Measuring volume with eTape Liquid Level Sensor + Arduino
The easiest way to do it is to create the "Simple Voltage Divider" circuit found in the datasheet and connect that to an analog input. Apply power to pin 1, ground to pin 2, and connect pins 3 and 4 together to the input. You can then perform a normal ADC conversion and then from there determine the height of the liquid.







simulate this circuit &ndash; Schematic created using CircuitLab