Water Level Sensor Module for Arduino AVR ARM STM32 STM8

Picture of Water Level Sensor Module for Arduino AVR ARM STM32 STM8
Congratulations to the ICStation team! They have developed this wonderful water level sensor module by great efforts.This module with small size and high cost-effective is easy to use.In this article, we will use the digital storage oscilloscope to show you how the output voltage change with the immersion depth.What’s more,we will show you an interesting actual application case.You will have a clear idea of how this module to realize the function of water level alarm.

This module is designed mainly for the DIY hobbyist and provide them a low-cost and easy-to-use water level detection scheme.The stability and durability of this module can not reach the industrial standard.But we use the high-quality PCB board to improve its stability and durability.If you just want to DIY for fun, this module will be a good choice.

Features: Simple ,Easy to use,Small size,Light, High Cost-Effective

Applicable Occasion:Water level alarm design

Working Voltage: DC5V
Working current: Less than 35mA
Type :  Analog sensor
Testing area: 40mm x 18mm
Working temperature: 10℃-30℃
Working moisture: 10%-90% without condensation
Fixing hole size: Φ3mm
Product size: 60mm x 22mm

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Step 1: Diagram

Picture of Diagram

Step 2: Function Introduction

Picture of Function Introduction

Step 3: Functional Test

Testing environment:barreled pure water

Testing procedures:
1.Connect the module to 5V power supply
2.Put the module to into the pure water
3.Observe the relation between the immersion depth and the output voltage of AO end.

Step 4: Actual testing results:①Totally out

Picture of Actual testing results:①Totally out
Output Voltage: 0V
Output Current:0mA

Step 5: ②Immerse part of the module

Picture of ②Immerse part of the module
Output Voltage: 3.22V
Output Current: 28mA

Step 6: ③Immerse full part of the module

Picture of ③Immerse full part of the module
Output Voltage: 3.42V
Output Current: 32mA

According to the three groups of data, we can make a conclusion that the actual testing results meet the requirement of application.

Step 7: Actual application case

Use this water level sensor module to control on or off about the LED which is on the arduino board.

1.arduino uno
2.Pin Header
3.Dupont Cable
RobertR141 month ago

After some experimentation, I've determined that this type of water sensor isn't useful as-is. The flat surface holds water, so the sensor really has two states: dry and "has touched water some time in the last hour". Ok for a toy or educational implementation, but would need me to take a Dremmel tool to it to be useful in actually watching for water.

Diegoprado233 months ago

Also the connection diagram or a picture with more details of the cables and pins

Diegoprado233 months ago

Hello man, do you have the sketch from this project? i would like to use it and improve it adding more stuff . Thanks!. my email is