Water level monitoring is crucial for various applications, from managing water resources to preventing overflow or shortages. In this article, we will explore how to build a smart water level monitoring system using an ESP32 microcontroller, Blynk IoT platform, and an ultrasonic sensor.
Contents
Introduction
Monitoring the water level in real-time can provide valuable insights and help prevent potential risks. With the IoT-based water level monitoring system, you can remotely monitor the water level from anywhere in the world using the Blynk IoT app. Additionally, the system will send you notifications when the water level drops below a certain percentage, ensuring timely action.
Components Needed
To build this project, you will need the following components:
- ESP32 microcontroller
- Waterproof ultrasonic sensor (or any other compatible ultrasonic sensor)
- OLED display
- Buzzer
- Zero PCB (optional)
- AC to DC converter (optional, if using AC supply)
- USB cable for programming
Circuit Design
The circuit design for this water level monitoring system is relatively simple. You can use a breadboard for testing purposes or design a PCB using software like LTM PCB Designer. It is recommended to use a waterproof ultrasonic sensor for accurate readings, especially when placed inside a water tank.
Programming the ESP32
Before programming the ESP32, you need to configure the Blynk Cloud. Create a template, set up data streams for water level and distance, and create a web dashboard with relevant visualization components. Add a device using the template and obtain the authentication token. You can refer to the official Blynk documentation for detailed instructions.
Once the Blynk Cloud is configured, upload the source code to the ESP32. Install the ESP32 board and required libraries, and enter your template ID, device name, authentication token, Wi-Fi credentials, and tank-specific values like empty tank distance, full tank distance, and triggered percentage. The empty and full tank distances represent the distance between the sensor and the bottom of the tank and the water level, respectively.
After uploading the code, the ESP32 will establish a Wi-Fi connection, and you can monitor the water level through the Blynk app and the OLED display.
FAQs
Can I use a different type of ultrasonic sensor?
Yes, you can use a different ultrasonic sensor as long as it is compatible with the ESP32 and provides accurate distance measurements. However, if you choose a sensor other than the waterproof ultrasonic sensor mentioned, make sure to consider the sensor’s range and adjust the code accordingly.
How can I power the circuit?
If you prefer to use AC supply, you will need an AC to DC converter. Otherwise, you can directly provide a 5V DC supply to the circuit.
Is it possible to receive notifications on email?
Yes, by configuring the Blynk automation, you can choose to receive notifications via email in addition to in-app notifications.
Conclusion
Building an IoT-based water level monitoring system allows you to remotely monitor the water level and receive notifications when it drops below a certain threshold. Through the combination of ESP32, Blynk, and an ultrasonic sensor, you can ensure efficient water management and prevent potential issues. For more exciting technology articles and projects, visit Techal.
