Introduction

In my previous article, I explained about working with a fire sensor and in this article, I'll show you working with a soil moisture sensor to get the accurate moisture value in the soil.
Things you will need
  • Arduino Uno
  • Bread Board
  • Soil Moisture Sensor
  • Led
Connection
  • Pin1 to the Analog
  • Pin2 to the Gnd
  • Pin3 to the 5v
Programming
  1. int pin=A0;
  2. int soilmoisture=0;
  3. int led=13;
  4. void setup()
  5. {
  6. pinMode(led,OUTPUT);
  7. Serial.begin(9600);
  8. }
  9. void loop()
  10. {
  11. int soilmoisture=analogRead(pin);
  13. if(soilmoisture>=100){
  14. digitalWrite(led,HIGH);
  15. }
  16. else{
  17. digitalWrite(led,LOW);
  18. }
  19. Serial.println(soilmoisture);
  20. Serial.print("%");
  21. delay(20);
  22. }
Explanation
Declare the variable pin to the Analog and set the minimum value to the soil moisture sensor as 0 and connect the led to the digital pin 13
Functions
Void setup()
  • Set the pinMode to led as OUTPUT
  • Set the baud Rate( 9600)
Void loop()
AnalogRead- Reads the analog value from the specific pin i.e soil moisture pin with the delay time
Condition
  1. if (soilmoisture >= 100)
  2. {
  3. //led will on
  4. }
  5. else
  6. {
  7. //led is off
  8. }
And then print the soil moisture sensor value in the serial monitor.
Advantages
  • It reduces the human effort.
  • Based upon the irrigation the water will flow through the plant.
  • We can save our water.
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