Hello Reader,

Welcome back to The Build Log! We are preparing our autonomous submarine for a very exciting mission in the Adriatic Sea, and in this e-mail we'll show you all of the upgrades we have made to the submarine to prepare it for the mission.

1_ Double thruster upgrade

As you might have read in one of our previous newsletters, we had some problems with the submarine turning to the side while flying at high speed. This happened because of a phenomenon called "torque roll". The one large thruster has caused the submarine to swim at its side, instead of level - it became even worse when the submarine was swimming on the surface, because the weight of the antenna. Here is the basic mechanism:

To fix that, we decided to integrate two smaller motros instead of one big one. They rotate in opposite directions, counteracting each other's torque roll.

2_ Lighting & cameras

We want the submarine to operate in deep ocean. And right now, we're aiming for the submarine to fly at the maximum depth of around 300 meters. At that depth, there is very little sunlight - and if you want to film anything there, you need good lighting. At the same time, you need to put your lights as far away from the cameras as possible. That's why, we decided to put the camera in the middle of the submarine, and strong lights on each end of it:

We'll show you the mission we're planning to do with this upgraded AUV next week, so stay tuned! If you want to build an underwater project, the easiest way to get involved is to build the entire CPS 3 drone with our DIY Kit -> now available!

You don't have to buy any components separately, because they're all in the one box delivered to you.

Cheers,

Piotrek, CPSdrone

PS: You can access all of the previous releases of the newsletter here.