Build an Obstacle-Detecting Walking Stick

This video tutorial explains how to build a prototype of an obstacle-detecting walking stick using an Arduino. The stick uses an ultrasonic sensor to measure distances to obstacles and a buzzer to alert the user. The tutorial covers the construction of the prototype, the circuit's functionality, and the Arduino code that controls the sensor and buzzer. It also discusses potential customizations and improvements for real-world applications.

What is the primary function of the ultrasonic distance sensor in the obstacle detecting walking stick?

How does the buzzer indicate the proximity of an obstacle?

What components are mounted on the wooden dowel for the prototype?

What modifications can be made to the design for long-term use?

Explain how the Arduino processes the distance measured by the ultrasonic sensor.

What is the purpose of the threshold variable in the code?

Describe how you could customize the project to improve its functionality.