sen0508

I think the placement should be as same as what is shown here: https://wiki.dfrobot.com/Non_contact_Flexible_Liquid_Level_Sensor_SKU_SEN0508

The working principle of SEN0508 is to use the inductive capacitance of water to detect the presence of liquid, in the absence of liquid close to the sensor, the sensor due to the presence of distributed capacitance, so the sensor exists a certain amount of static capacitance to the ground, when the liquid level slowly rises close to the sensor, the parasitic capacitance of the liquid will be coupled to the static capacitance of this static capacitance, so that the final capacitance value of the sensor to change the value of the capacitance of the change, and this change of capacitance signal then The changed capacitance signal is then input to the control IC for signal conversion, the changed capacitance is converted into a certain amount of change in the electrical signal, and then by a certain algorithm to detect and judge the extent of this change, when the change exceeds a certain threshold, it is considered that the liquid level reaches the sensing point.

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