Search found 52 matches

by MarcoMota
Jul 29th, 2020, 7:23 am
Forum: Your ROV Projects
Topic: Suki ROV
Replies: 7
Views: 10041

Re: Suki ROV

Hey, yes! Look at RC car escs. I also was a lot into electric skateboards and they used VESCs with are really powerful and completely programmable. It seems weird you would brake your motor. Mostly probably you would brake the esc. You should create a protection circuit with diodes and capacitors. F...
by MarcoMota
Jul 29th, 2020, 5:43 am
Forum: Your ROV Projects
Topic: Suki ROV
Replies: 7
Views: 10041

Re: Suki ROV

Hi, great Project!! I don't think you can reverse polarity in all kinds of ESCs. If you want to use this ESCs, and be able to reverse them, I would suggest you tu plug a rele to two of the output cables on the esc so that when it is active it will switch both cables, this will make the motor go on t...
by MarcoMota
Jul 20th, 2020, 5:55 am
Forum: The Mission is Over
Topic: Used rov parts
Replies: 2
Views: 4764

Re: Used rov parts

hey, a way to pay less is also if you have a friend with has a 3D printer. There are some parts that you can 3D print and iterate that can save you some money. If you go to my amethyst AUV thread you will see I 3D printed almost everything. the 3D printed parts costed me around 40€. Also having some...
by MarcoMota
Jul 17th, 2020, 3:27 am
Forum: Your ROV Projects
Topic: U-DRONE Amethyst AUV Platform
Replies: 42
Views: 49444

Re: U-DRONE Amethyst AUV Platform

Here is a video where I explainn how I made the Electronics Tray + Battery Pack For the 3’’ BlueRov Watertight Enclosure...

Any suggestion to improve the video quality and entertainment value?

by MarcoMota
Jul 15th, 2020, 12:28 pm
Forum: Control Systems and Tethers
Topic: FSK modulation to transmit further
Replies: 5
Views: 6556

Re: FSK modulation to transmit further

Big plus for you is that in water sound travels further. Disadvantage of this system is that you only can do half duplex and think about both the land side and rov side sending information at the same time which generates more noise. It can also be Full duplex. I use one frequency for the controlle...
by MarcoMota
Jul 14th, 2020, 11:43 am
Forum: Your ROV Projects
Topic: U-DRONE Amethyst AUV Platform
Replies: 42
Views: 49444

Re: U-DRONE Amethyst AUV Platform

Here's a little study I made for the "wireless" control of the ROV.



Any cheap suggestions for a Hydrophone or a speaker that works also underwater?
by MarcoMota
Jul 14th, 2020, 9:20 am
Forum: Control Systems and Tethers
Topic: FSK modulation to transmit further
Replies: 5
Views: 6556

Re: FSK modulation to transmit further



Just made some first tests. It looks promising.
by MarcoMota
Jul 14th, 2020, 3:47 am
Forum: Your ROV Projects
Topic: U-DRONE Amethyst AUV Platform
Replies: 42
Views: 49444

Re: U-DRONE Amethyst AUV Platform

Just made the Dry compartment battery/attachment. Here is a picture of the battery wiring (3S 2p): IMG_7221.JPG And here are some pictures of the finished piece: 239EF52C-826C-4618-AEEB-0E2E486DDA1C.JPG 36324AA3-B87E-4724-99C1-6601DF5C8689.JPG 9E1C0B4A-DE2F-4392-A45E-9F1F67933BE1.JPG 5839E125-B73C-4...
by MarcoMota
Jul 12th, 2020, 6:27 am
Forum: Your ROV Projects
Topic: U-DRONE Amethyst AUV Platform
Replies: 42
Views: 49444

Re: U-DRONE Amethyst AUV Platform

Just made the dry compartment system. The plan is to have 6 18650 batteries and the rest of the tube can be used for electronics. DryCompartment_2020-Jul-12_09-15-55AM-000_CustomizedView17780834558.png DryCompartment_2020-Jul-12_09-16-55AM-000_CustomizedView7624698810.png DryCompartment_2020-Jul-12_...
by MarcoMota
Jul 11th, 2020, 5:09 pm
Forum: Your ROV Projects
Topic: My "MINIRAY" Rov.
Replies: 138
Views: 146891

Re: My "MINIRAY" Rov.

For a year i've been looking at the BlueRobotics FathomX boards, which send ethernet over 2-wire twisted pair, but they want $160. I just found a pair of units on Amazon that send ethernet over twisted pair or coax (100mbps over coax) for $49. I bought 2 pairs. Shipped was $106. https://www.amazon....