School Project need help on programming, plz help!

Using Arduino Programming Questions
1

Hey i am making this irrigation system, that detects the moisture in the soil then sends the water if their is low amount of soil. I need help to put the values in the program of this capacitive soil moisture sensor.

Values i want to put in is dry to wet: 520-350
Dry: (520 430]
Wet: (430 350]
Water: (350 260]

This is the sketch so far:

int digitalSensor = A0;
int pumpPin = 8; //relay pin

void setup() {
pinMode(digitalSensor, INPUT);
pinMode(pumpPin, OUTPUT);
}

void loop() {
if(digitalRead(digitalSensor) == HIGH){//turn water pump on
digitalWrite(pumpPin, HIGH);
delay(30000);
digitalWrite(pumpPin, LOW);
}
delay(21600000);
}

2

Other thread removed. Carry on.

3

Read the example code on that web-page you link to..:
use if (analogRead(A0)>nn) // open waterflow. delay short time . read again.

If no need for water now ... long delay

#define dry 400  // suitable limit for water pump
#define sensor A0
int pumpPin = 8; //relay pin

void setup() 
{
 pinMode(pumpPin, OUTPUT);
}

void loop() 
{
 while(analogRead(sensor) < dry)  //turn water pump on ?  may be > ??
 {
   digitalWrite(pumpPin, HIGH); // open waterflow
   delay(500);
 } 
 digitalWrite(pumpPin, LOW); // stop waterflow
 delay(21600000); // loooong delay. can be shorter
}
4

Thanks!
How does this one looks? Will this work?

int pump=2;
void setup(){
pinMode(pump,OUTPUT);
int sensorValue = analogRead(A0);
}

void loop(){
int sensorValue = analogRead(A0);{
Serial.println(sensorValue);
if(sensorValue>350) digitalWrite(pump, HIGH);
delay(30000);
digitalWrite(pump, LOW);
}
delay(36000);
}

5 
void loop()
{
  int sensorValue = analogRead(A0);
  {
    Serial.println(sensorValue);
    if(sensorValue>350) 
      digitalWrite(pump, HIGH);
    delay(30000);
    digitalWrite(pump, LOW);
  }
  delay(36000); 
}

It looks like that.

6

GrooveFlotilla:

void loop()

{
  int sensorValue = analogRead(A0);
  {
    Serial.println(sensorValue);
    if(sensorValue>350)
      digitalWrite(pump, HIGH);
    delay(30000);
    digitalWrite(pump, LOW);
  }
  delay(36000);
}



It looks like that.

sorry what do you mean by "It looks like that."

7

I mean "it looks like this correctly posted in code tags, and it looks like this when correctly indented, and as such, it looks a bit weird because of the place you put the {} braces"

8

then sends the water if their is low amount of soil.

If the soil is missing, add water. I must have missed something.

9

I meant low water

10

differences:

You pump water for 30sec, then wait 10hrs to check again.
My code pumps water until wet enough. Then wait a while...

Both will probably be OK

11

My code pumps water until wet enough. Then wait a while...

Why wait a fixed time ?

if (soil_too_dry)
  run pump
else
  stop pump
end if