Living objects with a body temperature above 0°C emit heat as infrared radiation, also known as thermal radiation, which is invisible to the human eye. PIR sensors, designed for this purpose, can ...

This is the fourth episode in our six-part video series where Bob Clagett of I Like to Make Stuff takes on home DIY projects inspired by the features of the new Ford F-150. You know the drill: You ...

The best DIY home security systems are affordable and easy to set up without a professional. NerdWallet is committed to editorial integrityMany or all of the products on this page are from partners ...

* to know the basic concept and usage of this library before other examples。 * 2. erase the full flash or call homekit_storage_reset() in setup() * to remove the previous HomeKit pairing storage and * ...