How to make a slow moving turnout actuator that controls signal lights which lights show turnout position.
Slow Moving Turnout Page Summary
Learn how to create a slow-moving turnout actuator with position indicator lights using an Arduino microcontroller. Our step-by-step guide includes instructions on adjusting turnout position, speed, and approach warning light blink rate. Check out the circuit board images, video demonstration, and information on the kit for easy assembly. Power the system with 5 volts DC and customize it to meet your LED requirements.
Slow Moving Turnout Controller Overview
The controller allows for adjusting turnout position and speed. It also allows for adjusting the blink rate for an approach warning light.
An Arduino micro controller is used for the control program. It is mounted on a circuit board that makes setup easy.
These images show the circuit board.
There are lights on the three points of the turnout.
On the entrance green shows when the turnout is in the normal route position. When in the divergent position, yellow shows.
When in the divergent position a yellow approach light flashes.
The other two points have red and green lights that show whether the turnout is aligned for entry.
There are also two lights for mounting on the turnout control panel that show if the turnout is in the normal route or divergent positions.
All connections are made using screw terminals.
Pin sockets allow the micro-controller to be removed for whatever reason.
Three mini potentiometers allow adjustment of turnout position and speed. A fourth allows for adjusting the blink rate for the approach warning light.
This circuit board and parts come as a kit that you can get here.
Slow Moving Turnout Video Demonstration
Video in editing.
Slow Moving Turnout Arduino Programs
The Arduino in the kit comes fully programmed. The potentiometers are used to change the relevant program settings..
Assembly Of The Circuit
All connections between parts are made via traces on the circuit board. The circuit board shows exactly where the elements are placed on the board,
So it is a simple matter of inserting the parts, soldering them in place with a fine point soldering tip on which there is a minuscule drop of solder and finally trimming off any protruding wires or pins to a comfortable length.
The screw terminals come as 2 pin units. They are designed to be joined by using the slots on each side. So, for example to make a 4 pin screw terminal, join two two pin terminals.
As stated above, the Arduino mini pro is fully programmed.
Operation Of Your Slow Moving Turnout
There are 11 connections for wires to your LEDs. The anodes and cathodes are labeled.
The resistors in the kit are 620 ohms. You may want to change them to meet the requirements of your LEDs.
Use a single pole on off switch. In the off position, the turnout will move to the Divergent position In the on position, the turnout will move to the Through position.
Power the system with 5 volts DC.
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