Uses D1 Mini with configuration stored in RTC memory. Data updates every 10 minutes here and on https://aprs.fi/W4KRL-15. The device is housed in an AcuRite Instrument Shield. Near-term (12-hour) forecast uses the Zambretti algorithm.
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).
Power monitoring of a stand alone solar system. The system consist of a 10W solar panel and 12volt (7.2Ah) back-up battery. 2 x MAX471 current and voltage sensors . 1 x ADS1115 A to D converter. Feel free to dowload my Android app ThingVisual.