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 ...

Take for example this ESP8266 clock by [ZaNgAbY] that’s ... is thinking of adding a temperature and humidity sensor, and a light sensor that can dim the LED display depending on the ambient ...