Sometimes we need a non-contact liquid level sensor. There are several ways to build that, but the easiest is to try an optical liquid level sensor. You may already have an idea in mind since you are ...

Recently I came across some non-contact liquid level sensors and gathered them out of curiosity. They have been available in the market for the past few years, but this time I was lucky enough to get ...

They do so by sending a small current through their probe tip. Current flowing between the sensor and some reference (often the metal tank holding the liquid) is compared inside the sensor to current ...

One of the most common uses for smart home tech is to make the lights in your home turn on and off. Smart bulbs are reasonably affordable and simple to install, and combined with switches, can make ...

Smart switches are very useful in the smart home. They give you the best of both worlds: you can automate your lights, but you can also control them manually when you need to. Smart switches aren't ...