Servo Motor Control for Model Railways Part 3 of 3 - Semaphore Signals

This is the final video in a three part guide on how to connect servo motors to an Arduino and control them using JMRI in order to throw points or operate semaphore signals on a model railway.

This will work for both analogue and digital layouts and is a step towards layout automation.

It's also very cheap compared to other methods of operating points and signals such as using digital accessort decoders, capacitor discharge units (CDUs) and solenoid motors.

Links to other parts of the series:
Part 1 -    • Servo Motor Control for Model Railway...  
Part 2 -    • Servo Motor Control for Model Railway...  

Calibration and Servo Sketch Files: https://github.com/LittleWicketRailwa...

Links to resources needed in tutorial:
JMRI software - www.JMRI.org

Ebay and Amazon Affiliate Links
(Full disclosure, as an Amazon Associate and Ebay partner I earn from qualifying purchases through these links and this helps to support the channel)

Arduino Uno:
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Servo Driver Board (PCA9685):
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SG90 Servos:
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Variable Voltage Power Supply:
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26AWG Servo Cable:
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Crimping Tool:
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Chapters:
00:00 - Introduction
01:39 - Safety
02:03 - Components & Tools
02:59 - Step 1 - Connect servo and upload calibration sketch
03:45 - Step 2 - Mount signal and servo on baseboard
04:45 - Step 3 - Calibrate range of motion
06:34 - Step 4 - Repeat steps 1-3 for second servo
09:02 - Step 5 - Modify servo sketch and upload
10:27 - Step 6 - Create signal heads in JMRI
12:38 - Step 7 - Place signal heads in layout editor
13:44 - Summary