Battery powered weather station, charged from solar panels. Sensors include... BMP180 (Pressure), SI7021 (Humidity), DS18B29 (Outside & internal temperature), INA219 (Battery Voltage & Charge Current), Small solar panel (Measure light level). Upda
This is a live data feed of my custom Arduino powered weather station. It uses LoRa to transmit data every 20 seconds.
10 Wp solar panel, two 3400 mAh Li-CoO2 18650 batteries in parallel, permanent small ~50 mW load. A shunt regulator limits battery voltage to 4.1 V. An externally powered ESP32 measures sol and bat powers for ThingSpeak.
Observing and monitoring state of Charge of Lithium battery