Here is a tested Arduino project that uses 3 sensor probes as water level indicator with 3 leds and one LCD display + a simple controller that turns on a motor when the water has reached the desired ...

Water level sensors of the water tank at roof, and water level sensor of the water tank at basement (ground) can be connected to the circuit through sockets J1 and J2 respectively. Socket J4 is the DC ...

No, it would not work if one of the pins 11 or 12 was connected to ground. One terminal of the sense capacitor (the two copper traces on the water level sensor protoboard) is connected to ground ...

A low-cost (~$100), do-it-yourself (DIY) ultrasonic water level sensor/datalogger has been designed, constructed, and tested for use in education, citizen/community science, and research settings. The ...

I now have it "working" using two types of sensors. I have a float sensor which just gives me a binary on/off. This works fine and would probably do what I need. Bonus for it being made for wet ...

I've got an Arduino/Bluetooth (Bluetooth Bee-Standalone). I've hooked it up with an HC-SR04, it's intended to be mounted at the top of a rain barrel to ...

The XBee can detect the water level by testing for a closed circuit between the two electrodes of any sensor module. The water acts as a sort of switch that closes the circuit.

It will switch off only after the water drops below level A. Figure 2 illustrates the complete circuit. Using a rail-to-rail op amp for U2 allows for the application of a single 5-V power supply.