you could put some sort of tripod over top with a pulley on it you could keep the line going straight down the shaft. Then you need to keep pressure applied to that line. You might be fighting that a tiny bit all the way down but it would also mean it wouldnt be able to get tangled.

you should add a sort of mesh tube around the fibre, to prevent it from being worn against obstacles

You should add an emergency blast tank blow procedure, in case the drone loses connection since it's an expensive drone. you can use what divers carry on their wrists to float in case of emergency as guidance. just pitching an idea :), good luck.

Can you build a under water drone that mines the uranium? Please ☢️

Very nice graphics/animation to explain the tangle. Nice sub too.

So glad you got the drone back. Fingers crossed for the next go!

You have a TON of optimazation to do regards to traversing terrain. Design of the shell, sensors, control etc can all be added/improved. But you have made an impressive step !

Good job! Your close to getting to the lost river! 👻

A few suggestions. First, don't use your communication cable as your physical retrieval cable. Using a metal cable will ensure that you don't potentially damage your fiber optic cable. Second, guards over your props to prevent debris from getting entangled. Then the last thing I would recommend, add two pieces of tech. The first, a simple device attached to your reels like a buoy that keeps tension and prevents excess cable from being given. This would drastically help reduce any chances of your own cables getting caught in the props. Also, you can write a program that records your inputs and creates a virtual path for the drone. What this will allow you to do is create a program for the drone that will let it retrace it's steps exactly. The benefit behind this is that you can allow the drone to be able to calculate how to move along a path even without all it's functioning props.

You should add multiple 180 degree cameras to hopefully be able to see what's happening around the drone if you end up getting tangled in places.

The fact the drone worked at all, with that much tangling, is amazing Might need a distance based tensioner?

That's why you need redundancy. Double the cable, double the camera, emergency power. Program to swim up in case connection is lost. Additionally, you can add mesh cone on the back of the drone, to push away things and prevent the drone from getting stuck, while letting water through to keep the flow from the motors.

Seems like putting a fine mesh over the thrusters would be an easy solution to keep the wires and debris out - also adding a nylon sheathe to the cable should make it not only more durable, but somewhat more rigid too. My guess it that it should help with futute tangles

I think you should make a redundant communication cable, so if a cable broke/snapped, you can still recover the drone

Definitely add a rear camera. Maybe some kind of grabber to remove obstacles. And if it was in between size then you could still make the housing strong enough for depth plus restricted operating environments?

Seems like you need to add manipulators to help move stuff out of the way...and perhaps a backup camera that can see the body of the sub.

that's incredible! but an idea, put a net maybe like a 3d printed one and cover the back and front of the motors, shouldn't lower thrust much but it will protect both motors and the optic wire from getting random stuff tangled in there

That was some good piloting and decision-making right there!

Now this video is the reason why we love our engineering nerds, this is an awesome project. Hyped for the next adventure.

Once you have a drone that can make it to the bottom, you should take it to the ocean

You can add some emergency balloons that can help get the dron up if you lose connection. It could work by inflating the ballon when the submarine detects signal loss

You could develop some kind of sonic transmission. It should work very well in isolated mine filled with water. Just two sets of waterproof microphones and speakers - one on the submarine and one on the controller. Obviously it will not give you good video but should be enough to get submarine back up in emergency like that.

if you make the electronics capsule a proper airtight pressure vessel(doesn't explode with internal pressure) you should be able to pressurize the capsule to 90-150 psi with air while on the surface. This would buffer the capsule and reduce the maximum pressure delta the capsule sees. The more pressure you can get at surface level the deeper you can go before the stress switches to compression.

I appreciate the translations into American units besides the metric ones. Great video and awesome project!

gotta love the resiliency of fiber optic. this was a very exciting video

might I suggest some sort of Carry-on handle and or wheels so it can be moved more easily?

Add rocks at the front to help it sink using less power and use the propellers to control its movements. Use a latch though so it can be disposed off when not needed.

Using furlongs for the US measurement is ultimate BM and I like it.

Adding a very thin mesh around the propellers may avoid anything from entering them, but still allow water flow out.

It might help with the tether problems to use some sort of sprung coil so it always keeps light tension on the cable preventing it from randomly floating around and getting tangled, maybe make the drone slightly less buoyant to compensate the pulling force on the tether, also a backup camera to look straight back would help when retrieving the sub without needing to turn it around and maneuver too much, lowering the chance of tangling even further.

adding something like a thin webbing over the props would help prevent future wire entanglement issues, probably the easiest fix you can do just by adding a little bit without any major changes.

you deserve a million subscribers keep going!!

Maybe adding mesh covers/filters over the propellers would help not get things tangled in it, at a cost of some efficiency and power, which it seems you can afford.

7:14 is that a nuke

I think "swims violently" is now among my favorite phrases

You all are amazing! I never would have figured you would have such an exciting video about a homemade drone! Keep at it!

Super dron i fajny film. Takiego polskiego youtube’a to można ciągle oglądać. Powodzenia z projektami.

You might consider having a mesh go over the ports where the motors are to help keep them clear of debris, but nothing too small of a mesh or it will easily get clogged by smaller pieces of debris

Here is a dumb idea - can this be made to be a wireless craft? I do not know how much water attenuates radio signals but what if you lowered a transmitter/receiver designed like a plum bob - basically a torpedo shape that lowers only by gravity. Then it could be kept in close proximity to the submarine craft so that it might be able to operate more freely. Anyways thanks for the awesome video, super well done!

I have no idea what I'm talking about but if you put a kind of mesh infront of the motors, a very thin one that could help or stop wires or other small rope like things from getting stuck in the rotors.

I think it might be a good idea to add a floating tube every 1ft or 3ft such that it kind of balance out the gravitational force of the cable such that it will stay in the center of the vertical and horizontal shaft.

You try add a pole on the wire to keep it away from the drone a bit and also if you put 3 axis swivel, like a gyro on the attachment to the drone, then it wouldn't be impacted by the movement of the drone so much.

Ngl- I feel like the best upgrade to this design to prevent what you showed happened at the end to it with the cables and that random line from the mineshaft- is to put mesh guards around either side of each of the propellers to protect them from that kind of thing happening again. Other than that- this design my actually be suitable for doing what you ultimately want to do- and might be able to reach the bottom.

Adding a 360° camera... will solve the problemS !! Good job guys !! You will be surely on this business in the next years !! When you'll need an International salesman or representatives 😀, I'm here !!!

Relying solely on a single fibre optic cable tether is risky. Reenforce the optic line by wrapping a backup line to it. But mount the backup in a way to leaving some slack in the fibre optic cable near the sub only.

Rim driven thrusters would've saved you from the issue regarding random lines floating around, in the tunnel, since it would push the line through, without tangling around the thrusters. It won't, however, save you from the issue with sucking in your own tether cable. I've experienced similar issues several times on another drone. Guard shields is one way to do it, though you will lose a bit of thrust doing it...

I don't think most people know what a furlong is here in the US. It's a very obscure unit of measure these days. We just use miles now. Awesome video!

Would be really cool if you could attach LiDARs to map out in a 3d model :) Would be SUPER handy if you would be going cave exploring with this thing

Maybe put metal grates infront and behind all props. Yes you will lose a lot of thrust, but it should solve the tangling problem. I have no idea what you fiber optics are made out of, but a sleve of aramid will surely help strengthening it up. Also place a "wire guide" behind the connector, so there never will be the chance of bending the optics to the point where they might just snap. And as this is basically a underwater quadcopter, it needs a return to home function :D Ok, the last one is a bit silly, but my other suggestions could improve the design.

Using high performance car parts can also help form good seals like turbo gaskets and spacers. They are not “that” expensive but are designed to support very high air pressures and compression.

Great video! Maybe some metal grills over the prop intakes?

Maybe a piece of heat shrink every few metres on the fibre cable with a small piece of foam tape under the heat shrink. This would give the fibre cable a tiny bit of positive buoyancy keeping it straight and reduce the likelihood that the drone would rise up into the cable.

You guys are insane, thank you so much for the awesome video AND the free training course! I am super excited about this

Add a screen over the propeller "tubes" so nothing can get cought in them but can still push water through for motion

See the rope techs at 5:36 was pretty cool, I happen to be a rope tech myself.

Good setting for a horror game, exploring an old, abandoned, flooded structure with a somewhat sketchy setup (fragile fiber optic cable potentially getting caught on something) with weird occurrences (plausible deniability, but what if something is LIVING in the water? ooooooo~) and I even have a silly little 6-DOF game environment set up- it does space flight right now, but a ton of drag and some low-fidelity filters could give it a good watery vibe

The propelers should have a mesh for security reasons. And idk if it's posible add some sonar and/or radar and a basic AI for emergency back, disconecting the wires and go around automatically.

you should put a mesh of some type over all the water intake and outlets i think that would solve your cable tangling issue

i love how he sits there in front of the screen looking like a kid going try hard in call of duty

You guys should set up a pre-assembled umbilical cord for your optic line and a retrieval line!

I know you would loose some thrust but perhaps a mesh cover for the propellers would stop most tangles

That recovery effort was more exciting than a lot of movies 😂

you need to add a 360 camera so you can get a 3rd person view of the submarine. kind of like how some porches particularly my cayennes proximity sensor works. it shows a 3rd person birds eye view of my car on the screen. then you can avoid all obstacles, you should also consider adding thin fine steel mesh in front of the propellers to prevent nylon fishing lines or other small debris from getting tangled. good luck

Great fun watching this... well done guys... I need to build one (Trimix rebreather diver)

One idea would be to add spool of cable on the back of the drone that can spool out. It could also be of smaller diameter not meant to reclaim but In the event of an emergency to recover the drone then be cut.

To avoid a lot of power usage, a ballast system if you can calculate your depth range, pressure is more effective for going up an down. also, you can take down battery or steaming nodes, or have a line that has a connection or connection help IE liek a massive antennae anyways... a battery node system, could be helpful, or means of amplifying and direction a signal, so you can go down some of hte lateral shafts.. hmm

For the tangling, how about adding a mesh both side of propellers (no screwing it, maybe stick)

You should've put the cables cables into some protection layer, and made them thicker and stiffer so they wouldn't tangle or get stuck so easily.

I like how they went though all the trouble of designing and ordering custom parts, but leave but fiber optic extra super duper vital lifeline cable raw and exposed.

Polak potrafi wszystko, bez limitu. Jeszcze znajdzie duzo miejsca zeby poleprzyc. Pozdro!! I tak dalej.

I absolutely love the drone and I get this is about building the drone as much as it is exploring with it, but in this particular case I wonder if simply a camera attached to a weight and a strong tether like a rope or chain would be better suited for the vertical mine shaft.

Perhaps putting some sort of Mesh or grill over the Rotor assemblies could help prevent any unwanted debris from entering/coiling up in and around therefore preventing any steering problems.

Well done lads good work, exciting to follow along with you both. Result you got The unit back