The hardware was assembled by connecting the Arduino UNO R4 WiFi, the PZEM 004T, the current transformer, and the OLED ...

From practical tools to fun upgrades, these budget items add function, style, and ease -- making routines smoother, storage ...

Most phone and computer OSes create a profile for each Wi-Fi network you connect to. If you tell the system to forget the network, it also forgets the password, so this trick won't work in that case.

We've tested hundreds of smart home products in more than 20 categories to help determine which ones are best for every room in (and out of) the house. I'm PCMag's managing editor for consumer ...