Radio Controlled Lego Submarine

In summary, the conversation discusses a blog post series about a RC submarine build, with a focus on the radio-controlled aspect. The builder was able to salvage a toy radio controller with a low-frequency transmission of 27MHz to overcome the challenges of radio control in water. However, the maximum range was only 3 to 4 meters and attempts to improve it through antenna and receiver placement were unsuccessful. The build also involved python coding for a Raspberry-Pi and the use of a syringe to control ballast.
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TL;DR Summary
Youtuber builds a cool radio controlled submarine
 
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He also has an associated blog describing the build in greater detail.

https://brickexperimentchannel.wordpress.com/rc-submarine-4-0-blog-post-series/

In particular, I was curious about the radio-controlled aspect as radio-control is pretty much impossible in water. He salvaged a toy radio controller with a low-frequency transmission of 27MHz citing that very issue ie GHz wouldn't work at all.

His build was able to control the submarine at a maximum of 3 to 4 meters. Playing with antenna placement and receiver placement didn't seem to improve it all that much.

Another part of his build was the python coding for a Raspberry-Pi and the use of a syringe to control ballast.
 
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1. How does a radio controlled Lego submarine work?

A radio controlled Lego submarine works by using a remote control to send signals to a receiver on the submarine. The receiver then translates these signals into movement for the submarine's motors, propellers, and other components.

2. What materials are needed to build a radio controlled Lego submarine?

To build a radio controlled Lego submarine, you will need Lego bricks, a motor, a propeller, a receiver, a remote control, and a power source such as batteries. You may also want to use waterproofing materials to protect the electronic components.

3. How deep can a radio controlled Lego submarine dive?

The depth that a radio controlled Lego submarine can dive depends on its design and the materials used. Some Lego submarines can dive up to 10 feet, while others can only go a few feet. It is important to test and adjust your submarine's buoyancy to ensure safe and successful dives.

4. Can a radio controlled Lego submarine be controlled underwater?

Yes, a radio controlled Lego submarine can be controlled underwater as long as the receiver and remote control have a strong enough signal to reach each other. However, the farther the submarine is from the surface, the weaker the signal may become.

5. Are there any safety precautions to consider when building and operating a radio controlled Lego submarine?

Yes, it is important to follow safety precautions when building and operating a radio controlled Lego submarine. This includes using waterproofing materials to protect the electronic components, testing the submarine in a controlled environment before taking it into open water, and always having adult supervision when operating the submarine. It is also important to follow all local laws and regulations regarding the use of radio controlled devices in public spaces.

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