TDS Sensor Arduino, TDS in Water PPM Value, Total Dissolved Solids, Water Quality Monitoring

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Project Description:
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Declining water quality has become a global issue of concern as human populations grow, industrial and agricultural activities expand, and climate change threatens to cause major alterations to the Hydrological cycle. Every year, more people die from unsafe water than from all forms of violence, including war. Have you ever tried to find out what is the pH value and TDS value of the water you are drinking? Using a pH sensor and a TDS Sensor you can make a perfect water quality monitoring system. I have already used the pH sensor with Arduino and Nodemcu esp8266 wifi Module for measuring the water quality you can find links in the description.

In today’s episode, you will learn how to make a water quality monitoring system using the Gravity TDS Meter V1.0, DS18B20 Waterproof one-wire digital temperature sensor and 16x2 LCD with Arduino for measuring the TDS value. TDS stands for Total Dissolved Solids. The TDS value as you can see on the LCD screen indicates how many milligrams of soluble solids are dissolved in one liter of water. Many TDS meters display the TDS value in ppm which stands for parts per million. In general, the higher the TDS value, the more soluble solids are dissolved in water, and the less clean the water is. Right now the water under test is excellent as the TDS value is less than 300. The TDS value starts increasing as I start adding the salt. So, using this small DIY low-cost TDS meter you can find out if the water you are drinking is clean or not.

Along with the TDS value, you can also see the EC and temperature values which I will explain in a minute. I will also explain what TDS value is good for drinking water? I will explain all the three parameters in detail.

You can also use a TDS pen which is quite cheap and can be used for measuring the TDS value. But, if you are planning to make a hydroponic system that maintains a certain ph level then the TDS pen will never work. Because for hydroponic systems you will need an automatic system that can turn on and turn off other electrical devices. Moreover, you cannot use this TDS pen in IOT based projects.

But this TDS meter can be used in automatic Hydroponic and IOT based water quality monitoring systems.

Without any further delay let’s get started!!!


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Amazon Purchase links:
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Arduino Nano USB-C Type ( recommended):
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ESP32 WiFi + Bluetooth Module for iOT Projects (recommended), more IO pins, improved speed, and supports a Lipo Battery:
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TDS Meter V1.0 Dfrobot:
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TDS Pen:
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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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#tds #waterquality #tdsmeter