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Post by nebrzephyr on Dec 15, 2018 13:42:36 GMT -8
I have seen reference to turnout control using servo. Specifically using push buttons. But I can find anything on the web that specifically states HOW. My assumption is you need to modify the servo from 3 wire to 2 DC power control.
Anyone on the forum familiar with this approach? (Not interested in the Arduino approach.)
Thanks. Bob
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Post by kentuckysouthernrwy on Dec 15, 2018 14:56:50 GMT -8
Anyone on the forum familiar with this approach? (Not interested in the Arduino approach.) Thanks. Bob Yes, You’re welcome...Karl |
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Post by nebrzephyr on Dec 15, 2018 16:46:07 GMT -8
Anyone on the forum familiar with this approach? (Not interested in the Arduino approach.) Thanks. Bob Yes, You’re welcome...Karl OK Karl, I’ll bite. HOW do you do it? Bob |
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Post by kentuckysouthernrwy on Dec 15, 2018 16:49:43 GMT -8
VERY Carefully.... www.tamvalleydepot.com/products/octopusservodriver.html#oct031I have a whole pile of their stuff, boards,etc, bought servos other places, 3d printed my own servo mounts and have had a ton of life get in the way of doing anything with them. Litchfield station sells a lot of their items for a decent price, and the web page looks like a sale was on recently for direct purchase. I have zero to report on personal experience but have an acquaintance that has had success using this stuff. I plan on using servos for the yard ladder to my staging yard. Tam Valley’s website has a lot of things in it but I found it to be less concise than I liked. I think electronics folks assume their customers know more than most of us do. Maybe some do. If I put anything else on my back burner I’ll probably start a real fire.....  Sorry for the glib answer. I had a few other things going on before could research this.  Good luck, love to see what you come up with. |
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Post by nebrzephyr on Dec 15, 2018 19:34:53 GMT -8
Karl, no problem. I’m thinking there is away to turn the servo into a Tortoise clone inthe sense that you can reverse the direction of the servo “arm” by switching the polarity. I just need to find out HOW to wire the servo. I’m guessing some “dis-assembly” will be required.  I’m a cheap skate so trying to avoid the various commercial controllers if possible. Bob |
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Post by kentuckysouthernrwy on Dec 16, 2018 7:12:55 GMT -8
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Post by trainguy99 on Dec 18, 2018 4:23:16 GMT -8
If you want a plug and play servo switch control system there's the Walthers option:
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Post by scl1234 on Dec 18, 2018 4:41:40 GMT -8
Wouldn't each turnout need a polarity reversal switch (for DC servo direction), and the push button for moving the points? Maybe they could perhaps be the same switch(?), albeit at extra $$.
I tend to be more absent minded with each 5yrs of life, so there's that.
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Post by nebrzephyr on Dec 18, 2018 9:29:56 GMT -8
Wouldn't each turnout need a polarity reversal switch (for DC servo direction), and the push button for moving the points? Maybe they could perhaps be the same switch(?), albeit at extra $$. I tend to be more absent minded with each 5yrs of life, so there's that. You on the right track. I have a mock up using push buttons and it works. If you go to the Circuitron page, and look at power option 2, this is the setup you need. Just sub in 2 PBs for the toggle switch. You really need a "momentary" switch as in this application the servos are not really meant to be under constant power (pressure), like the Tortoise. I'm using PECO switches, with the factory over-spring installed, so one really doesn't need constant pressure, again like the Tortoise. Bob |
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Post by canrailfan on Dec 18, 2018 11:46:59 GMT -8
This brought Elmer Fudd to mind... "Be vewy, vewy careful." |
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