Introduction: Ultrasonic Distance Sensor

What is the maximum effective range of the HC-SR04 sensor?

• 10 cm

• 50 cm

• 500 cm

• 1000 cm

What are the two primary pins used for the ultrasonic sensor's functionality?

• VCC and GND.

• Digital and Analog.

• Trigger and Echo.

• Signal and Power.

What is the main role of the ultrasonic distance sensor?

• To calculate distance by measuring light reflection.

• To calculate distance by measuring sound wave travel time.

• To sense temperature changes in the environment.

• To convert electrical signals into mechanical energy.

Why might an ultrasonic sensor sometimes give inaccurate readings? (Choose all that apply)

• The surface of the object reflects sound waves at an angle instead of directly back to the sensor.

• The sensor is too close to the object for accurate measurement.

• The ambient temperature affects the speed of sound.

• The LED connected to the circuit is too bright.