Water Level Indicator Using IC 2003

 Water Level Indicator Using IC 2003

Water tank level gauges are used to quickly tell how much water is in your storage tank at any given time. Rain Harvesting Supplies sells two types of level gauges: electronic indicators and mechanical indicators.

Electronic Indicators

Water tank level gauges with electronic indicators are a convenient way to keep an eye on your water levels from inside your own home or office.

Electronic level gauges consist of a simple circuit. The electronic indicator inside the tank transmits signal to a bar of LEDs located on the electric board.

Level gauges with electronic indicators eliminate the need for you to go to the actual physical location of the tank to read the water level.

Water overflow from the overhead tank is an issue for everyone and in every household. It, along with wastage of electricity also causes lots of water wastage and with new laws being passed water wastage even on tank overflow could be penalised.

Thus here I am presenting an easy and simple DIY project for all enthusiasts and students that will have an environmental impact as well.

To keep it with zero noise pollution project I have not included a buzzer in this.

It requires easily available and cheap components.

ULN2003 IC

330 Ohm Resistors (0.4W) - 7

LEDs - RED, Green, Yellow/blue

Wires - sufficient length from the water tank to the suitable position of the level monitor (7 wires)

Few things to know about ULN2003A IC

The ULN2003A is an array of seven NPN Darlington transistors capable of 500 mA, 50 V output.

It features common-cathode flyback diodes for switching inductive loads.

The seven Darlington pairs in ULN2003 can operate independently except the common cathode diodes that connect to their respective collectors.

The ULN2003 is known for its high-current, high-voltage capacity. The drivers can be paralleled for even higher current output.

Main specifications:

500 mA rated collector current (single output)

50V output

Includes output flyback diodes

Inputs compatible with TTL and 5-V CMOS logic

Water Level Circuit

It works on the same principle as the NPN transistors work but in a more compact design outline. The ULN2003A is 7 NPN transistors in one Now we have got the PCB design and it’s time to order the PCB’s. For that, you just have to go to JLCPCB.com, and click on “QUOTE NOW” button.

JLCPCB are also sponsor of this project. JLCPCB (Shenzhen JLC Electronics Co., Ltd.), is the largest PCB prototype enterprise in China and a high-tech manufacturer specializing in quick PCB prototype and small-batch PCB production. You can order a minimum of 5 PCBs for just $2. To get the PCB manufactured, upload the gerber file you downloaded in the last step. Upload the .zip file or you can also drag and drop the gerber files. After uploading the zip file, you’ll see a success message at the bottom if the file is successfully uploaded. You can review the PCB in the Gerber viewer to make sure everything is good. You can view both top and bottom of the PCB. After making sure the PCB looks good, you can now place the order at a reasonable price. You can order 5 PCBs for just $2 plus shipping. To place the order, click on “SAVE TO CART” button. My PCBs took 2 days to get manufactured and arrived within 20 days using registered standard post delivery option. There are fast delivery options also available.PCBs were well packed and the quality was really good.package.

The R8 resistor is optional based on the input current, in testing a lipo battery (4.2V) does not require the resistor for the circuit to work safely.

Also the jumper is optional, it will act a on/off switch if required.

The wire connected to the tank terminal is placed at the bottom of the tank. Then all the other wires from 0 to overflow are placed at their respective levels in the tank preferably attached to a non-conductive pole of sorts that can be placed in the water.

As the water level of the upper tank rises the LEDs starts to light up in sequence like a bar graph.

After assembling everything and connecting the wires, it looks as shown in the images.

NOTE: There will be salt deposits on the open wire ends in the tank if the water in your locality is hard water, then you need to clean the salt deposits on a regular basis.

 Water Level Indicator Using IC 2003

Water tank level gauges are used to quickly tell how much water is in your storage tank at any given time. Rain Harvesting Supplies sells two types of level gauges: electronic indicators and mechanical indicators.

Electronic Indicators

Water tank level gauges with electronic indicators are a convenient way to keep an eye on your water levels from inside your own home or office.

Electronic level gauges consist of a simple circuit. The electronic indicator inside the tank transmits signal to a bar of LEDs located on the electric board.

Level gauges with electronic indicators eliminate the need for you to go to the actual physical location of the tank to read the water level.

Water overflow from the overhead tank is an issue for everyone and in every household. It, along with wastage of electricity also causes lots of water wastage and with new laws being passed water wastage even on tank overflow could be penalised.

Thus here I am presenting an easy and simple DIY project for all enthusiasts and students that will have an environmental impact as well.

To keep it with zero noise pollution project I have not included a buzzer in this.

It requires easily available and cheap components.

ULN2003 IC

330 Ohm Resistors (0.4W) - 7

LEDs - RED, Green, Yellow/blue

Wires - sufficient length from the water tank to the suitable position of the level monitor (7 wires)

Few things to know about ULN2003A IC

The ULN2003A is an array of seven NPN Darlington transistors capable of 500 mA, 50 V output.

It features common-cathode flyback diodes for switching inductive loads.

The seven Darlington pairs in ULN2003 can operate independently except the common cathode diodes that connect to their respective collectors.

The ULN2003 is known for its high-current, high-voltage capacity. The drivers can be paralleled for even higher current output.

Main specifications:

500 mA rated collector current (single output)

50V output

Includes output flyback diodes

Inputs compatible with TTL and 5-V CMOS logic

Water Level Circuit

It works on the same principle as the NPN transistors work but in a more compact design outline. The ULN2003A is 7 NPN transistors in one Now we have got the PCB design and it’s time to order the PCB’s. For that, you just have to go to JLCPCB.com, and click on “QUOTE NOW” button.

JLCPCB are also sponsor of this project. JLCPCB (Shenzhen JLC Electronics Co., Ltd.), is the largest PCB prototype enterprise in China and a high-tech manufacturer specializing in quick PCB prototype and small-batch PCB production. You can order a minimum of 5 PCBs for just $2. To get the PCB manufactured, upload the gerber file you downloaded in the last step. Upload the .zip file or you can also drag and drop the gerber files. After uploading the zip file, you’ll see a success message at the bottom if the file is successfully uploaded. You can review the PCB in the Gerber viewer to make sure everything is good. You can view both top and bottom of the PCB. After making sure the PCB looks good, you can now place the order at a reasonable price. You can order 5 PCBs for just $2 plus shipping. To place the order, click on “SAVE TO CART” button. My PCBs took 2 days to get manufactured and arrived within 20 days using registered standard post delivery option. There are fast delivery options also available.PCBs were well packed and the quality was really good.package.

The R8 resistor is optional based on the input current, in testing a lipo battery (4.2V) does not require the resistor for the circuit to work safely.

Also the jumper is optional, it will act a on/off switch if required.

The wire connected to the tank terminal is placed at the bottom of the tank. Then all the other wires from 0 to overflow are placed at their respective levels in the tank preferably attached to a non-conductive pole of sorts that can be placed in the water.

As the water level of the upper tank rises the LEDs starts to light up in sequence like a bar graph.

After assembling everything and connecting the wires, it looks as shown in the images.

NOTE: There will be salt deposits on the open wire ends in the tank if the water in your locality is hard water, then you need to clean the salt deposits on a regular basis.