We may earn a commission from links on this page. If you have a room with no overhead light fixture, or one in which the main light switch isn’t convenient, you can solve your problem by adding a ...

We may earn a commission from links on this page. In a power outage, having a back-up source of light is important, and while there are lots of battery-powered as well as solar-charging options, ...

The size and price of the ESP wifi modules have quickly made them into one of the preferred building blocks for IoT devices. Unfortunately they are not particularly well suited for very low power ...