Water Level Sensor

[Super God]

I've encountered a similar problem and found this:
http://www.solorb.com/elect/solarcirc/tankfill/index.html

Yes, it's for toilets, but it can be easily adapted to any other water level sensor application.  I'm personally going to use this. Good luck!

[kentoot]

Hi,
First of all you'll have to know your logic voltage level, is it 3v, 3.3v, 5v, 9v, 12v or 15v ? So let's say you power your logic ICs with 12v dc, that means your logic 'high' would be 12v, and logic 'low' would be 0v.

Next, preferably to make things simple, all inputs only have 2 states, either ON or OFF (digital). From the schematics you've provided, inputs are active high, meaning a sensor should provide a 'high' signal (12v) when the water has reached it or when the water is higher (sensor submerged). When the water level is lower than a sensor, it should output a 'low' signal (0v).

If you use a float sensor that connects when water is at or above its level, and disconnects when water is below it, then all you gotta do is connect 1 pin of the float sensor to your logic input, while the other pin connects to your logic 'high' level (12v). To avoid floating the input logic, put a pulldown resistor at each input.

Ofcourse you can use other types of sensors, but what's important is that they work with similar logic.
   

[Draco Rylos]

Sorry bout the time between posts, i've been working and haven't had much time to post here on this board. My system will be running 12 Volts so my system would need to be set up for 'High' when the water is at the level of the sensors and 'Low' for when it is below the sensors, right?