diff --git a/platformio.ini b/platformio.ini
index a9ec7ab..e0554c3 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -17,4 +17,4 @@ monitor_filters=time
 lib_deps =
   # The exact version
   adafruit/Adafruit MAX31865 library @ 1.6.2
-  adafruit/Adafruit SSD1306 @ 2.5.13
+  adafruit/Adafruit SSD1306 @ 2.5.13
\ No newline at end of file
diff --git a/src/main.cpp b/src/main.cpp
index 6dc7bd0..819f31d 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -48,7 +48,8 @@ int LED_Blue = 2;
 #include <Adafruit_GFX.h>
 #include <Adafruit_SSD1306.h>
 #include <WiFi.h>
-#include <SD.h>
+
+
 
 
 #define SCREEN_WIDTH 128 // OLED display width, in pixels
@@ -60,12 +61,12 @@ Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
 
 #define NUMFLAKES     10 // Number of snowflakes in the animation example
 
-#define chipSelect  4
+#define SD_CS_PIN        15  // or 5
 
-#define SD_SCK 14
-#define SD_MISO 12
-#define SD_MOSI 13
-#define SD_CS 27
+// These pins will be use for SPI2
+#define SD_CLK_PIN       14
+#define SD_MOSI_PIN      13
+#define SD_MISO_PIN      12
 
 
 
@@ -79,8 +80,6 @@ time_t now;
 long unsigned lastNTPtime;
 unsigned long lastEntryTime;
 
-File myFile;
-
 char szZeit[20]; 
 
 bool getNTPtime(int sec) {
@@ -148,6 +147,7 @@ void blinkError(){
   digitalWrite (LED_Blue, !HIGH);
 }
 
+
 void drawIST(float wert){
   char msgt[20];
   dtostrf(wert, 6, 2, msgt);
@@ -179,7 +179,7 @@ void drawIST(float wert){
 
 void setup() {
   Serial.begin(115200);
-  //pinMode (chipSelect, OUTPUT);
+  //PinMode (chipSelect, OUTPUT);
   pinMode (LED_Blue, OUTPUT);
   /* while (!Serial) {
 
@@ -210,6 +210,9 @@ void setup() {
   display.println("Wait to   Wlan.");
   display.display();
 
+  WiFi.disconnect();
+  delay(100);
+  WiFi.mode(WIFI_STA); 
   WiFi.begin(ssid, password);
   while (WiFi.status() != WL_CONNECTED) {
     delay(500);
@@ -217,19 +220,6 @@ void setup() {
   }
   Serial.printf("\nConnecting to %s\n", ssid);
 
-  
-
-  if(!SD.begin(SD_CS)){
-    Serial.println("SD-Card not connected!");
-    while(1){
-      blinkError();
-    };
-  }
-  else{
-    Serial.println("SD-Card initialized");
-  }
-
-
 
   // Clear the buffer
   display.clearDisplay();
@@ -282,7 +272,7 @@ void loop() {
     Serial.print("Ratio = "); Serial.println(ratio,8);
     Serial.print("Resistance = "); Serial.println(RREF*ratio,8);
     messung = thermo.temperature(RNOMINAL, RREF);
-    Serial.printf("Temperature:  %3.1f °C\n", messung);
+    Serial.printf("Temperature:  %3.3f °C\n", messung);
     drawIST(messung);
     // Check and print any faults
     uint8_t fault = thermo.readFault();