Hi guys,
I am trying to read current produced by a small solar cell. When I just hook up the cell in direct sunlight, it gets about 0.66 volts, which is about right. But when I hook it up to the Arduino through the ACS712 Hall effect current sensor, it shows 5.0 volts. I know that it should be printing about 2.5 volts, and therein lies the problem. My diagnosis is that it is for some reason printing the voltage received from the Arduino; my question is how do I get it to print the voltage from the solar cell?
Thanks