Arduino for Beginners - 2022 Complete Course - How the Ultrasonic Sensor Works + pulseIn() Function

The video tutorial explains the basics of an Arduino circuit focusing on the ultrasonic sensor. It covers the sensor's characteristics, such as its range and measuring angle, and describes how it actively measures distance by sending and receiving sound waves. The tutorial also details the use of the pulse in function to measure the duration of the pulse, which is proportional to the distance of an object from the sensor.

What is the range of the ultrasonic sensor discussed in the video?

• 10 cm to 1000 cm

• 5 cm to 500 cm

• 2 cm to 400 cm

• 1 cm to 300 cm

What is the measuring angle of the ultrasonic sensor?

• 20 degrees

• 15 degrees

• 10 degrees

• 25 degrees

What type of measurement does the ultrasonic sensor perform?

• Dynamic measurement

• Static measurement

• Active measurement

• Passive measurement

What happens when the ultrasonic sensor detects an object?

• The sensor emits a continuous signal

• The wave bounces back to the sensor

• The sensor stops functioning

• The sensor changes its frequency

What is the purpose of the echo pin in the ultrasonic sensor?

• To send signals

• To receive signals

• To measure temperature

• To control power

Which function is used to measure the duration of a pulse in Arduino?

• pulseIn

• delay

• digitalRead

• analogWrite

In which mode does the pulseIn function operate when measuring the pulse duration?

• Low mode

• Auto mode

• High mode

• Medium mode