timer

              //determine lap time in milliseconds
              lapMillis = millis() - startMillis;
              startMillis = millis();

              lapTime = lapMillis / 1000.00;

              //if firs trigger print race started
              if (firstTrigger == true)
              {
                lcd.setCursor(0, 0);
                lcd.print("Race Started!    ");
                lcd.setCursor(0, 1);
                lcd.print("                 ");
              }

              //print if not first trigger
              if (firstTrigger != true)
              {
                Serial.print("lapTime: ");
                Serial.println(lapTime);
                Serial.print("lapMillis: ");
                Serial.println(lapMillis);
                //print lap time
                lcd.setCursor(0, 0);
                lcd.print("Last: ");
                lcd.print(lapTime);
                lcd.print("       ");
              }