A dust sensor is an optical electronic system to detect fine particles such as dust. In principle, an optical dust sensor detects the dust particle concentration the in air by using an optical sensing ...

This post is a review of the popular waterproof ultrasonic sensor JSN-SR04T. I hope this will serve as a backdrop for some interesting ultrasonic distance sensor experiments and projects. A number of ...

That's why something that is listed as IP67 can say "dust-tight" but only "water-resistant." (None of the ratings are fond of using the word "proof" because nothing is ever fool-proofed in the long ...