Simple weather station by using Ti HDC1080 temperature & RH sensor and ESP8266 module configured in deep sleep mode. The whole unit is powered by 1000mAH lipo battery and a small solor panel (below 1W).
The weather station is a prototype and you must not expect 24/7 operation neither accurate measurements. Improvements are coming soon. Check this channel for data analysis: https://thingspeak.com/channels/279384