Since my latest ESP8266 temperature humidity IoT logger project is up and running I have decided to cut the last wire – power. There are more approaches how to make ESP8266 running on a battery, but why not to have a unique one… 😎 The idea is to use only 5µA AtTiny13A (5 microA 2-3V) … Continue reading Battery Powered ESP8266 IoT – Temperature Sensor