//define analog inputs to which we have connected our sensors
int moistureSensor = A7;

//define variables to store moisture value
int moisture_val;

void setup() {
//open serial port
Serial.begin(9600);
//set the water are turned off
pinMode (P1_4, OUTPUT);
digitalWrite (P1_4, LOW);
}

void loop() {
// read the value from the moisture-sensing probes, print it to screen, and wait a second
moisture_val = analogRead(moistureSensor);
//turn water on when soil is dry, and delay until soil is wet
if (moisture_val <600)
{
digitalWrite(P1_4, HIGH);
}
else 
{
  moisture_val = analogRead(moistureSensor);
delay(1000);
digitalWrite(P1_4, LOW);
}
Serial.print("moisture sensor reads ");
Serial.println(moisture_val);
delay(1000);
delay(1000);
}