So, there is an overflow of water in the tank, which results wastage of energy and water. This caused the voltage to drop below the threshold for logic level HIGH for the digital pin and it would always read logic level LOW (0). Project tutorial by Robodia Technology Solutions. I considered alternate methodologies for detecting water level, but they had practical issues and hence I had to go with the carbon probe with voltage detection. Finally, we will install the device into the tank. However, the Node MCU board has one Analog pin and this would limit the number of input probes and the detected water levels to just one. I looked at a few products available on Amazon that detect water level and turn off the motor/pump (there are different variants that work with single phase motors and 3 phase motors). I mainly work with printed circuit boards on proteus to bring life to my inventions. The Node MCU (and ESP8266) has an onboard 10-bit Analog to Digital Converter (ADC). Yet another very useful utility for day to day life. Firmly fix the rod inside the tank and make sure that the rod (PVC pipe) touches the bottom of the tank. I am an Electrical Engineer who has a very innovative approach towards daily life stuff. #define MAX_DISTANCE 500 // Maximum distance we want to ping for (in centimeters). When we start the water pump water starts to get pumped from the underground water reservoir to the overhead tank. Gap between Ultrasonic and Max water level adjusted in Arduino code. 
Save electricity and easy installation and 12 months warranty +package contains:1 water level controller unit, 6 pic sensors probes (For upper and down tank), 1 user manual with all technical details, It can use with suitable up to 2hp motor and suitable for single phase mcb starter panel, submersible motors and jet pumps, It can use with overhead tank and under ground tanks or overhead tank only, Dry run protection. How To Detect Rainfall Using Rain Sensor? Awesome project. Right, so the usage of carbon based electrodes instead of the generally available steel electrodes was to avoid rusting. This would be too low for the digital pin to give a logic level HIGH and that explains the failure of the older design in Trivandrum. My colleague had WiFi connectivity in his upper floor and the WiFi signal strength on the terrace was at acceptable levels. Valve to Reduce Steam Deck Supply Chain Issues, Intel Arc A770M Tested in 3DMark Time Spy, Performance Equal to the RTX 3070M, Apple Claims That Supply Issues Are Severely Hurting Mac Sales, AMDs Upcoming Zen 4 Based 7600X Tested, Crushes the i9-12900K, AMDs Rembrandt Based APU Tested, Features the Zen3+ Architecture. The HC-SR04 ultrasonic module is a module that can provide non-contact measurement within the range of 2cm to 400cm with ranging accuracy that can reach 3mm. Project tutorial by Pranav Kundaikar and Vinayak Shantaram Joshi. Water level monitoring system is one of the techniques to address the control of water wastage. All the householders are storing the water in overhead tanks by using the motor pumps. The components used in this project are easily available in the market. These days everyone has an overhead tank at their homes. How To Detect Water Level In The Overhead Tank Installed On Roof? Interface for Serial Communication, 5pcs 3V~5V IIC I2C Logic Level Converter Module Bi-Directional Sensor Module for Arduino with Pins, 15 Ir Infrared Obstacle Avoidance Sensor, E18, D80Nk, PiBOX India Raspberry Pi 4 Heatsink, 3 Pieces Raspberry Pi Aluminum Heatsinks with Thermal Conductive Adhesive Tape for Raspberry Pi 4B Model B 3 Pieces, Embedded Kart TCS230 TCS3200 Color Recognition Sensor Detector Module for MCU Arduino. There is a current limiting resistor involved between transistor and LED and it prevents higher voltage to destroy the LED. Take a PCB board and solder the LEDs on it according to the levels defined above. This could be done via a self hosted MQTT server or using a cloud service like AWS IoT core. 
percentage=(ActualReading/WaterLevelMAX*100); else if(percentage>20 && percentage<=100), if(percentage>20 && percentage<=100 && flag ==1), else if(percentage>20 && percentage<=100 && flag ==0), https://drive.google.com/file/d/11egiPu2fzW4Sn2ypX6yYpG9r5-iuY-TP/view?usp=sharing, https://drive.google.com/file/d/1_5t3tVkQNHQk60k0gRRFQR1lUCjvaC1z/view?usp=sharing. View the water integrity and level of selected areas on your Android phone by using an HC-06 Bluetooth module to make an irrigation system. Firstly, measure the height of the tank and then with equal intervals mark 4 points on it. The analog pin read gave values between 265 to 300 indicating an input probe voltage of ~1V. A single page application built with Google Charts helps users visualise the water level. All the commercial products available on Amazon use a similar approach to detect water level. Another problem Ive observed is with the diaphragm getting water vapour settled on it causing accuracy problems. I decided to build a microcontroller based solution that detects and transmits the water level to a cloud hosted database. (A high resistance between GND and D4 grounds residual voltage without grounding the signal from P2). When the water pump is started and the water level starts to rise, what actually happens is that every sensor gets activated one by one and finally, when the water level reaches the topmost sensor a buzzer is activated from the unit indicating that the tank is full and one needs to turn off the water pump hence, saving the electricity bill and as well as flow of water from the tank. Adding salt to the water resolved the problem. LEDs will be monitoring the water level in the tank and the functionality of each LED is explained below : Presently, as the water ascends the sensors begin to get in contact with the water and the transistors are activated and there is a progression of current in the transistors making the LEDs light up. #define MAX_DISTANCE 500 // Maximum sensor distance is rated at 400-500cm. This is a low cost board that comes with WiFi networking. I tend to make life easier by making circuits and designs to automate things around me. This project monitors the water level and emails alerts. If Water level below 20% then Pump will start Running and. Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy. Sump Water level sensor, which are dipped in to the Sump Water Tank or Use non-contact sensor for Pump suction line, And Analog pin present on the Arduino Nano will be used to sense the presence of water. Tank water level monitored in Android Mobile using app. This can further used if you wish to replace the water tank with a new one. To view or add a comment, sign in, Great write up Kishor, by the way great solve too.hope you can turn this to a commercial product, Awesome, man. // put your main code here, to run repeatedly: Water Quality Monitoring and Notification System, Christmas Tree Water Level via Cayenne and MKR1000. Make holes on those points and then make a loop of wire which will be carrying the current. We possibly need to make two channels so when they are in contact with water they will go about as a switch, as water is a good conductor of electricity. This was a bit puzzling at first and after ruling out possibilities like soldering issues etc he was able to get to the root cause of the issue. Then cut the plastic board for the Power Switch. This design works on the premise that the home WiFi signal is accessible on the terrace near the water tank and mains power supply is available to power the Node MCU board. Corrosion less sensors. Maximum sensor distance is rated at 400-500cm. Unlike the digital pin read which gives a login level HIGH or LOW based on a threshold, the analog pin provides a scaled value. At this point, we had two options. I decided to give this a shot and see if I can come up with a solution. Stick the buzzer behind the PCB board and also fix the power supply by taking care of the transformer. The Node MCU board can also be stripped down further and could be powered by a battery, but we did not venture in that direction as power supply was available on the terrace. You are quite an inspiration, Great Kishor. Manual mode: (motor pump will be constantly On). When the P2 probe was dropped into the mug with water, the green LED lit up validating this design. Secondly, the controller is not programmable and handles the one task of turning off the motor. Since we know that the speed of sound is around 340m/s then we can calculate the distance using; To determine the level of the water in the tank we must know the total length of the tank. Among all the components the most important components are Transistors BC 547. I choose ESP8266 based Node MCU microcontroller board. Level Monitoring and Control with dry Pump run protection using Ultrasonic Sensor and Android Applcation via bluetooth HC-05. We decided to build a solution that does not require wires between the probes and the controller. My colleague stays in an independent house and has a water tank on the terrace. Now, that weve collected all the components lets assemble them and design the circuit. http://xtel.in/water-level-monitor-using-sr04-and-labview.html. On getting to the surface of the water, the wave is echoed back to the sensor and the arduino reads the echo pin to determine time spent between triggering and receiving of the echo. The water in Trivandrum had less impurities and hence had a higher resistance. One of the major problems faced by most of the countries is the issue of water scarcity in the world. The arduino provides a high signal of 10microseconds to this pin. Keep rocking. The idea is to connect two probes to two digital pins of the Arduino, one set to output mode and the other to input mode. #define MOTORPIN 8 // Arduino pin tied to Relaypin of the Relay Circuit, #define BUZZER 9 // Arduino pin tied to +ve terminal of the Buzzer, float TankHeight, WaterLevelMAX, GapbwSonar, SonarReading, ActualReading, Temp. This meant that the Mk1 design is not suitable for use in certain parts of the world and we had to go back to a new design. NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE); float TankHeight, WaterLevelMAX, GapbwSonar, SonarReading, ActualReading, Temp; lcd.begin(20, 4); // set up the LCD's number of columns and rows: pinMode(MOTORPIN, OUTPUT);// Relay pin as output pin, digitalWrite(MOTORPIN, LOW); //Turn off the relay, pinMode(BUZZER, OUTPUT);// Buzzer pin as output pin, digitalWrite(BUZZER, LOW); //Turn off the Buzzer, WaterLevelMAX=0.9*TankHeight; // 10CM GAP BETWEEN MAX WATER LEVEL TO SONAR FIX. If the input probe is connected to the A0 pin, we would get the voltage as an integer between 0 and 1023. During testing, the digital input pins always read logic level LOW (0) even when the probes were immersed in water. The Atmega 328p or similar micro controllers do not have built in WiFi, so, we decided to stick with the Node MCU and add a Multiplexer/Demultiplexer. Additional software changes to the AWS Lambda function to perform decision making (to turn on/off the motor) and propagate the on/off commands to the switch that controls the motor. The hole of the bare wire and bolt should be kept a minimum and in the event that you need, you can solder a little bit of wire to the common line just next to the nut and screw as the sensing would be more at the point when the water interacts with the normal wire and the bolt, there will be transfer of current from the stripped wire to the bolt and hence, the sensing part is complete. Used advanced embedded technology, 7.29921259098 7.29921259098 5.09842519165 in. Water level detection (or liquid level detection) is not a new problem and there are a number of commercial off-the-shelf products available in the market. If Water level above 100% then Pump will stopped. It works on the principle of echolocation. LCD 20x4 line display. Digital pin D1 is set to output mode while pins D2, D5, D6, D7, D8 are set to input mode. This means, the input probes can be connected to the multiplexer channels and the Node MCU can read from them one after the other by altering the state of the multiplexer (think of it as three taps connected to the same pipe and we get to choose the one pipe that is open at any time). In such cases, the design has to be changed and alternate transmit/receive modules that provide wireless connectivity in 2.4Ghz band or the ISM band have to be used. . In view of this, Bluetooth module based Water Level Monitoring system is an innovative idea that will inform the users about the level of liquid and will prevent it from overflowing. However, this setup requires running electric wires from the controller located in the ground floor to the probes hanging in the water tank on the terrace. A decent and very cheap office entrance door alarm system to keep track of every person's entry or departure. In the tank, there is a set of sensors and they act like a switch. Fully automatic function (manual on and auto off function). We have to see how long the carbon electrodes work in real world scenario. The second resistor (R2 - 22,000 ohms) acts as a pull down resistor and prevents input pin D4 from floating. This idea can be extended further to replenish the sump if we add water level sensors to the sump as well. We can use a PVC pipe and make holes in it. A few months back I had a discussion with a colleague about the need for a water level sensor for his house. The data in the cloud can then be used to control a programmable switch to turn on/off the motor. I tested this prototype with packaged drinking water and the results were as expected. #define ECHO_PIN 7 // Arduino pin tied to echo pin on the ultrasonic sensor. if Pump stopped and Sump tank empty then Pump will stopped. A current limiting resistor (R1 - 440 ohms) is connected in series with the output pin D7 and probe P1 to limit the total current to ~11 milli amps (or lower). We have successfully installed the device and it is indicating the water level in the tank. Water is pumped into the overhead tank from a ground level water sump using an electric motor. We can observe that LEDs are glowing and the topmost blue LED will glow when the tank is filled thus, turning ON the buzzer. Pure water is a bad conductor of electricity and impurities in water improve conductivity. After the HC-SR04 is triggered, it sends out eight 40Khz sound waves to the surface of the water. The scarcity is mainly due to the wastage of the water. It observes the level of water and provides the information to the registered users through wireless. I am Hamza. Presently for the establishment of the gadget, we should locate a reasonable spot for a clear view of LED lights. I built a AWS Lambda Function that writes the water level received over a HTTP API call to a DynamoDB table. If P4 is hung close to the top of the tank, the motor can be turned off once non-zero voltage is detected at P4. As P2 and P3 are immersed in water, we should get a non-zero voltage reading at P2 and P3, and zero voltage at P4. In this example configuration, electricity is passed into water through probe P1 and voltage is measured at probes P2, P3 and P4. This is probably one of the challenges every one of us faced at some point. Once enough water is pumped up, the motor has to be switched off manually. We will screw the two L hooks to the device and fix it into the wall and afterward take A/C 220V from any socket and give it to the board. #define TRIGGER_PIN 6 // Arduino pin tied to trigger pin on the ultrasonic sensor. Manual/auto/off modes. We could go with a micro controller like Atmega 328p (used on the Arduino board) that has multi-channel ADC (and hence multiple Analog pins) or use a multiplexer/demultiplexer with the Node MCU board. Easy to install. When you have a 'real' Christmas tree, it is important to keep it watered. But it is a slightly better than electrodes corroding under water. #include
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