I changed the code to reset V_total variable at the start of the V_read routine. I am not able to test until I get home. But i was under the assumption that if I did not reset V_Total it would then the last value would be reused in the next readings average.

Also when implementing the low-pass filter on the voltage in what values do you think would work for the resistor and capacitor??
What is a good cut-off frequency??

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Thanks again for all the help.