Search found 56 matches

by MarcoMota
Jul 20th, 2025, 5:12 am
Forum: Your ROV Projects
Topic: U-DRONE Amethyst AUV Platform
Replies: 43
Views: 140100

Re: U-DRONE Amethyst AUV Platform

Update! Idea on how to transmit video with easy and cheap plug-and-play solutions... From AliExpress I found Car parking camera, wireless car parking camera transmitter and AV to USB C converter. This can be used in unison with a long AV cable and a Floater to transit video to the controller via wir...
by MarcoMota
Jan 17th, 2025, 7:05 am
Forum: Thrusters
Topic: Using High Frequency injection for Better Control of Underwater Propellers at Low Speed and StartUp
Replies: 0
Views: 18421

Using High Frequency injection for Better Control of Underwater Propellers at Low Speed and StartUp

Hi everyone, I was wondering if anyone has ever done tests with high-frequency injection techniques to underwater motors to improve a motor’s current and speed behaviour at low speeds. I am under the impression that High-Frequency Injection (HFI) with PMSM or Brushless motors can drastically improve...
by MarcoMota
Aug 12th, 2024, 1:33 pm
Forum: Your ROV Projects
Topic: Final ROV developement support on request
Replies: 3
Views: 23177

Re: Final ROV developement support on request

Hi guys,

I am based in Lombardy too.

If you want I would love to connect and bring the project forward!
by MarcoMota
Aug 12th, 2024, 1:30 pm
Forum: Control Systems and Tethers
Topic: HFi (High Frequency Injection) for better control at low speeds
Replies: 0
Views: 14239

HFi (High Frequency Injection) for better control at low speeds

Hi guys! <>< I recently learned about HFI (High Frequency Injection), which is used in V-ESCs to start controlling the motor in Closed Loop from a standstill, allowing for maximum torque. The interesting thing is that all this doesn't require additional hardware on the motor side! I think this could...
by MarcoMota
Mar 16th, 2022, 1:08 pm
Forum: Your ROV Projects
Topic: My first ROV: ROVTNIK V1
Replies: 2
Views: 24803

Re: My first ROV: ROVTNIK V1

managed to get another picture of the ROV while cleaning.
managed to get another picture of the ROV while cleaning.
Schermata 2022-03-16 alle 18.02.35.png (701.29 KiB) Viewed 19305 times
by MarcoMota
Jan 26th, 2022, 4:12 am
Forum: Your ROV Projects
Topic: ROV Project "Bumblebee"
Replies: 2
Views: 19066

Re: ROV Project "Bumblebee"

Neat design! How are you planning to water proof the servos?

I tried to make a servo solution, but it's really difficult to waterproof the servos and guarantee it will keep waterproof for a long time.


<><
by MarcoMota
Mar 13th, 2021, 9:19 am
Forum: Your ROV Projects
Topic: UUV
Replies: 15
Views: 46728

Re: UUV

This is Amazing!!! The caps for the dry hull are resin 3D printed? Di you already test the waterproofness of the caps? Whats the max depth that you are planning this UUV to go? Why did you choose to use two arduino nanos? You have quite a lot of space in there. You could have used a better microcont...
by MarcoMota
Mar 13th, 2021, 4:04 am
Forum: Your ROV Projects
Topic: U-DRONE Amethyst AUV Platform
Replies: 43
Views: 140100

Re: U-DRONE Amethyst AUV Platform

Would be nice if you add it, for future reference by other people. OK... So... The Tenda P200 module is a powerline adapter for transmitting ethernet signal through the home electrical grid. By opening this module you will be able to separate the AC side from the modulator module by just separating...
by MarcoMota
Mar 11th, 2021, 12:00 pm
Forum: Your ROV Projects
Topic: U-DRONE Amethyst AUV Platform
Replies: 43
Views: 140100

Re: U-DRONE Amethyst AUV Platform

fryslan76 wrote:
The tenda I used is this one Tenda CPL P200 kit.

I can post the wiring if you need it.
by MarcoMota
Mar 10th, 2021, 10:30 am
Forum: Your ROV Projects
Topic: U-DRONE Amethyst AUV Platform
Replies: 43
Views: 140100

Re: U-DRONE Amethyst AUV Platform

Good to see your update Marco. Interesting use of vertical thrusters so you will be able to hover. I'll be interested to see how it performs in the water. as long as you keep the centre of gravity low in the hull (keel weights?) it should stay upright and not roll. For now is bottom heavy and it do...