diff --git a/src/RadioHead/RHReliableDatagram.cpp b/src/RadioHead/RHReliableDatagram.cpp
index f9bacd7..ef45d4c 100644
--- a/src/RadioHead/RHReliableDatagram.cpp
+++ b/src/RadioHead/RHReliableDatagram.cpp
@@ -16,7 +16,6 @@
 #ifdef MONGOOSE_OS
 /*
 static bool s_randomSeedCalled = false;
-
 static void randomSeed(unsigned long seed) {
     if(seed != 0) {
         srand(seed);
diff --git a/src/RadioHead/RadioHead.h b/src/RadioHead/RadioHead.h
index 7e8c5b8..7c8aac2 100644
--- a/src/RadioHead/RadioHead.h
+++ b/src/RadioHead/RadioHead.h
@@ -890,7 +890,9 @@
  #define YIELD yield();
 #elif (RH_PLATFORM == RH_PLATFORM_ESP8266)
 // ESP8266 also hash it
- #define YIELD yield();
+// freertos/include/freertos/task.h
+ // #include "freertos/task.h"
+ #define YIELD 
 #else
  #define YIELD
 #endif
diff --git a/src/main.cpp b/src/main.cpp
index 74a5532..5db36f0 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -70,7 +70,7 @@ static uint8_t getNormalTextHeight() { return Org_01.yAdvance; }
 static void setLargeTextSize(void) { display->setFont(&FreeMonoBold9pt7b); }
 //static uint8_t getLargeTextHeight() { return FreeMonoBold9pt7b.yAdvance; }
 //static uint8_t getLargeTextCharsPerLine() { return 12; }
-static void timer_cb(void *arg);
+static void updateDisplay_cb(void *arg);
 static void fastclockRF_receive_cb(void *arg);
 static void fastclockRF_send_cb(void *arg);
 static void initFastclockRF_cb(void *arg);
@@ -126,7 +126,6 @@ void setup(void) {
   LOG(LL_INFO, ("*** Setup started"));
   LOG(LL_INFO, ("*** Setting timer"));
   mgos_set_timer(2000 /* ms */, false /* repeat */, initDisplay_cb, NULL);
-  mgos_set_timer(5000 /* ms */, true /* repeat */, timer_cb, NULL);
   mgos_set_timer(7000 /* ms */, false /* repeat */, initFastclockRF_cb, NULL);
   LOG(LL_INFO, ("*** Setup done"));
 }
@@ -181,7 +180,7 @@ static void show_dashboard(int hour, int minute) {
 
 
 static long lastSentTimeTick = 0;
-static long msPerModelSecond = 1000; // 500 = real time
+static long msPerModelSecond = 50; // 500 = real time
 static struct clock_s {
   uint8_t day;
   uint8_t hour;
@@ -193,25 +192,29 @@ static struct clock_s {
 static void incrementClockByMilliseconds(int amount) {
   fastclock.millisecond += amount;
   if (fastclock.millisecond >= 1000) {
-    fastclock.millisecond -= 1000;
-    fastclock.second++;
+    int carryover = fastclock.millisecond / 1000;
+    fastclock.millisecond = fastclock.millisecond % 1000;
+    fastclock.second += carryover;
     if (fastclock.second >= 60) {
-      fastclock.second -= 60;
-      fastclock.minute++;
+      carryover = fastclock.second / 60;
+      fastclock.second = fastclock.second % 60;
+      fastclock.minute += carryover;
       if (fastclock.minute >= 60) {
-        fastclock.minute -= 60;
-        fastclock.hour++;
+        carryover = fastclock.minute / 60;
+        fastclock.minute = fastclock.minute % 60;
+        fastclock.hour += carryover;
         if (fastclock.hour >= 24) {
-          fastclock.hour -=24;
-          fastclock.day++;
+          carryover = fastclock.hour / 24;
+          fastclock.hour = fastclock.hour % 24;
+          fastclock.day += carryover;
           if (fastclock.day >= 7) {
-            fastclock.day -= 7;
+            fastclock.day = fastclock.day % 7;
           }
         }
       }
     }
   }
-  LOG(LL_INFO, ("*** new clock: %02d:%02d:%02d.%03d day %d", fastclock.hour, fastclock.minute, fastclock.second, fastclock.millisecond, fastclock.day));
+  LOG(LL_INFO, ("*** new clock: %02d:%02d:%02d.%03d day %d, incBy_ms=%d", fastclock.hour, fastclock.minute, fastclock.second, fastclock.millisecond, fastclock.day, amount));
 }
 
 static void fastclockRF_receive_cb(void *arg) {
@@ -226,7 +229,7 @@ static void fastclockRF_receive_cb(void *arg) {
     uint8_t from, to, id, flags;
 
     if (Datagram.recvfrom(buf, &len, &from, &to, &id, &flags)) {
-      LOG(LL_INFO, ("got request: %s", (char*)buf));
+      LOG(LL_INFO, ("got request: %d bytes, from=%d, to=%d, id=%d, msg=%02x %02x %02x %02x", len, from, to, id, buf[0], buf[1], buf[2], buf[3]));
     }
     else
     {
@@ -256,10 +259,11 @@ static void fastclockRF_send_cb(void *arg) {
 static void timeTick_cb(void *arg) {
   (void) arg;
   long newTimeTick = millis();
-  int fastclockTimeAdvance = (newTimeTick - lastSentTimeTick) / msPerModelSecond;
+  int fastclockTimeAdvance = (newTimeTick - lastSentTimeTick) * 1000 / msPerModelSecond;
 
   incrementClockByMilliseconds(fastclockTimeAdvance);
-  lastSentTimeTick += fastclockTimeAdvance * msPerModelSecond;
+  //lastSentTimeTick += fastclockTimeAdvance * msPerModelSecond/1000;
+  lastSentTimeTick = newTimeTick;
 }
 
 static void initFastclockRF_cb(void *arg) {
@@ -271,12 +275,13 @@ static void initFastclockRF_cb(void *arg) {
   fastclock.minute = 0;
   fastclock.second = 0;
   fastclock.millisecond = 0;
-  mgos_set_timer(200 /* ms */, true /* repeat */, fastclockRF_receive_cb, NULL);
+  mgos_set_timer(100 /* ms */, true /* repeat */, fastclockRF_receive_cb, NULL);
   mgos_set_timer(500 /* ms */, true /* repeat */, timeTick_cb, NULL);
-  mgos_set_timer(4000 /* ms */, true /* repeat */, fastclockRF_send_cb, NULL);
+  mgos_set_timer(3000 /* ms */, true /* repeat */, fastclockRF_send_cb, NULL);
+  mgos_set_timer(1000 /* ms */, true /* repeat */, updateDisplay_cb, NULL);
 }
 
-static void timer_cb(void *arg) {
+static void updateDisplay_cb(void *arg) {
   // static int hour = 0, minute = 0;
   show_dashboard(fastclock.hour, fastclock.minute);
   LOG(LL_INFO, ("%02d:%02d", fastclock.hour, fastclock.minute));