metman
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Post by metman on Mar 29, 2009 19:42:41 GMT
Being a nutter, I need to have working shunt signals for my Harrow-on-the-Hill layout. Being totally useless with electronics I found a circuit on the net which runs my (mostly semi-automatic) signals. I need to adapt this circuit to opertate a point motor or solenoid. Can anyone help? The website with the circuit I use is below. www.kpsec.freeuk.com/projects/signal.htmA thousand thankyou's in advance  |
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mrfs42
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Post by mrfs42 on Mar 29, 2009 20:22:45 GMT
Rather than trying to reinvent the wheel, I'd look for a solenoid operating circuit - the current characteristics are completly different from LEDs.
Sorry if that's not a lot of help.
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Deleted
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Post by Deleted on Mar 29, 2009 20:56:52 GMT
There is a company out there that does make working OO scale semaphore ground signals. They are designed to be placed in a hole in the baseboard and have all electrical and mechanical parts contained in a cylindrical mounting the same diameter as the hole. Sadly, they cannot be mounted on a signal post (unless you are VERY brave at dismantling things like this). I cannot remember for the life of me the name of the company that makes them but I will ask around.
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Post by Dmitri on Mar 29, 2009 21:15:34 GMT
I'd look for a solenoid operating circuit - the current characteristics are completly different from LEDs 555's output can source or sink up to 200mA, and you can add a transistor if it is not enough. And what are voltage and current requirements for a point motor/solenoid? |
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mrfs42
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Post by mrfs42 on Mar 29, 2009 21:31:16 GMT
I agree that 555s are excellent things, but if you're going to start adding components you might as well start with a blank piece of paper.
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metman
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Post by metman on Mar 29, 2009 21:58:48 GMT
Sadly I don't have the knowledge! Perhaps add some capacitors to the circuit somewhere?
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Deleted
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Post by Deleted on Mar 30, 2009 20:57:41 GMT
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Deleted
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Post by Deleted on Mar 30, 2009 21:01:40 GMT
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Deleted
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Post by Deleted on Apr 2, 2009 22:57:01 GMT
As someone who plays with the real life train set at Harrow on the hill i'd be interested in seeing a snap of the finished product! p.s i assume you where the various shunts are located and what they are numbered?
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metman
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Post by metman on Apr 2, 2009 23:03:30 GMT
Yes, I think so. Platform 4 and 5 and the reversing siding and Platform 1 and then the shunt back into platform 2 north to south.
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Deleted
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Post by Deleted on Apr 3, 2009 1:24:36 GMT
That's correct, looks like I don't really have anything to offer you!
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metman
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Post by metman on Apr 5, 2009 13:27:03 GMT
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Post by JR 15secs on Apr 5, 2009 17:15:24 GMT
Metman you could work for Metronet installation looking at your pics very good for first time? |
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metman
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Post by metman on Apr 5, 2009 22:23:56 GMT
Ha, ha, well I don't know about that! Thanks though. I just want to get the layout underway and hopefully, it will be at Acton next year!
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metman
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Post by metman on May 2, 2009 10:17:43 GMT
You will be pleased to know, I have now made a working shunt signal. It is a very simple circuit. Using a push button to throw a point motor one way and a reed switch to throw it the other. Simple ay?
The hard bit will be linking the shunt platform repeater to it.....
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mrfs42
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Post by mrfs42 on May 2, 2009 16:21:28 GMT
mpeg? jpeg?  |
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