This instructable will teach you how to use MatLab to code an Arduino to control part of a railroad system. Supplies For this project you will need:ComputerArduino BoardMatlab 20173D PrinterModel Train2 Photo Sensors1 Blue LED Light2 Red LED Lights1 Servo Motor1 Piezzo SpeakerUSB Cord3 330 Ohm Re…By: lwhitus // Read more: original article.