FreeManGH:
Values ??can be positive or negative.
Relative to what.
If you make your "most negative" point your "0volt reference point" and attach that to the arduino ground point then all other differences will be positive.
FreeManGH:
Values ??can be positive or negative.
Relative to what.
If you make your "most negative" point your "0volt reference point" and attach that to the arduino ground point then all other differences will be positive.