This simple STM setup utilises a piezoelectric actuator constructed by deliberately cutting a piezo speaker into four quadrants. With individual drive wires attached to the four quadrants.

Connect a piezo buzzer or speaker to pin 11 or select a new pin.

This project simulates a modern car blinker system using an Arduino. It features sequential LED animations for both left and right turn signals, a buzzer for realistic blinker sounds, and button ...