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In this tutorial, we will learn how to interface Gravity Analog TDS Sensor with Arduino and design a simple TDS Meter.
TDS (Total Dissolved Solids) indicates how many milligrams of soluble solids are dissolved in one liter of water. In general, the higher the TDS value, the more soluble solids are dissolved in water, and the less clean the water is. Therefore, the TDS value can be used as one reference point for reflecting the cleanliness of the water. This can be applied to domestic water, hydroponic and other fields of water quality testing and monitoring.
So, in this project, we will interface Gravity Analog TDS Sensor with Arduino Microcontroller and read the value in 16×2 LCD Display. Since TDS Value depends upon the temperature. So will also add DS18B20 Waterproof Temperature Sensor to measure Water Temperature. The measured temperature is used with TDS Sensor to compensate for the reading with high calibration and high accuracy. The code, circuit diagram, and all other procedure are given below.
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