![I recently finished the prototype for a battery powered ESP8266 based temperature and humidity sensor with eInk display. Currently working on a custom PCB. : r/arduino I recently finished the prototype for a battery powered ESP8266 based temperature and humidity sensor with eInk display. Currently working on a custom PCB. : r/arduino](https://i.redd.it/q0c5386r08p61.jpg)
I recently finished the prototype for a battery powered ESP8266 based temperature and humidity sensor with eInk display. Currently working on a custom PCB. : r/arduino
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How long will a 9V alkaline battery power my circuit (Arduino, DHT11, ESP8266)? - General Electronics - Arduino Forum
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