Measuring Voltage from Solar panel?

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hi everyone,  first of please patient me. i'm complete newbie arduino , electronics in general  :smiley-red:.
i'm trying build solar tracker , i'm little helpless trying connect together. have attached scetch, the  way thinking done?  have solar panel, charge controller , battery , measure voltage , current generated solar panel arduino uno.

do think setup correct? , voltage reading? how measure current solar panel? setup did or need 1 of current sensor breakout boards?

measuring voltage of solar panel not useful. general not change much. current vary based on irradiance.


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