Using the sensor
This sensor changes resistance depending on the level of liquid it is in. This makes it easy to read out this sensor from an Arduino with a resistor divider circuit using an 560Ohm resistor (we include a matching resistor).
Connect the black wire of the sensor to Ground. Connect the white wire to the 560Ohm resistor. Connect the other side of the resistor to VCC (e.g. 5V, AREF, 3,3). Connect the analog pin (A0) between the resistor and the white wire.
- Black: GND
- Red: VCC
- White: RSense
These are the “barebones” sensors without any additional circuitry inside (Output module “Voltage Divider”). They are fully assembled, enclosed and potted with a 3-pin JST connector. We include a separate 560Ohm resistor.
We stock both standard and chemical (teflon coated) types in many lengths.