1. Traffic Light Synchronization
by: Avneesh Kohli, Eric Harmatz, and Govil Gupta

2. Cluster 1: Adventures in Embedded Computer Systems
Instructors: Dr. Rajesh Gupta, Dr. Choon Kim, Shirley Miranda, Arash Arafee, Bridget Benson

3. The Problem Over 6 million accidents per year
Nearly 50,000 deaths per year
60% of accidents by human error
$230 billion spent annually

4. Purpose In need of a better safety traffic system
Traffic lights controlled by timers rather than present cars
Synchronization of lights can save time and lives

5. Background Information
C Programming Language
PSoC Devices
CapSense / Touch-Based Input
Hardware / Wiring
Multi-chip Communication

6. Hypothesis Use CapSense to represent car
Light turns green when car approaches intersection
Perpendicular lights change automatically
Two sets of lights are synchronized 8 2 3 4 5 6 7 9

7. Materials 2 Cypress PSoC CY3214 Chips 3 LED’s (Red, Yellow, Green)
CapSense module
PSoC Designer 5.0
PSoC Programmer
USB Mini-Programmer
Wires

8. Procedure Open PSoC Designer Select Chip Level Project
Add CSD User Module
Configure CSD
Add 3 LED User Modules
Configure LED’s

9. Open main.c
Program main.c
Build project using Imagecraft compiler
Transfer program to chip
Connect wires to breadboard and ports

10. Sample Pictures

11. Video Demonstration

12. Results and Data Successful, working device
Realistic light cycle delays
Very responsive to all finger motions

13. Conclusions Successful culmination of our knowledge of C and hardware
Can be improved with a more efficient code
Can be expanded to use 2 CapSense modules

14. Applications/Future
Incorporate into suburban streets to reduce intersection accidents
Applicable to any areas with controlled traffic
Less traffic, save people, save time