Intersection model
Aug 2017 - Dec 2017
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This was the culminating project for EGR 226 Introduction to Digital Systems. It integrates all of the material presented in the course throughout the semester including: state machines, interrupts, timers, and the capture and compare registers. The objective was to use the learned material to produce and display the workings of a traffic intersection. The manifestation of the intersection, its design, features, and presentation were left open ended for the students creative minds.
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Students had the opportunity to work as a team or individually on this project. I elected to work alone making me the sole contributer.
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Lessons:
Material selection makes a big difference in the overall quality of the final product.
Outcome:
Students and faculty really enjoyed the aesthetic and functionality I was able to deliver with this project. It was displayed proudly on GVSU's Engineering Project Day "The Future Looks Bright".
Overview
An interactive 4-way intersection complete with crosswalks and left turn lanes. Users can control the various features of the intersection via the button array on the front. This project was later featured in GVSU’s “The Future Looks Bright” project day.
↓↓ Photos ↓↓
Build Progression
The project was built using a wooden frame with a polycarbonate top sheet. All the wiring is located below the intersection and train model landscaping features were used to produce a realistic aesthetic.
Software Design
State machine logic was implemented to control the various light sequences. Interrupts were used to adjust the light sequencing when a crosswalk button was depressed, an emergency vehicle was approaching, or the up/down buttons were pressed for the LCD and flag pole.
Hardware Design
Solderable breadboards populated with transistors and resistors were used to switch and power the LEDs for sequencing. Momentary switches and potentiometers where provided for the user to control the intersection features and an Arduino paired with a tv speaker was used to play the music.
End Result
The various materials used in this project really brought it to life. From a distance it doesn’t look like much but the level of detail really set it apart.
Videos
Short Demo