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Friday, April 7, 2023

on video Automatic water level control using 555 IC


 Automatic Water Level Controller for Pump using 555 Timer IC

Automatic water level controller for the submersible pump and overhead tank with 555 timer IC. Also check the underground tank water level.

In this mini electronics project, I have shown how to make an automatic water level controller for the submersible pump and overhead tank with a 555 timer circuit.

This automatic water pump controller also checks the water level of the underground tank, before starting the pump.

And there is also an emergency stop switch to stop the water pump manually.


I have used a 30A relay to easily control up to 1 HP pump with this simple automatic pump controller.

I have made the complete circuit on a homemade PCB using a plastic sheet. But you can also download the Gerber file and order the PCB.


The circuit is very simple, You can easily make this project with some basic electronics components.


I have used 555 Timer IC to make this water pump controller. And here I have used a 30A relay which can be used up to 1 HP pump.


If you want to control the pump above 1 HP, then you have to select the Relay as per the Pump voltage and current rating.


Relay coil voltage: 12V DCRelay


Contact Rating: As per the Pump rating


Required Components:

555 Timer IC (1no)

BC547 NPN Transistor (2no)

1k 0.25-watt Resistors (2no)

22k 0.25-watt Resistors (3no)

180k 0.25-watt Resistor (1no)

1M 0.25-watt Resistors (2no)

LED 1.5V 5-mm (1no) 1N4007

Diode (D1) (1no) 100nF (104)

Capacitor (C1) (1no) 12V

SPDT Relay (Contact Rating 30A) (1no)

Connectors & IC base (4 pin)

Slide switch (1P2T) (1no)

Zero PCB or plastic sheet

How This Automatic Water Level Controller Works

In the above picture, the container on the left side is the overhead tank and the container on the right is the underground tank.


The pump will automatically start for the following conditions


Overhead tank water level comes below the "ON" level.

The underground water level above UL1 level.

Manual switch S1 should be in ON position.

The pump will automatically stop for the following conditions


Overhead tank water level touches the "OFF" level.

Underground water level comes below UL1 level.

The COM wire should be always under the water level both in the overhead and underground tank.


Pump Stops If Underground Water Level Is LOW

In the picture, you can see, the pump will stop automatically if the water level comes belowUL1 level in the underground tank.

And the pump will start automatically if the water level touches the UL1 level in the underground tank.



 Automatic Water Level Controller for Pump using 555 Timer IC

Automatic water level controller for the submersible pump and overhead tank with 555 timer IC. Also check the underground tank water level.

In this mini electronics project, I have shown how to make an automatic water level controller for the submersible pump and overhead tank with a 555 timer circuit.

This automatic water pump controller also checks the water level of the underground tank, before starting the pump.

And there is also an emergency stop switch to stop the water pump manually.


I have used a 30A relay to easily control up to 1 HP pump with this simple automatic pump controller.

I have made the complete circuit on a homemade PCB using a plastic sheet. But you can also download the Gerber file and order the PCB.


The circuit is very simple, You can easily make this project with some basic electronics components.


I have used 555 Timer IC to make this water pump controller. And here I have used a 30A relay which can be used up to 1 HP pump.


If you want to control the pump above 1 HP, then you have to select the Relay as per the Pump voltage and current rating.


Relay coil voltage: 12V DCRelay


Contact Rating: As per the Pump rating


Required Components:

555 Timer IC (1no)

BC547 NPN Transistor (2no)

1k 0.25-watt Resistors (2no)

22k 0.25-watt Resistors (3no)

180k 0.25-watt Resistor (1no)

1M 0.25-watt Resistors (2no)

LED 1.5V 5-mm (1no) 1N4007

Diode (D1) (1no) 100nF (104)

Capacitor (C1) (1no) 12V

SPDT Relay (Contact Rating 30A) (1no)

Connectors & IC base (4 pin)

Slide switch (1P2T) (1no)

Zero PCB or plastic sheet

How This Automatic Water Level Controller Works

In the above picture, the container on the left side is the overhead tank and the container on the right is the underground tank.


The pump will automatically start for the following conditions


Overhead tank water level comes below the "ON" level.

The underground water level above UL1 level.

Manual switch S1 should be in ON position.

The pump will automatically stop for the following conditions


Overhead tank water level touches the "OFF" level.

Underground water level comes below UL1 level.

The COM wire should be always under the water level both in the overhead and underground tank.


Pump Stops If Underground Water Level Is LOW

In the picture, you can see, the pump will stop automatically if the water level comes belowUL1 level in the underground tank.

And the pump will start automatically if the water level touches the UL1 level in the underground tank.


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