Search found 52 matches

by MarcoMota
Jun 26th, 2020, 6:09 am
Forum: Control Systems and Tethers
Topic: FSK modulation to transmit further
Replies: 5
Views: 6719

FSK modulation to transmit further

Hi guys, I was wondering if it would be a good idea to transmit digital signal through the tether using FSK modulation . This would allow fewer distortions and reflections in the wire. And in consequence this should allow further distances There are some cool modules that can already make the modula...
by MarcoMota
Jun 25th, 2020, 10:31 am
Forum: Your ROV Projects
Topic: U-DRONE Amethyst AUV Platform
Replies: 42
Views: 50424

Re: U-DRONE Amethyst AUV Platform

here is the progress. So you all advise me to buy blue robotics 3'' series enclosure? I live in europe so the shipping will cost me... This is the kit I am thing to buy. Maybe the cylinder a bit shorter. https://bluerobotics.com/store/watertight-enclosures/3-series/wte3-asm-r1/ E1BC054D-BD31-490C-87...
by MarcoMota
Jun 23rd, 2020, 5:53 am
Forum: Control Systems and Tethers
Topic: Problems Arduino Nano V3 and MAX485 no clear connection
Replies: 18
Views: 16202

Re: Problems Arduino Nano V3 and MAX485 no clear connection

Why dont you use the UART serial comunication already implemented in arduino? You can use seial.write and serial.read comands to comunicate between two arduinos. Of course if you want a really fast and relliable transmission you will have to think in using syncronous comunication and not asyncronous...
by MarcoMota
Jun 22nd, 2020, 6:03 pm
Forum: Frames, Hulls, & Bouyancy
Topic: Pressurize acrylic cylinder dinamically
Replies: 2
Views: 3788

Pressurize acrylic cylinder dinamically

Hi, I just realized that the problem of objects imploding underwater is the difference in pressure . If I could measure water pressure outside the rov and air pressure inside the rov I could make a system that with a gas can it pressurizes the cylinder , then when going up I could put a valve or a p...
by MarcoMota
Jun 18th, 2020, 2:49 am
Forum: Your ROV Projects
Topic: U-DRONE Amethyst AUV Platform
Replies: 42
Views: 50424

Re: U-DRONE Amethyst AUV Platform

In the quick tests I did 3D printed caps (even printed at 100% infill) will not be waterproof at depth. I would go with a ready made enclosure like you linked especially if you have some money wrapped up in the electronics. -Steve :sting: Thankyou. Yes thats my same thought. Just to go cheap but ha...
by MarcoMota
Jun 17th, 2020, 5:06 pm
Forum: Your ROV Projects
Topic: U-DRONE Amethyst AUV Platform
Replies: 42
Views: 50424

U-DRONE Amethyst AUV Platform

Hi Guys, I am planning to make a Amethyst AUV Platform ( https://beobachtung3d.com/ ) this summer. This should be the final result: Schermata 2020-06-17 alle 23.05.08.png Here are the pieces I have printed so far... IMG_3227.JPG I already want to ask you something ... Do you think a plexiglass pipe ...
by MarcoMota
Jun 16th, 2020, 2:32 pm
Forum: Introductions
Topic: Introduction AUV project and already finished ROVs
Replies: 8
Views: 6943

Re: Introduction AUV project and already finished ROVs

Lucas wrote:Welcome aboard! Looking forward to seeing a build thread!
ThankYou! I will probably make one soon ;) <><
by MarcoMota
Jun 10th, 2020, 1:33 pm
Forum: Introductions
Topic: Introduction AUV project and already finished ROVs
Replies: 8
Views: 6943

Re: Introduction AUV project and already finished ROVs

Well, if you are using the Fathom X boards for comms, 26 gauge speaker wire wound into 3-strand yellow poly rope will work as a tether. Use a drill to twist the speaker wire first, as twisted wire rejects EMI. 3-D printing is a very useful technology, but don't get fixated on it. Why print a tube t...
by MarcoMota
Jun 10th, 2020, 12:16 pm
Forum: Introductions
Topic: Introduction AUV project and already finished ROVs
Replies: 8
Views: 6943

Re: Introduction AUV project and already finished ROVs

ThankYou both! As soon as the project will make some progress I will make an update. I will probably will need some help with the ballast(yes I want to make a balalst) and for the remote controlling part. The first tests will be made with a tether. Is a normal ethernet cable enough or is it better t...
by MarcoMota
Jun 10th, 2020, 7:13 am
Forum: Computer Aided Design
Topic: Thingiverse ROV collection
Replies: 0
Views: 27886

Thingiverse ROV collection

Hi there,

just wanted to give you a link to a collection I made of all the ROV CAD designs I found on thingiverse that I found interesting.

Link: https://www.thingiverse.com/MarcoMota01/collections/rov

Have a good day <><