Topic: T.A.R.G.E.T - Rotating Seven gun turrets? (Read 138554 times)

Colin Bishop · « **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.

Colin

Brian60 · « **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 · « **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

C-3PO · « **Reply #378 on:** May 15, 2018, 01:33:35 pm »

Quote from: Bob K on May 15, 2018, 01:12:03 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

C-3PO · « **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

bfgstew · « **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.

Stewart

C-3PO · « **Reply #381 on:** May 16, 2018, 11:11:38 am »

Hi Stewart,

That's an interesting suggestion...

C-3PO

C-3PO · « **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

C-3PO · « **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

Bob K · « **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

ballastanksian · « **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

bfgstew · « **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........👏👏👏👏

Bob K · « **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

tsenecal · « **Reply #388 on:** May 24, 2018, 04:03:26 pm »

Quote from: C-3PO on May 24, 2018, 08:55:17 am

Hopefully the next 48 hours will be constructive

C-3PO

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

Colin Bishop · « **Reply #389 on:** May 24, 2018, 04:07:33 pm »

Conductive? Sounds electrifying.....

derekwarner · « **Reply #390 on:** May 25, 2018, 12:01:23 am »

Electrifying.....Nobel Prize or Noble Prize?..............whatever it is, it certainly be most deserveded....

...

C-3PO · « **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

Bob K · « **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 . . .

C-3PO · « **Reply #393 on:** June 06, 2018, 09:38:45 am »

TARGET - Post Wicksteed Park update

Events that led up to the Wicksteed Park weekend with some "unfair" hardware challenges impacted on the implementation of TARGET in Bob's HMS Agincourt.

Basically we ran out of time on what was quite an ambitious objective.

However we did get the master and slave controller installed along with 3 turret controllers all plugged into Bob's 2.4 ghz radio - all working as expected apart from possibly one significant thing! - it was possible that the software would drive the smoke fluid pump either in the wrong direction or past a physical limit. This was an oversight and something that I had not anticipated in the build up to Mayhem - easily sorted but not on the day.

By now it was late in the afternoon and Bob needed to get to Mayhem @ Wicksteed Park

So the latest with TARGET is that Bob and I are working to get his HMS Agincourt boat fully equipped with the TARGET system but at a slower more relaxed pace

Other issues I had with rear facing turrets dancing to their own tune, training limits and free to fire zones are all coded and working well.

C-3PO

Bob K · « **Reply #394 on:** June 06, 2018, 11:12:22 am »

Frankly, it was a very long shot to get all this installed and tested on the day Wicksteed started.
However, I appreciate how much was achieved in so short a space of time.

It took quite a bit of time to re-map my Planet T7 receiver. C-3PO had used a Spectrum for his set up.

The mechanical issues were largely my failure to appreciate the inter-box wiring requirements. I am now working to greatly improve this situation using brass rod "Busbars" embedded under the deck panels, for DC power distribution and the 3 wire networking bus. I am learning!

Also, although DC wiring was there for the thermistor batteries, I now know only the +ve is switched on the boards. I will also be providing DC connectors to made deck removal easier.

Thankfully there is now no time pressure. Many thanks C-3PO

C-3PO · « **Reply #395 on:** June 14, 2018, 02:55:30 pm »

Next candidate for the TARGET system - only 1 hull and 3 turrets

Original ROYAL NAVY CAP TALLY?

C-3PO

Bob K · « **Reply #396 on:** June 14, 2018, 03:14:14 pm »

Not built already

Must be an 'as completed' picture?

Excellent choice. Beautiful battleship.
I estimate only 6 Arduino boxes: MCU, 3 x turret controllers, compass and audio?

I will watch this build with avid interest

Geoff · « **Reply #397 on:** June 14, 2018, 03:15:35 pm »

Just as a thought maybe you could get the secondary armament to track as well?

Cheers

Geoff

Netleyned · « **Reply #398 on:** June 14, 2018, 03:18:17 pm »

Could be an original cap tally,
They were not so shiny then.
But I suppose someone is doing
replicas.
Cap Tallies R Us comes to mind

Ned
Never had Cap Tallies.
First Ship Fisgard.
Motto
If it don't work, hit it with a
Hammer.

C-3PO · « **Reply #399 on:** June 14, 2018, 03:29:25 pm »

Bob - yes ARTR - just add water...

Geoff - Snap - see below pic for the new baby stepper motor I am playing with - to the left is the ones in Bob's HMS Agincourt

Neyleyned - could be a fake who knows - if you see it in the flesh it does look like it's old, the embroidery thread seems metallic'ish

C-3PO

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