diff --git a/include/cyclic.h b/include/cyclic.h
index 829f9610..c4234c38 100644
--- a/include/cyclic.h
+++ b/include/cyclic.h
@@ -11,6 +11,9 @@
 #include "bme680mems.h"
 #endif
 
+extern Ticker housekeeper;
+
+void housekeeping(void);
 void doHousekeeping(void);
 uint64_t uptime(void);
 void reset_counters(void);
diff --git a/include/globals.h b/include/globals.h
index 72036687..0f232247 100644
--- a/include/globals.h
+++ b/include/globals.h
@@ -8,6 +8,7 @@
 #include <Time.h>
 #include <Timezone.h>
 #include <RtcDateTime.h>
+#include <Ticker.h>
 
 // std::set for unified array functions
 #include <set>
diff --git a/include/irqhandler.h b/include/irqhandler.h
index 64cb12fe..d818e138 100644
--- a/include/irqhandler.h
+++ b/include/irqhandler.h
@@ -5,6 +5,7 @@
 #define BUTTON_IRQ 0x02
 #define SENDCOUNTER_IRQ 0x04
 #define CYCLIC_IRQ 0x08
+#define TIMESYNC_IRQ 0x10
 
 #include "globals.h"
 #include "cyclic.h"
@@ -12,8 +13,6 @@
 #include "timekeeper.h"
 
 void irqHandler(void *pvParameters);
-void IRAM_ATTR homeCycleIRQ();
-void IRAM_ATTR SendCycleIRQ();
 
 #ifdef HAS_DISPLAY
 #include "display.h"
diff --git a/include/senddata.h b/include/senddata.h
index 82cf4581..e0eb4ecf 100644
--- a/include/senddata.h
+++ b/include/senddata.h
@@ -5,9 +5,12 @@
 #include "lorawan.h"
 #include "cyclic.h"
 
+extern Ticker sendcycler;
+
 void SendPayload(uint8_t port, sendprio_t prio);
 void sendCounter(void);
 void checkSendQueues(void);
 void flushQueues();
+void sendcycle(void);
 
 #endif // _SENDDATA_H_
\ No newline at end of file
diff --git a/include/timekeeper.h b/include/timekeeper.h
index 410d7dec..4714456a 100644
--- a/include/timekeeper.h
+++ b/include/timekeeper.h
@@ -4,6 +4,7 @@
 #include "globals.h"
 #include "rtctime.h"
 #include "TimeLib.h"
+#include "irqhandler.h"
 
 #ifdef HAS_GPS
 #include "gpsread.h"
@@ -15,11 +16,13 @@
 #endif
 
 extern const char timeSetSymbols[];
+extern Ticker timesyncer;
 
 void IRAM_ATTR CLOCKIRQ(void);
 void clock_init(void);
 void clock_loop(void *pvParameters);
 void timepulse_start(void);
+void timeSync(void);
 uint8_t timepulse_init(void);
 time_t timeIsValid(time_t const t);
 time_t timeProvider(void);
diff --git a/lib/microTime/src/Time.cpp b/lib/microTime/src/Time.cpp
index a4cd2d3a..4dd745ad 100644
--- a/lib/microTime/src/Time.cpp
+++ b/lib/microTime/src/Time.cpp
@@ -260,10 +260,9 @@ time_t sysUnsyncedTime = 0; // the time sysTime unadjusted by sync
 #endif
 
 #ifdef usePPS
-time_t SyncToPPS() {
+void SyncToPPS() {
   sysTime++;
   prevMicros = micros();
-  return sysTime;
 }
 #endif
 
diff --git a/lib/microTime/src/TimeLib.h b/lib/microTime/src/TimeLib.h
index 6ed36bc3..45efb398 100644
--- a/lib/microTime/src/TimeLib.h
+++ b/lib/microTime/src/TimeLib.h
@@ -154,7 +154,7 @@ time_t now(uint32_t &sysTimeMicros); // return the current time as seconds and
 
 #endif
 #ifdef usePPS
-time_t SyncToPPS();
+void SyncToPPS();
 #endif
 void setTime(time_t t);
 void setTime(int hr, int min, int sec, int day, int month, int yr);
diff --git a/src/configmanager.cpp b/src/configmanager.cpp
index dd4fdcbd..419246ae 100644
--- a/src/configmanager.cpp
+++ b/src/configmanager.cpp
@@ -19,7 +19,7 @@ void defaultConfig() {
   cfg.screenon = 1;           // 0=disabled, 1=enabled
   cfg.countermode = 0;        // 0=cyclic, 1=cumulative, 2=cyclic confirmed
   cfg.rssilimit = 0;          // threshold for rssilimiter, negative value!
-  cfg.sendcycle = SEND_SECS;  // payload send cycle [seconds/2]
+  cfg.sendcycle = SEND_CYCLE;  // payload send cycle [seconds/2]
   cfg.wifichancycle =
       WIFI_CHANNEL_SWITCH_INTERVAL; // wifi channel switch cycle [seconds/100]
   cfg.blescantime =
diff --git a/src/cyclic.cpp b/src/cyclic.cpp
index c9341f03..26f86eb4 100644
--- a/src/cyclic.cpp
+++ b/src/cyclic.cpp
@@ -7,6 +7,10 @@
 // Local logging tag
 static const char TAG[] = __FILE__;
 
+Ticker housekeeper;
+
+void housekeeping() { xTaskNotify(irqHandlerTask, CYCLIC_IRQ, eSetBits); }
+
 // do all housekeeping
 void doHousekeeping() {
 
diff --git a/src/gpsread.cpp b/src/gpsread.cpp
index ec900251..a41601c8 100644
--- a/src/gpsread.cpp
+++ b/src/gpsread.cpp
@@ -95,7 +95,7 @@ time_t get_gpstime(void) {
   if ((gps.time.age() < gpsDelay_ms) && (gps.time.isValid()) &&
       (gps.date.isValid())) {
 
-    ESP_LOGD(TAG, "GPS time age: %dms, is valid: %s, second: %d,",
+    ESP_LOGD(TAG, "GPS time age: %dms, is valid: %s, second: %d",
              gps.time.age(),
              (gps.time.isValid() && gps.date.isValid()) ? "yes" : "no",
              gps.time.second());
diff --git a/src/irqhandler.cpp b/src/irqhandler.cpp
index a2af0cf7..06bf82e7 100644
--- a/src/irqhandler.cpp
+++ b/src/irqhandler.cpp
@@ -34,6 +34,11 @@ void irqHandler(void *pvParameters) {
       doHousekeeping();
     }
 
+    // time to be synced?
+    if (InterruptStatus & TIMESYNC_IRQ) {
+      setTime(timeProvider());
+    }
+
     // is time to send the payload?
     if (InterruptStatus & SENDCOUNTER_IRQ)
       sendCounter();
@@ -44,16 +49,6 @@ void irqHandler(void *pvParameters) {
 // esp32 hardware timer triggered interrupt service routines
 // they notify the irq handler task
 
-void IRAM_ATTR homeCycleIRQ() {
-  xTaskNotifyFromISR(irqHandlerTask, CYCLIC_IRQ, eSetBits, NULL);
-  portYIELD_FROM_ISR();
-}
-
-void IRAM_ATTR SendCycleIRQ() {
-  xTaskNotifyFromISR(irqHandlerTask, SENDCOUNTER_IRQ, eSetBits, NULL);
-  portYIELD_FROM_ISR();
-}
-
 #ifdef HAS_DISPLAY
 void IRAM_ATTR DisplayIRQ() {
   xTaskNotifyFromISR(irqHandlerTask, DISPLAY_IRQ, eSetBits, NULL);
diff --git a/src/main.cpp b/src/main.cpp
index 547b2d25..345c54c2 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -313,16 +313,6 @@ void setup() {
   timerAlarmWrite(displaytimer, DISPLAYREFRESH_MS * 1000, true);
 #endif
 
-  // setup send cycle trigger IRQ using esp32 hardware timer 2
-  sendCycle = timerBegin(2, 8000, true);
-  timerAttachInterrupt(sendCycle, &SendCycleIRQ, true);
-  timerAlarmWrite(sendCycle, cfg.sendcycle * 2 * 10000, true);
-
-  // setup house keeping cycle trigger IRQ using esp32 hardware timer 3
-  homeCycle = timerBegin(3, 8000, true);
-  timerAttachInterrupt(homeCycle, &homeCycleIRQ, true);
-  timerAlarmWrite(homeCycle, HOMECYCLE * 10000, true);
-
 // show payload encoder
 #if PAYLOAD_ENCODER == 1
   strcat_P(features, " PLAIN");
@@ -358,19 +348,6 @@ void setup() {
 #endif
 #endif
 
-#if defined HAS_IF482 || defined HAS_DCF77
-  // start pps timepulse
-  ESP_LOGI(TAG, "Starting Timekeeper...");
-  assert(timepulse_init()); // setup timepulse
-  timepulse_start();
-#endif
-
-#ifdef TIME_SYNC_INTERVAL
-  // set time source and sync time
-  setSyncInterval(TIME_SYNC_INTERVAL * 60);
-  setSyncProvider(&timeProvider);
-#endif
-
   // start wifi in monitor mode and start channel rotation timer
   ESP_LOGI(TAG, "Starting Wifi...");
   wifi_sniffer_init();
@@ -406,12 +383,12 @@ void setup() {
 
   assert(irqHandlerTask != NULL); // has interrupt handler task started?
                                   // start timer triggered interrupts
-  ESP_LOGI(TAG, "Starting Interrupts...");
+  ESP_LOGI(TAG, "Starting Timers...");
 #ifdef HAS_DISPLAY
   timerAlarmEnable(displaytimer);
 #endif
-  timerAlarmEnable(sendCycle);
-  timerAlarmEnable(homeCycle);
+  sendcycler.attach(SEND_CYCLE, sendcycle);
+  housekeeper.attach(HOMECYCLE, housekeeping);
 
 // start button interrupt
 #ifdef HAS_BUTTON
@@ -422,7 +399,19 @@ void setup() {
 #endif
 #endif // HAS_BUTTON
 
+#ifdef TIME_SYNC_INTERVAL
+  // start pps timepulse
+  ESP_LOGI(TAG, "Starting Timekeeper...");
+  assert(timepulse_init()); // setup timepulse
+  timepulse_start();
+  timeSync(); // init systime
+  timesyncer.attach(TIME_SYNC_INTERVAL * 60, timeSync);
+#endif
+
 #if defined HAS_IF482 || defined HAS_DCF77
+#ifndef TIME_SYNC_INTERVAL
+#error you must define TIME_SNYC_INTERVAL in paxcounter.conf
+#endif
   ESP_LOGI(TAG, "Starting Clock Controller...");
   clock_init();
 #endif
diff --git a/src/paxcounter.conf b/src/paxcounter.conf
index 7e449439..c60d0ee9 100644
--- a/src/paxcounter.conf
+++ b/src/paxcounter.conf
@@ -10,7 +10,7 @@
 #define VERBOSE                         1       // comment out to silence the device, for mute use build option
 
 // Payload send cycle and encoding
-#define SEND_SECS                       30      // payload send cycle [seconds/2] -> 60 sec.
+#define SEND_CYCLE                       30      // payload send cycle [seconds/2] -> 60 sec.
 #define PAYLOAD_ENCODER                 2       // payload encoder: 1=Plain, 2=Packed, 3=Cayenne LPP dynamic, 4=Cayenne LPP packed
 
 // Set this to include BLE counting and vendor filter functions
diff --git a/src/payload.cpp b/src/payload.cpp
index 4e0d0d16..8326d8a8 100644
--- a/src/payload.cpp
+++ b/src/payload.cpp
@@ -456,7 +456,7 @@ void PayloadConvert::addButton(uint8_t value) {
 void PayloadConvert::addTime(time_t value) {
 #if (PAYLOAD_ENCODER == 4)
   uint32_t t = (uint32_t)value;
-  uint32_t tx_period = (uint32_t)SEND_SECS * 2;
+  uint32_t tx_period = (uint32_t)SEND_CYCLE * 2;
   buffer[cursor++] = 0x03; // set config mask to UTCTime + TXPeriod
   // UTCTime in seconds
   buffer[cursor++] = (byte)((t & 0xFF000000) >> 24);
diff --git a/src/senddata.cpp b/src/senddata.cpp
index 6886117a..54efd4d2 100644
--- a/src/senddata.cpp
+++ b/src/senddata.cpp
@@ -1,6 +1,10 @@
 // Basic Config
 #include "senddata.h"
 
+Ticker sendcycler;
+
+void sendcycle() { xTaskNotify(irqHandlerTask, SENDCOUNTER_IRQ, eSetBits); }
+
 // put data to send in RTos Queues used for transmit over channels Lora and SPI
 void SendPayload(uint8_t port, sendprio_t prio) {
 
diff --git a/src/timekeeper.cpp b/src/timekeeper.cpp
index 94ebbf00..1a06bf2b 100644
--- a/src/timekeeper.cpp
+++ b/src/timekeeper.cpp
@@ -6,12 +6,12 @@ static const char TAG[] = __FILE__;
 // symbol to display current time source
 const char timeSetSymbols[] = {'G', 'R', 'L', '?'};
 
-getExternalTime TimeSourcePtr; // pointer to time source function
+Ticker timesyncer;
+
+void timeSync() { xTaskNotify(irqHandlerTask, TIMESYNC_IRQ, eSetBits); }
 
 time_t timeProvider(void) {
 
-  ESP_LOGD(TAG, "time synched");
-
   time_t t = 0;
 
 #ifdef HAS_GPS
@@ -33,7 +33,7 @@ time_t timeProvider(void) {
   }
 #endif
 
-// kick off asychron lora sync if we have
+// kick off asychronous lora sync if we have
 #if defined HAS_LORA && defined TIME_SYNC_LORA
   LMIC_requestNetworkTime(user_request_network_time_callback, &userUTCTime);
 #endif
@@ -101,11 +101,11 @@ void timepulse_start(void) {
 void IRAM_ATTR CLOCKIRQ(void) {
 
   BaseType_t xHigherPriorityTaskWoken;
-  time_t t = SyncToPPS(); // calibrates UTC systime, see Time.h
+  SyncToPPS(); // calibrates UTC systime, see Time.h
   xHigherPriorityTaskWoken = pdFALSE;
 
   if (ClockTask != NULL)
-    xTaskNotifyFromISR(ClockTask, uint32_t(t), eSetBits,
+    xTaskNotifyFromISR(ClockTask, uint32_t(now()), eSetBits,
                        &xHigherPriorityTaskWoken);
 
 #if defined GPS_INT || defined RTC_INT