Model Boat Mayhem

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 61 
 on: September 18, 2025, 04:47:09 pm 
Started by Trucker - Last Post by Trucker
Hello to every one
Ive finished the scratch built railings , they have been dry fitted so i can take a picture and give my self a pat on the back  ok2 , heres a couple of pictures, oh and meet the new crew member i had made.


Trucker

 62 
 on: September 18, 2025, 04:23:47 pm 
Started by Mark T - Last Post by Mark T
Another update from me - you can tell I'm off work sick with all of these updates  {-)


So I've been planking between the stern mouldings and then getting on with the nailing








And now at last we have a stern that looks solid  :-))














Finally I made and fitted the decorative moulding that covers the 1st beam on the quarter deck





My next job is to make the gratings - I'm just waiting on the guy who made the drawings I'm working from to confirm that I have read them correctly.


Cheers all - Mark  :-))

 63 
 on: September 18, 2025, 04:00:15 pm 
Started by SimonCornes - Last Post by Colin Bishop
Is this what you meant Simon?

https://www.railwayscenics.com/diffused-blue-flashing-with-integrated-chip-p-3900.html#description

Colin

 64 
 on: September 18, 2025, 01:52:55 pm 
Started by SimonCornes - Last Post by Stavros!
https://www.componentshop.co.uk/voltage-reducer.html


Well if i can use one anyone can solves all the problems.....I use then on my model railway and power up 40 odd leds inc 4x blue flashing leds and they will run all day at a railway show

Stav

 65 
 on: September 18, 2025, 01:35:10 pm 
Started by SimonCornes - Last Post by SimonCornes
One of the ebay links shows a circuit diagram which looks a bit odd. The 4017 chip is used in a very strange way, it's flashing one bank of LED's on and off 3 times then the other bank 3 times. This may be because it's overdriving them at 12v and giving a cooldown period.
Around 40-50 years ago I built a circuit with these 2 chips and LED's as a darkroom timer - the 555 pulsed the 4017 once a second which lit 10 red LED's in sequence then repeated.



At 6v you may find the flash speed is different from the 9-12v rate.


As for LED /resistor values - at 6v you'll lose 0.7v through the transistor leaving 5.3v, so if your LED has a forward voltage of 3v, you'll need a resistor of 110 or 120 ohms for 1 led. If you just use the 555 chip to drive 1 led, the 4017 and transistors are not needed.


I'm not sure this device is ideal for you but if you let us know exactly what you are trying to achieve (flash rate, on/off times, number of led's), we might be able to give better advice between us.


One LED, flash rate about once a second. Well more like one second 'on' and one second 'off', maybe a bit less but pretty much to match a standard blue light. It seems very simple to me but if its electronics then I expect it isn't, thats why I wondered if I could by a module off the shelf with a light on one end and a power lead on the other!

 66 
 on: September 18, 2025, 01:30:45 pm 
Started by SimonCornes - Last Post by SimonCornes
I added a link to a simple astable circuit as you were typing.
The kit has all the components to drive a blue led apart from ~33 ohm that fixes a constant current of (0.6/33) or ~ 20mA.


Unfortunately I'm not an electronics expert like you! I can quite happily build Maplins and Action electronic kits but after that it all goes over my head !
Hopefully the kit as provided will do what I want? My intention is to not fit any LED's apart from a flylead from one of the blue LED positions which can then go to the single light I need for the boat. Goodness knows where the power supply for this board attaches but I have a PP3 connector on a lead I can use so that shouldn't be a problem

 67 
 on: September 18, 2025, 12:17:56 pm 
Started by T888 - Last Post by Detomo
 :-)) Cheers , shall be looking froward to more pic's  :police: 

 68 
 on: September 18, 2025, 08:26:59 am 
Started by SimonCornes - Last Post by HMS Invisible
I added a link to a simple astable circuit as you were typing.
The kit has all the components to drive a blue led apart from ~33 ohm that fixes a constant current of (0.6/33) or ~ 20mA.


 69 
 on: September 18, 2025, 08:01:51 am 
Started by SimonCornes - Last Post by SimonCornes
Well I ordered one last night anyway. That’s because I realised that a PP3 is 9v so I’ve got around that problem. I only want one LED of course so I’ll just solder a fly lead to one of the blue LED positions on the circuit board and then see what happens. I’m hoping that it will just work and then i can play with the flash rate using the pot. Or is it not as simple as that? I like ‘simple’ !

 70 
 on: September 18, 2025, 04:32:33 am 
Started by Backerther - Last Post by Backerther
In order to get the hull looked more shapely, I just cut out the wave-shield like frame partially of the portside foredeck as seen in the pics below. I personally think it better by the elimination of the part since the foredeck turns out to be sharp and shapely than starboard still left unchanged. :-)) :-)) :-)) :D :D O0 O0
Another significance to eliminate the part is intended to give a scheduled dual-purpose gun a required firing angle against the air and the surface targets. O0

Well then, let's go to the starboard as well.!!!! :D :embarrassed:

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