I would like to use Arduino to control switching on my model railroad and I need a bit of help. There is already one pretty good solution out there, but it is very proprietary and for that reason I'm trying to use Arduino. The switch motors are Circuitron Tortoise slow motion switch machines. They require very little power.
Particularly I want the ability to control multiple switches with just one button, so I hit one button and all the needed switches line up as they need to be. That obviously is super easy with Arduino.
The issue I have is how to power the switches. I saw that in another forum someone is using h-bridges and that seems like a good option. But I want to control as many as possible with a single Arduino, and do so as cheaply as possible.
The switches only require 4ma during operation and 15 to 16 ma during stall and need 9 to 12 volts DC.
So would h-bridges be my best bet? I'm not terribly good with electronic circuits, so simplicity is also important to me.