added NTP-Server fallback

Hardware.py

@@ -1,4 +1,6 @@
 import machine
+import ntptime
+import time
 import DS3231
 import Buzzer
 import StepperL298M
@@ -7,15 +9,26 @@ import LED
 import Button
 import HousingCapButton
 
+#Init i2c Bus on 17,18
+i2cBus = machine.I2C(sda = machine.Pin(17), scl=machine.Pin(18))
+
 #Initialise the time module with the RTC
 dsRtc = None
-rtc = None
+rtc = machine.RTC()
 try:
-    dsRtc = DS3231.DS3231(machine.I2C(sda = machine.Pin(17), scl=machine.Pin(18)))
-    rtc = machine.RTC()
+    dsRtc = DS3231.DS3231(i2cBus)
     rtc.init(dsRtc.DateTime()+[0])
 except Exception as e:
     print("Error on DS3231-Inititalisation\n",e)
+    print("Trying NTP-Sync")
+    for i in range(4):
+        try: 
+            ntptime.settime()
+            print("Synced with NTP")
+            break
+        except:
+            print("timesync error trying again",i)
+            time.sleep(0.5)
 
 #Init Buzzer
 buzzer = Buzzer.Buzzer(pin=2)