Udana Jayasekara

All embedded work

AVR traffic light controller

Context
Embedded Systems project, RMIT
Team
Course project
Discipline
Embedded
AVR traffic light controller running (video still)
AVR traffic light controller running (video still)

A bare-metal C intersection controller on AVR: a finite state machine with timers, interrupts, right-turn sensing and countdown displays.

An intersection controller written in bare-metal C on AVR, structured as a finite state machine. It drives 7-segment countdown displays and a 16×2 LCD through hardware timers and interrupts.

What I did

  • Implemented the controller as a finite state machine in Atmel Studio.
  • Extended the basic four-way design with right-turn sensing and dedicated turn signals.
  • Analysed timing performance and worst-case vehicle wait to confirm correct operation.