diff --git a/src/log.h b/src/log.h
new file mode 100644
index 0000000..40316d2
--- /dev/null
+++ b/src/log.h
@@ -0,0 +1,72 @@
+#include <stdio.h>
+#include <time.h>
+/**
+ * 0: LOG_TRACE
+ * 1: LOG_DEBUG
+ * 2: LOG_INFO
+ * 3: LOG_WARN
+ * 4: LOG_ERROR
+ * 5: LOG_CRITICAL
+ * 6: LOG_NONE
+ */
+#define DEBUG 0
+
+#define timeStrRollSize 5
+char timeStr[timeStrRollSize][20];
+unsigned char timeStrI = 0;
+char *timeToStr(time_t t){
+  unsigned char i = timeStrI;
+  timeStrI++;
+  if(timeStrI == timeStrRollSize)
+    timeStrI = 0;
+  if(t == 0)
+    t = time(NULL);
+  struct tm T = *localtime(&t);
+  sprintf(&timeStr[i][0], "%04d-%02d-%02d %2d:%02d:%02d", 
+    T.tm_year+1900, T.tm_mon+1, T.tm_mday, T.tm_hour, T.tm_min, T.tm_sec);
+  return &timeStr[i][0];
+}
+char *timeToStr2(struct tm T){
+  unsigned char i = timeStrI;
+  timeStrI++;
+  if(timeStrI == timeStrRollSize)
+    timeStrI = 0;
+  sprintf(&timeStr[i][0], "%04d-%02d-%02d %2d:%02d:%02d", 
+    T.tm_year+1900, T.tm_mon+1, T.tm_mday, T.tm_hour, T.tm_min, T.tm_sec);
+  return &timeStr[i][0];
+}
+
+#define Log(ll, msg, ...) printf("%s - " ll ": " msg "\n", timeToStr(0), __VA_ARGS__)
+
+#if DEBUG <= 0
+#define logTrace(...) Log("TRACE", __VA_ARGS__)
+#else
+#define logTrace(...)
+#endif
+#if DEBUG <= 1
+#define logDebug(...) Log("DEBUG", __VA_ARGS__)
+#else
+#define logDebug(...)
+#endif
+#if DEBUG <= 2
+#define logInfo(...) Log("INFO", __VA_ARGS__)
+#else
+#define logInfo(...)
+#endif
+#if DEBUG <= 3
+#define logWarn(...) Log("WARN", __VA_ARGS__)
+#else
+#define logWarn(...)
+#endif
+#if DEBUG <= 4
+#define logError(...) Log("ERROR", __VA_ARGS__)
+#else
+#define logError(...)
+#endif
+#if DEBUG <= 5
+#define logCritical(...) Log("CRITICAL", __VA_ARGS__)
+#else
+#define logCritical(...)
+#endif
+
+
diff --git a/src/main.c b/src/main.c
index d4e46a9..cb8fdbe 100644
--- a/src/main.c
+++ b/src/main.c
@@ -4,124 +4,141 @@
 #include <time.h>
 #include <dirent.h>
 #include <pthread.h>
+#include <unistd.h>
 
-#define DEBUG
+#include "log.h"
+
+#define MAX_NUMBER_OF_SCRIPTS 128
 
 typedef struct {
   uint32_t scheduler[5];
   uint32_t next;
   char filename[128];
 } Script_t;
-Script_t *Scripts[128];
+Script_t Scripts[MAX_NUMBER_OF_SCRIPTS];
 
-#ifdef DEBUG
-char timestr[19];
-char *timeToStr(time_t t){
-  struct tm T = *localtime(&t);
-  sprintf(&timestr[0], "%04d-%02d-%02d %d:%02d:%02d", T.tm_year+1900, T.tm_mon+1, T.tm_mday, T.tm_hour, T.tm_min, T.tm_sec);
-  return &timestr[0];
-}
-char *timeToStr2(struct tm T){
-  sprintf(&timestr[0], "%04d-%02d-%02d %d:%02d:%02d", T.tm_year+1900, T.tm_mon+1, T.tm_mday, T.tm_hour, T.tm_min, T.tm_sec);
-  return &timestr[0];
-}
-#endif
-
-uint32_t getNextTrigger(Script_t *script){
-  uint8_t daysInMouth[] = {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
-  time_t ti = time(NULL);
+uint8_t DaysInMouth[] = {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
+struct tm getNextTriggerDay(Script_t *script, time_t ti){
   struct tm t = *localtime(&ti);
   while(1){
-    printf("mounth: %d (%s), mask: 0x%x\n", t.tm_mon, timeToStr2(t), script->scheduler[3]);
+    logTrace("mounth: %2d (%s), mask: 0x%08x", t.tm_mon, timeToStr2(t), script->scheduler[3]);
     if(1 << (t.tm_mon) & script->scheduler[3]){
       while(1){
-        printf("day: %d (%s), mask: 0x%x\n", t.tm_mday, timeToStr2(t), script->scheduler[2]);
+        logTrace("day   : %2d (%s), mask: 0x%08x", t.tm_mday, timeToStr2(t), script->scheduler[2]);
         if(1 << (t.tm_mday) & script->scheduler[2]){
-          while(1){
-            printf("hour: %d (%s), mask: 0x%x\n", t.tm_hour, timeToStr2(t), script->scheduler[1]);
-            if(1 << (t.tm_hour) & script->scheduler[1]){
-              while(1){
-                printf("minute: %d (%s), mask: 0x%x\n", t.tm_min, timeToStr2(t), script->scheduler[1]);
-                if(1 << (t.tm_hour) & script->scheduler[1]){
-                  return mktime(&t);
-                }
-                t.tm_min++;
-                if(t.tm_min > 60){
-                  t.tm_min = 0;
-                  t.tm_sec = 0;
-                  break;
-                }
-              }
-            }
-            t.tm_hour++;
-            if(t.tm_hour > 23){
-              t.tm_hour = 0;
-              t.tm_min = 0;
-              t.tm_sec = 0;
-              break;
-            }
+          time_t ti = mktime(&t);
+          t = *localtime(&ti); // get the weekday of the date
+          logTrace("wekday: %2d (%s), mask: 0x%08x", t.tm_wday, timeToStr2(t), script->scheduler[4]);
+          if(1 << (t.tm_wday) & script->scheduler[4]){
+            return t;
           }
         }
         t.tm_mday++;
-        if(t.tm_mday > daysInMouth[t.tm_mon]){
+        t.tm_hour = 0;
+        t.tm_min = 0;
+        if(t.tm_mday > DaysInMouth[t.tm_mon]){
           t.tm_mday = 1;
-          t.tm_hour = 0;
-          t.tm_min = 0;
-          t.tm_sec = 0;
           break;
         }
       }
     }
     t.tm_mon++;
+    t.tm_mday = 1;
+    t.tm_hour = 0;
+    t.tm_min = 0;
     if(t.tm_mon >= 12){
       t.tm_year++;
+      if(t.tm_year-1 > localtime(&ti)->tm_year){
+        time_t zero = 0;
+        return *localtime(&zero); // no posible time this and next year (t.tm_min is just 0, it needs a pointer)
+      }
       t.tm_mon = 0;
-      t.tm_mday = 1;
-      t.tm_hour = 0;
+    }
+  }
+}
+
+time_t getNextTrigger(Script_t *script, time_t startTime){
+  logTrace("Search time of next trigger for '%s'", script->filename);
+  struct tm t = getNextTriggerDay(script, (startTime == 0) ? time(NULL) : startTime);
+  if(t.tm_year == 70){
+    logError("no time found to run this or next year for '%s'", script->filename);
+    return 0;
+  }
+  if(t.tm_sec != 0){
+    t.tm_sec = 0;
+    if(t.tm_min = 59){
       t.tm_min = 0;
-      t.tm_sec = 0;
+      t.tm_hour++;
+    }else{
+      t.tm_min++;
+    }
+  }
+  while(1){
+    logTrace("hour  : %2d (%s), mask: 0x%08x", t.tm_hour, timeToStr2(t), script->scheduler[1]);
+    if(1 << (t.tm_hour) & script->scheduler[1]){
+      while(1){
+        if(t.tm_min%1 == 0)
+          t.tm_min + 1; // make minut even
+        logTrace("minute: %2d (%s), mask: 0x%08x", t.tm_min, timeToStr2(t), script->scheduler[0]);
+        if(1 << (t.tm_min/2) & script->scheduler[0]){
+          logTrace("next trigger found for '%s': %s", script->filename, timeToStr2(t));
+          return mktime(&t);
+        }
+        t.tm_min+=2;
+        if(t.tm_min >= 60){
+          t.tm_min = 0;
+          break;
+        }
+      }
+    }
+    t.tm_hour++;
+    t.tm_min = 0;
+    if(t.tm_hour > 23){
+      if(startTime != 0){
+        logError("something went wrong when getting next trigger time for '%s'", script->filename);
+        return 0;
+      }else{
+        logError("trigger was today. rerun to get the real next.%s", "");
+        // set time the the start of the next day
+        t.tm_sec = 0;
+        t.tm_min = 0;
+        t.tm_hour = 0;
+        if(t.tm_mday == DaysInMouth[t.tm_mon]){
+          t.tm_mday = 1;
+          if(t.tm_mon == 11){
+            t.tm_mon = 0;
+            t.tm_year++;
+          }else
+            t.tm_mon++;
+        }else
+          t.tm_mday++;
+        // get the date agen bedouse today is no next run anymore
+        return getNextTrigger(script, mktime(&t));
+      }
     }
   }
 }
 
 //TODO: add devide option
 //TOOD: add full file name instad of only extention
-Script_t *getSchedule(char *str){
+void getSchedule(Script_t *script, char *str){
   uint8_t is = 0;
-  Script_t scit;
-  scit.scheduler[0] = 
-    scit.scheduler[1] = 
-    scit.scheduler[2] = 
-    scit.scheduler[3] = 
-    scit.scheduler[4] = 0;
+  script->scheduler[0] = 
+    script->scheduler[1] = 
+    script->scheduler[2] = 
+    script->scheduler[3] = 
+    script->scheduler[4] = 0;
   int8_t cmd[3];
   cmd[0] = cmd[1] = cmd[2] = 0;
 
+  logTrace("get the scheduler for '%s'", str);
+
   // read the filename
   uint8_t ic;
   for(ic=0; ic<strlen(str); ic++){
     switch ((char)*(str+ic)){
-      case ' ':
-        switch (cmd[0])
-        {
-          case '-':
-            // set all bits in the range
-            for(uint8_t i=cmd[2]; i>cmd[1]; i--){
-              scit.scheduler[is] |= 1<<i;
-            }
-            break;
-
-          default:
-            // set the bit from last number from the list
-            scit.scheduler[is] |= (is == 0) ? 1<<(cmd[1]/2) : 1<<cmd[1];
-            break;
-        }
-        is++;
-        cmd[0] = 0;
-        cmd[1] = 0;
-        break;
       case '*': // set all bits
-        scit.scheduler[is] = ~0;
+        script->scheduler[is] = ~0;
         break;
       case '0' ... '9': // read a number
         if(cmd[0] == '-'){ // the second numer of a range should not be overritten
@@ -134,7 +151,7 @@ Script_t *getSchedule(char *str){
         break;
       case ',': // list of times
         cmd[0] = ',';
-        scit.scheduler[is] |= (is == 0) ? 1<<(cmd[1]/2) : 1<<cmd[1];
+        script->scheduler[is] |= (is == 0) ? 1<<(cmd[1]/2) : 1<<cmd[1];
         cmd[1] = 0;
         break;
       case '-': // range
@@ -142,6 +159,25 @@ Script_t *getSchedule(char *str){
           cmd[1] /= 2;
         cmd[0] = '-';
         break;
+      default:
+        switch (cmd[0])
+        {
+          case '-':
+            // set all bits in the range
+            for(uint8_t i=cmd[2]; i>cmd[1]; i--){
+              script->scheduler[is] |= 1<<i;
+            }
+            break;
+
+          default:
+            // set the bit from last number from the list
+            script->scheduler[is] |= (is == 0) ? 1<<(cmd[1]/2) : 1<<cmd[1];
+            break;
+        }
+        is++;
+        cmd[0] = 0;
+        cmd[1] = 0;
+        break;
     }
     if((char)*(str+ic) == '.'){
       break;
@@ -151,25 +187,27 @@ Script_t *getSchedule(char *str){
   }
 
   // copy filename
-  memcpy(&scit.filename, str, strlen(str)+1);
+  memcpy(&script->filename, str, strlen(str)+1);
+
+  logInfo("scheduler: [0x%08x, 0x%08x, 0x%08x, 0x%08x, 0x%08x]",
+    script->scheduler[0],
+    script->scheduler[1],
+    script->scheduler[2],
+    script->scheduler[3],
+    script->scheduler[4]
+  );
 
   // get next time to trigger
-  scit.next = getNextTrigger(&scit);
+  script->next = getNextTrigger(script, 0);
 
-#ifdef DEBUG
-  printf("scheduler: [\n  0x%08x\n  0x%08x\n  0x%08x\n  0x%08x\n  0x%08x\n]\nnext trigger: %s\nfilename: %s\n", 
-    scit.scheduler[0], 
-    scit.scheduler[1], 
-    scit.scheduler[2], 
-    scit.scheduler[3], 
-    scit.scheduler[4],
-    timeToStr(scit.next),
-    scit.filename
+  logInfo("add script '%s' (next trigger: %s)",
+    script->filename,
+    (script->next == 0) ? "(none)" : timeToStr(script->next)
   );
-#endif
 }
 
 void getScripts(){
+  logTrace("open script directory%s", "");
   DIR *ScriptDir = opendir("./scripts");
   uint8_t i=0;
   while(i < 128){
@@ -181,12 +219,34 @@ void getScripts(){
     //TODO: add simbolic link suport
     if(script->d_type != DT_REG)
       continue;
-
-    Scripts[i] = getSchedule(script->d_name);
+    #if DEBUG == 0
+    printf("\n");
+    logTrace("found file '%s'", script->d_name);
+    #endif
+    getSchedule(&Scripts[i], script->d_name);
     i++;
   }
 }
 
 void main(){
+  for(uint8_t i=MAX_NUMBER_OF_SCRIPTS; i > 0; i--){
+    Scripts[i].next = 0;
+  }
   getScripts();
-}
\ No newline at end of file
+  time_t nextScriptTrigger = time(NULL) + 30 * 24 * 60 * 60;
+  Script_t *scriptToTrigger = NULL;
+  for(uint8_t i=MAX_NUMBER_OF_SCRIPTS; i > 0; i--){
+    if(Scripts[i].next == 0)
+      continue;
+    if(Scripts[i].next < nextScriptTrigger){
+      nextScriptTrigger = Scripts[i].next;
+      scriptToTrigger = &Scripts[i];
+    }
+  }
+  uint32_t timeToSleep = nextScriptTrigger - time(NULL);
+  logInfo("sleep for %d (%d:%2d:%2d) seconds to %s%s%s", 
+    timeToSleep, timeToSleep/3600, (timeToSleep/60) % 60, timeToSleep % 60,
+    (scriptToTrigger == NULL) ? "refrash scripts" : " run script '",
+    (scriptToTrigger == NULL) ? "" : scriptToTrigger->filename,
+    (scriptToTrigger == NULL) ? "" : "'");
+}