Water level Controller Using arduino

 

Some time when we forget to switch off the submersible pump then the upper tank water will be overflow until we get noticed. or some time in a middle of a bath the tank water get empty . and every day we need to switch  and carefully switch off the motor after the tank get filled  even we dont know how much water in the tank.

so I design this Automatic water level controller

I use Arduino nano in this project and wright a program and upload in it.

Use a ultra sonic sensor for sensing water level . i fix the sensor in the lid of water tank and connect the control box with a 4 core cable.

the control board has arduino nano and color LED 's for the water level

the red led for indicating water level below 10%

amber LED indicate water above 25%

yellow is above 50%

green is above 75 %

when the water level goes below 10% the the ultra sonic sensor sense that level and arduino code check the main voltage. if it normal   decide to switch on the pump through a relay for a second this is parallel to the start button of manual pump starter switch.

when the motor is running a long beep sound  here once and a blue LED blinking.

after the water level reach above 90% the arduino  switch a relay for a second witch switch of the manual stop button. and gives a short beep

the current water level always show in the device 

and again the water reach a level lower than 10 % the motor start again automatically.

the pump can run manually also OFF  at any time .even the this water controller is on .

NB:before use this device for the first time the tank level should be calibrated once and put the value in the Program and I updated the code.

The device work very good but the  Hot water vapor formed inside the tank make the ultrasonic sensor failure. So I remove  the normal Sensor and use a water proof utrasonic sensor and the problem solved.

future plan: i want to update this project with OLD  Display for water level indication.

and also use Solid state pump control circuit instead of relays .

also use wireless to connect sensor and the device.