Autonomous weather station, located in Bento Gonçalves - RS - Brazil. Hardware used: Wemos D1 Mini Pro (ESP8266) + Photovoltaic Solar Panel + BME280 sensor + TP 4056 Charging Board
Wemos, BME280 weather station using deep sleep (10 min update data) powered with battery and solar panel
Croatia Zagreb, Wemos, BME280 and DHT22 weather station using deep sleep (10 min update data) powered with battery and solar panel
ESP8266, powered by one 200mAh Li-Ion battery. Battery monitor with deep sleep test.