diff --git a/extra_script.py b/extra_script.py
index b185a93..dd9a90b 100644
--- a/extra_script.py
+++ b/extra_script.py
@@ -526,3 +526,17 @@ env.Append(
 )
 #script does not run on clean yet - maybe in the future
 env.AddPostAction("clean",cleangenerated)
+
+#look for extra task scripts and include them here
+for taskdir in userTaskDirs:
+    script = os.path.join(taskdir, "extra_task.py")
+    if os.path.isfile(script):
+        taskname = os.path.basename(os.path.normpath(taskdir))
+        print("#extra task script for '{}'".format(taskname))
+        with open(script) as fh:
+            try:
+                code = compile(fh.read(), taskname, 'exec')
+            except SyntaxError:
+                print("#ERROR: script does not compile")
+                continue
+            exec(code)
diff --git a/extra_script.py.new b/extra_script.py.new
index 31ae608..dd9a90b 100644
--- a/extra_script.py.new
+++ b/extra_script.py.new
@@ -520,19 +520,23 @@ prebuild(env)
 board="PLATFORM_BOARD_%s"%env["BOARD"].replace("-","_").upper()
 print("Board=#%s#"%board)
 print("BuildFlags=%s"%(" ".join(env["BUILD_FLAGS"])))
-
-epdtype = "unknown"
-pcbvers = "unknown"
-for x in env["BUILD_FLAGS"]:
-    if x.startswith("-D HARDWARE_"):
-        pcbvers = x.split('_')[1]
-    if x.startswith("-D DISPLAY_"):
-        epdtype = x.split('_')[1]
-
 env.Append(
     LINKFLAGS=[ "-u", "custom_app_desc" ],
-    CPPDEFINES=[(board,"1"), ("BOARD", env["BOARD"]), ("EPDTYPE", epdtype),
-                ("PCBVERS", pcbvers)]
+    CPPDEFINES=[(board,"1")]
 )
 #script does not run on clean yet - maybe in the future
 env.AddPostAction("clean",cleangenerated)
+
+#look for extra task scripts and include them here
+for taskdir in userTaskDirs:
+    script = os.path.join(taskdir, "extra_task.py")
+    if os.path.isfile(script):
+        taskname = os.path.basename(os.path.normpath(taskdir))
+        print("#extra task script for '{}'".format(taskname))
+        with open(script) as fh:
+            try:
+                code = compile(fh.read(), taskname, 'exec')
+            except SyntaxError:
+                print("#ERROR: script does not compile")
+                continue
+            exec(code)
diff --git a/lib/obp60task/OBP60Extensions.cpp b/lib/obp60task/OBP60Extensions.cpp
index 9b86292..70348e7 100644
--- a/lib/obp60task/OBP60Extensions.cpp
+++ b/lib/obp60task/OBP60Extensions.cpp
@@ -300,6 +300,49 @@ void fillPoly4(const std::vector<Point>& p4, uint16_t color) {
     getdisplay().fillTriangle(p4[0].x, p4[0].y, p4[2].x, p4[2].y, p4[3].x, p4[3].y, color);
 }
 
+// Split string into words, whitespace separated
+std::vector<String> split(const String &s) {
+    std::vector<String> words;
+    String word = "";
+    for (size_t i = 0; i < s.length(); i++) {
+        if (s[i] == ' ' || s[i] == '\t' || s[i] == '\r' || s[i] == '\n')  {
+            if (word.length() > 0) {
+                words.push_back(word);
+                word = "";
+            }
+        } else {
+             word += s[i];
+        }
+    }
+    if (word.length() > 0) {
+        words.push_back(word);
+    }
+    return words;
+}
+
+// Wordwrap single line, monospaced font
+std::vector<String> wordwrap(String &line, uint16_t maxwidth) {
+    std::vector<String> lines;
+    std::vector<String> words = split(line);
+    String currentLine = "";
+    for (const auto& word : words) {
+        if (currentLine.length() + word.length() + 1 > maxwidth) {
+             if (currentLine.length() > 0) {
+                  lines.push_back(currentLine);
+                  currentLine = "";
+             }
+        }
+        if (currentLine.length() > 0) {
+            currentLine += " ";
+        }
+        currentLine += word;
+    }
+    if (currentLine.length() > 0) {
+        lines.push_back(currentLine);
+    }
+    return lines;
+}
+
 // Draw centered text
 void drawTextCenter(int16_t cx, int16_t cy, String text) {
     int16_t x1, y1;
@@ -545,6 +588,47 @@ void displayFooter(CommonData &commonData) {
 #endif
 }
 
+// Alarm overlay, to be drawn as very last draw operation
+void displayAlarm(CommonData &commonData) {
+
+    const uint16_t x = 50;   // overlay area
+    const uint16_t y = 100;
+    const uint16_t w = 300;
+    const uint16_t h = 150;
+
+    getdisplay().setFont(&Atari16px);
+    getdisplay().setTextColor(commonData.fgcolor);
+
+    // overlay
+    getdisplay().drawRect(x, y, w, h, commonData.fgcolor);
+    getdisplay().fillRect(x + 1, y + 1, w - 1, h - 1, commonData.bgcolor);
+    getdisplay().drawRect(x + 3, y + 3, w - 5, h - 5, commonData.fgcolor);
+
+    // exclamation icon in left top corner
+    getdisplay().drawXBitmap(x + 16, y + 16, exclamation_bits, exclamation_width, exclamation_height, commonData.fgcolor);
+
+    // title
+    getdisplay().setCursor(x + 64, y + 30);
+    getdisplay().print("A L A R M");
+    getdisplay().setCursor(x + 64, y + 48);
+    getdisplay().print("#" + commonData.alarm.id);
+    getdisplay().print(" from ");
+    getdisplay().print(commonData.alarm.source);
+
+    // message, but maximum 4 lines
+    std::vector<String> lines = wordwrap (commonData.alarm.message, w - 16 - 8 / 8);
+    int n = 0;
+    for (const auto& l : lines) {
+        getdisplay().setCursor(x + 16, y + 80 + n);
+        getdisplay().print(l);
+        n += 16;
+        if (n > 64) {
+            break;
+        }
+    }
+    drawTextCenter(x + w / 2,  y + h - 16, "Press button 1 to dismiss alarm");
+}
+
 // Sunset und sunrise calculation
 SunData calcSunsetSunrise(double time, double date, double latitude, double longitude, float timezone){
     SunData returnset;
diff --git a/lib/obp60task/OBP60Extensions.h b/lib/obp60task/OBP60Extensions.h
index 94e7935..ed67716 100644
--- a/lib/obp60task/OBP60Extensions.h
+++ b/lib/obp60task/OBP60Extensions.h
@@ -57,6 +57,11 @@ GxEPD2_BW<GxEPD2_420_GYE042A87, GxEPD2_420_GYE042A87::HEIGHT> & getdisplay();
 GxEPD2_BW<GxEPD2_420_SE0420NQ04, GxEPD2_420_SE0420NQ04::HEIGHT> & getdisplay();
 #endif
 
+// Page display return values
+#define PAGE_OK 0          // all ok, do nothing
+#define PAGE_UPDATE 1      // page wants display to update
+#define PAGE_HIBERNATE 2   // page wants displey to hibernate
+
 struct Point {
     double x;
     double y;
@@ -97,6 +102,7 @@ void displayTrendLow(int16_t x, int16_t y, uint16_t size, uint16_t color);
 
 void displayHeader(CommonData &commonData, GwApi::BoatValue *date, GwApi::BoatValue *time, GwApi::BoatValue *hdop); // Draw display header
 void displayFooter(CommonData &commonData);
+void displayAlarm(CommonData &commonData);
 
 SunData calcSunsetSunrise(double time, double date, double latitude, double longitude, float timezone); // Calulate sunset and sunrise
 SunData calcSunsetSunriseRTC(struct tm *rtctime, double latitude, double longitude, float timezone);
@@ -142,12 +148,12 @@ static unsigned char fram_bits[] PROGMEM = {
    0xff, 0xff, 0xf8, 0x1f, 0xf8, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x1f,
    0xf8, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x1f };
 
-static unsigned char ap_bits[] = {
+static unsigned char ap_bits[] PROGMEM = {
    0xe0, 0x03, 0x18, 0x0c, 0x04, 0x10, 0xc2, 0x21, 0x30, 0x06, 0x08, 0x08,
    0xc0, 0x01, 0x20, 0x02, 0x00, 0x00, 0x80, 0x00, 0xc0, 0x01, 0xc0, 0x01,
    0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00 };
 
-static unsigned char dish_bits[] PROGMEM= {
+static unsigned char dish_bits[] PROGMEM = {
    0x3c, 0x00, 0x42, 0x18, 0xfa, 0x1b, 0x02, 0x04, 0x02, 0x0a, 0x02, 0x09,
    0x82, 0x08, 0x06, 0x0a, 0x0e, 0x1b, 0x9c, 0x2b, 0x38, 0x2b, 0x74, 0x20,
    0xec, 0x1f, 0x1c, 0x00, 0xf4, 0x00, 0xfe, 0x03 };
diff --git a/lib/obp60task/OBP60Formater.cpp b/lib/obp60task/OBP60Formater.cpp
index 6ac51a8..3fb5cff 100644
--- a/lib/obp60task/OBP60Formater.cpp
+++ b/lib/obp60task/OBP60Formater.cpp
@@ -37,6 +37,18 @@ String formatTime(char fmttype, uint8_t hour, uint8_t minute, uint8_t second) {
     return String(buffer);
 }
 
+String formatLatitude(double lat) {
+    float degree = abs(int(lat));
+    float minute = abs((lat - int(lat)) * 60);
+    return String(degree, 0) + "\x90 " + String(minute, 4) + "' " + ((lat > 0) ? "N" : "S");
+}
+
+String formatLongitude(double lon) {
+    float degree = abs(int(lon));
+    float minute = abs((lon - int(lon)) * 60);
+    return String(degree, 0) + "\x90 " + String(minute, 4) + "' " + ((lon > 0) ? "E" : "W");
+}
+
 FormatedData formatValue(GwApi::BoatValue *value, CommonData &commondata){
     GwLog *logger = commondata.logger;
     FormatedData result;
diff --git a/lib/obp60task/OBPSensorTask.cpp b/lib/obp60task/OBPSensorTask.cpp
index 311da1c..31c754c 100644
--- a/lib/obp60task/OBPSensorTask.cpp
+++ b/lib/obp60task/OBPSensorTask.cpp
@@ -498,14 +498,18 @@ void sensorTask(void *param){
         // Send supply voltage value all 1s
         if(millis() > starttime5 + 1000 && String(powsensor1) == "off"){
             starttime5 = millis();
-            float rawVoltage = 0;
-            #if defined(BOARD_OBP40S3) && defined(VOLTAGE_SENSOR)
+            float rawVoltage = 0;       // Default value
+            #ifdef BOARD_OBP40S3
+            sensors.batteryVoltage = 0; // If no sensor then zero voltage
+            #endif
+            #if defined(BOARD_OBP40S3)  && defined(VOLTAGE_SENSOR)
             rawVoltage = (float(analogRead(OBP_ANALOG0)) * 3.3 / 4096 + 0.53) * 2;   // Vin = 1/2 for OBP40
+            sensors.batteryVoltage = rawVoltage * vslope + voffset; // Calibration
             #endif
             #ifdef BOARD_OBP60S3
-            rawVoltage = (float(analogRead(OBP_ANALOG0)) * 3.3 / 4096 + 0.17) * 20;   // Vin = 1/20 for OBP60    
+            rawVoltage = (float(analogRead(OBP_ANALOG0)) * 3.3 / 4096 + 0.17) * 20;   // Vin = 1/20 for OBP60
+            sensors.batteryVoltage = rawVoltage * vslope + voffset; // Calibration  
             #endif
-            sensors.batteryVoltage = rawVoltage * vslope + voffset; // Calibration
             // Save new data in average array
             batV.reading(int(sensors.batteryVoltage * 100));
             // Calculate the average values for different time lines from integer values
diff --git a/lib/obp60task/PageBME280.cpp b/lib/obp60task/PageBME280.cpp
index 84fa030..540d5c5 100644
--- a/lib/obp60task/PageBME280.cpp
+++ b/lib/obp60task/PageBME280.cpp
@@ -20,7 +20,7 @@ class PageBME280 : public Page
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -176,9 +176,7 @@ class PageBME280 : public Page
         // Show bus data
         getdisplay().print(svalue3);                         // Real value as formated string
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
-
+        return PAGE_UPDATE;
     };
 };
 
diff --git a/lib/obp60task/PageBattery.cpp b/lib/obp60task/PageBattery.cpp
index e3304b5..0938b13 100644
--- a/lib/obp60task/PageBattery.cpp
+++ b/lib/obp60task/PageBattery.cpp
@@ -34,7 +34,7 @@ class PageBattery : public Page
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
         
@@ -288,9 +288,7 @@ class PageBattery : public Page
             getdisplay().print("---");                       // No sensor data (sensor is off)
         }
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
-
+        return PAGE_UPDATE;
     };
 };
 
diff --git a/lib/obp60task/PageBattery2.cpp b/lib/obp60task/PageBattery2.cpp
index c4497ef..b0b712b 100644
--- a/lib/obp60task/PageBattery2.cpp
+++ b/lib/obp60task/PageBattery2.cpp
@@ -44,7 +44,7 @@ public:
         return key;
     }
 
-    virtual void displayPage(PageData &pageData)
+    int displayPage(PageData &pageData)
     {
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
@@ -334,8 +334,7 @@ public:
         getdisplay().setFont(&Ubuntu_Bold16pt8b);
         getdisplay().print("W");
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
+        return PAGE_UPDATE;
     };
 };
 
diff --git a/lib/obp60task/PageClock.cpp b/lib/obp60task/PageClock.cpp
index 7a293b2..b567d1d 100644
--- a/lib/obp60task/PageClock.cpp
+++ b/lib/obp60task/PageClock.cpp
@@ -85,7 +85,7 @@ bool homevalid = false; // homelat and homelon are valid
         return key;
     }
 
-    virtual void displayPage(PageData &pageData)
+    int displayPage(PageData &pageData)
     {
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
@@ -162,7 +162,7 @@ bool homevalid = false; // homelat and homelon are valid
         }
 
         // Logging boat values
-        if (bvalue1 == NULL) return;
+        if (bvalue1 == NULL) return PAGE_OK; // WTF why this statement?
         LOG_DEBUG(GwLog::LOG,"Drawing at PageClock, %s:%f,  %s:%f", name1.c_str(), value1, name2.c_str(), value2);
 
         // Draw page
@@ -438,9 +438,7 @@ bool homevalid = false; // homelat and homelon are valid
         getdisplay().fillCircle(200, 150, startwidth + 6, commonData->bgcolor);
         getdisplay().fillCircle(200, 150, startwidth + 4, commonData->fgcolor);
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
-
+        return PAGE_UPDATE;
     };
 };
 
diff --git a/lib/obp60task/PageCompass.cpp b/lib/obp60task/PageCompass.cpp
index 202d8d9..783e8cd 100644
--- a/lib/obp60task/PageCompass.cpp
+++ b/lib/obp60task/PageCompass.cpp
@@ -61,7 +61,7 @@ class PageCompass : public Page
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
     
@@ -104,7 +104,7 @@ class PageCompass : public Page
             setFlashLED(false); 
         }
 
-        if (bvalue == NULL) return;
+        if (bvalue == NULL) return PAGE_OK; // WTF why this statement?
         
         //***********************************************************
 
@@ -235,12 +235,11 @@ class PageCompass : public Page
         // if ( x_test > 390)
         //     x_test = 320;
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
-    
-        };
-    
+        return PAGE_UPDATE;
     };
+
+};
+
 static Page *createPage(CommonData &common){
     return new PageCompass(common);
 }/**
diff --git a/lib/obp60task/PageDST810.cpp b/lib/obp60task/PageDST810.cpp
index 5eb1452..2ac7494 100644
--- a/lib/obp60task/PageDST810.cpp
+++ b/lib/obp60task/PageDST810.cpp
@@ -20,7 +20,7 @@ public:
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -84,7 +84,7 @@ public:
         }
 
         // Logging boat values
-        if (bvalue1 == NULL) return;
+        if (bvalue1 == NULL) return PAGE_OK; // WTF why this statement?
         LOG_DEBUG(GwLog::LOG,"Drawing at PageDST810, %s: %f, %s: %f, %s: %f, %s: %f", name1.c_str(), value1, name2.c_str(), value2, name3.c_str(), value3, name4.c_str(), value4);
 
         // Draw page
@@ -242,9 +242,7 @@ public:
             unit4old = unit4;                                           // Save the old unit
         }
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
-
+        return PAGE_UPDATE;
     };
 };
 
diff --git a/lib/obp60task/PageFluid.cpp b/lib/obp60task/PageFluid.cpp
index 51ce120..f844d87 100644
--- a/lib/obp60task/PageFluid.cpp
+++ b/lib/obp60task/PageFluid.cpp
@@ -98,7 +98,7 @@ class PageFluid : public Page
         commonData->logger->logDebug(GwLog::LOG,"New PageFluid: fluidtype=%d", fluidtype);
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -252,9 +252,7 @@ class PageFluid : public Page
             getdisplay().fillCircle(c.x, c.y, 6, commonData->bgcolor);
         }
  
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
-
+        return PAGE_UPDATE;
     };
 };
 
diff --git a/lib/obp60task/PageFourValues.cpp b/lib/obp60task/PageFourValues.cpp
index d931f20..53120cc 100644
--- a/lib/obp60task/PageFourValues.cpp
+++ b/lib/obp60task/PageFourValues.cpp
@@ -21,7 +21,7 @@ class PageFourValues : public Page
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -89,7 +89,7 @@ class PageFourValues : public Page
         }
 
         // Logging boat values
-        if (bvalue1 == NULL) return;
+        if (bvalue1 == NULL) return PAGE_OK; // WTF why this statement?
         LOG_DEBUG(GwLog::LOG,"Drawing at PageFourValues, %s: %f, %s: %f, %s: %f, %s: %f", name1.c_str(), value1, name2.c_str(), value2, name3.c_str(), value3, name4.c_str(), value4);
 
         // Draw page
@@ -287,9 +287,7 @@ class PageFourValues : public Page
             unit4old = unit4;                                           // Save the old unit
         }
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
-
+        return PAGE_UPDATE;
     };
 };
 
diff --git a/lib/obp60task/PageFourValues2.cpp b/lib/obp60task/PageFourValues2.cpp
index db1fba0..e608409 100644
--- a/lib/obp60task/PageFourValues2.cpp
+++ b/lib/obp60task/PageFourValues2.cpp
@@ -21,7 +21,7 @@ class PageFourValues2 : public Page
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -89,7 +89,7 @@ class PageFourValues2 : public Page
         }
 
         // Logging boat values
-        if (bvalue1 == NULL) return;
+        if (bvalue1 == NULL) return PAGE_OK; // WTF why this statement?
         LOG_DEBUG(GwLog::LOG,"Drawing at PageFourValues2, %s: %f, %s: %f, %s: %f, %s: %f", name1.c_str(), value1, name2.c_str(), value2, name3.c_str(), value3, name4.c_str(), value4);
 
         // Draw page
@@ -287,9 +287,7 @@ class PageFourValues2 : public Page
             unit4old = unit4;                                           // Save the old unit
         }
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
-
+        return PAGE_UPDATE;
     };
 };
 
diff --git a/lib/obp60task/PageGenerator.cpp b/lib/obp60task/PageGenerator.cpp
index 276e4b0..201b647 100644
--- a/lib/obp60task/PageGenerator.cpp
+++ b/lib/obp60task/PageGenerator.cpp
@@ -20,7 +20,7 @@ public:
         return key;
     }
 
-    virtual void displayPage(PageData &pageData)
+    int displayPage(PageData &pageData)
     {
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
@@ -203,8 +203,7 @@ public:
         getdisplay().setFont(&Ubuntu_Bold16pt8b);
         getdisplay().print("W");
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
+        return PAGE_UPDATE;
     };
 };
 
diff --git a/lib/obp60task/PageKeelPosition.cpp b/lib/obp60task/PageKeelPosition.cpp
index 5a25866..48e5018 100644
--- a/lib/obp60task/PageKeelPosition.cpp
+++ b/lib/obp60task/PageKeelPosition.cpp
@@ -21,7 +21,7 @@ public:
         return key;
     }
 
-    virtual void displayPage(PageData &pageData)
+    int displayPage(PageData &pageData)
     {
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
@@ -206,9 +206,7 @@ public:
             getdisplay().print("No sensor data");            // Info missing sensor
         }
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
-
+        return PAGE_UPDATE;
     };
 };
 
diff --git a/lib/obp60task/PageOneValue.cpp b/lib/obp60task/PageOneValue.cpp
index ebdb96e..6f33597 100644
--- a/lib/obp60task/PageOneValue.cpp
+++ b/lib/obp60task/PageOneValue.cpp
@@ -21,7 +21,7 @@ class PageOneValue : public Page
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -53,7 +53,7 @@ class PageOneValue : public Page
         }
 
         // Logging boat values
-        if (bvalue1 == NULL) return;
+        if (bvalue1 == NULL) return PAGE_OK; // WTF why this statement?
         LOG_DEBUG(GwLog::LOG,"Drawing at PageOneValue, %s: %f", name1.c_str(), value1);
 
         // Draw page
@@ -104,9 +104,7 @@ class PageOneValue : public Page
             unit1old = unit1;                                           // Save the old unit
         }
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
-
+        return PAGE_UPDATE;
     };
 };
 
diff --git a/lib/obp60task/PageRollPitch.cpp b/lib/obp60task/PageRollPitch.cpp
index 488056d..db3d27f 100644
--- a/lib/obp60task/PageRollPitch.cpp
+++ b/lib/obp60task/PageRollPitch.cpp
@@ -21,7 +21,7 @@ public:
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -109,7 +109,7 @@ public:
         }
 
         // Logging boat values
-        if (bvalue1 == NULL) return;
+        if (bvalue1 == NULL) return PAGE_OK; // WTF why this statement?
         LOG_DEBUG(GwLog::LOG,"Drawing at PageRollPitch, %s:%f,  %s:%f", name1.c_str(), value1, name2.c_str(), value2);
 
         // Draw page
@@ -305,9 +305,7 @@ public:
             getdisplay().print("No sensor data");            // Info missing sensor
         }
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
-
+        return PAGE_UPDATE;
     };
 };
 
diff --git a/lib/obp60task/PageRudderPosition.cpp b/lib/obp60task/PageRudderPosition.cpp
index a11f917..22b5f91 100644
--- a/lib/obp60task/PageRudderPosition.cpp
+++ b/lib/obp60task/PageRudderPosition.cpp
@@ -22,7 +22,7 @@ public:
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+   int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -67,7 +67,7 @@ public:
         }
 
         // Logging boat values
-        if (bvalue1 == NULL) return;
+        if (bvalue1 == NULL) return PAGE_OK; // WTF why this statement?
         LOG_DEBUG(GwLog::LOG,"Drawing at PageRudderPosition, %s:%f", name1.c_str(), value1);
 
         // Draw page
@@ -207,8 +207,7 @@ public:
         getdisplay().fillCircle(200, 150, startwidth + 6, commonData->bgcolor);
         getdisplay().fillCircle(200, 150, startwidth + 4, commonData->fgcolor);
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
+        return PAGE_UPDATE;
     };
 };
 
diff --git a/lib/obp60task/PageSixValues.cpp b/lib/obp60task/PageSixValues.cpp
index fc42ad9..af735f2 100644
--- a/lib/obp60task/PageSixValues.cpp
+++ b/lib/obp60task/PageSixValues.cpp
@@ -29,7 +29,7 @@ class PageSixValues : public Page
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -71,7 +71,7 @@ class PageSixValues : public Page
                 setFlashLED(false); 
             }
     
-            if (bvalue == NULL) return;
+            if (bvalue == NULL) return PAGE_OK; // WTF why this statement?
            
             // Draw page
             //***********************************************************
@@ -149,9 +149,7 @@ class PageSixValues : public Page
             getdisplay().fillRect(SixValues_x1+SixValues_DeltaX-8, SixValues_y1+i*SixValues_DeltaY, 3, SixValues_DeltaY, commonData->fgcolor);
             }
     
-            // Update display
-            getdisplay().nextPage();    // Partial update (fast)
-    
+            return PAGE_UPDATE;
         };
     
     };
diff --git a/lib/obp60task/PageSolar.cpp b/lib/obp60task/PageSolar.cpp
index 1962b66..2a19bb9 100644
--- a/lib/obp60task/PageSolar.cpp
+++ b/lib/obp60task/PageSolar.cpp
@@ -20,7 +20,7 @@ public:
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
         
@@ -199,8 +199,7 @@ public:
         getdisplay().setFont(&Ubuntu_Bold16pt8b);
         getdisplay().print("W");
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
+        return PAGE_UPDATE;
     };
 };
 
diff --git a/lib/obp60task/PageSystem.cpp b/lib/obp60task/PageSystem.cpp
index 18852cb..ddff3d4 100644
--- a/lib/obp60task/PageSystem.cpp
+++ b/lib/obp60task/PageSystem.cpp
@@ -17,6 +17,7 @@
 #define BOARDINFO STRINGIZE(BOARD)
 #define PCBINFO STRINGIZE(PCBVERS)
 #define DISPLAYINFO STRINGIZE(EPDTYPE)
+#define GXEPD2INFO STRINGIZE(GXEPD2VERS)
 
 /*
  * Special system page, called directly with fast key sequence 5,4
@@ -43,6 +44,8 @@ String batt_sensor;
 String solar_sensor;
 String gen_sensor;
 String rot_sensor;
+double homelat;
+double homelon;
 
 char mode = 'N'; // (N)ormal, (S)ettings, (D)evice list, (C)ard
 
@@ -69,6 +72,8 @@ public:
         solar_sensor = common.config->getString(common.config->usePowSensor2);
         gen_sensor = common.config->getString(common.config->usePowSensor3);
         rot_sensor = common.config->getString(common.config->useRotSensor);
+        homelat = common.config->getString(common.config->homeLAT).toDouble();
+        homelon = common.config->getString(common.config->homeLON).toDouble();
     }
 
     virtual void setupKeys(){
@@ -159,7 +164,7 @@ public:
         }
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -203,19 +208,21 @@ public:
 
             getdisplay().setCursor(8, 95);
             getdisplay().print("Firmware version: ");
-            getdisplay().setCursor(160, 95);
+            getdisplay().setCursor(150, 95);
             getdisplay().print(VERSINFO);
 
             getdisplay().setCursor(8, 113);
             getdisplay().print("Board version: ");
-            getdisplay().setCursor(160, 113);
+            getdisplay().setCursor(150, 113);
             getdisplay().print(BOARDINFO);
             getdisplay().print(String(" HW ") + String(PCBINFO));
 
             getdisplay().setCursor(8, 131);
             getdisplay().print("Display version: ");
-            getdisplay().setCursor(160, 131);
+            getdisplay().setCursor(150, 131);
             getdisplay().print(DISPLAYINFO);
+            getdisplay().print("; GxEPD2 v");
+            getdisplay().print(GXEPD2INFO);
 
             getdisplay().setCursor(8, 265);
 #ifdef BOARD_OBP60S3
@@ -295,34 +302,44 @@ public:
             // left column
             getdisplay().setCursor(x0, y0);
             getdisplay().print("Simulation:");
-            getdisplay().setCursor(140, y0);
+            getdisplay().setCursor(120, y0);
             getdisplay().print(simulation ? "on" : "off");
 
             getdisplay().setCursor(x0, y0 + 16);
             getdisplay().print("Environment:");
-            getdisplay().setCursor(140, y0 + 16);
+            getdisplay().setCursor(120, y0 + 16);
             getdisplay().print(env_module);
 
             getdisplay().setCursor(x0, y0 + 32);
             getdisplay().print("Buzzer:");
-            getdisplay().setCursor(140, y0 + 32);
+            getdisplay().setCursor(120, y0 + 32);
             getdisplay().print(buzzer_mode);
 
             getdisplay().setCursor(x0, y0 + 64);
             getdisplay().print("GPS:");
-            getdisplay().setCursor(140, y0 + 64);
+            getdisplay().setCursor(120, y0 + 64);
             getdisplay().print(gps_module);
 
             getdisplay().setCursor(x0, y0 + 80);
             getdisplay().print("RTC:");
-            getdisplay().setCursor(140, y0 + 80);
+            getdisplay().setCursor(120, y0 + 80);
             getdisplay().print(rtc_module);
 
             getdisplay().setCursor(x0, y0 + 96);
             getdisplay().print("Wifi:");
-            getdisplay().setCursor(140, y0 + 96);
+            getdisplay().setCursor(120, y0 + 96);
             getdisplay().print(commonData->status.wifiApOn ? "on" : "off");
 
+            // Home location
+            getdisplay().setCursor(x0, y0 + 128);
+            getdisplay().print("Home Lat.:");
+            getdisplay().setCursor(120, y0 + 128);
+            getdisplay().print(formatLatitude(homelat));
+            getdisplay().setCursor(x0, y0 + 144);
+            getdisplay().print("Home Lon.:");
+            getdisplay().setCursor(120, y0 + 144);
+            getdisplay().print(formatLongitude(homelon));
+
             // right column
             getdisplay().setCursor(202, y0);
             getdisplay().print("Batt. sensor:");
@@ -374,7 +391,7 @@ public:
 
         // Update display
         getdisplay().nextPage();    // Partial update (fast)
-
+        return PAGE_OK;
     };
 };
 
diff --git a/lib/obp60task/PageThreeValues.cpp b/lib/obp60task/PageThreeValues.cpp
index d2131b7..3bd2d0b 100644
--- a/lib/obp60task/PageThreeValues.cpp
+++ b/lib/obp60task/PageThreeValues.cpp
@@ -21,7 +21,7 @@ class PageThreeValues : public Page
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -77,7 +77,7 @@ class PageThreeValues : public Page
         }
 
         // Logging boat values
-        if (bvalue1 == NULL) return;
+        if (bvalue1 == NULL) return PAGE_OK; // WTF why this statement?
         LOG_DEBUG(GwLog::LOG,"Drawing at PageThreeValues, %s: %f, %s: %f, %s: %f", name1.c_str(), value1, name2.c_str(), value2, name3.c_str(), value3);
 
         // Draw page
@@ -226,8 +226,7 @@ class PageThreeValues : public Page
             unit3old = unit3;                                           // Save the old unit
         }
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
+        return PAGE_UPDATE;
     };
 };
 
diff --git a/lib/obp60task/PageTwoValues.cpp b/lib/obp60task/PageTwoValues.cpp
index 2859fd2..8b27e7b 100644
--- a/lib/obp60task/PageTwoValues.cpp
+++ b/lib/obp60task/PageTwoValues.cpp
@@ -21,7 +21,7 @@ class PageTwoValues : public Page
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -65,7 +65,7 @@ class PageTwoValues : public Page
         }
 
         // Logging boat values
-        if (bvalue1 == NULL) return;
+        if (bvalue1 == NULL) return PAGE_OK; // WTF why this statement?
         LOG_DEBUG(GwLog::LOG,"Drawing at PageTwoValues, %s: %f, %s: %f", name1.c_str(), value1, name2.c_str(), value2);
 
         // Draw page
@@ -166,8 +166,7 @@ class PageTwoValues : public Page
             unit2old = unit2;                                           // Save the old unit
         }
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
+        return PAGE_UPDATE;
     };
 };
 
diff --git a/lib/obp60task/PageVoltage.cpp b/lib/obp60task/PageVoltage.cpp
index 2aab416..3c2693b 100644
--- a/lib/obp60task/PageVoltage.cpp
+++ b/lib/obp60task/PageVoltage.cpp
@@ -100,7 +100,7 @@ public:
         getdisplay().fillRect(x + 16, y + 11, 6, 3, color);
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
         
@@ -187,7 +187,6 @@ public:
         }
         
         // Logging voltage value
-        if (raw == 0) return;
         LOG_DEBUG(GwLog::LOG,"Drawing at PageVoltage, Type:%s %s:=%f", batType, name1.c_str(), raw);
 
         // Draw page
@@ -384,8 +383,7 @@ public:
 
         }
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
+        return PAGE_UPDATE;
     };
 };
 
diff --git a/lib/obp60task/PageWhite.cpp b/lib/obp60task/PageWhite.cpp
index e40a3ac..ada2616 100644
--- a/lib/obp60task/PageWhite.cpp
+++ b/lib/obp60task/PageWhite.cpp
@@ -31,7 +31,7 @@ public:
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -67,10 +67,13 @@ public:
         }
 
         // Update display
-        getdisplay().nextPage();
+        // getdisplay().nextPage();
+        int ret = PAGE_UPDATE;
         if (mode == 'W') {
-            getdisplay().hibernate();
+            //getdisplay().hibernate();
+            ret |= PAGE_HIBERNATE;
         }
+        return ret;
 
     };
 };
diff --git a/lib/obp60task/PageWind.cpp b/lib/obp60task/PageWind.cpp
index 0a94857..0b11461 100644
--- a/lib/obp60task/PageWind.cpp
+++ b/lib/obp60task/PageWind.cpp
@@ -296,7 +296,7 @@ public:
         return key;
     }
 
-    virtual void displayPage(PageData &pageData)
+    int displayPage(PageData &pageData)
     {
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
@@ -354,7 +354,7 @@ public:
         }
 
         // Logging boat values
-        if (bvalue1 == NULL) return;
+        if (bvalue1 == NULL) return PAGE_OK; // WTF why this statement?
         LOG_DEBUG(GwLog::LOG,"Drawing at PageWind, %s:%f,  %s:%f", name1.c_str(), value1, name2.c_str(), value2);
 
         // Draw page
@@ -618,9 +618,7 @@ public:
 
         }
 
-        // Update display
-        getdisplay().nextPage();     // Partial update (fast)
-
+        return PAGE_UPDATE;
     };
 };
 
diff --git a/lib/obp60task/PageWindRose.cpp b/lib/obp60task/PageWindRose.cpp
index 9b1c203..45c62ce 100644
--- a/lib/obp60task/PageWindRose.cpp
+++ b/lib/obp60task/PageWindRose.cpp
@@ -24,7 +24,7 @@ public:
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -140,7 +140,7 @@ public:
         }
 
         // Logging boat values
-        if (bvalue1 == NULL) return;
+        if (bvalue1 == NULL) return PAGE_OK; // WTF why this statement?
         LOG_DEBUG(GwLog::LOG,"Drawing at PageWindRose, %s:%f,  %s:%f,  %s:%f,  %s:%f,  %s:%f,  %s:%f", name1.c_str(), value1, name2.c_str(), value2, name3.c_str(), value3, name4.c_str(), value4, name5.c_str(), value5, name6.c_str(), value6);
 
         // Draw page
@@ -357,8 +357,7 @@ public:
             getdisplay().print(unit6old);                // Unit
         }
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
+        return PAGE_UPDATE;
     };
 };
 
diff --git a/lib/obp60task/PageWindRoseFlex.cpp b/lib/obp60task/PageWindRoseFlex.cpp
index bee86fe..f0e21ab 100644
--- a/lib/obp60task/PageWindRoseFlex.cpp
+++ b/lib/obp60task/PageWindRoseFlex.cpp
@@ -24,7 +24,7 @@ public:
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -140,7 +140,7 @@ public:
         }
 
         // Logging boat values
-        if (bvalue1 == NULL) return;
+        if (bvalue1 == NULL) return PAGE_OK; // WTF why this statement?
         LOG_DEBUG(GwLog::LOG,"Drawing at PageWindRoseFlex, %s:%f,  %s:%f,  %s:%f,  %s:%f,  %s:%f,  %s:%f", name1.c_str(), value1, name2.c_str(), value2, name3.c_str(), value3, name4.c_str(), value4, name5.c_str(), value5, name6.c_str(), value6);
 
         // Draw page
@@ -362,8 +362,7 @@ if ( cos(value1) > 0){
     }
     
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
+        return PAGE_UPDATE;
     };
 };
 
diff --git a/lib/obp60task/PageXTETrack.cpp b/lib/obp60task/PageXTETrack.cpp
index 5b0bdbb..cbb0af5 100644
--- a/lib/obp60task/PageXTETrack.cpp
+++ b/lib/obp60task/PageXTETrack.cpp
@@ -65,7 +65,7 @@ class PageXTETrack : public Page
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -207,9 +207,7 @@ class PageXTETrack : public Page
         drawSegment(399, 100, 318, 24, 289, 24, 350, 100, commonData->fgcolor, seg[4]);
         drawSegment(399, 54, 354, 24, 325, 24, 399, 90, commonData->fgcolor, seg[5]);
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
-
+        return PAGE_UPDATE;
     };
 };
 
diff --git a/lib/obp60task/Pagedata.h b/lib/obp60task/Pagedata.h
index ad252ea..75a4b8c 100644
--- a/lib/obp60task/Pagedata.h
+++ b/lib/obp60task/Pagedata.h
@@ -82,6 +82,22 @@ typedef struct{
     bool on;            // fast on/off detector
 } BacklightData;
 
+enum AlarmSource {
+    Alarm_Generic,
+    Alarm_Local,
+    Alarm_NMEA0183,
+    Alarm_NMEA2000
+};
+
+typedef struct{
+    uint8_t id; // alarm-id e.g. 01..99 from NMEA0183
+    AlarmSource source;
+    String message; // single line of plain text
+    bool active = false;
+    uint8_t signal; // how to signal MESSAGE | LED | BUZZER
+    uint8_t length_sec; // seconds until alarm disappeares without user interaction
+} AlarmData;
+
 typedef struct{
   GwApi::Status status;
   GwLog *logger=NULL;
@@ -90,6 +106,7 @@ typedef struct{
   SunData sundata;
   TouchKeyData keydata[6];
   BacklightData backlight;
+  AlarmData alarm;
   GwApi::BoatValue *time=NULL;
   GwApi::BoatValue *date=NULL;
   uint16_t fgcolor;
@@ -104,7 +121,7 @@ class Page{
     CommonData *commonData;
   public:
     int refreshtime = 1000;
-    virtual void displayPage(PageData &pageData)=0;
+    virtual int displayPage(PageData &pageData)=0;
     virtual void displayNew(PageData &pageData){}
     virtual void setupKeys() {
 #ifdef HARDWARE_V21
@@ -172,6 +189,8 @@ class PageStruct{
 // Standard format functions without overhead
 String formatDate(String fmttype, uint16_t year, uint8_t month, uint8_t day);
 String formatTime(char fmttype, uint8_t hour, uint8_t minute, uint8_t second);
+String formatLatitude(double lat);
+String formatLongitude(double lon);
 
 // Structure for formatted boat values
 typedef struct{
diff --git a/lib/obp60task/config.json b/lib/obp60task/config.json
index c1f9ab8..eed7ba2 100644
--- a/lib/obp60task/config.json
+++ b/lib/obp60task/config.json
@@ -737,7 +737,7 @@
         "condition": [
             { "calInstance1": "AWA" },
             { "calInstance1": "AWS" },
-            { "calInstance2": "COG" },
+            { "calInstance1": "COG" },
             { "calInstance1": "DBT" },
             { "calInstance1": "HDM" },
             { "calInstance1": "PRPOS" },
@@ -762,7 +762,7 @@
         "condition": [
             { "calInstance1": "AWA" },
             { "calInstance1": "AWS" },
-            { "calInstance2": "COG" },
+            { "calInstance1": "COG" },
             { "calInstance1": "DBT" },
             { "calInstance1": "HDM" },
             { "calInstance1": "PRPOS" },
@@ -790,7 +790,7 @@
         "condition": [
             { "calInstance1": "AWA" },
             { "calInstance1": "AWS" },
-            { "calInstance2": "COG" },
+            { "calInstance1": "COG" },
             { "calInstance1": "DBT" },
             { "calInstance1": "HDM" },
             { "calInstance1": "PRPOS" },
@@ -1296,8 +1296,6 @@
             "obp60":"true"
         }
     },
- 
-    
     {
         "name": "page1type",
         "label": "Type",
diff --git a/lib/obp60task/config_obp40.json b/lib/obp60task/config_obp40.json
index 8747e4e..92cb0f6 100644
--- a/lib/obp60task/config_obp40.json
+++ b/lib/obp60task/config_obp40.json
@@ -718,10 +718,12 @@
             "---",
             "AWA",
             "AWS",
+            "COG",
             "DBT",
             "HDM",
             "PRPOS",
             "RPOS",
+            "SOG",
             "STW",
             "TWA",
             "TWS",
@@ -741,8 +743,22 @@
         "description": "Offset for data instance 1",
         "category": "OBP40 Calibrations",
         "capabilities": {
-            "obp40": "true"
-        }
+            "obp40":"true"
+        },
+        "condition": [
+            { "calInstance1": "AWA" },
+            { "calInstance1": "AWS" },
+            { "calInstance1": "COG" },
+            { "calInstance1": "DBT" },
+            { "calInstance1": "HDM" },
+            { "calInstance1": "PRPOS" },
+            { "calInstance1": "RPOS" },
+            { "calInstance1": "SOG" },
+            { "calInstance1": "STW" },
+            { "calInstance1": "TWA" },
+            { "calInstance1": "TWS" },
+            { "calInstance1": "TWD" },
+            { "calInstance1": "WTemp" } ]
     },
     {
         "name": "calSlope1",
@@ -752,8 +768,22 @@
         "description": "Slope for data instance 1",
         "category": "OBP40 Calibrations",
         "capabilities": {
-            "obp40": "true"
-        }
+            "obp40":"true"
+        },
+        "condition": [
+            { "calInstance1": "AWA" },
+            { "calInstance1": "AWS" },
+            { "calInstance1": "COG" },
+            { "calInstance1": "DBT" },
+            { "calInstance1": "HDM" },
+            { "calInstance1": "PRPOS" },
+            { "calInstance1": "RPOS" },
+            { "calInstance1": "SOG" },
+            { "calInstance1": "STW" },
+            { "calInstance1": "TWA" },
+            { "calInstance1": "TWS" },
+            { "calInstance1": "TWD" },
+            { "calInstance1": "WTemp" }  ]
     },
     {
         "name": "calSmooth1",
@@ -763,11 +793,25 @@
         "check": "checkMinMax",
         "min": 0,
         "max": 10,
-        "description": "Smoothing factor for data instance 1",
+        "description": "Smoothing factor [0..10]; 0 = no smoothing",
         "category": "OBP40 Calibrations",
         "capabilities": {
-            "obp40": "true"
-        }
+            "obp40":"true"
+        },
+        "condition": [
+            { "calInstance1": "AWA" },
+            { "calInstance1": "AWS" },
+            { "calInstance1": "COG" },
+            { "calInstance1": "DBT" },
+            { "calInstance1": "HDM" },
+            { "calInstance1": "PRPOS" },
+            { "calInstance1": "RPOS" },
+            { "calInstance1": "SOG" },
+            { "calInstance1": "STW" },
+            { "calInstance1": "TWA" },
+            { "calInstance1": "TWS" },
+            { "calInstance1": "TWD" },
+            { "calInstance1": "WTemp" }  ]
     },
     {
         "name": "calInstance2",
@@ -779,10 +823,12 @@
             "---",
             "AWA",
             "AWS",
+            "COG",
             "DBT",
             "HDM",
             "PRPOS",
             "RPOS",
+            "SOG",
             "STW",
             "TWA",
             "TWS",
@@ -802,8 +848,22 @@
         "description": "Offset for data instance 2",
         "category": "OBP40 Calibrations",
         "capabilities": {
-            "obp40": "true"
-        }
+            "obp40":"true"
+        },
+        "condition": [
+            { "calInstance2": "AWA" },
+            { "calInstance2": "AWS" },
+            { "calInstance2": "COG" },
+            { "calInstance2": "DBT" },
+            { "calInstance2": "HDM" },
+            { "calInstance2": "PRPOS" },
+            { "calInstance2": "RPOS" },
+            { "calInstance2": "SOG" },
+            { "calInstance2": "STW" },
+            { "calInstance2": "TWA" },
+            { "calInstance2": "TWS" },
+            { "calInstance2": "TWD" },
+            { "calInstance2": "WTemp" } ]
     },
     {
         "name": "calSlope2",
@@ -813,8 +873,22 @@
         "description": "Slope for data instance 2",
         "category": "OBP40 Calibrations",
         "capabilities": {
-            "obp40": "true"
-        }
+            "obp40":"true"
+        },
+        "condition": [
+            { "calInstance2": "AWA" },
+            { "calInstance2": "AWS" },
+            { "calInstance2": "COG" },
+            { "calInstance2": "DBT" },
+            { "calInstance2": "HDM" },
+            { "calInstance2": "PRPOS" },
+            { "calInstance2": "RPOS" },
+            { "calInstance2": "SOG" },
+            { "calInstance2": "STW" },
+            { "calInstance2": "TWA" },
+            { "calInstance2": "TWS" },
+            { "calInstance2": "TWD" },
+            { "calInstance2": "WTemp" } ]
     },
     {
         "name": "calSmooth2",
@@ -824,11 +898,25 @@
         "check": "checkMinMax",
         "min": 0,
         "max": 10,
-        "description": "Smoothing factor for data instance 2",
+        "description": "Smoothing factor [0..10]; 0 = no smoothing",
         "category": "OBP40 Calibrations",
         "capabilities": {
-            "obp40": "true"
-        }
+            "obp40":"true"
+        },
+        "condition": [
+            { "calInstance2": "AWA" },
+            { "calInstance2": "AWS" },
+            { "calInstance2": "COG" },
+            { "calInstance2": "DBT" },
+            { "calInstance2": "HDM" },
+            { "calInstance2": "PRPOS" },
+            { "calInstance2": "RPOS" },
+            { "calInstance2": "SOG" },
+            { "calInstance2": "STW" },
+            { "calInstance2": "TWA" },
+            { "calInstance2": "TWS" },
+            { "calInstance2": "TWD" },
+            { "calInstance2": "WTemp" } ]
     },
     {
         "name": "calInstance3",
@@ -840,10 +928,12 @@
             "---",
             "AWA",
             "AWS",
+            "COG",
             "DBT",
             "HDM",
             "PRPOS",
             "RPOS",
+            "SOG",
             "STW",
             "TWA",
             "TWS",
@@ -863,8 +953,22 @@
         "description": "Offset for data instance 3",
         "category": "OBP40 Calibrations",
         "capabilities": {
-            "obp40": "true"
-        }
+            "obp40":"true"
+        },
+        "condition": [
+            { "calInstance3": "AWA" },
+            { "calInstance3": "AWS" },
+            { "calInstance3": "COG" },
+            { "calInstance3": "DBT" },
+            { "calInstance3": "HDM" },
+            { "calInstance3": "PRPOS" },
+            { "calInstance3": "RPOS" },
+            { "calInstance3": "SOG" },
+            { "calInstance3": "STW" },
+            { "calInstance3": "TWA" },
+            { "calInstance3": "TWS" },
+            { "calInstance3": "TWD" },
+            { "calInstance3": "WTemp" } ]
     },
     {
         "name": "calSlope3",
@@ -874,8 +978,22 @@
         "description": "Slope for data instance 3",
         "category": "OBP40 Calibrations",
         "capabilities": {
-            "obp40": "true"
-        }
+            "obp40":"true"
+        },
+        "condition": [
+            { "calInstance3": "AWA" },
+            { "calInstance3": "AWS" },
+            { "calInstance3": "COG" },
+            { "calInstance3": "DBT" },
+            { "calInstance3": "HDM" },
+            { "calInstance3": "PRPOS" },
+            { "calInstance3": "RPOS" },
+            { "calInstance3": "SOG" },
+            { "calInstance3": "STW" },
+            { "calInstance3": "TWA" },
+            { "calInstance3": "TWS" },
+            { "calInstance3": "TWD" },
+            { "calInstance3": "WTemp" } ]
     },
     {
         "name": "calSmooth3",
@@ -885,11 +1003,25 @@
         "check": "checkMinMax",
         "min": 0,
         "max": 10,
-        "description": "Smoothing factor for data instance 3",
+        "description": "Smoothing factor [0..10]; 0 = no smoothing",
         "category": "OBP40 Calibrations",
         "capabilities": {
-            "obp40": "true"
-        }
+            "obp40":"true"
+        },
+        "condition": [
+            { "calInstance3": "AWA" },
+            { "calInstance3": "AWS" },
+            { "calInstance3": "COG" },
+            { "calInstance3": "DBT" },
+            { "calInstance3": "HDM" },
+            { "calInstance3": "PRPOS" },
+            { "calInstance3": "RPOS" },
+            { "calInstance3": "SOG" },
+            { "calInstance3": "STW" },
+            { "calInstance3": "TWA" },
+            { "calInstance3": "TWS" },
+            { "calInstance3": "TWD" },
+            { "calInstance3": "WTemp" } ]
     },
     {
         "name": "display",
@@ -3863,3 +3995,4 @@
         ]
     }
 ]
+
diff --git a/lib/obp60task/extra_task.py b/lib/obp60task/extra_task.py
new file mode 100644
index 0000000..28e9980
--- /dev/null
+++ b/lib/obp60task/extra_task.py
@@ -0,0 +1,30 @@
+# PlatformIO extra script for obp60task
+
+epdtype = "unknown"
+pcbvers = "unknown"
+for x in env["BUILD_FLAGS"]:
+    if x.startswith("-D HARDWARE_"):
+        pcbvers = x.split('_')[1]
+    if x.startswith("-D DISPLAY_"):
+        epdtype = x.split('_')[1]
+
+propfilename = os.path.join(env["PROJECT_LIBDEPS_DIR"], env["PIOENV"], "GxEPD2/library.properties")
+properties = {}
+with open(propfilename, 'r') as file:
+    for line in file:
+        match = re.match(r'^([^=]+)=(.*)$', line)
+        if match:
+            key = match.group(1).strip()
+            value = match.group(2).strip()
+            properties[key] = value
+
+gxepd2vers = "unknown"
+try:
+    if properties["name"] == "GxEPD2":
+        gxepd2vers = properties["version"]
+except:
+    pass
+
+env["CPPDEFINES"].extend([("BOARD", env["BOARD"]), ("EPDTYPE", epdtype), ("PCBVERS", pcbvers), ("GXEPD2VERS", gxepd2vers)])
+
+print("added hardware info to CPPDEFINES")
diff --git a/lib/obp60task/obp60task.cpp b/lib/obp60task/obp60task.cpp
index 505d89c..48ce978 100644
--- a/lib/obp60task/obp60task.cpp
+++ b/lib/obp60task/obp60task.cpp
@@ -531,7 +531,7 @@ void OBP60Task(GwApi *api){
     #endif
 
     #ifdef DISPLAY_GDEY042T81
-        getdisplay().init(115200, true, 2, false);  // Use this for Waveshare boards with "clever" reset circuit, 2ms reset pulse
+        getdisplay().init(115200, true, 2, false);  // Init for Waveshare boards with "clever" reset circuit, 2ms reset pulse
     #else
         getdisplay().init(115200);                  // Init for normal displays
     #endif
@@ -837,7 +837,7 @@ void OBP60Task(GwApi *api){
                     }
                   
                     // #9 or #10 Refresh display after a new page after 4s waiting time and if refresh is disabled
-                    if(refreshmode == true && (keyboardMessage == 9 || keyboardMessage == 10)){
+                    if(refreshmode == true && (keyboardMessage == 9 || keyboardMessage == 10 || keyboardMessage == 4 || keyboardMessage == 3)){
                         starttime4 = millis();
                         starttime2 = millis();      // Reset the timer for full display update
                         delayedDisplayUpdate = true;
@@ -873,12 +873,22 @@ void OBP60Task(GwApi *api){
                 starttime1 = millis();
                 starttime2 = millis();
                 getdisplay().setFullWindow();    // Set full update
-                getdisplay().nextPage();
-                if(fastrefresh == "false"){
+                if(fastrefresh == "true"){
+                    getdisplay().nextPage();                     // Full update
+                }
+                else{
                     getdisplay().fillScreen(commonData.fgcolor); // Clear display
+                    #ifdef DISPLAY_GDEY042T81
+                        getdisplay().init(115200, true, 2, false); // Init for Waveshare boards with "clever" reset circuit, 2ms reset pulse
+                    #else
+                        getdisplay().init(115200);               // Init for normal displays
+                    #endif
+                    getdisplay().firstPage();                    // Full update
                     getdisplay().nextPage();                     // Full update
-                    getdisplay().fillScreen(commonData.bgcolor); // Clear display
-                    getdisplay().nextPage();                     // Full update
+//                    getdisplay().setPartialWindow(0, 0, getdisplay().width(), getdisplay().height()); // Set partial update
+//                    getdisplay().fillScreen(commonData.bgcolor); // Clear display
+//                    getdisplay().nextPage();                     // Partial update
+//                    getdisplay().nextPage();                     // Partial update
                 }
                 delayedDisplayUpdate = false;
             }
@@ -890,12 +900,22 @@ void OBP60Task(GwApi *api){
                 starttime2 = millis();
                 LOG_DEBUG(GwLog::DEBUG,"E-Ink full refresh first 5 min");
                 getdisplay().setFullWindow();    // Set full update
-                getdisplay().nextPage();
-                if(fastrefresh == "false"){
+                if(fastrefresh == "true"){
+                    getdisplay().nextPage();                     // Full update
+                }
+                else{
                     getdisplay().fillScreen(commonData.fgcolor); // Clear display
+                    #ifdef DISPLAY_GDEY042T81
+                        getdisplay().init(115200, true, 2, false); // Init for Waveshare boards with "clever" reset circuit, 2ms reset pulse
+                    #else
+                        getdisplay().init(115200);               // Init for normal displays
+                    #endif
+                    getdisplay().firstPage();                    // Full update
                     getdisplay().nextPage();                     // Full update
-                    getdisplay().fillScreen(commonData.bgcolor); // Clear display
-                    getdisplay().nextPage();                     // Full update
+//                    getdisplay().setPartialWindow(0, 0, getdisplay().width(), getdisplay().height()); // Set partial update
+//                    getdisplay().fillScreen(commonData.bgcolor); // Clear display
+//                    getdisplay().nextPage();                     // Partial update
+//                    getdisplay().nextPage();                     // Partial update
                 }
             }
 
@@ -904,12 +924,22 @@ void OBP60Task(GwApi *api){
                 starttime2 = millis();
                 LOG_DEBUG(GwLog::DEBUG,"E-Ink full refresh");
                 getdisplay().setFullWindow();    // Set full update
-                getdisplay().nextPage();
-                if(fastrefresh == "false"){
+                if(fastrefresh == "true"){
+                    getdisplay().nextPage();                     // Full update
+                }
+                else{
                     getdisplay().fillScreen(commonData.fgcolor); // Clear display
+                    #ifdef DISPLAY_GDEY042T81
+                        getdisplay().init(115200, true, 2, false); // Init for Waveshare boards with "clever" reset circuit, 2ms reset pulse
+                    #else
+                        getdisplay().init(115200);               // Init for normal displays
+                    #endif
+                    getdisplay().firstPage();                    // Full update
                     getdisplay().nextPage();                     // Full update
-                    getdisplay().fillScreen(commonData.bgcolor); // Clear display
-                    getdisplay().nextPage();                     // Full update
+//                    getdisplay().setPartialWindow(0, 0, getdisplay().width(), getdisplay().height()); // Set partial update
+//                    getdisplay().fillScreen(commonData.bgcolor); // Clear display
+//                    getdisplay().nextPage();                     // Partial update
+//                    getdisplay().nextPage();                     // Partial update
                 }
             }        
                 
@@ -975,7 +1005,16 @@ void OBP60Task(GwApi *api){
                         if (pages[pageNumber].description && pages[pageNumber].description->header){
                             displayFooter(commonData);
                         }
-                        currentPage->displayPage(pages[pageNumber].parameters);
+                        int ret = currentPage->displayPage(pages[pageNumber].parameters);
+                        if (commonData.alarm.active) {
+                            displayAlarm(commonData);
+                        }
+                        if (ret & PAGE_UPDATE) {
+                            getdisplay().nextPage(); // Partial update (fast)
+                        }
+                        if (ret & PAGE_HIBERNATE) {
+                            getdisplay().hibernate();
+                        }
                     }
 
                 }
diff --git a/lib/obp60task/platformio.ini b/lib/obp60task/platformio.ini
index 21d56a5..074c140 100644
--- a/lib/obp60task/platformio.ini
+++ b/lib/obp60task/platformio.ini
@@ -40,7 +40,7 @@ lib_deps =
     paulstoffregen/OneWire@2.3.8
     milesburton/DallasTemperature@3.11.0
     signetica/SunRise@2.0.2
-    adafruit/Adafruit FRAM I2C@^2.0.3
+    adafruit/Adafruit FRAM I2C@2.0.3
 build_flags=
     #https://thingpulse.com/usb-settings-for-logging-with-the-esp32-s3-in-platformio/?srsltid=AfmBOopGskbkr4GoeVkNlFaZXe_zXkLceKF6Rn-tmoXABCeAR2vWsdHL
 #    -D CORE_DEBUG_LEVEL=1           #Debug level for CPU core via CDC (seral device)
@@ -91,7 +91,7 @@ lib_deps =
     paulstoffregen/OneWire@2.3.8
     milesburton/DallasTemperature@3.11.0
     signetica/SunRise@2.0.2
-    adafruit/Adafruit FRAM I2C@^2.0.3
+    adafruit/Adafruit FRAM I2C@2.0.3
 build_flags=
     -D DISABLE_DIAGNOSTIC_OUTPUT    #Disable diagnostic output for GxEPD2 lib
     -D BOARD_OBP40S3                #Board OBP40 with ESP32S3