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Questions tagged [underwater]

Underwater robotics is a branch of robotics. Underwater robots can be autonomous, or they can be remotely operated. This is an emerging science, which has become more popular with evolving technology.

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Combining data from 9DOF IMU

My team and I are building an AUV and are planning to replace the existing 6DOF MPU-6050 sensor with a 9DOF Adafruit BNO055 sensor. However, we're unable to figure out how to combine the data from the ...
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Strategy for 3D path planning over large distances with kinodynamic constraints

I was hoping to pick your brains about a problem that even after much reading has left me baffled. My Application: For the sake of simulating underwater scenarios in very large environments (up to ...
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1answer
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How to localize an acoustic source underwater with a hydrophone array

I am working on an Autonomous underwater vehicle (AUV), and I do not know how to localize an acoustic source underwater I know that I will use an array of hydrophones but how can actually get the ...
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How to simulate water/ pool for underwater vehicle in Gazebo/SimScape?

I have tried SimScape and gazebo but I did not get a solution for simulation of a swimming pool. Can somebody help with the same? Do I have to create the whole swimming pool using simple rectangular ...
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1answer
102 views

AUV Lipo Battery capacity

I'm making an AUV that requires 15-20 minutes of operating time. I'm using 6 of these motors (Blue Robotics T200 Thrusters) for propulsion; I'm looking for 6S lipo batteries (22.2V) but i don't know ...
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1answer
53 views

Why the bldc motor not able to move my water boat?

I have a 1100kv brushless motor from dys with a propeller as shown. I have attached this motor to two pvc pipes joined together as shown and packed the electronics inside polyform to protect from ...
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0answers
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How to choose a motor for water surface vehicle? [closed]

I am about to build a water surface vehicle (a kind of boat). I was looking for different type motors and ruled out the stepper and servo motors. But I got confused between brushed and brushless dc ...
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1answer
209 views

Area coverage of autonomous underwater robot

I'm currently working on an autonomous underwater cleaning robot and would like your input on some navigation algorithms Problem: Wash the inside of big, open and filled tank, e.g. water storage ...
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1answer
105 views

UWSim Pressure Sensor Units

I am attempting to use the data Underwater Simulator (UWSim) provides through the ROS interface to simulate a number of sensors that will be running on a physical aquatic robot. One of the sensors ...
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4answers
783 views

How to localise a underwater robot?

I am building an autonomous underwater robot. It will be used in swimming pools. It should be capable of running in any normal sized pool, not just the pool in which I test. So I cannot rely on a ...
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2answers
608 views

Which middleware for IPC and multi-threading in a autonomous robot? [closed]

Aim: To use multi-threading and inter-process communication(IPC) when coding an autonomous robot. Platform: Embedded Linux (Yocto) Constraints : Limited CPU power. We are building an Autonomous ...
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1answer
899 views

Underwater ROV Variable Ballast

How would you guys recommend making a variable ballast system for an underwater robot? I was thinking about this problem earlier and I was trying to figure out if there was a way to make one that didn'...
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3answers
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Tracking Landspeed Underwater

I am hoping someone might be able to nudge me in the right direction (apologies for the long post but wanted to get all the information I have gained so far down. Basically I am after a solution to ...
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1answer
11k views

Water depth arduino sonar sensor [closed]

Just like a fish finder finds the depth of the water directly beneath it, Im trying to find a sensor that I can purchase for the Arduino that does the same. would like it to check up to 20 ft at least,...
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1answer
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Upgrading the motors on a SeaPerch ROV - more torque, or more RPMs?

I am looking to upgrade the motors for SeaPerch underwater ROVs so we can carry heavier payloads and more equipment. My question is, should I look for motors which have a higher RPM and lower ...
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11answers
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Preventing leaks in motor shafts for underwater bots

Whenever building an aquatic bot, we always have to take care to prevent leakages, for obvious reasons. Now, holes for wires can be made watertight easily--but what about motors? We can easily seal ...
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3answers
656 views

What's the most effective type of rechargeable battery when taking into account size / weight / Ah?

I'm looking to build an underwater glider robot that will need to remain autonomous for long periods of time, perhaps even months. Power draw should be minimal, and I'm thinking of including some form ...
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1answer
1k views

Choosing the right dimensions for an underwater glider

I'm looking to potentially build an underwater glider, a type of submarine that's slow but can operate on extremely low power draw. However, in order for it to work effectively I've found several ...