Measuring outside temerature , relative humidity , dew point temperature, and barometric pressure with a solar powered esp8266-12 wifi module a Si7021 sensor and a bmp180 barometric pressure sensor. Power source is a 2000mah 18650 li-ion battery cell.
Solar Panel DC output parameters and Inverter AC power output parameters are shown here. This uses a 12V 200 watt panel driving a simple car inverter of capacity 200 watts. A fixed load is connected to find out variation of DC power output with sun's pos