Compare random number in if statement

Projects Programming
1

Hi,
I'm relatively new to arduino and I've run into a problem.
I have 8 LEDs wired up via a 74HC595 and I am trying to have them light up randomly one by one when numbers 0-7 are put out. However, if the number 8 is produced I want all LEDs to switch off. So far, switching them on works just fine but they do not switch off if 8 is put out. I guess it has something to do with the if statement and what it accepts but I have no idea how to fix it.

int latchPin = 11;
int clockPin = 9;
int dataPin = 12;
long led;

byte leds = 0;

void updateShiftRegister()
{
   digitalWrite(latchPin, LOW);
   shiftOut(dataPin, clockPin, LSBFIRST, leds);
   digitalWrite(latchPin, HIGH);
}
void setup() 
{
  pinMode(latchPin, OUTPUT);
  pinMode(dataPin, OUTPUT);  
  pinMode(clockPin, OUTPUT);
  updateShiftRegister();
  Serial.begin(9600);
  while (! Serial); 
  Serial.println("Enter LED Number 0 to 7 or '8' to clear");
  randomSeed (analogRead(0));
 
}

void loop() 
{ led = random(0,9);
    if (led == '8')
    {
      leds = 0;
      updateShiftRegister();
      Serial.println("All LEDs turned off");
    }
    else
    { bitSet(leds, led);
      updateShiftRegister();
      Serial.print("Turned on LED ");
      Serial.println(led);
    }
    delay (2000);
  }
2 
   if (led == 8)
3

Wow. ok. Thank you. Works like a charm.
Like I said, I'm quite new to coding :slight_smile:

Thanks again

4

'8' is the ASCII character for the digit eight.
8 is the value eight.