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When we connect battery to solar charger, so the voltage at battery terminals shows the voltage of solar charger. Then software will also read the same voltage then how can we cut off charging in this case because as soon as we stop charging, arduino now will read the actual battery voltage which will be low so it will again start charging. Didnt you faced this kind of situtation?
As you can see in the image, solar volt is 13.7 and battery is 11.97v/12.0v which is correct but suddenly it shows solar volt: 13.06 and battery 13.04 which is wrong. SO how to protect from overcharging in this case.
I tried adding the delay but it still shows solar voltage sometime.
Thanks for sharing this great project. I started it and followed your schematic. I am getting exact voltages of solar and battery. When I start my charging, voltage starts fluctuating. At one time is shows 13 .0 then it shows 11.0 and this keeps on going. I studied it more and found out that it shows voltage of solar then it shows voltage of battery. Why is this happening. Any suggestions
Facing the same problem. How did you solved it.?
I am facing a problem. As soon as the mosfet is turned on, arduino starts showing wrong values of voltages. Like if the volts is 12.5 it shows 13.78 due to which my logic is getting wrong. Any suggestions where I am doing mistake