That's where an ESP8266 comes in. It's basically a Wi ... For example, I've seen them used for the following uses: Pressure sensor in a bed to activate a going-to-bed routine Adding wireless ...

You have an ESP8266 board like the Wemos D1, a Li-Ion battery, you want to build a small battery-powered sensor that wakes up every few minutes to do something, and you don’t want to delve into ...