diff --git a/esp32/include/ControllerConfiguration.h b/esp32/include/ControllerConfiguration.h
index d604244..8a1ea42 100644
--- a/esp32/include/ControllerConfiguration.h
+++ b/esp32/include/ControllerConfiguration.h
@@ -122,11 +122,12 @@
 
 #define FIRMWARE_BASENAME "PlantControl"
 #define FIRMWARE_NAME FIRMWARE_BASENAME FIRMWARE_FEATURE1 FIRMWARE_FEATURE2
+#define FIRMWARE_VERSIONNMUMBER "3.001"
 
 #ifdef HWREVISION07
-    #define FIRMWARE_VERSION "3.01 HW0.7"
+    #define FIRMWARE_VERSION FIRMWARE_VERSIONNMUMBER " HW0.7"
 #else
-    #define FIRMWARE_VERSION "3.01 HW0.10b"
+    #define FIRMWARE_VERSION FIRMWARE_VERSIONNMUMBER " HW0.10b"
 #endif
 
 #define MOIST_SENSOR_MAX_FRQ               5200 // 60kHz (500Hz margin)
@@ -135,7 +136,11 @@
 #define ANALOG_SENSOR_MAX_MV                1300 //successive approximation of good range
 #define ANALOG_SENSOR_MIN_MV                100  //successive approximation of good range
 
-#define SOLAR_VOLT_FACTOR           11
+#ifdef HWREVISION07
+#define SOLAR_VOLT_FACTOR           (4.0306f) /**< 100k and 33k voltage dividor */
+#else
+#define SOLAR_VOLT_FACTOR           11f
+#endif
 #define BATTSENSOR_INDEX_SOLAR      0
 #define BATTSENSOR_INDEX_BATTERY    1