All of these projects either use minimal components, short (and easily understandable) codes, or both ... with only an Arduino UNO, ultrasonic sensor, force-sensitive resistor (or push button ...

And if you love science and technology, you won’t find a better hobby than these monthly Arduino projects ... that uses an ultrasonic sensor, a reflex game that lets you test your reflexes ...

This one is an unusual smart home project, potentially - how to monitor a fish tank’s health with an AI-enabled ultrasonic sensor system. The detailed project is highlighted on Hackser.io and features ...