Radio Controlled Lego Submarine

[jedishrfu]

TL;DR

Youtuber builds a cool radio controlled submarine

 

[jedishrfu]

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.