diff --git a/software/original/sources/SolderingStation2_u8glib_v1.8.ino b/software/original/sources/SolderingStation2_u8glib_v1.8.ino
index 9689387..20d7c14 100644
--- a/software/original/sources/SolderingStation2_u8glib_v1.8.ino
+++ b/software/original/sources/SolderingStation2_u8glib_v1.8.ino
@@ -19,6 +19,7 @@
 // - Tip change detection
 // - Can be used with either N or P channel mosfets
 // - Screen flip support
+// - Rotary encoder reverse support
 //
 // Power supply should be in the range of 16V/2A to 24V/3A and well
 // stabilized.
@@ -101,6 +102,7 @@
 #define PID_ENABLE    false     // enable PID control
 #define BEEP_ENABLE   true      // enable/disable buzzer
 #define BODYFLIP      false     // enable/disable screen flip
+#define ECREVERSE     false     // enable/disable rotary encoder reverse
 #define MAINSCREEN    0         // type of main screen (0: big numbers; 1: more infos)
 
 // EEPROM identifier
@@ -134,6 +136,7 @@ uint8_t   MainScrType = MAINSCREEN;
 bool      PIDenable   = PID_ENABLE;
 bool      beepEnable  = BEEP_ENABLE;
 bool      BodyFlip    = BODYFLIP;
+bool      ECReverse   = ECREVERSE;
 
 // Default values for tips
 uint16_t  CalTemp[TIPMAX][4] = {TEMP200, TEMP280, TEMP360, TEMPCHP};
@@ -144,7 +147,7 @@ uint8_t   NumberOfTips = 1;
 // Menu items
 const char *SetupItems[]       = { "Setup Menu", "Tip Settings", "Temp Settings",
                                    "Timer Settings", "Control Type", "Main Screen",
-                                   "Buzzer", "Screen Flip", "Information", "Return" };
+                                   "Buzzer", "Screen Flip", "EC Reverse", "Information", "Return" };
 const char *TipItems[]         = { "Tip:", "Change Tip", "Calibrate Tip", 
                                    "Rename Tip", "Delete Tip", "Add new Tip", "Return" };
 const char *TempItems[]        = { "Temp Settings", "Default Temp", "Sleep Temp", 
@@ -157,6 +160,7 @@ const char *StoreItems[]       = { "Store Settings ?", "No", "Yes" };
 const char *SureItems[]        = { "Are you sure ?", "No", "Yes" };
 const char *BuzzerItems[]      = { "Buzzer", "Disable", "Enable" };
 const char *FlipItems[]        = { "Screen Flip", "Disable", "Enable" };
+const char *ECReverseItems[]   = { "EC Reverse", "Disable", "Enable" };
 const char *DefaultTempItems[] = { "Default Temp", "deg C" };
 const char *SleepTempItems[]   = { "Sleep Temp", "deg C" };
 const char *BoostTempItems[]   = { "Boost Temp", "deg C" };
@@ -430,7 +434,7 @@ void beep(){
 void setRotary(int rmin, int rmax, int rstep, int rvalue) {
   countMin  = rmin << ROTARY_TYPE;
   countMax  = rmax << ROTARY_TYPE;
-  countStep = rstep;
+  countStep = ECReverse ? -rstep : rstep;
   count     = rvalue << ROTARY_TYPE;  
 }
 
@@ -455,11 +459,12 @@ void getEEPROM() {
     PIDenable   =  EEPROM.read(11);
     beepEnable  =  EEPROM.read(12);
     BodyFlip    =  EEPROM.read(13);
-    CurrentTip  =  EEPROM.read(14);
-    NumberOfTips = EEPROM.read(15);
+    ECReverse   =  EEPROM.read(14);
+    CurrentTip  =  EEPROM.read(15);
+    NumberOfTips = EEPROM.read(16);
 
     uint8_t i, j;
-    uint16_t counter = 16;
+    uint16_t counter = 17;
     for (i = 0; i < NumberOfTips; i++) {
       for (j = 0; j < TIPNAMELENGTH; j++) {
         TipName[i][j] = EEPROM.read(counter++);
@@ -491,11 +496,12 @@ void updateEEPROM() {
   EEPROM.update(11, PIDenable);
   EEPROM.update(12, beepEnable);
   EEPROM.update(13, BodyFlip);
-  EEPROM.update(14, CurrentTip);
-  EEPROM.update(15, NumberOfTips);
+  EEPROM.update(14, ECReverse);
+  EEPROM.update(15, CurrentTip);
+  EEPROM.update(16, NumberOfTips);
 
   uint8_t i, j;
-  uint16_t counter = 16;
+  uint16_t counter = 17;
   for (i = 0; i < NumberOfTips; i++) {
     for (j = 0; j < TIPNAMELENGTH; j++) EEPROM.update(counter++, TipName[i][j]);
     for (j = 0; j < 4; j++) {
@@ -574,7 +580,8 @@ void SetupScreen() {
       case 4:   MainScrType = MenuScreen(MainScreenItems, sizeof(MainScreenItems), MainScrType); break;
       case 5:   beepEnable = MenuScreen(BuzzerItems, sizeof(BuzzerItems), beepEnable); break;
       case 6:   BodyFlip = MenuScreen(FlipItems, sizeof(FlipItems), BodyFlip); SetFlip(); break;
-      case 7:   InfoScreen(); break;
+      case 7:   ECReverse = MenuScreen(ECReverseItems, sizeof(ECReverseItems), ECReverse); break;
+      case 8:   InfoScreen(); break;
       default:  repeat = false; break;
     }
   }