diff --git a/src/app.cpp b/src/app.cpp
index 443e7fcb..4fff7bbb 100644
--- a/src/app.cpp
+++ b/src/app.cpp
@@ -1,5 +1,5 @@
 //-----------------------------------------------------------------------------
-// 2022 Ahoy, https://www.mikrocontroller.net/topic/525778
+// 2022 Ahoy, https://ahoydtu.de
 // Creative Commons - http://creativecommons.org/licenses/by-nc-sa/3.0/de/
 //-----------------------------------------------------------------------------
 
@@ -21,17 +21,17 @@ void app::setup(uint32_t timeout) {
     resetSystem();
     mSettings.setup();
     mSettings.getPtr(mConfig);
+    DPRINTLN(DBG_INFO, F("Settings valid: ") + String((mSettings.getValid()) ? F("true") : F("false")));
 
     mWifi = new ahoywifi(mConfig);
 
     mSys = new HmSystemType();
     mSys->enableDebug();
-    mShouldReboot = false;
+    mSys->setup(mConfig->nrf.amplifierPower, mConfig->nrf.pinIrq, mConfig->nrf.pinCe, mConfig->nrf.pinCs);
+    mSys->addInverters(&mConfig->inst);
 
     mWifi->setup(timeout, mSettings.getValid());
 
-    mSys->setup(mConfig->nrf.amplifierPower, mConfig->nrf.pinIrq, mConfig->nrf.pinCe, mConfig->nrf.pinCs);
-    mSys->addInverters(&mConfig->inst);
     mPayload.setup(mSys);
     mPayload.enableSerialDebug(mConfig->serial.debug);
 #ifndef AP_ONLY
@@ -41,12 +41,11 @@ void app::setup(uint32_t timeout) {
 #endif
     setupLed();
 
+    mWeb = new web(this, mConfig, &mStat, mVersion);
+    mWeb->setup();
+    mWeb->setProtection(strlen(mConfig->sys.adminPwd) != 0);
 
-    mWebInst = new web(this, mConfig, &mStat, mVersion);
-    mWebInst->setup();
-    mWebInst->setProtection(strlen(mConfig->sys.adminPwd) != 0);
-    DPRINTLN(DBG_INFO, F("Settings valid: ") + String((mSettings.getValid()) ? F("true") : F("false")));
-
+    addListener(EVERY_MIN, std::bind(&PubSerialType::tickerMinute, &mPubSerial));
 }
 
 //-----------------------------------------------------------------------------
@@ -54,7 +53,7 @@ void app::loop(void) {
     DPRINTLN(DBG_VERBOSE, F("app::loop"));
 
     bool apActive = mWifi->loop();
-    mWebInst->loop();
+    mWeb->loop();
 
     if (millis() - mPrevMillis >= 1000) {
         mPrevMillis += 1000;
@@ -62,7 +61,7 @@ void app::loop(void) {
         if (0 != mUtcTimestamp)
             mUtcTimestamp++;
 
-        mWebInst->tickSecond();
+        mWeb->tickSecond();
 
         if (mShouldReboot) {
             DPRINTLN(DBG_INFO, F("Rebooting..."));
@@ -98,12 +97,10 @@ void app::loop(void) {
             packet_t *p = mSys->BufCtrl.getBack();
 
             if (mSys->Radio.checkPaketCrc(p->packet, &len, p->rxCh)) {
-                // process buffer only on first occurrence
                 if (mConfig->serial.debug) {
                     DPRINT(DBG_INFO, "RX " + String(len) + "B Ch" + String(p->rxCh) + " | ");
                     mSys->Radio.dumpBuf(NULL, p->packet, len);
                 }
-
                 mStat.frmCnt++;
 
                 if (0 != len)
@@ -129,30 +126,7 @@ void app::loop(void) {
             mLatestSunTimestamp = mUtcTimestamp;
         }
 
-        if (mConfig->serial.showIv) {
-            if (++mSerialTicker >= mConfig->serial.interval) {
-                mSerialTicker = 0;
-                char topic[30], val[10];
-                for (uint8_t id = 0; id < mSys->getNumInverters(); id++) {
-                    Inverter<> *iv = mSys->getInverterByPos(id);
-                    if (NULL != iv) {
-                        record_t<> *rec = iv->getRecordStruct(RealTimeRunData_Debug);
-                        if (iv->isAvailable(mUtcTimestamp, rec)) {
-                            DPRINTLN(DBG_INFO, "Inverter: " + String(id));
-                            for (uint8_t i = 0; i < rec->length; i++) {
-                                if (0.0f != iv->getValue(i, rec)) {
-                                    snprintf(topic, 30, "%s/ch%d/%s", iv->config->name, rec->assign[i].ch, iv->getFieldName(i, rec));
-                                    snprintf(val, 10, "%.3f %s", iv->getValue(i, rec), iv->getUnit(i, rec));
-                                    DPRINTLN(DBG_INFO, String(topic) + ": " + String(val));
-                                }
-                                yield();
-                            }
-                            DPRINTLN(DBG_INFO, "");
-                        }
-                    }
-                }
-            }
-        }
+
 
         if (++mSendTicker >= mConfig->nrf.sendInterval) {
             mSendTicker = 0;
@@ -251,6 +225,7 @@ void app::getAvailNetworks(JsonObject obj) {
 void app::resetSystem(void) {
     snprintf(mVersion, 12, "%d.%d.%d", VERSION_MAJOR, VERSION_MINOR, VERSION_PATCH);
 
+    mShouldReboot = false;
     mUptimeSecs = 0;
     mPrevMillis = 0;
     mUpdateNtp = false;
@@ -268,7 +243,6 @@ void app::resetSystem(void) {
     mHeapStatCnt = 0;
 
     mSendTicker = 0xffff;
-    mSerialTicker = 0xffff;
     mMqttActive = false;
 
     mTicker = 0;
diff --git a/src/app.h b/src/app.h
index 640c94d5..5bbf6e04 100644
--- a/src/app.h
+++ b/src/app.h
@@ -1,5 +1,5 @@
 //-----------------------------------------------------------------------------
-// 2022 Ahoy, https://www.mikrocontroller.net/topic/525778
+// 2022 Ahoy, https://ahoydtu.de
 // Creative Commons - http://creativecommons.org/licenses/by-nc-sa/3.0/de/
 //-----------------------------------------------------------------------------
 
@@ -16,6 +16,7 @@
 #include "defines.h"
 #include "utils/crc.h"
 #include "utils/ahoyTimer.h"
+#include "utils/scheduler.h"
 
 #include "hm/CircularBuffer.h"
 #include "hm/hmSystem.h"
@@ -24,6 +25,8 @@
 #include "web/mqtt.h"
 #include "web/web.h"
 
+#include "publisher/pubSerial.h"
+
 // convert degrees and radians for sun calculation
 #define SIN(x) (sin(radians(x)))
 #define COS(x) (cos(radians(x)))
@@ -31,15 +34,16 @@
 #define ACOS(x) (degrees(acos(x)))
 
 typedef HmSystem<MAX_NUM_INVERTERS> HmSystemType;
+typedef Payload<HmSystemType> PayloadType;
 typedef mqtt<HmSystemType> MqttType;
-typedef payload<HmSystemType> PayloadType;
+typedef PubSerial<HmSystemType> PubSerialType;
 
 class ahoywifi;
 class web;
 
-class app {
+class app : public ah::Scheduler {
     public:
-        app() {}
+        app() : ah::Scheduler() {}
         ~app() {}
 
         void setup(uint32_t timeout);
@@ -175,9 +179,11 @@ class app {
         bool mShowRebootRequest;
 
         ahoywifi *mWifi;
-        web *mWebInst;
-        char mVersion[12];
+        web *mWeb;
         PayloadType mPayload;
+        PubSerialType mPubSerial;
+
+        char mVersion[12];
         settings mSettings;
         settings_t *mConfig;
 
@@ -194,9 +200,6 @@ class app {
         MqttType mMqtt;
         bool mMqttActive;
 
-        // serial
-        uint16_t mSerialTicker;
-
         // sun
         int32_t mCalculatedTimezoneOffset;
         uint32_t mSunrise, mSunset;
diff --git a/src/hm/payload.h b/src/hm/payload.h
index 3905ce04..d67445b0 100644
--- a/src/hm/payload.h
+++ b/src/hm/payload.h
@@ -29,9 +29,9 @@ typedef std::function<void(uint8_t)> payloadListenerType;
 
 
 template<class HMSYSTEM>
-class payload : public Handler<payloadListenerType> {
+class Payload : public Handler<payloadListenerType> {
     public:
-        payload() : Handler() {}
+        Payload() : Handler() {}
 
         void setup(HMSYSTEM *sys) {
             mSys = sys;
diff --git a/src/publisher/pubSerial.h b/src/publisher/pubSerial.h
new file mode 100644
index 00000000..1954409b
--- /dev/null
+++ b/src/publisher/pubSerial.h
@@ -0,0 +1,59 @@
+//-----------------------------------------------------------------------------
+// 2022 Ahoy, https://ahoydtu.de
+// Creative Commons - http://creativecommons.org/licenses/by-nc-sa/3.0/de/
+//-----------------------------------------------------------------------------
+
+#ifndef __PUB_SERIAL_H__
+#define __PUB_SERIAL_H__
+
+#include "../utils/dbg.h"
+#include "../config/settings.h"
+#include "../hm/hmSystem.h"
+
+template<class HMSYSTEM>
+class PubSerial {
+    public:
+        PubSerial() {}
+
+        void setup(settings_t *cfg, HMSYSTEM *sys, uint32_t *utcTs) {
+            mCfg = cfg;
+            mSys = sys;
+            mUtcTimestamp = utcTs;
+        }
+
+        void tickerMinute(void) {
+            if(++mTick >= mCfg->serial.interval) {
+                mTick = 0;
+                if (mCfg->serial.showIv) {
+                    char topic[30], val[10];
+                    for (uint8_t id = 0; id < mSys->getNumInverters(); id++) {
+                        Inverter<> *iv = mSys->getInverterByPos(id);
+                        if (NULL != iv) {
+                            record_t<> *rec = iv->getRecordStruct(RealTimeRunData_Debug);
+                            if (iv->isAvailable(*mUtcTimestamp, rec)) {
+                                DPRINTLN(DBG_INFO, F("Inverter: ") + String(id));
+                                for (uint8_t i = 0; i < rec->length; i++) {
+                                    if (0.0f != iv->getValue(i, rec)) {
+                                        snprintf(topic, 30, "%s/ch%d/%s", iv->config->name, rec->assign[i].ch, iv->getFieldName(i, rec));
+                                        snprintf(val, 10, "%.3f %s", iv->getValue(i, rec), iv->getUnit(i, rec));
+                                        DPRINTLN(DBG_INFO, String(topic) + ": " + String(val));
+                                    }
+                                    yield();
+                                }
+                                DPRINTLN(DBG_INFO, "");
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+    private:
+        settings_t *mCfg;
+        HMSYSTEM *mSys;
+        uint8_t mTick;
+        uint32_t *mUtcTimestamp;
+};
+
+
+#endif /*__PUB_SERIAL_H__*/
diff --git a/src/web/mqtt.h b/src/web/mqtt.h
index 8402599b..3dbd38ba 100644
--- a/src/web/mqtt.h
+++ b/src/web/mqtt.h
@@ -12,11 +12,6 @@
     #include <WiFi.h>
 #endif
 
-#if defined(ESP32) && defined(F)
-  #undef F
-  #define F(sl) (sl)
-#endif
-
 #include "../utils/dbg.h"
 #include "../utils/ahoyTimer.h"
 #include "../config/config.h"