Starry, starry night. ♪ ♫
Posted
#181610
(In Topic #10262)
Inactive Member
I thought a dark night sky with stars might be the go.
I wanted to see how I could use the reflected light from a few (eight), 5000 MCD high intensity LEDs.
So I made up a light box out of 3 mm MDF with a LED at the centre, looking through a 5/32" hole, and then made concentric holes around it; also using smaller sized drills.
The thing sat on a background of Alfoil, for extra reflection.
Here are a couple of photos of how the experiment came out.
Emboldened by the results, I created a template based on a single, bright star with smaller ones around it. The top of the lens of the LED, pointing along a row of smaller holes.
The multiplier effect of the obverse and the reverse sides, gave me many options as I rotated the template through 360º. I decided that I wanted areas of black sky between the star groups, so eight groups looked right.
I've started to paint the backboard. Brown at the bottom for the loom of the city lights behind, grey for the sky and black with over spray to represent rain in the distance.
First I had to prepare the platform which is the base for the scene, by wiring it to take the light boxes.
There is a sub-bus running along the bottom, which can be connected to the DCC system, or to the 12 Volt DC bus. Later I plan to have decoders in the buildings and for the star light boxes, but for now, I'm staying with the DC.
You can see the jacks for the warehouses and the one marked Back Board.
With the holes drilled, the LEDs were connected to their resistors and taped in place with masking tape. That is to hold them secure while the PVA saddles set up.
Test as you go. The power supply is my home made DC train controller. There is a multimeter in parallel to set the Voltage at 12. All good.
Next, the backs of the light boxes were covered with Alfoil to act as a reflector. Very fiddly business. ;-)
Then the protective 3 mm MDF backs were tacked on to the walls of the light boxes. I used short track pins which can easily be levered off for repairs.
Now, the moment of truth . . .
Not too bad.
Let's see how it looks on the layout.
That will do nicely. :thumbs
Max
Port Elderley
Port Elderley
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Banned
Cheers. Gary.
Posted
Guest user
Excellent result. Very tranquil looking, it could actually send you to sleep. Does any work actually get done by these workers of yours
Fantastic result.
Toto
Posted
Inactive Member
No daytime running, I'm afraid. Shifts start at midnight; shunting ready for the day shift.
All will be revealed . . .
Max
Port Elderley
Port Elderley
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Terry
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Max
Port Elderley
Port Elderley
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John
John
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Max
Port Elderley
Port Elderley
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:thumbs;-):cool:
my webcam link 6.19.184.67:8080
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Jeff Lynn,
Amateur layabout, Professional Lurker, Thread hijacker extraordinaire
Amateur layabout, Professional Lurker, Thread hijacker extraordinaire
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Max
Port Elderley
Port Elderley
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Site staff

Regards
Alan
Born beside the mighty GWR.
Alan
Born beside the mighty GWR.
Posted
Inactive Member
Considering that the layout is based somewhere fictitious in the US, I thought that it was a bit pointless .
When I finally get around to making the movie, it should suffice for effect.
Max
Port Elderley
Port Elderley
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reg
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Max
Port Elderley
Port Elderley
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