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Author Topic: T.A.R.G.E.T - Rotating Seven gun turrets?  (Read 31373 times)

Colin Bishop

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Re: T.A.R.G.E.T - Rotating Seven gun turrets?
« Reply #375 on: May 14, 2018, 11:24:44 PM »

There are contemporary references to '''ripple' firing from forward to aft. Presumably to reduce the shock effect on the hull.


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Brian60

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Re: T.A.R.G.E.T - Rotating Seven gun turrets?
« Reply #376 on: May 15, 2018, 12:05:59 PM »

I reckon I understand what you mean threepio.

Its the firing sequence, because its random you sometimes get 1,5,2,6,3,4. but then the next sequence as I observed was like 1,5,1,6,3,1,4, in other words it is sometimes firing one gun numerous times in the sequence, but it does look the bees knees.

Bob K

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Re: T.A.R.G.E.T - Rotating Seven gun turrets?
« Reply #377 on: May 15, 2018, 01:12:03 PM »

Looking spectacular C-3PO  :-))

The gunfire should be almost simultaneous. 

"When a full broadside was fired, the resulting sheet of flame was big enough to create the impression that a battle cruiser had blown up; it was awe inspiring".

Not quite as awe inspiring as T.A.R.G.E.T. though  O0
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C-3PO

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Re: T.A.R.G.E.T - Rotating Seven gun turrets?
« Reply #378 on: May 15, 2018, 01:33:35 PM »

The gunfire should be almost simultaneous. 

Hi Bob/Brian

Bob - Yes that was my goal - I am addressing the turrets individually @ 100khz but it's not fast enough!!! ( or my code is napping somewhere) -  You can change a flag in the i2c communication protcol ( Wire.setClock(clockFrequency) )to talk over the network at 400khz which I will try later. -

I already have a back up plan just thought I might get away with the current solution.

My intention is that you will just be able to notice that they did not all fire at exactly the same time which is really easy to do - however I have made it more difficult as I am wanting to synch this to audio which limits my options.

Brian you spotted one of the problems ( multiple firing from one gun)  - the other is there is just to much time gap in the sequence....

Watch this space....

C-3PO
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C-3PO

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Re: T.A.R.G.E.T - Rotating Seven gun turrets?
« Reply #379 on: May 16, 2018, 07:53:56 AM »

TARGET - Model Boat Mayhem @ Wicksteed Park T-10!

Having used the TARGET test bed system for a few days now part of me can't believe that it might just actually work - it's come a long way since Bob K's first post on  December 23, 2016  http://www.modelboatmayhem.co.uk/forum/index.php/topic,56800.0.html

We are using a "pot" control on the 2.4ghz RC TX to select the turret position - one thing that I have noticed is that the control is a little "coarse" in being able to put the turrets to a desired position accurately.

I might experiment using a multi position rotary switch to simulate an old fashioned "resistance ladder"  - this way you could very accuratley command the turrets to  predetermined positions.

C-3PO

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bfgstew

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Re: T.A.R.G.E.T - Rotating Seven gun turrets?
« Reply #380 on: May 16, 2018, 09:03:27 AM »

Just a thought C-3PO, how about a 10 turn pot with a graduated dial, like on a safe lock? Should give 10 times the accuracy. Map turret rotation position to number on dial for quick positioning.


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C-3PO

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Re: T.A.R.G.E.T - Rotating Seven gun turrets?
« Reply #381 on: May 16, 2018, 11:11:38 AM »

Hi Stewart,

That's an interesting suggestion...

C-3PO
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C-3PO

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Re: T.A.R.G.E.T - Rotating Seven gun turrets?
« Reply #382 on: May 17, 2018, 07:15:57 AM »

TARGET - Model Boat Mayhem @ Wicksteed Park T-9!

Turret training limts and Free to Fire zones all working for forward facing turrets - the aft facing turrets seem to be dancing to a tune all of their own - Maths was never my strong point.
Master and slave control boards still to be designed and made ( currently on stripboard) before this all gets fitted into Bob K's boat on Tuesday - pressure!!!

C-3PO
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C-3PO

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Re: T.A.R.G.E.T - Rotating Seven gun turrets?
« Reply #383 on: May 24, 2018, 08:55:17 AM »

TARGET - Model Boat Mayhem @ Wicksteed Park T-2

I think Bob and I maybe redefining "last minute" with this project - HMS Agincourt will only be fitted out with the TARGET system an hour or so before it hits the water @ Wicksteed Park
Frustration with defective stripboards - not one but two (tracks joined with rogue copper) led to lots of head scratching and significant lost time. You could only see the track joins under a powerful magnifying glass

Finally we have working Master and Slave control unit - however the rear facing turrets still have a mind of their own...

Here is the Master and Slave control units (Mcu & sMcu)

MCU



sMcu



Hopefully the next 48 hours will be constructive

C-3PO
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Bob K

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Re: T.A.R.G.E.T - Rotating Seven gun turrets?
« Reply #384 on: May 24, 2018, 10:01:28 AM »

Quote
I think Bob and I maybe redefining "last minute" with this project - HMS Agincourt will only be fitted out with the TARGET system an hour or so before it hits the water @ Wicksteed Park

You can say that again  %% 
Please everyone remember that ship and electronics have not yet been formally introduced to each other, and the hull only met "first water" here yesterday.

Bob K
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Re: T.A.R.G.E.T - Rotating Seven gun turrets?
« Reply #385 on: May 24, 2018, 10:03:28 AM »

You are a top chap C3PO. That has been a lot of challenging work, and I look forward to seeing it this weekend as much as I do the ship it is installed in  :-))
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bfgstew

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Re: T.A.R.G.E.T - Rotating Seven gun turrets?
« Reply #386 on: May 24, 2018, 10:14:28 AM »

Success or failure, this has been a monumental effort by you both.
Hope you get it working and get a video on line to see it in all its glory........👏👏👏👏
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Bob K

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Re: T.A.R.G.E.T - Rotating Seven gun turrets?
« Reply #387 on: May 24, 2018, 10:15:26 AM »

Totally agree   :-))

If we can get one turret turning, better still turning and FIRING, this three-way collaboration could be eligible for model boating's equivalent of Nobel Prizes
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tsenecal

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Re: T.A.R.G.E.T - Rotating Seven gun turrets?
« Reply #388 on: May 24, 2018, 04:03:26 PM »

Hopefully the next 48 hours will be constructive

C-3PO


why did i read that as "Hopefully the next 48 hours will be conductive" ?
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Colin Bishop

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Re: T.A.R.G.E.T - Rotating Seven gun turrets?
« Reply #389 on: May 24, 2018, 04:07:33 PM »

Conductive? Sounds electrifying..... ok2
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derekwarner_decoy

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Re: T.A.R.G.E.T - Rotating Seven gun turrets?
« Reply #390 on: May 25, 2018, 12:01:23 AM »

Electrifying.....Nobel Prize or Noble Prize?..............whatever it is, it certainly be most deserveded.... :kiss:...
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C-3PO

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Re: T.A.R.G.E.T - Rotating Seven gun turrets?
« Reply #391 on: May 25, 2018, 07:43:49 AM »

It really does seem that the universe does not want this project to be a success.

My mcu control unit stopped working last night - jurys out - I don't know why - having tinkered with it of an hour to see if I could breath life back into it I gave up.

Sporting a new "purple" 459 Mhz antenna a new Mcu was born this morning @02:30



C-3PO
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Bob K

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Re: T.A.R.G.E.T - Rotating Seven gun turrets?
« Reply #392 on: May 25, 2018, 08:23:18 AM »

Yippes  >>:-(
That is SO frustrating.  I feel really bad over how much effort you are putting into this. 
The least it could do is behave itself.  Would thrashing it with a dwarf tree help?  Probably not . . .
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