Hello, I have a project and its purpose is to show what is how many meters deep under the sea. For now, only 30 meters of depth will be enough for me. But I do not know exactly how to do this and I have been searching for a long time, but I have not reached a solution, generally there are devices that can measure a few cm, but they do not work for me. The modules I can find

Arduino uno
Servo motor
Sensör tutucu
Jumper kablo

Thermo Sensor Arduino

I am suggesting to the Moderator to move your Topic to Project Guidance.

Please note that your post is unreadable at the moment. Please repost it correctly after studying How to get the best out of the Forum