Arduino Pedestrian Traffic Light

A simple Arduino project simulating a pedestrian traffic light with 3 LEDs, a button, and a 16×2 I²C LCD. When the button is pressed, the light runs a timed cycle: red → red+yellow → green. The number of button presses is saved in EEPROM.

Build:

Open in Arduino IDE Board: Arduino Uno Libraries: LiquidCrystal_I2C, EEPROM (built-in) Upload and run

How it Works:

Idle: red LED on, LCD shows “Wait” and press count Button press: starts countdown (default 10 s, walk = 5 s) Timer1 ISR generates 1 Hz ticks to update countdown EEPROM stores press counter across resets

EEPROM:

Byte 0 → Version Byte 1 → Total time Byte 2 → Press counter

Demo video:

https://drive.google.com/file/d/1qA9mkeBKlTggDvnrXUO229TrsHAMfr8c/view?usp=drive_link