Lego is a fun building block which huge numbers of the world’s kids play with every day. However, the mechanical Technic line of Lego building blocks has long used higher choices to the budding engineer. [Brick Experiment Channel] is one such soul, working difficult on their most current Lego submarine.

The sub is developed inside of a glass food container, selected for its removable plastic lid with a watertight seal. This keeps all the mechanics dry, in addition to the custom-made electronics developed to enable a 27MHz RC controller to send signals to the Lego electronics. This is crucial as higher frequency radios such as Bluetooth or WiFi can’t penetrate water almost as well.

A magnetic coupling fitted to a Lego motor is utilized to drive the propeller in the water without the leaks typical when trying to seal a turning shaft. A second coupling on a Lego servo together with a innovative steering plan enables the propeller to be counted on steer the craft.

The ballast system is simple. A balloon is filled by a Lego motor running an air pump, capable of 3.0 mL a second as well as capable of producing a maximum pressure of 2.0 bar. When the balloon is inflated, the buoyancy goes up as well as the sub rises. Run the motor the other method as well as the balloon is emptied by a creative hold as well as valve arrangement, minimizing buoyancy as well as triggering the sub to sink.

The sub isn’t perfect. preserving a set depth underwater can be tough with the rudimentary ballast system, maybe as the balloon modifications shape with diverse water pressure. Sometimes, Lego axles slip out of their gears, too, as well as the radio only works for a few meters under water.

However, just building a Lego sub of any type of kind is a exceptional feat. It’s fascinating to see the variations in the style compared to earlier jobs from [Brick Experiment Channel], too, as we’ve featured their earlier subs before. video after the break.