A magnetometer is a device that measures magnetism: the direction, strength, or relative change of a magnetic field at a ...

When a transmitter sends a Wi-Fi signal and a receiver captures it after it passes through a person, the signal’s changes can ...

In winter, it’s important to ventilate living and working spaces regularly. Here’s how to make a homemade measuring station ...

If you’ve got a smart home, or you just want to know how soaked your garden is getting in the winter, you might want to measure rainfall. There are a bunch of ways to go about it, and this capacitive ...

If you’re reading this, that means you’ve successfully made it through 2025! Allow us to be the first to congratulate you — ...

This resource provides clear explanations of how switching regulators work and how voltage boosting is achieved efficiently ...

Raspberry Pis and Home Assistant are a match made in heaven. The former is great at sensing the world around it and collecting data, and the latter is amazing at taking in data, making decisions, and ...

While fluorophore-biomacromolecule systems are relatively well known, afterglow luminophore-biomacromolecule conjugates/complexes are rarely studied. Here, the authors report the development of a ...

Optical sensors are a broad class of device for detecting light intensity. This can be just a simple component for notifying when ambient light levels rise above or fall below a prescribed level, or a ...

It's currently available for preorder at $30. Anker introduced a nifty little charger at CES, which is a refresh of the pre-existing Nano Charger. It costs $30 right now. If you want a wireless ...