Index: firmware/App/Drivers/InternalADC.h
===================================================================
diff -u -rb64c49fdcf2b6d95e61e63f8e258c4e600935bbd -r8b56b0c617ac49536b8d53852b9621be873bade6
--- firmware/App/Drivers/InternalADC.h	(.../InternalADC.h)	(revision b64c49fdcf2b6d95e61e63f8e258c4e600935bbd)
+++ firmware/App/Drivers/InternalADC.h	(.../InternalADC.h)	(revision 8b56b0c617ac49536b8d53852b9621be873bade6)
@@ -1,4 +1,4 @@
-/**************************************************************************
+/**********************************************************************//**
  *
  *  Copyright (c) 2019-2020 Diality Inc. - All Rights Reserved.
  *
@@ -23,7 +23,11 @@
 
 #define INT_ADC_BITS_PER_CHANNEL        12
 #define INT_ADC_FULL_SCALE_BITS         4096
-#define INT_ADC_REF_V                   3.3
+#ifndef BREADBOARD_TARGET
+    #define INT_ADC_REF_V                   3.0
+#else
+    #define INT_ADC_REF_V                   3.3
+#endif
 
 typedef enum Int_ADC_Channels
 {