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Sorry, I was making small mistake in wiring the signals. But now I get the correct values with the above approach. Now the issue comes in the variation. Now I get the values eg. 95mA, 100mA, 105mA,... then all of a sudden it jumps to higher value like 140mA and then all of a sudden it comes to 80mA. I am receiving the values quickly now with the approach I wrote earlier, but the variation is a lot. Is there a way I can decrease the variation?
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either your adc signal is like that or your wiring is wrong or your conversion to mA is wrong. If adc signal is like that then your filter is doing the job.
you can reduce variation by using higher order than 256.
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