gistfile1.ino

// lightUp takes a byte
void lightUp(byte seq){

    // Loop through each of the 8 bits
    for(int i=0;i<8;i++){
    
        // If the current bit is a 1...
        if(bitRead(seq, i)){ 
            // turn on that LED by sending HIGH.
            // The 5 below is the starting pin used on the
            // Arduino.
            digitalWrite(i+5, HIGH);
        }
        // If the current bit is set to 0...
        else{
             // Send the LED a LOW to turn it off.
             digitalWrite(i+5, LOW); 
        }
    
    }


}