AC voltage and calibration

[nickdd]

1. when AC cureent is 0A, then see your LOG what's RAW value "X".
2. use a large power AC load, use multi meter to test AC current value "Z". then see your LOG what's RAW value "Y".

use these two value make the map.
- X -> 0
- Y -> Z

My apologies, but I was confused and thought the calibration was done with the voltages of the ADC.  The "raw" amps in the output make more sense and are steady.
So I was confused there.

Will do the mappings like that and report back.