What is Analog TDS Sensor with Arduino Leave a comment

An analog TDS sensor measures the stuff dissolved in water. It gives a signal showing how much solid stuff, like salts and minerals, is in the water. People use these sensors to check if the water is clean, like in gardens or for treating water. They sometimes turn the analog signal into a digital number for better studying and managing.

To use an analog TDS (Total Dissolved Solids) with an Arduino, you can follow these steps:

1. Components Needed:
   • Arduino board (e.g., Arduino Uno, Arduino Nano)
   • Analog TDS sensor module
   • Jumper wires
   • Breadboard (optional)
2. Wiring Connections:
   • Connect the VCC pin of the TDS sensor to the 5V pin on the Arduino.
   • Connect the GND pin of the TDS sensor to the GND on the Arduino.
   • Connect the analog output pin of the TDS sensor to one of the analog pins on the Arduino (e.g., A1).
3. Upload Code:
   • Use the following sample code to read data from the analog TDS sensor and display it on the serial monitor:
4. Calibration
   • Depending on your specific TDS sensor model and the TDS scale you’re interested in (measured in parts per million – ppm), you may need to calibrate the sensor to convert the raw analog readings to the desired unit of measurement. Adjust the mapping and scaling accordingly in the code.
5. Testing:
   • Open the Arduino IDE, upload the code to your Arduino, and open the serial monitor (Ctrl+Shift+M). You should see real-time TDS readings displayed in ppm.
   • This setup allows you to interface an analog TDS sensor with an Arduino and obtain TDS measurements, which can be useful for water quality monitoring and analysis, particularly in applications like hydroponics and water treatment.

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/* Company Name:LK Tronics
* Author: Research & Development Department
EXPERT GUIDANCE TO BRING YOUR DREAM PROJECT TO LIFE
* Date: 2020/ 05/ 20
* https://lk-tronics.com/
***********************************************
* All rights reserved. No part of this code may be reproduced, distributed,
* or transmitted in any form or by any means, including photocopying, recording,
* or other electronic or mechanical methods, without the prior written permission
* of LK Tronics, except in the case of brief quotations embodied in
* critical reviews and certain other noncommercial uses permitted by copyright law.

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int tdsSensorPin = A1;  // Analog pin where the TDS sensor is connected

void setup() {
  Serial.begin(9600);
}

void loop() {
  int tdsValue = analogRead(tdsSensorPin);
  
  // You may need to map the raw value to your TDS scale
  // For example, if your sensor output is 0-1023 and your TDS scale is 0-500 ppm:
  float ppm = map(tdsValue, 0, 1023, 0, 500);
  
  Serial.print("TDS Value: ");
  Serial.print(ppm);
  Serial.println(" ppm");
  
  delay(1000);
}

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Analog TDS Water Conductivity Sensor For Liquid Detection Water Quality Monitoring Module [Original]