Fix switch bank callback and temperature/humidity data

boatdata.py

@@ -1,4 +1,4 @@
-'''
+"""
 !!! Dies ist noch im Ideen-Stadium 
 WIP TBD
 
@@ -75,7 +75,7 @@ xdrRoll
 xdrPitch
 xdrYaw
 
-'''
+"""
 
 import datetime
 import time
@@ -379,7 +379,11 @@ class SwitchBank():
     def setCallback(self, index, cb_function):
         if index < 1 or index > 28:
             raise IndexError("Switch index out of range")
-        self.callback[index] = cb_function
+        self.callback[index-1] = cb_function
+
+    def __str__(self):
+        out = f"Switch bank instance #{self.instance}"
+        return out
 
 class Tank():
     """