diff --git a/include/CronTimers.h b/include/CronTimers.h
index 4d12a7a..5c38867 100644
--- a/include/CronTimers.h
+++ b/include/CronTimers.h
@@ -65,14 +65,20 @@ typedef struct
 
     bool rise; /*!<If event is sunrise*/
     bool sensor_enab; /*!< Enable light sensor handle */
-    double sensor_angle; /*!<Sun angle start sensor checking*/
-    double main_angle;/*!<Sun angle unconditional event issue*/
+    float sensor_angle; /*!<Sun angle start sensor checking*/
+    float main_angle;/*!<Sun angle unconditional event issue*/
     int sensor_time;
     int main_time;
 
     char exec[TIMER_EXECSTRING_LENGTH]; /*!< Cron command string */
 } astro_timer_t;
 
+typedef struct
+{
+
+
+} astro_handle_t;
+
 esp_err_t InitCronSheduler();
 esp_err_t ReloadCronSheduler();
 char* GetCronError();
diff --git a/src/CronTimers.c b/src/CronTimers.c
index 6c6bf9d..f14f3d4 100644
--- a/src/CronTimers.c
+++ b/src/CronTimers.c
@@ -165,11 +165,11 @@ esp_err_t ReloadCronSheduler()
 static uint16_t srTime = 0;
 static uint16_t ssTime = 0;
 
-static double Lat, Lon, Ang;
+static float Lat, Lon, Ang;
 
 
 
-static double GetSunEvent(uint8_t event, uint16_t day);
+static float GetSunEvent(uint8_t event, uint16_t day);
 
 uint16_t NumberDayFromUnix(uint32_t t)
 {
@@ -221,15 +221,15 @@ uint16_t GetSunset(void)
 }
 
 
-static double GetSunEvent(uint8_t event, uint16_t day)
+static float GetSunEvent(uint8_t event, uint16_t day)
 {
-  double lngHour, t, M, L, RA, sinDec, cosDec, cosH, H, T, UT;
-  double Lquadrant, RAquadrant;
-  double zen;
+  float lngHour, t, M, L, RA, sinDec, cosDec, cosH, H, T, UT;
+  float Lquadrant, RAquadrant;
+  float zen;
   if (SUN_ANG == 0)
-    zen = zenith + (double) SUN_ANG; //sunrise/set
+    zen = zenith + (float) SUN_ANG; //sunrise/set
   else
-    zen = 90.0 + (double) SUN_ANG; //twilight
+    zen = 90.0 + (float) SUN_ANG; //twilight
   lngHour = LON / 15;
   if (event == 0)
     t = day + ((6 - lngHour) / 24);