ESP32 and INA219 based photovoltaic powermeter
- uses TI INA219 as current/power sensor
- works as WLAN client and AP (AP chooser included)
- WebUI with IP address 192.168.4.1
- mDNS hostname heliometer.local
- DNS hostname heliometer.local (WLAN AP mode only)
- shunt resistors 0.1 Ohm and 0.01 Ohm parallel (Rpar = 0.00909 Ohm)
- measures up to 35 amps
- measures voltage, current, power, resistance, charge and energy
- charge, energy and running time are stored every 6 hours automatically or manually via web ui
- SDA - GPIO 21
- SCL - GPIO 22
- address - 0x40
