This document outlines the steps to design an Arduino-based traffic signal system using MATLAB and OrCAD software. It includes designing the schematic circuit and PCB layout in OrCAD, creating a Stateflow model in MATLAB to control the traffic light timing logic, and deploying it to an Arduino board. The system uses LEDs to indicate signals for 4 lanes and the Stateflow model controls the timing of the red, yellow, and green lights according to a provided timing table.

1. Arduino based Traffic Signal System
using MATLAB
and OrCAD

3. Design Process
Cycle

4. Table of Contents:
Step1: Required Hardwares
Step2: Required Softwares
Step3: Schematic Circuit (OrCAD)
Step4: PCB Layout (OrCAD)
Step5: Artwork (OrCAD)
Step6: Board after Etching Process in PCB Fabrication
Step7: Board after Drilling in PCB Fabrication
Step8: Component Assembling and Soldering
Step9: Timing Table for Traffic Light Signal System
Step10: Stateflow Model (MATLAB)
Step11: Logic inside Stateflow Model (MATLAB)
Step12: Add Events and Outputs to Stateflow Chart (MATLAB)
Step13: Deploy to Hardware (MATLAB)
Step14: Experiment Results

5. Required Hardwares:
To run this example, you need the following hardwares:
- Arduino UNO
- Arduino USB Cable
- Jumper Wires (Male-Female)
- 4 Red LEDs
- 4 Green LEDs
- 4 Yellow LEDs
- 12 pin Connector
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6. Required Softwares:
To run this example, you need the following softwares installed:
- MATLAB 2014
- Arduino Hardware Support Package
- OrCAD
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7. Schematic Circuit of Traffic Light Signal System:
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8. PCB Layout:
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9. Artwork:
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10. Board after Etching Process:
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11. Board after Drilling:
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12. Component Assembling and Soldering:
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13. Lane 1 Lane 2 Lane 3 Lane 4
10G 10R 20R 2Y
LANE 1
LANE 2
LANE 3
LANE 4
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14. Lane 1 Lane 2 Lane 3 Lane 4
10G 10R 20R 2Y
2Y 10G 28R
LANE 1
LANE 2
LANE 3
LANE 4
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15. Lane 1 Lane 2 Lane 3 Lane 4
10G 10R 20R 2Y
2Y 10G 28R
28R 2Y 10G
LANE 1
LANE 2
LANE 3
LANE 4
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16. Lane 1 Lane 2 Lane 3 Lane 4
10G 10R 20R 2Y
2Y 10G 28R
28R 2Y 10G
8R 2Y 10G
8R
LANE 1
LANE 2
LANE 3
LANE 4
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17. Make the Stateflow Model as given below:
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18. Create a logic inside Stateflow Chart
as shown below:
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19. Add event and output to Stateflow Chart:
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Model Explorer Window Name: T
Scope: Input from Simulink
Trigger: Rising
Name: g1
Scope: Output
Name: y1
Scope: Output
Name: r1
Scope: Output
Name: g2
Scope: Output
Name: y2
Scope: Output
Name: r2
Scope: Output
Contd.,

20. Model Explorer Window Name: g3
Scope: Output
Name: y3
Scope: Output
Name: r3
Scope: Output
Name: g4
Scope: Output
Name: y4
Scope: Output
Name: r4
Scope: Output
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21. Deploy to Hardware:
Click on ‘Tools’ -> Run on Target Hardware -> Prepare to Run
Target Hardware = Arduino Uno
Click ‘Deploy to Hardware’.
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22. Pin Configuration:
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23. Experiment Results:
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