added missing import.py

src/lobster.py

@@ -5,7 +5,7 @@ import numpy as np
 from qt.ui.main import Ui_MainWindow
 from PyQt5.QtWidgets import QApplication, QWidget, QGraphicsScene, QMainWindow, QSizePolicy
 from PyQt5.QtGui import QImage, QPixmap, QPainter, QPen, QFont
-from PyQt5.QtCore import QTimer, Qt
+from PyQt5.QtCore import QTimer, Qt, QEvent
 from camera import Camera
 from gpiozero import Button, LED
 import logging
@@ -30,7 +30,7 @@ class QMainWidget(QMainWindow):
         super(QMainWidget, self).__init__(parent)
         self.ui = ui_cls()
         self.ui.setupUi(self)
-        self.flash = LED(21)
+        self.flash = LED(20)
         self.led = LED(16)
         self.button = Button(17)
         self.camera = Camera("/data/")