Index: firmware/App/DDCommon.h
===================================================================
diff -u -r801f2d7f653fbe2185aade246290bb633eae6391 -rba7e088fc3308f844ea30376a78e1da6d32621c1
--- firmware/App/DDCommon.h	(.../DDCommon.h)	(revision 801f2d7f653fbe2185aade246290bb633eae6391)
+++ firmware/App/DDCommon.h	(.../DDCommon.h)	(revision ba7e088fc3308f844ea30376a78e1da6d32621c1)
@@ -8,7 +8,7 @@
 * @file    DDCommon.h
 *
 * @author  (last)      Vinayakam Mani
-* @date    (last)      14-Nov-2025
+* @date    (last)      14-Apr-2026
 *
 * @author  (original)  Vinayakam Mani
 * @date    (original)  07-Aug-2024
@@ -25,7 +25,7 @@
 #define DD_VERSION_MAJOR        0
 #define DD_VERSION_MINOR        0
 #define DD_VERSION_MICRO        0
-#define DD_VERSION_BUILD  36
+#define DD_VERSION_BUILD  75
 
 // ********** development build switches **********
 
@@ -48,12 +48,11 @@
 //Uncomment below for bicarb chamber filling
 //#define __BICARB_CHAMBER_FILL__   1
 
-//Uncomment below for Maxon controller speed change
-//#define __MAXON_SPEED_UPDATE__    1
-
 //Uncomment below to disable heaters debug message
 #define __HEATERS_DEBUG__         1
 
+//Uncomment below if D1 placement is used for Temp control at dialyzer
+#define __USE_D1_TEMP_     1
 
     #include <stdio.h>
     #include <strings.h>