Obstacle Detecting Glasses with Arduino

What is a limitation of using ground-level ultrasonic sensors for visually impaired individuals?

• They cannot detect obstacles at face level.

• They are too expensive to use.

• They require constant maintenance.

• They are not compatible with canes.

Why is the Arduino Uno used in the educational project despite its size?

• It is the lightest board available.

• It is the most affordable option.

• It is the most commonly available and introductory board.

• It has the highest processing power.

What is a potential alternative to using a buzzer for feedback in the project?

• A temperature sensor

• A vibration motor

• A sound sensor

• A light sensor

Which component is directly connected to the Arduino without a breadboard?

• The ultrasonic sensor

• The temperature sensor

• The vibration motor

• The light sensor

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

• To set the maximum distance for the sensor

• To adjust the volume of the buzzer

• To determine the distance at which the buzzer starts beeping

• To control the power supply to the Arduino

How does the code adjust the beeping speed of the buzzer?

• By using a temperature sensor

• By mapping the distance to a delay variable

• By adjusting the volume

• By changing the power supply

What happens when the distance measured is greater than the threshold?

• The buzzer beeps faster.

• The buzzer turns off.

• The buzzer changes its tone.

• The buzzer beeps continuously.