Switch advice

 
  Harley Junior Train Controller

Location: Clergate, NSW
Hello,

I am hoping someone with electronics knowledge can offer me some assistance.

I am building some carriages for a customer that will feature interior lighting. The plan is to use the ANE Models lighting units, and Hollywood Foundry bogie pick ups.

http://www.anemodel.com/products_content.aspx?id=20

My customers layout is operated via a NCE Radio DCC system, so I would like to include a switch to turn the lights on and off, as they would otherwise be on permanently.

Unfortunately my electronics skills are non existent, and I am struggling to work out exactly what I need through research.

II would like to use a reed switch as they are inconspicuous, and they avoid the need to lift the carriages from the tracks to operate a manual switch mounted underneath.

I was originally inspired by the reed switches used in the Trainorama 49 class to control the marker lights at each end of the locomotive.

http://www.nmra.org.au/Hints/49_Class/Decoder.html

However in my research I have discovered that reed switches are classed as momentary as opposed to maintained, so that would mean the magnetic source would have to stay close to the switch in order to keep the lights off. Is there in fact two types of reed switches?

Hopefully someone can point me in the direction of a suitable product, as looking through RS is a little bit daunting and confusing! I have no issue with soldering the components, just selecting them!

Regards,

Harley

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  dthead Site Admin

Location: Melbourne, Australia
A function only DCC decoder is one solution, butcosts.  One can then turn on/off the lights at will. Downside is also it upside, DCC only control wise.....

Regards,
David Head
  Harley Junior Train Controller

Location: Clergate, NSW
A function only DCC decoder is one solution, butcosts.  One can then turn on/off the lights at will. Downside is also it upside, DCC only control wise.....

Regards,
David Head
dthead
That certainly is an option, however I will be fitting lighting to almost 50 carriages, so a few switches and a couple of magnets will certainly be less expensive!

Cheers,

Harley
  apw5910 Chief Commissioner

Location: Location: Location.
Electronics Australia, "Lighting for Model Trains," Oct, Nov, Dec 1967 used reed switches to turn lights off and on, and even used rechargeable batteries and  magnets in the track to do it...
  Harley Junior Train Controller

Location: Clergate, NSW
Electronics Australia, "Lighting for Model Trains," Oct, Nov, Dec 1967 used reed switches to turn lights off and on, and even used rechargeable batteries and  magnets in the track to do it...
apw5910
Thanks for the tip, do you have a copy of this that you could scan?
  apw5910 Chief Commissioner

Location: Location: Location.
Electronics Australia, "Lighting for Model Trains," Oct, Nov, Dec 1967 used reed switches to turn lights off and on, and even used rechargeable batteries and  magnets in the track to do it...
Thanks for the tip, do you have a copy of this that you could scan?
Harley
No, sorry, not any more. My collection of EA's was lost in some house move ages ago. Try your local library, or you can get the scan from Silicon Chip magazine for a price.
  Aaron The Ghost of George Stephenson

Location: University of Adelaide SA
What do you mean by 'lighting'? LEDs or globes and how many?
  Harley Junior Train Controller

Location: Clergate, NSW
This is the product I will be using.

http://www.anemodel.com/products_content.aspx?id=20

http://www.anemodel.com/Upload/Download/201511250142052814.pdf

https://www.facebook.com/media/set/?set=a.10152691065112316.1073741835.366820522315&type=3

The length of the carriage will dictate how many of the modular LED boards I add, but it looks like 6-8 LED's per carriage at the most.

Regards,

Harley
  linton78 Train Controller

Location: South Coast NSW
Hi Harley,


Here is a link to a reed switch manufacturer




https://standexelectronics.com/products/reed-switches/



Have a look at the Latching/Bistable tab. Part No. KSK-1E66 may be suitable.


I have had a quick look through RS Electronics and Element 14, however can not find the stocked part. Perhaps send Standex Meder an information request to find a stockist.



May not help, but the device is out there.

Linton
  Harley Junior Train Controller

Location: Clergate, NSW
Linton,

Thanks for the suggestion. I have delved further into the subject, and the part you recommended does look to be appropriate for what I need. I'll keep this thread updated with the outcome.

Cheers,

Harley
  Kevin Martin Chief Train Controller

Location: Melbourne
A function only DCC decoder is one solution, butcosts.  One can then turn on/off the lights at will. Downside is also it upside, DCC only control wise.....

Regards,
David Head
That certainly is an option, however I will be fitting lighting to almost 50 carriages, so a few switches and a couple of magnets will certainly be less expensive!

Cheers,

Harley
Harley
Sorry, but have I missed an important question here? You're building these for a customer with a DCC layout, right? If it were me, I'd be asking the layout owner what method he wants to control the lighting, perhaps he'd prefer to have the lights controlled from his DCC controller. If so add on the DCC components price to the order.
No point supplying an older method of light control, if DCC is wanted. Not everyone considers price a problem! I wish I were one!
  dthead Site Admin

Location: Melbourne, Australia
A function only DCC decoder is one solution, butcosts.  One can then turn on/off the lights at will. Downside is also it upside, DCC only control wise.....

Regards,
David Head
That certainly is an option, however I will be fitting lighting to almost 50 carriages, so a few switches and a couple of magnets will certainly be less expensive!

Cheers,

Harley
Sorry, but have I missed an important question here? You're building these for a customer with a DCC layout, right? If it were me, I'd be asking the layout owner what method he wants to control the lighting, perhaps he'd prefer to have the lights controlled from his DCC controller. If so add on the DCC components price to the order.
No point supplying an older method of light control, if DCC is wanted. Not everyone considers price a problem! I wish I were one!
Kevin Martin



Kevin,


A function only DCC decoder is one solution, butcosts.  One can then turn on/off the lights at will. Downside is also it upside, DCC only control wise.....

Regards,
David Headdthead
That certainly is an option, however I will be fitting lighting to almost 50 carriages, so a few switches and a couple of magnets will certainly be less expensive!


With fifty carriages, decoders may be a big problem. one could use plugs between carriages, but without knowing what carriages go with what, what shunting happens etc, a decoder in each wagon could cost a lot of money.  

Regards,
David Head
  Kevin Martin Chief Train Controller

Location: Melbourne
A function only DCC decoder is one solution, butcosts.  One can then turn on/off the lights at will. Downside is also it upside, DCC only control wise.....

Regards,
David Head
That certainly is an option, however I will be fitting lighting to almost 50 carriages, so a few switches and a couple of magnets will certainly be less expensive!

Cheers,

Harley
Sorry, but have I missed an important question here? You're building these for a customer with a DCC layout, right? If it were me, I'd be asking the layout owner what method he wants to control the lighting, perhaps he'd prefer to have the lights controlled from his DCC controller. If so add on the DCC components price to the order.
No point supplying an older method of light control, if DCC is wanted. Not everyone considers price a problem! I wish I were one!



Kevin,


A function only DCC decoder is one solution, butcosts.  One can then turn on/off the lights at will. Downside is also it upside, DCC only control wise.....

Regards,
David Headdthead
That certainly is an option, however I will be fitting lighting to almost 50 carriages, so a few switches and a couple of magnets will certainly be less expensive!

With fifty carriages, decoders may be a big problem. one could use plugs between carriages, but without knowing what carriages go with what, what shunting happens etc, a decoder in each wagon could cost a lot of money.  

Regards,
David Head
dthead
Agreed, but surely the customer of the OP ought to be making that call?
  dthead Site Admin

Location: Melbourne, Australia
Agreed, but surely the customer of the OP ought to be making that call?
Kevin Martin
As you said it is up to the Original Poster and his customer. We do not know what was agreed etc.  As we are not dealing with the customer, we offer what we can to this original poster as to what can be done.  

David
  Harley Junior Train Controller

Location: Clergate, NSW
Kevin,

I agree that an accessory decoder in each carriage would be ideal, but my customer indicated that it would be far too expensive, and thus was the one who made the call to fit a switch. It is perhaps a little bit naive to assume that I would make important decisions without consulting the owner, as he has been involved on every decision on specifications for the build. David gets it.

For the purpose of this thread, a DCC decoder has never been on the table. My intent was to uncover suitable options for the switches. The suggestion made by Linton appears to be very appropriate, and has allowed me to pursue similar products from other manufacturers, now that I know the correct terminology.

The bi-stable reed switches allow the lights to be switched on or off without the need to lift the carriage off the layout. The switches are very inconspicuous and will not require me to modify the floor to fit a slide switch.

Regards,

Harley
  Kevin Martin Chief Train Controller

Location: Melbourne
Kevin,

I agree that an accessory decoder in each carriage would be ideal, but my customer indicated that it would be far too expensive, and thus was the one who made the call to fit a switch. It is perhaps a little bit naive to assume that I would make important decisions without consulting the owner, as he has been involved on every decision on specifications for the build. David gets it.

For the purpose of this thread, a DCC decoder has never been on the table. My intent was to uncover suitable options for the switches. The suggestion made by Linton appears to be very appropriate, and has allowed me to pursue similar products from other manufacturers, now that I know the correct terminology.

The bi-stable reed switches allow the lights to be switched on or off without the need to lift the carriage off the layout. The switches are very inconspicuous and will not require me to modify the floor to fit a slide switch.

Regards,

Harley
Harley
Harley wrote

It is perhaps a little bit naive to assume
etc.


Harley, I didn't assume anything at all. Perhaps if you'd mentioned the fact, that this potential solution had already been discussed in the opening post and ruled out, I wouldn't have bothered with my contribution, since its got me in trouble.

Now I know what you want to do, I'll offer you, Good Luck.

Edit typo's
  dthead Site Admin

Location: Melbourne, Australia
Kevin I personally think you have got it right, with the information you had. You had a good point and it has been clarified for us all. It helped us know what the user wanted.

Regards,
David Head

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