What is my code missing?

[big_ralfie]

//My project is a temperature-based, variable-speed fan with two LEDs, controlled by an Arduino Uno. We were given partial code, and now we must declare an integer, which I did, and now I need to light up the diodes. Fan on is the green LED, fan off is the blue LED. I have to make them light up respectively, but I must be missing those lines of code. A little help please?

// C++ code
//
//Pin Variables
int tempPin = 1;
int tempVal = 0;
int enable = 6;
int dirA = 5;
int dirB = 3;
int motorSpeed = 128;
int fanOnLED = 13;
int fanOffLED = 11;

void setup() {
    pinMode(enable, OUTPUT);
    pinMode(dirA, OUTPUT);
    pinMode(dirB, OUTPUT);

    digitalWrite(enable, LOW);
    digitalWrite(dirA, LOW);
    digitalWrite(dirB, LOW);
	
    digitalWrite(fanOnLED, LOW);
    digitalWrite(fanOffLED, LOW);
    
    Serial.begin(9600);
    delay(500);
}

void loop() {
    // Read the value of the temperature sensor
    tempVal = analogRead(tempPin);
    // Calculate the sensor reading into millivolts
    float mV = (5000.0 * tempVal)/1024;
    // Calculate the temperature in Centigrade
    float tempC = (mV - 500)/10;
    // Print the temperature to the serial monitor
    Serial.print("Temperature in C: ");
    Serial.print(tempC);
    Serial.println();
    delay(100);
    // If the temperature goes above 25 degrees C, start the fan
    if (tempC > 25.0) {
    spinMotor(motorSpeed);
    }
    // If the temperature drops below 25 degrees C, stop the fan
    else {
    spinMotor(0);
    }
}
void spinMotor(int motorSpeed) {
    // Set motors to maximum speed
    // For PWM maximum possible values are 0 to 255
    // Spin the motor forward
    analogWrite(enable,abs(motorSpeed));
    digitalWrite(dirA, HIGH);
    digitalWrite(dirB, LOW);
}

// Can someone help?

[gilshultz]

This sounds like a course project, is it? What grade level?

[xfpd]

@big_ralfie

make them light up respectively

Do you mean "if fan on, green on and blue off" and "if fan off, green off and blue on?"

@big_ralfie

    // If the temperature goes above 25 degrees C, start the fan
    if (tempC > 25.0) {
      digitalWrite(fanOnLED, HIGH); // green on
      digitalWrite(fanOffLED, LOW); // blue off
      spinMotor(motorSpeed);
    }
    // If the temperature drops below 25 degrees C, stop the fan
    else {
      digitalWrite(fanOnLED, LOW); // green off
      digitalWrite(fanOffLED, HIGH); // blue on
      spinMotor(0);
    }

[JCA34F]

@big_ralfie

void setup() {
    pinMode(enable, OUTPUT);
    pinMode(dirA, OUTPUT);
    pinMode(dirB, OUTPUT);

Don't forget to pinMode the LED pins to OUTPUT in setup();

void setup() {
    pinMode(enable, OUTPUT);
    pinMode(dirA, OUTPUT);
    pinMode(dirB, OUTPUT);
    pinMode(fanOnLED, OUTPUT);
    pinMode(fanOffLED, OUTPUT);
    

[big_ralfie]

Internet of Things - Connecting Things, at Cuyamaca College. I'm doing it on TinkerCAD.