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 ...

The various development boards such as the NodeMCU or Wemos D1 make working with the ESP8266 an absolute breeze ... programming jig that uses pogo pins. If you have to program these boards ...