Inexpensive servo controller for points

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GWR_fan
Posts: 4822
Joined: Sun Apr 29, 2012 11:57 pm
Location: Antipodes

Inexpensive servo controller for points

Postby GWR_fan » Sun Sep 17, 2017 11:02 pm

While researching the excellent Dave Fenton "Megapoints" system, I found this video on You-Tube describing a very inexpensive method for operating a point throwbar with a servo. Dave Bodnar is a well respected railroad electronics modeller in the States. The servo tester is around $2.00 Aud including postage on eBay. Looking at the tester it appears that you could operate multiple (3) servos from just one controller.

https://www.youtube.com/watch?v=P-vbWRBx03Q

Explanation here -
http://www.trainelectronics.com/Servo-s ... ontroller/

ianjeffery
Posts: 48
Joined: Tue Jun 14, 2016 10:03 am

Re: Inexpensive servo controller for points

Postby ianjeffery » Mon Sep 18, 2017 5:36 pm

if your interested, I am also making a point/signal controller using arduinos.

mine will allow you to use a manual keypad ( local or other "signal boxes" ), or dcc accessory control, and will allow up to 16 per "signal box"

i'm currently in the testing stage at the moment.

its currently cost me about £20 or so for all the parts.. including the price of my arduino dcc interface ( www.dccinterface.com ).

ill post some pictures as soon as i get time.

GWR_fan
Posts: 4822
Joined: Sun Apr 29, 2012 11:57 pm
Location: Antipodes

Re: Inexpensive servo controller for points

Postby GWR_fan » Mon Sep 18, 2017 6:52 pm

Very interesting. Please report on progress when completed.

dan8400
Posts: 718
Joined: Sun Nov 01, 2009 6:02 pm
Location: Midville, Lincolnshire
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Re: Inexpensive servo controller for points

Postby dan8400 » Mon Nov 06, 2017 8:51 am

I am using this to operate a magnet for starting and stopping traffic on my faller car system. Works really well. I am driving three servos from one set up (two controllers, one switch). This operates three parking slots in a lay-by simultaneously.

I wish I knew about this before I'd built and wired my layout and point motors.

You can easily trim the throw with the two controllers.

It's very simple.

Thanks
Dan
My Layout Thread: viewtopic.php?f=22&t=30117


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