diff --git a/GPSSpeedMultiCore.ino b/GPSSpeedMultiCore.ino
index e166dab..59aa90a 100644
--- a/GPSSpeedMultiCore.ino
+++ b/GPSSpeedMultiCore.ino
@@ -23,31 +23,36 @@ std::atomic_int gpsFixType(0);
 //screen
 Adafruit_AlphaNum4 disp = Adafruit_AlphaNum4();
 unsigned long timeOfLastFix = 0UL;
+unsigned long timer = millis();
+bool setInitBrightness = false;
+unsigned long brightnessTimer = millis();
 
 //button
 volatile bool buttonPushed = false;
 volatile int ScreenBrightnessUser = 15;
 volatile int screenBrightnessCurrent = ScreenBrightnessUser;
 volatile unsigned long lastButtonPush = 0UL;
+volatile bool manualBrightness = false;
 
 
 void chageBrightness() {
   if (millis() - lastButtonPush > DEBOUNCE_DELAY) {
     buttonPushed = true;
     lastButtonPush = millis();
+    manualBrightness=true;
   }
 }
 
 void connectGPS() {  //need to do this everytime the GPS turns back on
   do {               //set gps to 115200 baudrate code comes from sparkfun examples
-                     // Serial.println("GNSS: trying 115200 baud");
+    Serial.println("GNSS: trying 115200 baud");
     Serial1.begin(115200);
     if (myGPS.begin(Serial1) == true) break;
     delay(100);
-    //Serial.println("GNSS: trying 9600 baud");
+    Serial.println("GNSS: trying 9600 baud");
     Serial1.begin(9600);
     if (myGPS.begin(Serial1) == true) {
-      //  Serial.println("GNSS: connected at 9600 baud, switching to 115200");
+      Serial.println("GNSS: connected at 9600 baud, switching to 115200");
       myGPS.setSerialRate(115200);
       delay(100);
     } else {
@@ -57,23 +62,36 @@ void connectGPS() {  //need to do this everytime the GPS turns back on
   myGPS.setAutoPVT(true);
   myGPS.setUART1Output(COM_TYPE_UBX);                  //Set the UART1 port to output UBX only (turn off NMEA noise)
   myGPS.setNavigationFrequency(GPS_UPDATE_FREQUENCY);  //set frequency of updates to 10/sec
-  myGPS.setDynamicModel(DYN_MODEL_AUTOMOTIVE);         //set dynamic model of GPS to automotive to more accutate results
+  //myGPS.setDynamicModel(DYN_MODEL_AUTOMOTIVE);         //set dynamic model of GPS to automotive to more accutate results
 }
 
 bool setStartBrightness() {
-  while (!(myGPS.getFixType() > 0)) {} //wait here untill gps gets a fix
-  double az, el;
-  setTime(myGPS.getHour(),myGPS.getMinute(),myGPS.getSecond(),myGPS.getDay(),myGPS.getMonth(),myGPS.getYear());
-  time_t timeUtc=now();
-  calcHorizontalCoordinates(timeUtc,(double) myGPS.getLatitude()*10000000,(double) myGPS.getLongitude() * 10000000,az,el);
+  double az = 0;
+  double el = 0;
+  int hour = myGPS.getHour();
+  int min = myGPS.getMinute();
+  int sec = myGPS.getSecond();
+  int day = myGPS.getDay();
+  int month = myGPS.getMonth();
+  int year = myGPS.getYear();
+  setTime(hour, min, sec, day, month, year);
+  time_t timeUtc = now();
+  double lat = myGPS.getLatitude();
+  lat = lat / 10000000;
+  double lng = myGPS.getLongitude();
+  lng = lng / 10000000;
+  calcHorizontalCoordinates(timeUtc, lat, lng, az, el);
 
-  if(el>SUNRISESET_STD_ALTITUDE){
-    screenBrightnessCurrent=15;
-  } else if ((el<SUNRISESET_STD_ALTITUDE)&&(el>CIVIL_DAWNDUSK_STD_ALTITUDE)){
-    screenBrightnessCurrent=MIDDLE_SCREEN_BRIGHTNESS;
-  } else if (el<CIVIL_DAWNDUSK_STD_ALTITUDE){
-    screenBrightnessCurrent=0;
+  //el = el - 180;
+
+  if (el > SUNRISESET_STD_ALTITUDE) {
+    screenBrightnessCurrent = 15;
+  } else if ((el < SUNRISESET_STD_ALTITUDE) && (el > CIVIL_DAWNDUSK_STD_ALTITUDE)) {
+    screenBrightnessCurrent = MIDDLE_SCREEN_BRIGHTNESS;
+  } else if (el < CIVIL_DAWNDUSK_STD_ALTITUDE) {
+    screenBrightnessCurrent = 0;
   }
+  ScreenBrightnessUser = screenBrightnessCurrent;
   disp.setBrightness(screenBrightnessCurrent);
   return true;
 }
@@ -101,6 +119,14 @@ void setup1() {
 }
 
 void loop() {
+  //set init brightness 
+  
+if((!setInitBrightness&&gpsFixType.load()>0)||((!manualBrightness&&millis() > brightnessTimer + 6000)&&gpsFixType.load()>0)){ //fire every minute
+    setStartBrightness();
+    setInitBrightness = true;
+    brightnessTimer= millis();
+}
+
   //change brightness
   if (buttonPushed == true) {
     if (ScreenBrightnessUser == 15) {
@@ -161,6 +187,7 @@ void loop() {
   rp2040.wdt_reset();  //rest watchdog timer
 }
 
+
 void loop1() {
   //myGPS.getPVT(GPS_WAIT_TIME);
   speed.store(myGPS.getGroundSpeed() * 0.0036);       //get speed in mm/s and convert to Km/h