Ultrasonic sensor:
https://bit.ly/3eNsqrs

Recommended soldering iron- TS100:
https://bit.ly/3e81eUD

In this video, lets connect the HC-SR04 Ultrasonic sensor to our Arduino and learn how to code the ultrasonic sensor. We also learn how to run the sensor.
The ultrasoinc HC-SR04 sensor can be used to make obstacle avoidance robots, or ultrasonic radar or other ultrasonic arduino projects.
This tutorial for the HC-SR04 sensor should teach you how to code easily and build your arduino projects.