About

Gender

Male


Location

Primorsko goranska županija


Please tell us a bit about your UAV interest

Planning to build ROV.


Hometown:

Kraljevica


Activity Feed

Vedran Devcic replied to Vedran Devcic's discussion Powering ROV from topside in ArduBoat User Group
"I have thinked about it. 
We plan to make our WTC out of Aluminium tube so i was thinking about mounting a buck heatsink to the WTC, that way i would have large area to disipate produced heat, but i havent gone in details about it jet. What do u…"
Jan 15, 2016
Vedran Devcic replied to Vedran Devcic's discussion Powering ROV from topside in ArduBoat User Group
"Im aware 11amps isnt enough but im still thinkig to go bigger or to limit them a little bit by software.

Once more thank you very much for your input (time) its much appriciated."
Jan 15, 2016
Vedran Devcic replied to Vedran Devcic's discussion Powering ROV from topside in ArduBoat User Group
"Regarding cable.

I found cable that is rated for 450v dc and is designed to be permanently submerged to 100m. And price is 1.32 eur for meter. (+ tax 20%) that seems pretty fair to me.…"
Jan 15, 2016
Vedran Devcic replied to Vedran Devcic's discussion Powering ROV from topside in ArduBoat User Group
"Biggest problem as i see it is that t200 thrusters use really allot of current.

Theirs max rated consumption is 25amps but ESCs burst or max consumption is 35amps in water as per documentation.

In scenario when you are trying to lift something…"
Jan 15, 2016
Vedran Devcic replied to Vedran Devcic's discussion Powering ROV from topside in ArduBoat User Group
"Yes that is the idea. Power generator 220v ac -> Ps 220ac to 300v Dc@11amps -> rov onboard 300v dc to 16v dc

Thats almost the same as some of commercial opsevational class ROVs.

We know that is allot of hardware but we are aiming for 5+ hours of…"
Jan 15, 2016
Vedran Devcic replied to Vedran Devcic's discussion Powering ROV from topside in ArduBoat User Group
"Hi Tom!

Once again thank for fast and detailed reply!
I already saw this solution on your post, but this just adds complicity to already complicated subject, we would rather go with off the shell power supply and be done with it...

Can you maybe…"
Jan 15, 2016
Vedran Devcic posted a discussion in ArduBoat User Group
Hi everyone.Whats yout thoughts on most efficent way to power ROV from topside.Max Demands are pretty high current wise, 6x25amps@16v for thrusters only+lights+camera+control+some spare for toolings.We are thinking about 300 V dc@15amps that we…
Jan 14, 2016
Vedran Devcic replied to Vedran Devcic's discussion Controling 4 ROV thrusters (vectored configuration) with arduino and joystick in ArduBoat User Group
"Hi Martin!

Of course, that would be much appreciated!"
Jan 13, 2016
Vedran Devcic replied to Vedran Devcic's discussion Controling 4 ROV thrusters (vectored configuration) with arduino and joystick in ArduBoat User Group
"Can you please give a list of your EU distributors, it would probably be easier to order from one of them nevertheless, because of import taxes and customs..."
Jan 10, 2016
Vedran Devcic replied to Vedran Devcic's discussion Controling 4 ROV thrusters (vectored configuration) with arduino and joystick in ArduBoat User Group
"Once again thanks! I understand large part of it better now.

I understand why would they be saturated if i have large input on two axes, but i don't have large input on two axes, only y-axe for forward and outputs are still saturated, or better…"
Jan 10, 2016
Vedran Devcic replied to Vedran Devcic's discussion Controling 4 ROV thrusters (vectored configuration) with arduino and joystick in ArduBoat User Group
"Thats what I though, but values that i get are already pretty close to PWM range of BLUE ESC so im not sure if formula concept is already done around that values or they have to be remapped again.

Will have to wait for Rusty ;)"
Jan 10, 2016
Vedran Devcic replied to Vedran Devcic's discussion Controling 4 ROV thrusters (vectored configuration) with arduino and joystick in ArduBoat User Group
"Thanks for fast answer Thom!
Im a bi lost now because Rusty said that a i have to map my joistick values (ranging from 0 to 1023) to -400 to 400 range, if im understanding it right i should map them to 1100 - 1900  range? Wouldn't that ruin the…"
Jan 10, 2016
Vedran Devcic replied to Vedran Devcic's discussion Controling 4 ROV thrusters (vectored configuration) with arduino and joystick in ArduBoat User Group
"If im gona be using your ESC with:
Max forward being 1900 microsecondsMax reverse being 1100 microsecond
How do i remap Thruster values to constrain them to those, what are MAX and MIN for those if using -400 to 400 scale..
In neutral joystick…"
Jan 10, 2016
Vedran Devcic replied to Vedran Devcic's discussion Controling 4 ROV thrusters (vectored configuration) with arduino and joystick in ArduBoat User Group
"@Rusty
I don't know how to thank you enough so ill just say THANKS ALLOT!

What do you think will be waiting time for 6xT200 with Blue ESC thrusters for Europe? Do you maybe have any dealership in EU who can have them on stock?

@Thomas
I presume…"
Jan 10, 2016
Vedran Devcic replied to Vedran Devcic's discussion Controling 4 ROV thrusters (vectored configuration) with arduino and joystick in ArduBoat User Group
"@Thomas

Thanks!

What is your plan for controling your ROV?"
Jan 9, 2016
Vedran Devcic posted a discussion in ArduBoat User Group
Hi everybody! My first post here, i hope it will yield some good results :)Im planning to begin work on my DIY ROV, something pretty similar to work mr. Thomas J Coyle II is doing over hereI havent started any "actual work" except "designing" my…
Jan 9, 2016
More…