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 happens when the ultrasonic sensor receives a pulse back?

Describe how the pulseIn function works in measuring the duration of a pulse.

What are the two modes of the pulseIn function and when are they used?