I have set up this thread to accommodate off topic posts on the Titanic thread and to stop DM feeling miserable.

Colin

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Colin

Thanks for info from the Times, aren't you posh reading the thunderer, the show on Sunday should be worth watching.

Thanks for the Mayhem link, I cant see what all the fuss is about as it has a straightforward mechanical solution although making the barrels rise and fall is a little more problematic.

Paul

Edited By Colin Bishop, Website Editor on 01/01/2017 14:07:03

Colin

It is simple solution that uses Victorian technology to move all turrets in the required directions, no servos and no clever electronics.

Think of worms

Paul

Edited By Colin Bishop, Website Editor on 01/01/2017 13:53:53

Colin,

Can you tell me, is this Arduino thing that has generated 160 or so posts in a week on Mayhem, the same thing that people on here said was a one trick pony of no use or interest to model boaters?

Gareth

Edited By Gareth Jones on 31/12/2016 19:29:53

Edited By Colin Bishop, Website Editor on 01/01/2017 13:55:25

Dave

Sorry about bringing this turret nonsense over but I find Mayhem very difficult to navigate and I was curious however my interest stops here.

Happy new year to you and all.

Gareth

This is just a simple mechanical problem and the Arduino connection is irrelevant, btw I am reminded of the challenge that you laid down at the Haydock show a couple of years ago in which you proposed to build a model with greater manoeuvrability and pulling power than my Mighty Thor. Is this still on?

Colin

The solution is a lay shaft with worm drives at intersecting points with the turrets, a small geared motor turning at 1 rev / second (approx) would be sufficient to drive the shaft whilst slew rings on the bottom of the turrets would connect to the worm drive and give a turret the rotational speed to turn 90deg in 15 seconds.

The accuracy of the system depends upon all of the slew rings being the same diameter and having the same number of gear teeth. note:the slew rings don't have to be the same diameter as the turrets.

If the model is in two parts then two identical systems would be required but with both connected to the same receiver channel.

Your chums on Mayhem shouldn't need a diagram and calcs for this but if they do then I am happy to oblige (mates rates of course)

Paul

Edited By Colin Bishop, Website Editor on 01/01/2017 13:52:47

Gareth

You might find it informative to go back and read what was actually said, as opposed to what you chose to remember. Here is the relevant thread, in which I can find no reference to Arduino technology being described by anyone as 'of no use or interest to model boaters'. **LINK**

If you read the full thread you'll see that you are on record as apologising to certain folk if you had offended them by calling them Luddites etc. After over a year since anything was added to that thread I wonder why you seem now to be having second thoughts and stirring up the whole thing again. It's not as if others have been clamouring to offer their contributions in the meantime, is it?

As regards Bob K and his model dreadnought, the 160+ posts on Mayhem have produced a lot of opinion but little in the way of a working solution – a bit like watching a bar-room full of football supporters argue about the team selection.

Dave M

Paul,

I did inform the world that I would not be taking up your challenge to battle Thor quite some time ago, the link is here. **LINK**

Dave,

Maybe nobody explicitly said model boaters have no use or interest in Arduino as a control system but it was clearly the impression given by some of the posters, although not necessarily you, I hasten to add.

Gareth

Paul,

Thanks very much and a very happy new year to you too.

Gareth

The problem that legs up the mechanical solution is that on the model in question, HMS Agincourt, the turrets are not conveniently all facing forward at the front and sternwards at the back. If it was a case of just wanting the turrets to have 3 basic positions, a simple mechanical system would be fine. But it isn't.

As we want more sophisticated effects, programmable devices will come to the fore. They need "only" the interface to be designed and the program code inserting. Could be quite a big "only", but the versatile nature of the beast means that they will find many uses, and will start to reach down from quite complex jobs like this one to much more mundane uses as knowledge about them increases and costs come down.

I well remember a well overpaid executive of my previous outfit (late '80's) asking "What use is a word presser?" (sic)

I imagine that within very few years a few subroutines in a PC were doing his job, along with the jobs of his typing pool.

Colin

If this is the correct version of HMS. Agincourt then I haven't made a mistake, the solution is simple and just as I explained yesterday.

The only thing preventing me from producing detailed drawing information is the position of the joint where the model is split for transport.

It might help your understanding to know that worm drives come with either left or right hand gearing.

But as you suggest it is probably best left to the grownups and expert engineers on Mayhem to solve the problem.

Hi all. The luddite here

I just caught the tail end of this and this and would be a fantastic arduino project, and dead simple. The interesting part would be to use stepper motors, or just have servos powering each turret. A knob on the transmitter could be turned say 30 degrees to starboard and each turret could turn.. and can I say that it could turn in a very, how can I say it, sexy manner, to the required spot. 30 at the bow, and 150 at the stern. What a terrific project. John