ESP32 Water Level Monitor with Blink Integration Water Level Monitor System using ESP32, Ultrasonic Sensor, and Blynk In this project, we will create a water level monitor system that uses an ESP32 board, an ultrasonic sensor, and the Blynk platform to remotely monitor the water level in a tank. This system can be used in various applications such as home automation, industrial automation, and IoT projects. Components Required ESP32 board Ultrasonic sensor (HC-SR04) Blynk platform account Plastic jar or tank to hold water PCB for the project (optional) Circuit Diagram and Layout Design The circuit diagram and layout design of this project are provided in the description. If you want to create a PCB for this project, you can use these diagrams as a reference. Hardware Setup To set up the hardware, follow these steps: Connect the ESP32 board to the ultrasonic sensor and PCB (if using). Place the ultrasonic sensor on top of the water tank. Set up the Blynk platform by creating a template, setting up virtual pin data streams, creating a web dashboard, and creating a device using the template. Coding Part To write the code for this project, follow these steps: Copy the code from the GitHub repository. Paste the code into the Arduino IDE software. Define the Blynk ID, template name, and authentication ID at the beginning of the code. Enter your Wi-Fi network name and password in the SSID and password variables. Set up the trig pin connected to GPIO pin 33 and echo pin connected to GPIO pin 25. Define the depth of the water tank. Define the Blynk timer. Code Explanation The code measures the distance from the top of the tank using the ultrasonic sensor and stores it in a variable called "distance". It then calculates the percentage of water level using the depth of the tank and distance. If the percentage is lower than zero, it keeps it at zero. If the percentage is higher than 100, it keeps it at 100. Finally, it sends the percentage value to Blynk through a virtual pin called "v0". Uploading the Code To upload the code, select the ESP32 board from the Arduino IDE software and click on the upload button. Wait for the code to be uploaded and verified. Result After uploading the code, you should see the water level percentage displayed on the Blynk web dashboard. You can use this system to remotely monitor the water level in your tank. Note: This article is a comprehensive guide to creating a water level monitor system using ESP32, ultrasonic sensor, and Blynk. It provides detailed instructions for setting up the hardware and writing the code, as well as explanations of how the system works. Water Monitor The Water Monitor is a species of large lizard that belongs to the family Varanidae. It is native to Southeast Asia and can be found in countries such as Thailand, Cambodia, Laos, and Vietnam. The Water Monitor gets its name from its habit of living near water sources, such as rivers, lakes, and wetlands. These lizards are carnivorous and feed on a variety of prey, including fish, crustaceans, and small animals. The Water Monitor is known for its distinctive appearance, with a long, slender body that can grow up to 3 meters in length. It has a brown or grayish-brown coloration with yellow or white markings on its back and tail. The Water Monitor is considered an important species in its ecosystem, playing a vital role in controlling the population of aquatic animals. Introduction The ESP32 Water Level Monitor with Blink Integration is a comprehensive system designed to monitor water levels in tanks, reservoirs, or any other container. This innovative solution combines the versatility of the ESP32 microcontroller with the intuitive features of Blynk, a popular IoT platform. The result is a user-friendly and highly customizable monitoring system that can be accessed remotely using smartphones. Hardware Components 1. ESP32 Development Board The brain of the operation, this board is responsible for reading sensor data and sending it to Blynk servers. 2. Water Level Sensor This sensor measures the water level in the tank, sending its readings to the ESP32 board. 3. Breadboard and Jumper Wires Used for prototyping and connecting components. Software Components 1. Blynk IoT Platform Allows users to create a custom dashboard for monitoring water levels and receive notifications when thresholds are exceeded. 2. ESP32 Arduino Core A library that enables the use of Arduino code on the ESP32 board, facilitating communication with Blynk. Setup and Configuration 1. Connect the Water Level Sensor to ESP32 Board Attach the sensor to analog pins on the ESP32 board. 2. Install Blynk Library and Setup Project Create a new Blynk project, add the water level monitor widget, and set up the ESP32 board with your Wi-Fi credentials. Features and Benefits 1. Real-Time Water Level Monitoring Instantly view current water levels on your smartphone or tablet. 2. Customizable Thresholds and Notifications Set alerts for specific water level thresholds, ensuring timely intervention when needed. 3. Remote Monitoring and Control Access your water level monitor from anywhere with an internet connection. Conclusion The ESP32 Water Level Monitor with Blynk Integration is a powerful and easy-to-use solution for monitoring water levels remotely. By leveraging the capabilities of both ESP32 and Blynk, users can enjoy real-time data access, customizable notifications, and peace of mind knowing their water supplies are being monitored efficiently. Q1: What is ESP32 Water Level Monitor with Blink Integration? A system that uses an ESP32 microcontroller to monitor water levels and integrate with the Blink home security platform. Q2: How does the ESP32 Water Level Monitor work? The system uses a sensor to detect changes in water level, which triggers the ESP32 microcontroller to send notifications and updates to the Blink platform. Q3: What type of sensor is used for water level detection? A float sensor or a ultrasonic sensor can be used to detect changes in water levels, depending on the specific implementation. Q4: How does the ESP32 microcontroller send notifications to Blink? The ESP32 uses Wi-Fi connectivity to send HTTP requests to the Blink API, which then triggers notifications and updates on the user's device. Q5: Can I customize the notification settings for my water level monitor? Q6: Does the ESP32 Water Level Monitor require a constant power supply? No, the system can be designed to run on batteries, and some implementations may include features like low-power mode or wake-on-water-level-change. Q7: Can I integrate multiple water level sensors with a single ESP32 microcontroller? Q8: How accurate are the water level readings from the sensor? The accuracy of the readings depends on the specific sensor used, but most sensors provide an accuracy of ±1-5% or better. Q9: Can I access historical data and trends for my water level monitor? Q10: Is the ESP32 Water Level Monitor compatible with other smart home systems? Yes, some implementations may include compatibility with popular smart home platforms like Amazon Alexa or Google Assistant, allowing for seamless integration and voice control. Rank Pioneers/Companies Description 1 Espressif Systems Developed the ESP32 microcontroller, a low-power, low-cost chip with built-in Wi-Fi and Bluetooth capabilities. 2 Blink A home automation company that developed the Blink smart home security camera, which can integrate with ESP32-based devices. 3 Adafruit Industries A leading provider of DIY electronics and maker tools, including ESP32 boards and modules, and tutorials on water level monitoring. 4 SparkFun Electronics An online retailer of electronic components and devices, offering a range of ESP32-based products and tutorials for water level monitoring. 5 Tasmota An open-source firmware for ESP8266 and ESP32 microcontrollers, providing a platform for DIY smart home devices, including water level monitors. 6 Home Assistant An open-source home automation platform that supports integration with ESP32-based devices, including water level monitors. 7 OpenHAB An open-source home automation platform that supports integration with ESP32-based devices, including water level monitors. 8 IOT-Ready A company providing IoT solutions and products, including the ESP32 Water Level Monitor, which integrates with Blink smart home cameras. 9 MakerFocus A community-driven platform providing tutorials, projects, and resources for makers and DIY enthusiasts, including water level monitoring with ESP32. 10 Circuit Digest A website offering tutorials, projects, and articles on electronics, microcontrollers, and IoT, including ESP32-based water level monitors. Component Description Technical Details Microcontroller ESP32 WROVER Module ESP32 is a low-power, low-cost microcontroller with built-in Wi-Fi and Bluetooth capabilities. The WROVER module is a popular variant that provides a reliable and efficient way to connect devices to the internet. Water Level Sensor Ultrasonic Water Level Sensor (e.g., HC-SR04) The ultrasonic water level sensor uses high-frequency sound waves to measure the distance between the sensor and the water surface. The HC-SR04 is a popular, low-cost option that provides accurate readings up to 4 meters. Communication Protocol Blink (MQTT-based) Blink is an open-source, MQTT-based communication protocol designed for IoT devices. It allows the ESP32 module to communicate with other devices and services using a lightweight, publish-subscribe messaging pattern. Programming Language Arduino (C++) The Arduino framework provides an easy-to-use programming environment for the ESP32 module. C++ is used to write the firmware that runs on the microcontroller, handling tasks such as sensor readings and network communication. Power Supply USB or Battery (e.g., LiPo) The ESP32 module can be powered via a USB connection or using a battery. A lithium-polymer (LiPo) battery is a popular option for powering IoT devices due to its high energy density and long cycle life. Software Dependencies Blink Library, Arduino Core for ESP32 The Blink library provides the necessary functionality for MQTT communication. The Arduino Core for ESP32 is required to program and run the firmware on the microcontroller. Network Connection Wi-Fi (2.4 GHz) The ESP32 module connects to a Wi-Fi network using the 2.4 GHz frequency band, allowing it to communicate with other devices and services on the internet. Data Storage Internal Flash (e.g., 16 MB) The ESP32 module has internal flash memory for storing firmware and data. A minimum of 16 MB is recommended to ensure sufficient storage space. Note: The technical details provided are based on a general implementation of the ESP32 Water Level Monitor with Blink Integration. Specific requirements may vary depending on the actual use case and hardware components used.