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Topic: analog read solar cell (Read 914 times) previous topic - next topic


I would like to use the analog read on the arduino to measure the voltage from a usb pocket solar charger.
Would connecting the solar charger directly to the analogread could damage the arduino?

I think voltage of the solar charger is 3.3 - 5v and max current 500ma.

basically I want to point a laser at the solar cell and when it reaches a certain threshold {do something}.

charger like this


You either need to know that the voltage never exceeds 5V, or you need a voltage divider.
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