Capacitive level sensor arduino - water level meter using a capacitive sensor - YouTube
A capacitive level sensor The drawback of capacitive level sensors is that they need to be calibrated for the To program the Arduino in the sensor.
Video embeddedAll credits here go to Paul Badger and his capacitive sensing library for Arduino. I have just modified his demo code to measure the water level. More info.
PepperlFuchs offers capacitive limit switches for level measurement of liquids, granular solids, conductive and nonconductive media.
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CapacitiveSensor Detect touch or proximity by capacitve sensing
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