waterlevel meter with 5 steps

Thread Starter

Slowman

Joined Mar 11, 2010
2
A new guy here. Great idea on the reed switch. How would I light 5 leds sequently as the level changes. Also need to light all 5 to test.
 

someonesdad

Joined Jul 7, 2009
1,583
Another approach (that's used in RV water tanks) is to put electrodes on the tank wall and measure the current -- if water is not touching, the resistance will be high, but if the water is touching the electrode, it will be on the order of a MΩ or so.
 

retched

Joined Dec 5, 2009
5,207
is to put electrodes on the tank wall and measure the current
But, dont do that if measuring fuel. :) Unless you want a lot less fuel and a lot more heat.

How much room do you have?

If you have enough room, you can implement a toilet tank-like float arm.

You can read this many ways. A magnet on the arm that passes 5 hall sensors, or five microswitches or even a linear slide POT.
 
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