Figure an Arduino most matches the "Other" category. To be specific, it isn't an Arduino brand, it is a DigiSpark, but the trouble isn't with the device itself. The problem is with a buzzer. I got the ...

This project is a simple, low-cost wearable device designed to assist visually impaired individuals in navigating their surroundings. It uses an Arduino microcontroller, ultrasonic sensor, and buzzer ...

This is an Arduino-based distance detection system using an HC-SR04 ultrasonic sensor. When an object comes within 100 cm, the system activates a buzzer with random tones and lights up an LED.