Index: webserver/example/EnergyMeters/Source/EnergyMeters/Meters.c
===================================================================
--- webserver/example/EnergyMeters/Source/EnergyMeters/Meters.c (revision 22)
+++ webserver/example/EnergyMeters/Source/EnergyMeters/Meters.c (revision 30)
@@ -120,6 +120,7 @@
   meterItems[METER_INDEX_GAS].timeLastTick = getEpochTimeWithMs(); /* when did the last tick occur? epoch (seconds) */
   meterItems[METER_INDEX_GAS].timeBeforeLastTick = getEpochTimeWithMs(); /* when did the tick before last tick occur? epoch (seconds) */
-  meterItems[METER_INDEX_GAS].valueLastTick = 0;   /* what value did we have at the last tick? */
-  meterItems[METER_INDEX_GAS].valueBeforeLastTick = 1;   /* what value did we have at the tick before the last tick? */
+  meterItems[METER_INDEX_GAS].valueLastTick = 1;   /* what value did we have at the last tick? */
+  meterItems[METER_INDEX_GAS].currentValue = 1; /* same: start value of the meter */
+  meterItems[METER_INDEX_GAS].valueBeforeLastTick = 0;   /* what value did we have at the tick before the last tick? */
 
 }
Index: webserver/example/EnergyMeters/Source/EnergyMeters/Meters_ISRs.c
===================================================================
--- webserver/example/EnergyMeters/Source/EnergyMeters/Meters_ISRs.c (revision 22)
+++ webserver/example/EnergyMeters/Source/EnergyMeters/Meters_ISRs.c (revision 30)
@@ -61,8 +61,31 @@
 void handleGasMeterTick(void)
 {
-  meterItems[METER_INDEX_GAS].timeBeforeLastTick = meterItems[METER_INDEX_GAS].timeLastTick;     /* when did the tick before the last tick occur? */
-  meterItems[METER_INDEX_GAS].timeLastTick = getEpochTimeWithMs(); /* when did the last tick occur? epoch (seconds) */
-  meterItems[METER_INDEX_GAS].valueLastTick = 0;   /* what value did we have at the last tick? */
-  meterItems[METER_INDEX_GAS].valueBeforeLastTick = 1;   /* what value did we have at the tick before the last tick? */
+  unsigned long long currentTime = getEpochTimeWithMs(); /* current epoch time with ms in ms */
+  if (  currentTime > (meterItems[METER_INDEX_GAS].timeLastTick + DEBOUNCE_TICK_THRESHOLD_MS) )
+  {
+    /* we have a tick that is not a bounce */
+    meterItems[METER_INDEX_GAS].currentValue++; /* one more tick. always increase the counter */
+
+    /* now check if we should accumulate the ticks for this time period so we leave the new data item available long
+     * enough on the web page to be read by the server 
+     */
+    if (  currentTime > ((unsigned long long)meterItems[METER_INDEX_GAS].timeLastTick + ((unsigned long long)ACCUMULATE_TICK_THRESHOLD_SEC * (unsigned long long)1000)) )
+    {
+      /* if the last meter tick happened longer than DEBOUNCE_TICK_THRESHOLD_MS ago (i.e. the switch did not just bounce) */
+      meterItems[METER_INDEX_GAS].timeBeforeLastTick = meterItems[METER_INDEX_GAS].timeLastTick;     /* when did the tick before the last tick occur? (epoch in milliseconds) */
+      meterItems[METER_INDEX_GAS].timeLastTick = currentTime; /* when did the last tick occur? (epoch in milliseconds) */
+      meterItems[METER_INDEX_GAS].valueBeforeLastTick = meterItems[METER_INDEX_GAS].valueLastTick;   /* what value did we have at the tick before the last tick? */
+      meterItems[METER_INDEX_GAS].valueLastTick = meterItems[METER_INDEX_GAS].currentValue;   /* what value did we have at the last tick? now one more! */
+      /* at present, valueLastTick and currentValue are the same. This might be different for future versions. */
+    }
+    else
+    {
+      ; /* nothing to do, curentValue was increased already above */
+    }
+  }
+  else
+  {
+    ; /* we bounced, ignore this tick */
+  }
 }
 
Index: webserver/example/EnergyMeters/Source/EnergyMeters/MetersIncludes.h
===================================================================
--- webserver/example/EnergyMeters/Source/EnergyMeters/MetersIncludes.h (revision 22)
+++ webserver/example/EnergyMeters/Source/EnergyMeters/MetersIncludes.h (revision 30)
@@ -7,4 +7,6 @@
 #define METER_INDEX_GAS 0 /* index of the gas meter data */
 
+#define DEBOUNCE_TICK_THRESHOLD_MS 50 /* when two ticks are less than this time period apart, the second tick is ignored (debouncing) */
+#define ACCUMULATE_TICK_THRESHOLD_SEC 30 /* how long (seconds) should the ticks be accumulated before a new data item is created? */
 
 typedef struct
@@ -15,4 +17,5 @@
   portLONG valueLastTick;   /* what value did we have at the last tick? */
   portLONG valueBeforeLastTick;   /* what value did we have at the tick before the last tick? */
+  portLONG currentValue;  /* the value of the meter. gets incremented by the ISR */
 } meterItem;