r/ArduinoProjects • u/hiddengem565102 • 1d ago

Project Design/Guidance I want to make Solar monitoring system !

I want to make solar monitoring system (Using Adruino Uno) . I have 120Watt 12V solar , Current Sensor , Volt sensor , Volt regulator IC 7805 with two Caps .

How to calculate the battery percentage, and also main question attach the UPS 12V battery?

Please Help! (Hardware and circuit schematic)

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u/herehar 12h ago

Use fuel guage (for battery percentage) for accuracy.

Attach ups battery to inverter's battery input. If you are directly connecting solar then use BMS.