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Signals & Switches & L.C.C. Oh My !
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 Posted: Sat Oct 13th, 2018 04:26 am
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Steve P
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This winter I am going to design signals and controllable switches for my Gauge One RR.

I have two other threads for this RR:

The track design:
http://www.freerails.com/view_topic.php?id=8181&forum_id=52&page=1

The control and battery car designs:
http://www.freerails.com/view_topic.php?id=8145&forum_id=45&page=1

I expect to design the control around LCC: Layout Command & Control.  
Any opinions on this?  
Any suggested alternatives?

My first project will be prototype searchlight signals, using UP aspects of the 40's & 50's.
I have obtained 3 watt hi-power RGB LEDs and control ICs for the search lights.  
Expecting to use PWM from an Arduino board to light them up, change color, accept LCC commands, etc.

After this I expect to tackle LCC controllable switches.  
I am using LGB switches, but am not impressed with the motor units they sell.  
Will experiment with servos and feedback micro-switches, again LCC connected.  
Any ideas/experiences in this area would be appreciated.

Steven P



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 Posted: Sat Oct 13th, 2018 04:47 am
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Kitbash0n30
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I'm such a non-techie I had to Google what LCC: Layout Command & Control is.

Found this from the NMRA:

https://www.nmra.org/sites/default/files/standards/lcc_faq_handout.pdf




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Screw the rivets, I'm building for atmosphere
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 Posted: Sat Oct 13th, 2018 04:57 am
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Steve P
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Hi,

My biggest concern is that it seems to have been around for a few years yet I see very few manufactures building anything yet.  
The only full product line I've found is:

http://www.rr-cirkits.com/description/index.html

But I don't want to write code that follows no standard, and I don't think DCC is appropriate.

I have a LOT to learn about CAN bus to proceed.  
There are several inexpensive sources for Arduino based CAN controllers, so thats encouraging.

Steven P



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 Posted: Wed Oct 17th, 2018 08:46 pm
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Steve P
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I've finished a prototype of a searchlight using a 3 watt high power RGB LED.  

This is the light only, no proper tower yet.

   


The above are red, yellow and green.  

The colors look much better to the naked eye, something about photographing them shifts the color spectrum.  
I can clearly differentiate the 3 from 200', so it does what I need.  

And I think they will be much brighter when refined, I didn't have the proper current limiting resistor on hand.  
This is using about 120mA of forward current, the final version will be more like 350mA.


Steve P


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 Posted: Thu Oct 25th, 2018 02:48 am
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Steve P
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Hi,

The prototype is almost finished.  

I will be putting a video online of it going thru the 1972 UP aspect rules.





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 Posted: Thu Oct 25th, 2018 03:10 am
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Steve P
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Hi, 

Here's a video of it displaying the Union Pacific aspect rules of 1972: UP rules

Again, I apologize for the quality of the LED colors.  

The yellow looks white, but to the naked eye it is quite yellow.  
I did a little research, and it appears to be a big effort to photograph RGB LEDs as their color spectrum confuses modern CCD technology  :f:

Steve P



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 Posted: Thu Oct 25th, 2018 03:25 am
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Steve P
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Here's some perspective against my 1:32 scale Big boy:

The black disk is out of scale, at 48" prototype size, but necessary to hide the box required by the size of the LED/heatsink.  

The 1/4" hole does approximate the 8" lens of the real deal.






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 Posted: Thu Oct 25th, 2018 03:40 am
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Steve P
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Here's the innard's:





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 Posted: Thu Oct 25th, 2018 03:50 am
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Kitbash0n30
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That is pretty cool.







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See y'all later, Forrest.
Screw the rivets, I'm building for atmosphere
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 Posted: Mon Oct 29th, 2018 07:13 pm
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Si.
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Hi Steve  :wave:



Lookin' AWESOME !  :!: :!: :!: :!: :!:



I recently put a couple of 4-Watt L.E.D. bulbs on my stairs.  :P

Swapped 'em out for a couple of lower 2-Watters in the end.

Boy they were BRIGHT !  :cool:

We are taking about 'ambient' night-lighting though.  L:


Great work on the signals.  :brill:



:)




Si.




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