IoT based Water Level Monitoring & Control System using ESP32, Waterproof Ultrasonic Sensor, & Blynk

Published at : 23 Dec 2025

IoT based Water Level Monitoring & control System using ESP32, Waterproof Ultrasonic Sensor, & Blynk

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Download circuit diagram and programming: a detailed article
https://www.electroniclinic.com/iot-based-water-level-monitoring-system-using-esp32-waterproof-ultrasonic-sensor-new-blynk/


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https://youtu.be/ZWqjN_yaCVU

IoT based Water Level monitoring using ESP32, A02YYUW, and Blynk:
https://youtu.be/A2eSNBYnTao

Wireless Water Level Indicator using LoRa (1.5Km range)
https://youtu.be/14alxvGW7vI

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https://youtu.be/0AZxX3_eLQ0

IoT Water Level Sensor Using ESP8266 Nodemcu
https://youtu.be/euZkv0wJBiM

iot Water level monitoring using Ultrasonic Sensor + Nodemcu esp8266 + Blynk
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Water level monitoring using ultrasonic sensor and leds
https://youtu.be/07G1xSvs0s8


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Project Description:
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In today’s episode, you will learn how to make an IoT based Water Level monitoring and motor control system using the ESP32 WiFi + Bluetooth module, the waterproof JSN SR04T Ultrasonic Sensor just don’t worry if you see AJ-SR04M printed on the module. JSN SR04T and AJ-SR04M are exactly the same the only difference is that the AJ-SR04M has an empty location for a resistor and the JSN SR04T doesn’t have it. The amazing thing about this Ultrasonic Sensor is that, it comes with a long wire due to which it can be easily installed. Anyway, for this project we will also need an SPDT type relay to control a water pump and the new Blynk V2.0 for monitoring the water level.

Well, I have already created several videos on the water level monitoring system. But today's IoT based water level monitoring system is different from those projects, because many things have changed in the last few months. For example, Blynk V1.0, which was also known as Blynk Legacy, has now been replaced by Blynk V2.0. Additionally, this time I am using the JSN SR04T Waterproof Ultrasonic Sensor instead of the normal HC-SR04 Ultrasonic Sensor.

With the help of this project, now I can monitor the water level from any part of the world. This is fully automatic. When the water level decreases below a certain level the motor is automatically turned ON and when the water level increases to a certain level then the motor is automatically turned OFF. You can think of this Bulb as the water pump. This is a 220Vac Bulb. If you want to control a large water pump then you can use a power relay. I already have a video on the IoT power relay.

Now, let’s go ahead and take a look at the connections. So, without any further delay let’s get started!!!


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Amazon Purchase links:
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ESP32 WiFi + Bluetooth Module (My recommendation), more IO pins, improved speed, and supports a Lipo Battery:
https://amzn.to/3v40DkE

JSN SR04T Waterproof Ultrasonic Sensor
https://amzn.to/3K4OOy4

HC-SR04 Ultrasonic Sensor
https://amzn.to/3M4A8ln

1-channel relay module
https://amzn.to/3ZAbvzQ

Other must-have Tools and Components:

Arduino Uno, Nano, Mega, Micro "All types of Arduino Boards":
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Top Arduino Sensors:
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Top Oscilloscopes
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Top Soldering iron kits: "best"
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DISCLAIMER: This video and description contain affiliate links, which means that if you click on one of the product links, I will receive a small commission. This helps support the channel and allows me to continue to make videos like this. Thank you for your support!
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