unsigned long previousWeldDelay = 0; // sets up the clock for the delay
long randDelay;
int ledPin1 = 10;
int ledPin2= 11;

void setup() {
  Serial.begin(9600);
  randomSeed(analogRead(0));
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
}

void welder() {
  unsigned long currentWeldDelay = millis(); // Get the current Welder time
randDelay = random(150,300); // gets the delay time for weld flash
  
  if (currentWeldDelay - previousWeldDelay >= randDelay) {  // Check if the required interval has passed
    previousWeldDelay = currentWeldDelay;  // Save the current random time for the next comparison
  
  analogWrite(ledPin1,random(255)); // turns led to random brightness
  analogWrite(ledPin2,random(255)); // turns led to random brightness
  Serial.println(randDelay);
}
}

void loop(){
  welder();
}