on video How to make Wireless Water Level Indicator with Alarm

 Wireless Water-Tank Level Meter with Alarm

This circuit measure the water level of a tank and wirelessly send it to a receiver where it is displayed using a LCD display and LEDs.

Motivation

I always wanted to have a meter which displays the water level of my 1000l water tank in my home. The meters in amazon cost about 70$ and their wireless sensors range is too short. So I build this. This only cost me about 15$ and it was a fun project. 

Functionality

This meter sense the water level using an ultrasonic sensor placed under the lid of the tank and sends the data via a wireless transmitter to the receiver unit. 

The LCD in the receiver unit displays the water level as a long bar. 

The water percentage is calculated and displays in the LCD 

A short message like "Low", "Normal", "Full" or "Overflowing",  is shown in the display 

The receiver contains 3 LEDs. Green, yellow and red which corresponds to the water level 

The receiver also has a buzzer which buzzes when the water level is too low or when the tank is full, when refilling. 

Receiver contains 2 buttons. The first button turns the back-light of the LCD. Second button mutes the buzzer. 

The back-light of the LCD will turn on once the button is pressed and will turn off after 30 seconds. 

When the water level is below 15% alarm buzzes, if it was muted it restarts again when the water level is below 10%, and 5% 

You can build this by following this procedure. 

Procedure:

Step 1: Gathering things

First gather all the parts listed above. Other than these items find some small plastic boxes to house the circuits. if you have a 3D printer you can print a case. I used a HC-12 wireless module for this project which has a 1000m range. If you want you could use a NRF24L01 module. But you might have to change to code. 

Then build the receiver. Carefully follow the pins and connect them to the Arduino. First you should build the circuit in a breadboard and later move to a circuit board. I used a prototyping board for the LEDs and the buttons. 

Step 4: Code

Code for both receiver and transmitter are included. To calibrate the sensor edit the MinLevel and MaxLevel in the transmitter code. Use serial communication to get the 2 values. 

Go through the code and edit it if needed. You might encounter some software errors while building the project, try to fix them and move on. Remember, "Never Give Up". So, with smart work and dedication, you can do anything! 

 Wireless Water-Tank Level Meter with Alarm

This circuit measure the water level of a tank and wirelessly send it to a receiver where it is displayed using a LCD display and LEDs.

Motivation

I always wanted to have a meter which displays the water level of my 1000l water tank in my home. The meters in amazon cost about 70$ and their wireless sensors range is too short. So I build this. This only cost me about 15$ and it was a fun project. 

Functionality

This meter sense the water level using an ultrasonic sensor placed under the lid of the tank and sends the data via a wireless transmitter to the receiver unit. 

The LCD in the receiver unit displays the water level as a long bar. 

The water percentage is calculated and displays in the LCD 

A short message like "Low", "Normal", "Full" or "Overflowing",  is shown in the display 

The receiver contains 3 LEDs. Green, yellow and red which corresponds to the water level 

The receiver also has a buzzer which buzzes when the water level is too low or when the tank is full, when refilling. 

Receiver contains 2 buttons. The first button turns the back-light of the LCD. Second button mutes the buzzer. 

The back-light of the LCD will turn on once the button is pressed and will turn off after 30 seconds. 

When the water level is below 15% alarm buzzes, if it was muted it restarts again when the water level is below 10%, and 5% 

You can build this by following this procedure. 

Procedure:

Step 1: Gathering things

First gather all the parts listed above. Other than these items find some small plastic boxes to house the circuits. if you have a 3D printer you can print a case. I used a HC-12 wireless module for this project which has a 1000m range. If you want you could use a NRF24L01 module. But you might have to change to code. 

Then build the receiver. Carefully follow the pins and connect them to the Arduino. First you should build the circuit in a breadboard and later move to a circuit board. I used a prototyping board for the LEDs and the buttons. 

Step 4: Code

Code for both receiver and transmitter are included. To calibrate the sensor edit the MinLevel and MaxLevel in the transmitter code. Use serial communication to get the 2 values. 

Go through the code and edit it if needed. You might encounter some software errors while building the project, try to fix them and move on. Remember, "Never Give Up". So, with smart work and dedication, you can do anything!