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Step 4FET with 2.2Ohm load
it was fairly simple to add a FET with "on" resistance of ~8mOHM (no barly any power disipation on it) and a 2.2 10W resistor .
I connected two A/D pins from the Arduino to the resistor poles and subtracted the values to get the exact volatge drop on the resistor .
Now I samples them every second and acumulated the current (I=DeltaV/R).
I also added a buzzer to indicate when charging was over and stoped the discharge .
I connected two A/D pins from the Arduino to the resistor poles and subtracted the values to get the exact volatge drop on the resistor .
Now I samples them every second and acumulated the current (I=DeltaV/R).
I also added a buzzer to indicate when charging was over and stoped the discharge .
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