Getting the quantified NTU of Turbidity sensor SKU SEN0189

[zachary_fields]

5V function to calculate NTU:
y = -1120.4x² + 5742.3x - 4352.9

3V3 function to calculate NTU:
y = -2572.2x² + 8700.5x - 4352.9

Sources:

• Turbidity_sensor_SKU__SEN0189-DFRobot
• Getting NTU from Turbidity Sensor on 3.3v - #14 by zachary_fields