First of all is very grateful to find this kind of forums where people can give ideas about the same projects, let me introduce my self before i jump into my design project. I am a 23 year old Mechatronics Engineer and have worked for 3 years offshore as ETO (Electro Technician Officer), and that is where my project begins.
One day around May 2013 I Joined a DSV (diving vessel) and for the first time I saw this ROV´s, for me it was amazing to meet this kind of deepsea operation.
Now I decided to build my own ROV and I know OPENROV is already a software developer and structure builder but please consider this is only a hobbie for me, is not going to be related to business.
I am starting from zero and I already programmed my own software using arduino UNO but I have some inquiries about ROV. first question, Why ROVs do not use Azimuth propellers? maybe some will say is not a need but somehow we can reduce te amount of Thrusters.
Well I am using a stepper motor for azimuth propultion using magnetic coupling, the command will be executed by a lever, depending of where you want to move it, my stepper motor will move 5 degrees for each step and will tell by a LCD how many degrees are the command given by the lever and how many degrees is the real possition of the stepper motor which i call feedback.
for propultion i am using DC motors with magneting coupling, I havent bought this ones but i will probably buy from some internet page i found called bluerobotics.com, I will use 3 Thrusters, ( 2 azimuth thrusters and 1 center tunnel thruster) all this propultion motors will be also controlled by levers which will give order for RPM controlled by PWM, I see some people talk about ESC, may somebody please tell me what is this?.
now i have some questions about my connections, how can i enclosure to watertight conections? we all know this is critical and i dont wnat any leakage of water going inside my ROV.
if i use 200 meters cable, will I lose data while sending from my microcontroller to the motors? pr there is no problem?
I only want this project to be a 100 meters ROV, so i am pretty sure i dont need to presurize anything with some oil or do i need?
many thanks to everybody who takes a second to read my post.