Soil moisture meter.

Projects Programming
1

So im quit new to arduino and i only have worked with basic projects earlier. So im going off on vacation and im having a friend look after my plants and i thought it would be nice having a moisture detector. i've got everything hooked up but the code isn't quite working so id wonder if someone could help me fix the code.
i want the LED to constantly light up when i certain value is reached but also change LED depending on the different values that the moisture detector output.

I would sincerely appreciate if someone could help me with this project.

const int VAL_PROBE = 0; // Analog pin 0
const int MOISTURE_LEVEL = 0; // the value after the LED goes ON

void setup() {
    Serial.begin(9600);
}
void Dry(int state) {
    digitalWrite(11, state);
}
void Humid(int state) {
    digitalWrite(13, state);
}
void Water(int state) {
    digitalWrite(12, state);
}
void Air(int state) {
    digitalWrite(11, state);
    digitalWrite(12, state);
    digitalWrite(13, state);
}


void loop() {
    int moisture = analogRead(VAL_PROBE);
 
    Serial.println(moisture);
 
    if(moisture > 800) {
        Dry(HIGH);
    } else   {
        Dry(LOW);
    }

    delay(1000);
}

void loop2() {
int moisture = analogRead(VAL_PROBE);
 
    Serial.println(moisture);
 
    if(moisture > 300) {
        Humid(HIGH);
    } else   {
        Humid(LOW);
    }

    delay(1000);
}

void loop3() {
int moisture = analogRead(VAL_PROBE);
 
    Serial.println(moisture);
 
    if(moisture > 50) {
        Water(HIGH);
    } else   {
        Water(LOW);
    }

    delay(1000);
}
void loop4() {
int moisture = analogRead(VAL_PROBE);
 
    Serial.println(moisture);
 
    if(moisture > 1000) {
        Air(HIGH);
    } else   {
        Air(LOW);
    }

    delay(1000);
}
2

loop2(), loop3(), loop4() makes no sense. only loop() is automatically call.

take all of the loops code and put inside loop().

3

Thanks it worked like a charm now :slight_smile: