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Internet of Things Programming with JavaScript by Ruben Oliva Ramos

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Measuring the humidity for plants

Measuring the humidity for plants

In this section, we will see the testing of humidity inside a plant and the soil using a sensor:

Measuring the humidity for plants

I will now go through the main parts of this first piece of code. Then we set up the serial communication: 

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

In the main loop, we will read the analog signal from the sensor:

void loop(){   
Serial.print("Humidity sensor value:"); 
Value = analogRead(0);   
Serial.print(value);   

We compare the value of the sensor and display the result on the serial interface:

if (Value<= 300) Serial.println(" ...

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