diff --git a/code/components/jomjol_flowcontroll/ClassFlowAlignment.cpp b/code/components/jomjol_flowcontroll/ClassFlowAlignment.cpp
index 532cd63f..e4ecf610 100644
--- a/code/components/jomjol_flowcontroll/ClassFlowAlignment.cpp
+++ b/code/components/jomjol_flowcontroll/ClassFlowAlignment.cpp
@@ -3,11 +3,13 @@
 #include "ClassFlow.h"
 
 #include "CRotateImage.h"
+#include "esp_log.h"
 
 
 #include "ClassLogFile.h"
 
 
+static const char *TAG = "class_flow_alignment";
 
 bool AlignmentExtendedDebugging = true;
 
@@ -48,7 +50,7 @@ ClassFlowAlignment::ClassFlowAlignment(std::vector<ClassFlow*>* lfc)
 
     if (!ImageBasis)            // die Funktion Bilder aufnehmen existiert nicht --> muss erst erzeugt werden NUR ZU TESTZWECKEN
     {
-        if (AlignmentExtendedDebugging) printf("CImageBasis had to be created\n");
+        if (AlignmentExtendedDebugging) ESP_LOGD(TAG, "CImageBasis had to be created");
         ImageBasis = new CImageBasis(namerawimage);
     }
 }
@@ -174,7 +176,7 @@ bool ClassFlowAlignment::doFlow(string time)
     }
 
     if (initialmirror){
-        printf("do mirror\n");
+        ESP_LOGD(TAG, "do mirror");
         rt.Mirror();
         if (SaveAllFiles) AlignAndCutImage->SaveToFile(FormatFileName("/sdcard/img_tmp/mirror.jpg"));
     }
@@ -279,7 +281,7 @@ bool ClassFlowAlignment::LoadReferenceAlignmentValues(void)
 //    LogFile.WriteToDedicatedFile("/sdcard/alignment.txt", "LoadReferenceAlignmentValues01");      
 
     fgets(zw, 1024, pFile);
-    printf("%s", zw);
+    ESP_LOGD(TAG, "%s", zw);
 
 //    zwvalue = "LoadReferenceAlignmentValues Time: " + std::string(zw);
 
diff --git a/code/components/jomjol_flowcontroll/ClassFlowCNNGeneral.cpp b/code/components/jomjol_flowcontroll/ClassFlowCNNGeneral.cpp
index 9eba7190..ba7ca83c 100644
--- a/code/components/jomjol_flowcontroll/ClassFlowCNNGeneral.cpp
+++ b/code/components/jomjol_flowcontroll/ClassFlowCNNGeneral.cpp
@@ -7,6 +7,7 @@
 
 #include "CTfLiteClass.h"
 #include "ClassLogFile.h"
+#include "esp_log.h"
 
 static const char* TAG = "flow_analog";
 
@@ -311,7 +312,7 @@ bool ClassFlowCNNGeneral::ReadParameter(FILE* pfile, string& aktparamgraph)
     {
         disabled = true;
         while (getNextLine(pfile, &aktparamgraph) && !isNewParagraph(aktparamgraph));
-        printf("[Analog/Digit] is disabled !!!\n");
+        ESP_LOGD(TAG, "[Analog/Digit] is disabled!");
         return true;
     }
 
@@ -429,7 +430,7 @@ general* ClassFlowCNNGeneral::GetGENERAL(string _name, bool _create = true)
 
     _ret->ROI.push_back(neuroi);
 
-    printf("GetGENERAL - GENERAL %s - roi %s - CCW: %d\n", _analog.c_str(), _roi.c_str(), neuroi->CCW);
+    ESP_LOGD(TAG, "GetGENERAL - GENERAL %s - roi %s - CCW: %d", _analog.c_str(), _roi.c_str(), neuroi->CCW);
 
     return _ret;
 }
@@ -488,7 +489,7 @@ bool ClassFlowCNNGeneral::doAlignAndCut(string time)
     for (int _ana = 0; _ana < GENERAL.size(); ++_ana)
         for (int i = 0; i < GENERAL[_ana]->ROI.size(); ++i)
         {
-            printf("General %d - Align&Cut\n", i);
+            ESP_LOGD(TAG, "General %d - Align&Cut", i);
             
             caic->CutAndSave(GENERAL[_ana]->ROI[i]->posx, GENERAL[_ana]->ROI[i]->posy, GENERAL[_ana]->ROI[i]->deltax, GENERAL[_ana]->ROI[i]->deltay, GENERAL[_ana]->ROI[i]->image_org);
             if (SaveAllFiles)
@@ -545,9 +546,9 @@ bool ClassFlowCNNGeneral::getNetworkParameter()
     CTfLiteClass *tflite = new CTfLiteClass;  
     string zwcnn = "/sdcard" + cnnmodelfile;
     zwcnn = FormatFileName(zwcnn);
-    printf(zwcnn.c_str());printf("\n");
+    ESP_LOGD(TAG, "%s", zwcnn.c_str());
     if (!tflite->LoadModel(zwcnn)) {
-        printf("Can't read model file /sdcard%s\n", cnnmodelfile.c_str());
+        ESP_LOGD(TAG, "Can't read model file /sdcard%s", cnnmodelfile.c_str());
         LogFile.WriteToFile("Cannot load model");
         delete tflite;
         return false;
@@ -566,37 +567,37 @@ bool ClassFlowCNNGeneral::getNetworkParameter()
         {
             case 2:
                 CNNType = Analogue;
-                printf("TFlite-Type set to Analogue\n");
+                ESP_LOGD(TAG, "TFlite-Type set to Analogue");
                 break;
             case 10:
                 CNNType = DoubleHyprid10;
-                printf("TFlite-Type set to DoubleHyprid10\n");
+                ESP_LOGD(TAG, "TFlite-Type set to DoubleHyprid10");
                 break;
             case 11:
                 CNNType = Digital;
-                printf("TFlite-Type set to Digital\n");
+                ESP_LOGD(TAG, "TFlite-Type set to Digital");
                 break;
 /*            case 20:
                 CNNType = DigitalHyprid10;
-                printf("TFlite-Type set to DigitalHyprid10\n");
+                ESP_LOGD(TAG, "TFlite-Type set to DigitalHyprid10");
                 break;
 */
 //            case 22:
 //                CNNType = DigitalHyprid;
-//                printf("TFlite-Type set to DigitalHyprid\n");
+//                ESP_LOGD(TAG, "TFlite-Type set to DigitalHyprid");
 //                break;
              case 100:
                 if (modelxsize==32 && modelysize == 32) {
                     CNNType = Analogue100;
-                    printf("TFlite-Type set to Analogue100\n");
+                    ESP_LOGD(TAG, "TFlite-Type set to Analogue100");
                 } else {
                     CNNType = Digital100;
-                    printf("TFlite-Type set to Digital\n");
+                    ESP_LOGD(TAG, "TFlite-Type set to Digital");
                 }
                 break;
             default:
                 LogFile.WriteToFile("ERROR ERROR ERROR - tflite passt nicht zur Firmware - ERROR ERROR ERROR (outout_dimension=" + std::to_string(_anzoutputdimensions) + ")");
-                printf("ERROR ERROR ERROR - tflite passt nicht zur Firmware - ERROR ERROR ERROR\n");
+                ESP_LOGD(TAG, "ERROR ERROR ERROR - tflite passt nicht zur Firmware - ERROR ERROR ERROR");
         }
     }
 
@@ -614,9 +615,9 @@ bool ClassFlowCNNGeneral::doNeuralNetwork(string time)
     CTfLiteClass *tflite = new CTfLiteClass;  
     string zwcnn = "/sdcard" + cnnmodelfile;
     zwcnn = FormatFileName(zwcnn);
-    printf(zwcnn.c_str());printf("\n");
+    ESP_LOGD(TAG, "%s", zwcnn.c_str());
     if (!tflite->LoadModel(zwcnn)) {
-        printf("Can't read model file /sdcard%s\n", cnnmodelfile.c_str());
+        ESP_LOGD(TAG, "Can't read model file /sdcard%s", cnnmodelfile.c_str());
         LogFile.WriteToFile("Cannot load model");
 
         delete tflite;
@@ -628,7 +629,7 @@ bool ClassFlowCNNGeneral::doNeuralNetwork(string time)
     {
         for (int i = 0; i < GENERAL[_ana]->ROI.size(); ++i)
         {
-            printf("General %d - TfLite\n", i);
+            ESP_LOGD(TAG, "General %d - TfLite", i);
 
             switch (CNNType) {
                 case Analogue:
@@ -649,7 +650,7 @@ bool ClassFlowCNNGeneral::doNeuralNetwork(string time)
                         else
                             GENERAL[_ana]->ROI[i]->result_float = result * 10;
                               
-                        printf("Result General(Analog)%i - CCW: %d -  %f\n", i, GENERAL[_ana]->ROI[i]->CCW, GENERAL[_ana]->ROI[i]->result_float); 
+                        ESP_LOGD(TAG, "Result General(Analog)%i - CCW: %d -  %f", i, GENERAL[_ana]->ROI[i]->CCW, GENERAL[_ana]->ROI[i]->result_float);
                         if (isLogImage)
                             LogImage(logPath, GENERAL[_ana]->ROI[i]->name, &GENERAL[_ana]->ROI[i]->result_float, NULL, time, GENERAL[_ana]->ROI[i]->image_org);
                     } break;
@@ -658,7 +659,7 @@ bool ClassFlowCNNGeneral::doNeuralNetwork(string time)
                     {
                         GENERAL[_ana]->ROI[i]->result_klasse = 0;
                         GENERAL[_ana]->ROI[i]->result_klasse = tflite->GetClassFromImageBasis(GENERAL[_ana]->ROI[i]->image);
-                        printf("Result General(Digit)%i: %d\n", i, GENERAL[_ana]->ROI[i]->result_klasse);
+                        ESP_LOGD(TAG, "Result General(Digit)%i: %d", i, GENERAL[_ana]->ROI[i]->result_klasse);
 
                         if (isLogImage)
                         {
@@ -695,7 +696,7 @@ bool ClassFlowCNNGeneral::doNeuralNetwork(string time)
                         else
                             GENERAL[_ana]->ROI[i]->result_float = fmod((double) _num + (((double)_nachkomma)-5)/10 + (double) 10, 10);
 
-                        printf("Result General(DigitalHyprid)%i: %f\n", i, GENERAL[_ana]->ROI[i]->result_float); 
+                        ESP_LOGD(TAG, "Result General(DigitalHyprid)%i: %f\n", i, GENERAL[_ana]->ROI[i]->result_float);
                         _zwres = "Result General(DigitalHyprid)" + to_string(i) + ": " + to_string(GENERAL[_ana]->ROI[i]->result_float);
                         if (debugdetailgeneral) LogFile.WriteToFile(_zwres);
 
@@ -732,7 +733,7 @@ bool ClassFlowCNNGeneral::doNeuralNetwork(string time)
 
                         GENERAL[_ana]->ROI[i]->result_float = fmod((double) _num + (((double)_nachkomma)-5)/10 + (double) 10, 10);
 
-                        printf("Result General(DigitalHyprid)%i: %f\n", i, GENERAL[_ana]->ROI[i]->result_float); 
+                        ESP_LOGD(TAG, "Result General(DigitalHyprid)%i: %f\n", i, GENERAL[_ana]->ROI[i]->result_float);
                         _zwres = "Result General(DigitalHyprid)" + to_string(i) + ": " + to_string(GENERAL[_ana]->ROI[i]->result_float);
                         if (debugdetailgeneral) LogFile.WriteToFile(_zwres);
 
@@ -792,7 +793,7 @@ bool ClassFlowCNNGeneral::doNeuralNetwork(string time)
                         string zw = "_num (p, m): " + to_string(_num) + " " + to_string(_numplus) + " " + to_string(_numminus);
                         zw = zw + " _val (p, m): " + to_string(_val) + " " + to_string(_valplus) + " " + to_string(_valminus);
                         zw = zw + " result: " + to_string(result) + " _fit: " + to_string(_fit);
-                        printf("details cnn: %s\n", zw.c_str());
+                        ESP_LOGD(TAG, "details cnn: %s", zw.c_str());
                         LogFile.WriteToFile(zw);
 
 
@@ -804,7 +805,7 @@ bool ClassFlowCNNGeneral::doNeuralNetwork(string time)
                             result = -1;
                             _result_save_file+= 100;     // Für den Fall, dass fit nicht ausreichend, soll trotzdem das Ergebnis mit "-10x.y" abgespeichert werden.
                             string zw = "Value Rejected due to Threshold (Fit: " + to_string(_fit) + "Threshold: " + to_string(CNNGoodThreshold);
-                            printf("Value Rejected due to Threshold (Fit: %f, Threshold: %f\n", _fit, CNNGoodThreshold);
+                            ESP_LOGD(TAG, "Value Rejected due to Threshold (Fit: %f, Threshold: %f", _fit, CNNGoodThreshold);
                             LogFile.WriteToFile(zw);
                         }
                         else
@@ -814,7 +815,7 @@ bool ClassFlowCNNGeneral::doNeuralNetwork(string time)
 
 
                         GENERAL[_ana]->ROI[i]->result_float = result;
-                        printf("Result General(Analog)%i: %f\n", i, GENERAL[_ana]->ROI[i]->result_float); 
+                        ESP_LOGD(TAG, "Result General(Analog)%i: %f", i, GENERAL[_ana]->ROI[i]->result_float);
 
                         if (isLogImage)
                         {
@@ -852,7 +853,7 @@ bool ClassFlowCNNGeneral::doNeuralNetwork(string time)
                         
                         GENERAL[_ana]->ROI[i]->isReject = false;
                         
-                        printf("Result General(Analog)%i - CCW: %d -  %f\n", i, GENERAL[_ana]->ROI[i]->CCW, GENERAL[_ana]->ROI[i]->result_float); 
+                        ESP_LOGD(TAG, "Result General(Analog)%i - CCW: %d -  %f", i, GENERAL[_ana]->ROI[i]->CCW, GENERAL[_ana]->ROI[i]->result_float);
 
                         if (isLogImage)
                         {
@@ -898,7 +899,7 @@ std::vector<HTMLInfo*> ClassFlowCNNGeneral::GetHTMLInfo()
     for (int _ana = 0; _ana < GENERAL.size(); ++_ana)
         for (int i = 0; i < GENERAL[_ana]->ROI.size(); ++i)
         {
-            printf("Image: %d\n", (int) GENERAL[_ana]->ROI[i]->image);
+            ESP_LOGD(TAG, "Image: %d", (int) GENERAL[_ana]->ROI[i]->image);
             if (GENERAL[_ana]->ROI[i]->image)
             {
                 if (GENERAL[_ana]->name == "default")
diff --git a/code/components/jomjol_flowcontroll/ClassFlowControll.cpp b/code/components/jomjol_flowcontroll/ClassFlowControll.cpp
index 615795c9..22982b7a 100644
--- a/code/components/jomjol_flowcontroll/ClassFlowControll.cpp
+++ b/code/components/jomjol_flowcontroll/ClassFlowControll.cpp
@@ -33,7 +33,7 @@ static const char* TAG = "flow_controll";
 std::string ClassFlowControll::doSingleStep(std::string _stepname, std::string _host){
     std::string _classname = "";
     std::string result = "";
-//    printf("_stepname: %s\n", _stepname.c_str());
+//    ESP_LOGD(TAG, "_stepname: %s", _stepname.c_str());
     if ((_stepname.compare("[MakeImage]") == 0) || (_stepname.compare(";[MakeImage]") == 0)){
         _classname = "ClassFlowMakeImage";
     }
@@ -89,7 +89,7 @@ std::vector<HTMLInfo*> ClassFlowControll::GetAllDigital()
 {
     if (flowdigit)
     {
-        printf("ClassFlowControll::GetAllDigital - flowdigit != NULL\n");
+        ESP_LOGD(TAG, "ClassFlowControll::GetAllDigital - flowdigit != NULL");
         return flowdigit->GetHTMLInfo();
     }
 
@@ -230,7 +230,7 @@ void ClassFlowControll::InitFlow(std::string config)
     if (pFile != NULL)
     {
         fgets(zw, 1024, pFile);
-        printf("%s", zw);
+        ESP_LOGD(TAG, "%s", zw);
         line = std::string(zw);
     }
 
@@ -239,7 +239,7 @@ void ClassFlowControll::InitFlow(std::string config)
         cfc = CreateClassFlow(line);
         if (cfc)
         {
-            printf("Start ReadParameter (%s)\n", line.c_str());
+            ESP_LOGD(TAG, "Start ReadParameter (%s)", line.c_str());
             cfc->ReadParameter(pFile, line);
         }
         else
@@ -247,7 +247,7 @@ void ClassFlowControll::InitFlow(std::string config)
             line = "";
             if (fgets(zw, 1024, pFile) && !feof(pFile))
                 {
-                    printf("Read: %s", zw);
+                    ESP_LOGD(TAG, "Read: %s", zw);
                     line = std::string(zw);
                 }
         }
@@ -362,7 +362,7 @@ string ClassFlowControll::getReadoutAll(int _type)
             if (i < (*numbers).size()-1)
                 out = out + "\r\n";
         }
-    //    printf("OUT: %s", out.c_str());
+    //    ESP_LOGD(TAG, "OUT: %s", out.c_str());
     }
 
     return out;
@@ -408,7 +408,7 @@ std::string ClassFlowControll::UpdatePrevalue(std::string _newvalue, std::string
     char* p;
 
     _newvalue = trim(_newvalue);
-//    printf("Input UpdatePreValue: %s\n", _newvalue.c_str());
+//    ESP_LOGD(TAG, "Input UpdatePreValue: %s", _newvalue.c_str());
 
     if (_newvalue.compare("0.0") == 0)
     {
@@ -493,7 +493,7 @@ bool ClassFlowControll::ReadParameter(FILE* pfile, string& aktparamgraph)
             {
                 // reboot notwendig damit die neue wlan.ini auch benutzt wird !!!
                 fclose(pfile);
-                printf("do reboot\n");
+                ESP_LOGD(TAG, "do reboot");
                 LogFile.SwitchOnOff(true);
                 LogFile.WriteToFile("Reboot to activate new HOSTNAME.");
                 esp_restart();
@@ -558,7 +558,7 @@ esp_err_t ClassFlowControll::SendRawJPG(httpd_req_t *req)
 
 esp_err_t ClassFlowControll::GetJPGStream(std::string _fn, httpd_req_t *req)
 {
-    printf("ClassFlowControll::GetJPGStream %s\n", _fn.c_str());
+    ESP_LOGD(TAG, "ClassFlowControll::GetJPGStream %s", _fn.c_str());
 
     CImageBasis *_send = NULL;
     esp_err_t result = ESP_FAIL;
@@ -566,7 +566,7 @@ esp_err_t ClassFlowControll::GetJPGStream(std::string _fn, httpd_req_t *req)
 
     if (flowalignment == NULL)
     {
-        printf("Can't continue, flowalignment is NULL\n");
+        ESP_LOGD(TAG, "Can't continue, flowalignment is NULL");
         return ESP_FAIL;
     }
 
@@ -589,7 +589,7 @@ esp_err_t ClassFlowControll::GetJPGStream(std::string _fn, httpd_req_t *req)
         {
             std::vector<HTMLInfo*> htmlinfo;
             htmlinfo = GetAllDigital();
-            printf("After getClassFlowControll::GetAllDigital\n");
+            ESP_LOGD(TAG, "After getClassFlowControll::GetAllDigital");
 
             for (int i = 0; i < htmlinfo.size(); ++i)
             {
diff --git a/code/components/jomjol_flowcontroll/ClassFlowImage.cpp b/code/components/jomjol_flowcontroll/ClassFlowImage.cpp
index a5c9ca54..c42c7cb0 100644
--- a/code/components/jomjol_flowcontroll/ClassFlowImage.cpp
+++ b/code/components/jomjol_flowcontroll/ClassFlowImage.cpp
@@ -14,6 +14,8 @@ extern "C" {
 #include "time_sntp.h"
 #include "ClassLogFile.h"
 #include "CImageBasis.h"
+#include "esp_log.h"
+
 
 ClassFlowImage::ClassFlowImage(const char* logTag)
 {
@@ -79,7 +81,7 @@ void ClassFlowImage::LogImage(string logPath, string name, float *resultFloat, i
 	nm = FormatFileName(nm);
 	string output = "/sdcard/img_tmp/" + name + ".jpg";
 	output = FormatFileName(output);
-	printf("save to file: %s\n", nm.c_str());
+	ESP_LOGD(logTag, "save to file: %s", nm.c_str());
 	_img->SaveToFile(nm);
 //	CopyFile(output, nm);
 }
diff --git a/code/components/jomjol_flowcontroll/ClassFlowInfluxDB.cpp b/code/components/jomjol_flowcontroll/ClassFlowInfluxDB.cpp
index 55b1f9ff..bbf78628 100644
--- a/code/components/jomjol_flowcontroll/ClassFlowInfluxDB.cpp
+++ b/code/components/jomjol_flowcontroll/ClassFlowInfluxDB.cpp
@@ -6,9 +6,12 @@
 #include "time_sntp.h"
 #include "interface_influxdb.h"
 #include "ClassFlowPostProcessing.h"
+#include "esp_log.h"
 
 #include <time.h>
 
+static const char* TAG = "class_flow_influxDb";
+
 void ClassFlowInfluxDB::SetInitialParameter(void)
 {
     uri = "";
@@ -76,7 +79,7 @@ bool ClassFlowInfluxDB::ReadParameter(FILE* pfile, string& aktparamgraph)
 
     while (this->getNextLine(pfile, &aktparamgraph) && !this->isNewParagraph(aktparamgraph))
     {
-        printf("while loop reading line: %s\n", aktparamgraph.c_str());
+        ESP_LOGD(TAG, "while loop reading line: %s", aktparamgraph.c_str());
         zerlegt = this->ZerlegeZeile(aktparamgraph);
         if ((toUpper(zerlegt[0]) == "USER") && (zerlegt.size() > 1))
         {
@@ -102,11 +105,11 @@ bool ClassFlowInfluxDB::ReadParameter(FILE* pfile, string& aktparamgraph)
 
     if ((uri.length() > 0) && (database.length() > 0) && (measurement.length() > 0)) 
     { 
-        printf("Init InfluxDB with uri: %s, measurement: %s, user: %s, password: %s\n", uri.c_str(), measurement.c_str(), user.c_str(), password.c_str());
+        ESP_LOGD(TAG, "Init InfluxDB with uri: %s, measurement: %s, user: %s, password: %s", uri.c_str(), measurement.c_str(), user.c_str(), password.c_str());
         InfluxDBInit(uri, database, measurement, user, password); 
         InfluxDBenable = true;
     } else {
-        printf("InfluxDB init skipped as we are missing some parameters");
+        ESP_LOGD(TAG, "InfluxDB init skipped as we are missing some parameters");
     }
    
     return true;
diff --git a/code/components/jomjol_flowcontroll/ClassFlowMQTT.cpp b/code/components/jomjol_flowcontroll/ClassFlowMQTT.cpp
index 8bd4cce4..2cfcaaca 100644
--- a/code/components/jomjol_flowcontroll/ClassFlowMQTT.cpp
+++ b/code/components/jomjol_flowcontroll/ClassFlowMQTT.cpp
@@ -12,6 +12,8 @@
 
 #define __HIDE_PASSWORD
 
+static const char *TAG = "class_flow_MQTT";
+
 void ClassFlowMQTT::SetInitialParameter(void)
 {
     uri = "";
@@ -120,19 +122,19 @@ bool ClassFlowMQTT::ReadParameter(FILE* pfile, string& aktparamgraph)
     }
 
 #ifdef __HIDE_PASSWORD
-    printf("Init Read with uri: %s, clientname: %s, user: %s, password: XXXXXX, maintopic: %s\n", uri.c_str(), clientname.c_str(), user.c_str(), mainerrortopic.c_str());
+    ESP_LOGD(TAG, "Init Read with uri: %s, clientname: %s, user: %s, password: XXXXXX, maintopic: %s", uri.c_str(), clientname.c_str(), user.c_str(), mainerrortopic.c_str());
 #else
-    printf("Init Read with uri: %s, clientname: %s, user: %s, password: %s, maintopic: %s\n", uri.c_str(), clientname.c_str(), user.c_str(), password.c_str(), mainerrortopic.c_str());
+    ESP_LOGD(TAG, "Init Read with uri: %s, clientname: %s, user: %s, password: %s, maintopic: %s", uri.c_str(), clientname.c_str(), user.c_str(), password.c_str(), mainerrortopic.c_str());
 #endif
 
     if (!MQTTisConnected() && (uri.length() > 0) && (maintopic.length() > 0)) 
     { 
-        printf("InitMQTTInit\n");
+        ESP_LOGD(TAG, "InitMQTTInit");
         mainerrortopic = maintopic + "/connection";
 #ifdef __HIDE_PASSWORD
-        printf("Init MQTT with uri: %s, clientname: %s, user: %s, password: XXXXXXXX, maintopic: %s\n", uri.c_str(), clientname.c_str(), user.c_str(), mainerrortopic.c_str());
+        ESP_LOGD(TAG, "Init MQTT with uri: %s, clientname: %s, user: %s, password: XXXXXXXX, maintopic: %s", uri.c_str(), clientname.c_str(), user.c_str(), mainerrortopic.c_str());
 #else
-        printf("Init MQTT with uri: %s, clientname: %s, user: %s, password: %s, maintopic: %s\n", uri.c_str(), clientname.c_str(), user.c_str(), password.c_str(), mainerrortopic.c_str());
+        ESP_LOGD(TAG, "Init MQTT with uri: %s, clientname: %s, user: %s, password: %s, maintopic: %s", uri.c_str(), clientname.c_str(), user.c_str(), password.c_str(), mainerrortopic.c_str());
 #endif
         if (!MQTTInit(uri, clientname, user, password, mainerrortopic, keepAlive))
         { // Failed
diff --git a/code/components/jomjol_flowcontroll/ClassFlowMakeImage.cpp b/code/components/jomjol_flowcontroll/ClassFlowMakeImage.cpp
index 9e68a5f8..08fdfade 100644
--- a/code/components/jomjol_flowcontroll/ClassFlowMakeImage.cpp
+++ b/code/components/jomjol_flowcontroll/ClassFlowMakeImage.cpp
@@ -6,6 +6,7 @@
 #include "ClassControllCamera.h"
 
 #include "esp_wifi.h"
+#include "esp_log.h"
 
 #include <time.h>
 
@@ -30,7 +31,7 @@ void ClassFlowMakeImage::takePictureWithFlash(int flashdauer)
     rawImage->width = image_width;          
     rawImage->height = image_height;
     /////////////////////////////////////////////////////////////////////////////////////
-    printf("Flashdauer: %d\n", flashdauer);
+    ESP_LOGD(TAG, "Flashdauer: %d", flashdauer);
     Camera.CaptureToBasisImage(rawImage, flashdauer);
     time(&TimeImageTaken);
     localtime(&TimeImageTaken);
@@ -145,7 +146,7 @@ bool ClassFlowMakeImage::ReadParameter(FILE* pfile, string& aktparamgraph)
     waitbeforepicture_store = waitbeforepicture;
     if (FixedExposure && (waitbeforepicture > 0))
     {
-//        printf("Fixed Exposure enabled!\n");
+//        ESP_LOGD(TAG, "Fixed Exposure enabled!");
         int flashdauer = (int) (waitbeforepicture * 1000);
         Camera.EnableAutoExposure(flashdauer);
         waitbeforepicture = 0.2;
diff --git a/code/components/jomjol_flowcontroll/ClassFlowPostProcessing.cpp b/code/components/jomjol_flowcontroll/ClassFlowPostProcessing.cpp
index 646582e5..100f8895 100644
--- a/code/components/jomjol_flowcontroll/ClassFlowPostProcessing.cpp
+++ b/code/components/jomjol_flowcontroll/ClassFlowPostProcessing.cpp
@@ -9,6 +9,11 @@
 #include <time.h>
 
 #include "time_sntp.h"
+
+#include "esp_log.h"
+
+static const char* TAG = "class_flow_postproc";
+
 //#define SERIAL_DEBUG // testing debug on serial enabled
 
 
@@ -72,10 +77,10 @@ string ClassFlowPostProcessing::GetPreValue(std::string _number)
 
 void ClassFlowPostProcessing::SetPreValue(double zw, string _numbers, bool _extern)
 {
-    printf("SetPrevalue: %f, %s\n", zw, _numbers.c_str());
+    ESP_LOGD(TAG, "SetPrevalue: %f, %s", zw, _numbers.c_str());
     for (int j = 0; j < NUMBERS.size(); ++j)
     {
-//        printf("Number %d, %s\n", j, NUMBERS[j]->name.c_str());
+//        ESP_LOGD(TAG, "Number %d, %s", j, NUMBERS[j]->name.c_str());
         if (NUMBERS[j]->name == _numbers)
         {
             NUMBERS[j]->PreValue = zw;
@@ -86,7 +91,7 @@ void ClassFlowPostProcessing::SetPreValue(double zw, string _numbers, bool _exte
                 time(&(NUMBERS[j]->lastvalue));
                 localtime(&(NUMBERS[j]->lastvalue));
             }
-//            printf("Found %d! - set to %f\n", j,  NUMBERS[j]->PreValue);
+//            ESP_LOGD(TAG, "Found %d! - set to %f", j,  NUMBERS[j]->PreValue);
         }
     }
     UpdatePreValueINI = true;
@@ -110,7 +115,7 @@ bool ClassFlowPostProcessing::LoadPreValue(void)
         return false;
 
     fgets(zw, 1024, pFile);
-    printf("Read line Prevalue.ini: %s", zw);
+    ESP_LOGD(TAG, "Read line Prevalue.ini: %s", zw);
     zwtime = trim(std::string(zw));
     if (zwtime.length() == 0)
         return false;
@@ -161,7 +166,7 @@ bool ClassFlowPostProcessing::LoadPreValue(void)
                 _done = true;
             else
             {
-                printf("Read line Prevalue.ini: %s", zw);
+                ESP_LOGD(TAG, "Read line Prevalue.ini: %s", zw);
                 zerlegt = HelperZerlegeZeile(trim(std::string(zw)), "\t");
                 if (zerlegt.size() > 1)
                 {
@@ -177,7 +182,7 @@ bool ClassFlowPostProcessing::LoadPreValue(void)
     {
         fgets(zw, 1024, pFile);
         fclose(pFile);
-        printf("%s", zw);
+        ESP_LOGD(TAG, "%s", zw);
         zwvalue = trim(std::string(zw));
         NUMBERS[0]->PreValue = stod(zwvalue.c_str());
 
@@ -194,7 +199,7 @@ bool ClassFlowPostProcessing::LoadPreValue(void)
         whenStart.tm_sec = ss;
         whenStart.tm_isdst = -1;
 
-        printf("TIME: %d, %d, %d, %d, %d, %d\n", whenStart.tm_year, whenStart.tm_mon, whenStart.tm_wday, whenStart.tm_hour, whenStart.tm_min, whenStart.tm_sec);
+        ESP_LOGD(TAG, "TIME: %d, %d, %d, %d, %d, %d", whenStart.tm_year, whenStart.tm_mon, whenStart.tm_wday, whenStart.tm_hour, whenStart.tm_min, whenStart.tm_sec);
 
         NUMBERS[0]->lastvalue = mktime(&whenStart);
 
@@ -236,10 +241,10 @@ void ClassFlowPostProcessing::SavePreValue()
         struct tm* timeinfo = localtime(&NUMBERS[j]->lastvalue);
         strftime(buffer, 80, PREVALUE_TIME_FORMAT_OUTPUT, timeinfo);
         NUMBERS[j]->timeStamp = std::string(buffer);
-//        printf("SaverPreValue %d, Value: %f, Nachkomma %d\n", j, NUMBERS[j]->PreValue, NUMBERS[j]->Nachkomma);
+//        ESP_LOGD(TAG, "SaverPreValue %d, Value: %f, Nachkomma %d", j, NUMBERS[j]->PreValue, NUMBERS[j]->Nachkomma);
 
         _zw = NUMBERS[j]->name + "\t" + NUMBERS[j]->timeStamp + "\t" + RundeOutput(NUMBERS[j]->PreValue, NUMBERS[j]->Nachkomma) + "\n";
-        printf("Write PreValue Zeile: %s\n", _zw.c_str());
+        ESP_LOGD(TAG, "Write PreValue Zeile: %s", _zw.c_str());
         if (pFile) {
             fputs(_zw.c_str(), pFile);
         }
@@ -278,7 +283,7 @@ void ClassFlowPostProcessing::handleDecimalExtendedResolution(string _decsep, st
 {
     string _digit, _decpos;
     int _pospunkt = _decsep.find_first_of(".");
-//    printf("Name: %s, Pospunkt: %d\n", _decsep.c_str(), _pospunkt);
+//    ESP_LOGD(TAG, "Name: %s, Pospunkt: %d", _decsep.c_str(), _pospunkt);
     if (_pospunkt > -1)
         _digit = _decsep.substr(0, _pospunkt);
     else
@@ -308,7 +313,7 @@ void ClassFlowPostProcessing::handleDecimalSeparator(string _decsep, string _val
 {
     string _digit, _decpos;
     int _pospunkt = _decsep.find_first_of(".");
-//    printf("Name: %s, Pospunkt: %d\n", _decsep.c_str(), _pospunkt);
+//    ESP_LOGD(TAG, "Name: %s, Pospunkt: %d", _decsep.c_str(), _pospunkt);
     if (_pospunkt > -1)
         _digit = _decsep.substr(0, _pospunkt);
     else
@@ -324,7 +329,7 @@ void ClassFlowPostProcessing::handleDecimalSeparator(string _decsep, string _val
         }
 /*        catch(const std::exception& e)
         {
-            printf("ERROR - Decimalshift is not a number: %s\n", _value.c_str());
+            ESP_LOGD(TAG, "ERROR - Decimalshift is not a number: %s", _value.c_str());
         }
 */        
         if (_digit == "default")                        // erstmal auf default setzen (falls sonst nichts gesetzt)
@@ -347,7 +352,7 @@ void ClassFlowPostProcessing::handleAnalogDigitalTransitionStart(string _decsep,
 {
     string _digit, _decpos;
     int _pospunkt = _decsep.find_first_of(".");
-//    printf("Name: %s, Pospunkt: %d\n", _decsep.c_str(), _pospunkt);
+//    ESP_LOGD(TAG, "Name: %s, Pospunkt: %d", _decsep.c_str(), _pospunkt);
     if (_pospunkt > -1)
         _digit = _decsep.substr(0, _pospunkt);
     else
@@ -372,7 +377,7 @@ void ClassFlowPostProcessing::handleMaxRateType(string _decsep, string _value)
 {
     string _digit, _decpos;
     int _pospunkt = _decsep.find_first_of(".");
-//    printf("Name: %s, Pospunkt: %d\n", _decsep.c_str(), _pospunkt);
+//    ESP_LOGD(TAG, "Name: %s, Pospunkt: %d", _decsep.c_str(), _pospunkt);
     if (_pospunkt > -1)
         _digit = _decsep.substr(0, _pospunkt);
     else
@@ -404,7 +409,7 @@ void ClassFlowPostProcessing::handleMaxRateValue(string _decsep, string _value)
 {
     string _digit, _decpos;
     int _pospunkt = _decsep.find_first_of(".");
-//    printf("Name: %s, Pospunkt: %d\n", _decsep.c_str(), _pospunkt);
+//    ESP_LOGD(TAG, "Name: %s, Pospunkt: %d", _decsep.c_str(), _pospunkt);
     if (_pospunkt > -1)
         _digit = _decsep.substr(0, _pospunkt);
     else
@@ -418,7 +423,7 @@ void ClassFlowPostProcessing::handleMaxRateValue(string _decsep, string _value)
         }
 /*        catch(const std::exception& e)
         {
-            printf("ERROR - MaxRateValue is not a number: %s\n", _value.c_str());
+            ESP_LOGD(TAG, "ERROR - MaxRateValue is not a number: %s", _value.c_str());
         }
 */
         if (_digit == "default")                        // erstmal auf default setzen (falls sonst nichts gesetzt)
@@ -541,7 +546,7 @@ void ClassFlowPostProcessing::InitNUMBERS()
         flowAnalog->UpdateNameNumbers(&name_numbers);
     }
 
-    printf("Anzahl NUMBERS: %d - DIGITS: %d, ANALOG: %d\n", name_numbers.size(), anzDIGIT, anzANALOG);
+    ESP_LOGD(TAG, "Anzahl NUMBERS: %d - DIGITS: %d, ANALOG: %d", name_numbers.size(), anzDIGIT, anzANALOG);
 
     for (int _num = 0; _num < name_numbers.size(); ++_num)
     {
@@ -597,7 +602,7 @@ void ClassFlowPostProcessing::InitNUMBERS()
     }
 
     for (int i = 0; i < NUMBERS.size(); ++i) {
-        printf("Number %s, Anz DIG: %d, Anz ANA %d\n", NUMBERS[i]->name.c_str(), NUMBERS[i]->AnzahlDigital, NUMBERS[i]->AnzahlAnalog);
+        ESP_LOGD(TAG, "Number %s, Anz DIG: %d, Anz ANA %d", NUMBERS[i]->name.c_str(), NUMBERS[i]->AnzahlDigital, NUMBERS[i]->AnzahlAnalog);
     }
 
 }
@@ -666,7 +671,7 @@ bool ClassFlowPostProcessing::doFlow(string zwtime)
     strftime(strftime_buf, sizeof(strftime_buf), "%Y-%m-%dT%H:%M:%S", timeinfo);
     zwtime = std::string(strftime_buf);
 
-    printf("Anzahl NUMBERS: %d\n", NUMBERS.size());
+    ESP_LOGD(TAG, "Anzahl NUMBERS: %d", NUMBERS.size());
 
     for (int j = 0; j < NUMBERS.size(); ++j)
     {
@@ -691,7 +696,7 @@ bool ClassFlowPostProcessing::doFlow(string zwtime)
             }
         }
         #ifdef SERIAL_DEBUG
-            printf("After analog->getReadout: ReturnRaw %s\n", NUMBERS[j]->ReturnRawValue.c_str());  
+            ESP_LOGD(TAG, "After analog->getReadout: ReturnRaw %s", NUMBERS[j]->ReturnRawValue.c_str());
         #endif
         if (NUMBERS[j]->digit_roi && NUMBERS[j]->analog_roi)
             NUMBERS[j]->ReturnRawValue = "." + NUMBERS[j]->ReturnRawValue;
@@ -704,12 +709,12 @@ bool ClassFlowPostProcessing::doFlow(string zwtime)
                 NUMBERS[j]->ReturnRawValue = flowDigit->getReadout(j, NUMBERS[j]->isExtendedResolution, previous_value);        // Extended Resolution nur falls es keine analogen Ziffern gibt
         }
         #ifdef SERIAL_DEBUG
-            printf("After digital->getReadout: ReturnRaw %s\n", NUMBERS[j]->ReturnRawValue.c_str());  
+            ESP_LOGD(TAG, "After digital->getReadout: ReturnRaw %s", NUMBERS[j]->ReturnRawValue.c_str());
         #endif
         NUMBERS[j]->ReturnRawValue = ShiftDecimal(NUMBERS[j]->ReturnRawValue, NUMBERS[j]->DecimalShift);
 
         #ifdef SERIAL_DEBUG
-            printf("After ShiftDecimal: ReturnRaw %s\n", NUMBERS[j]->ReturnRawValue.c_str());  
+            ESP_LOGD(TAG, "After ShiftDecimal: ReturnRaw %s", NUMBERS[j]->ReturnRawValue.c_str());
         #endif
 
         if (IgnoreLeadingNaN)               
@@ -717,7 +722,7 @@ bool ClassFlowPostProcessing::doFlow(string zwtime)
                 NUMBERS[j]->ReturnRawValue.erase(0, 1);
 
         #ifdef SERIAL_DEBUG
-            printf("After IgnoreLeadingNaN: ReturnRaw %s\n", NUMBERS[j]->ReturnRawValue.c_str());  
+            ESP_LOGD(TAG, "After IgnoreLeadingNaN: ReturnRaw %s", NUMBERS[j]->ReturnRawValue.c_str());
         #endif
         NUMBERS[j]->ReturnValue = NUMBERS[j]->ReturnRawValue;
 
@@ -734,17 +739,17 @@ bool ClassFlowPostProcessing::doFlow(string zwtime)
             }
         }
         #ifdef SERIAL_DEBUG
-            printf("After findDelimiterPos: ReturnValue %s\n", NUMBERS[j]->ReturnRawValue.c_str());  
+            ESP_LOGD(TAG, "After findDelimiterPos: ReturnValue %s", NUMBERS[j]->ReturnRawValue.c_str());
         #endif
         // Lösche führende Nullen (außer es ist nur noch einen 0)
         while ((NUMBERS[j]->ReturnValue.length() > 1) && (NUMBERS[j]->ReturnValue[0] == '0'))
             NUMBERS[j]->ReturnValue.erase(0, 1);
         #ifdef SERIAL_DEBUG
-            printf("After removeLeadingZeros: ReturnValue %s\n", NUMBERS[j]->ReturnRawValue.c_str());  
+            ESP_LOGD(TAG, "After removeLeadingZeros: ReturnValue %s", NUMBERS[j]->ReturnRawValue.c_str());
         #endif
         NUMBERS[j]->Value = std::stod(NUMBERS[j]->ReturnValue);
         #ifdef SERIAL_DEBUG
-            printf("After setting the Value: Value %f and as double is %f\n", NUMBERS[j]->Value, std::stod(NUMBERS[j]->ReturnValue));  
+            ESP_LOGD(TAG, "After setting the Value: Value %f and as double is %f", NUMBERS[j]->Value, std::stod(NUMBERS[j]->ReturnValue));
         #endif
 
         if (NUMBERS[j]->checkDigitIncreaseConsistency)
@@ -752,20 +757,20 @@ bool ClassFlowPostProcessing::doFlow(string zwtime)
             if (flowDigit)
             {
                 if (flowDigit->getCNNType() != Digital)
-                    printf("checkDigitIncreaseConsistency = true - ignored due to wrong CNN-Type (not Digital Classification)\n"); 
+                    ESP_LOGD(TAG, "checkDigitIncreaseConsistency = true - ignored due to wrong CNN-Type (not Digital Classification)");
                 else 
                     NUMBERS[j]->Value = checkDigitConsistency(NUMBERS[j]->Value, NUMBERS[j]->DecimalShift, NUMBERS[j]->analog_roi != NULL, NUMBERS[j]->PreValue);
             }
             else
             {
                 #ifdef SERIAL_DEBUG
-                    printf("checkDigitIncreaseConsistency = true - no digital numbers defined!\n"); 
+                    ESP_LOGD(TAG, "checkDigitIncreaseConsistency = true - no digital numbers defined!");
                 #endif
             }
         }
 
         #ifdef SERIAL_DEBUG
-            printf("After checkDigitIncreaseConsistency: Value %f\n", NUMBERS[j]->Value);  
+            ESP_LOGD(TAG, "After checkDigitIncreaseConsistency: Value %f", NUMBERS[j]->Value);
         #endif
                
 
@@ -774,7 +779,7 @@ bool ClassFlowPostProcessing::doFlow(string zwtime)
             if ((NUMBERS[j]->Value < NUMBERS[j]->PreValue))
             {
                 #ifdef SERIAL_DEBUG
-                    printf("Neg: value=%f, preValue=%f, preToll%f\n", NUMBERS[j]->Value, NUMBERS[j]->PreValue,
+                    ESP_LOGD(TAG, "Neg: value=%f, preValue=%f, preToll%f", NUMBERS[j]->Value, NUMBERS[j]->PreValue,
                      NUMBERS[j]->PreValue-(2/pow(10, NUMBERS[j]->Nachkomma))
                       ) ;
                 #endif
@@ -793,7 +798,7 @@ bool ClassFlowPostProcessing::doFlow(string zwtime)
             }
         }
         #ifdef SERIAL_DEBUG
-            printf("After AllowNegativeRates: Value %f\n", NUMBERS[j]->Value);  
+            ESP_LOGD(TAG, "After AllowNegativeRates: Value %f", NUMBERS[j]->Value);
         #endif
         double difference = difftime(imagetime, NUMBERS[j]->lastvalue);      // in Sekunden
         difference /= 60;  
@@ -819,7 +824,7 @@ bool ClassFlowPostProcessing::doFlow(string zwtime)
             }
         }
         #ifdef SERIAL_DEBUG
-           printf("After MaxRateCheck: Value %f\n", NUMBERS[j]->Value);  
+           ESP_LOGD(TAG, "After MaxRateCheck: Value %f", NUMBERS[j]->Value);
         #endif
         NUMBERS[j]->ReturnChangeAbsolute = RundeOutput(NUMBERS[j]->Value - NUMBERS[j]->PreValue, NUMBERS[j]->Nachkomma);                                                
         NUMBERS[j]->lastvalue = imagetime;
@@ -834,7 +839,7 @@ bool ClassFlowPostProcessing::doFlow(string zwtime)
         UpdatePreValueINI = true;
 
         string _zw = "PostProcessing - Raw: " + NUMBERS[j]->ReturnRawValue + " Value: " + NUMBERS[j]->ReturnValue + " Error: " + NUMBERS[j]->ErrorMessageText;
-        printf("%s\n", zw.c_str());
+        ESP_LOGD(TAG, "%s", zw.c_str());
         LogFile.WriteToFile(_zw);
         WriteDataLog(j);
     }
@@ -853,7 +858,7 @@ void ClassFlowPostProcessing::WriteDataLog(int _analog)
         digital = flowDigit->getReadoutRawString(_analog);
 //    LogFile.WriteToFile(analog);
     LogFile.WriteToData(NUMBERS[_analog]->ReturnRawValue, NUMBERS[_analog]->ReturnValue, NUMBERS[_analog]->ReturnPreValue, NUMBERS[_analog]->ErrorMessageText, digital, analog);
-    printf("WriteDataLog: %s, %s, %s, %s, %s", NUMBERS[_analog]->ReturnRawValue.c_str(), NUMBERS[_analog]->ReturnValue.c_str(), NUMBERS[_analog]->ErrorMessageText.c_str(), digital.c_str(), analog.c_str());
+    ESP_LOGD(TAG, "WriteDataLog: %s, %s, %s, %s, %s", NUMBERS[_analog]->ReturnRawValue.c_str(), NUMBERS[_analog]->ReturnValue.c_str(), NUMBERS[_analog]->ErrorMessageText.c_str(), digital.c_str(), analog.c_str());
 }
 
 
@@ -863,7 +868,7 @@ void ClassFlowPostProcessing::UpdateNachkommaDecimalShift()
     {
         if (NUMBERS[j]->digit_roi && !NUMBERS[j]->analog_roi)            // es gibt nur digitale ziffern
         {
-//            printf("Nurdigital\n");
+//            ESP_LOGD(TAG, "Nurdigital");
             NUMBERS[j]->DecimalShift = NUMBERS[j]->DecimalShiftInitial;
 
             if (NUMBERS[j]->isExtendedResolution && flowDigit->isExtendedResolution())  // extended resolution ist an und soll auch bei dieser Ziffer verwendet werden
@@ -874,7 +879,7 @@ void ClassFlowPostProcessing::UpdateNachkommaDecimalShift()
 
         if (!NUMBERS[j]->digit_roi && NUMBERS[j]->analog_roi)            // es gibt nur analoge ziffern
         {
-//            printf("Nur analog\n");
+//            ESP_LOGD(TAG, "Nur analog");
             NUMBERS[j]->DecimalShift = NUMBERS[j]->DecimalShiftInitial;
             if (NUMBERS[j]->isExtendedResolution && flowAnalog->isExtendedResolution())  // extended resolution ist an und soll auch bei dieser Ziffer verwendet werden
                 NUMBERS[j]->DecimalShift = NUMBERS[j]->DecimalShift-1;
@@ -884,7 +889,7 @@ void ClassFlowPostProcessing::UpdateNachkommaDecimalShift()
 
         if (NUMBERS[j]->digit_roi && NUMBERS[j]->analog_roi)            // digital + analog
         {
-//            printf("Nur digital + analog\n");
+//            ESP_LOGD(TAG, "Nur digital + analog");
 
             NUMBERS[j]->DecimalShift = NUMBERS[j]->DecimalShiftInitial;
             NUMBERS[j]->Nachkomma = NUMBERS[j]->analog_roi->ROI.size() - NUMBERS[j]->DecimalShift;
@@ -894,7 +899,7 @@ void ClassFlowPostProcessing::UpdateNachkommaDecimalShift()
 
         }
 
-        printf("UpdateNachkommaDecShift NUMBER%i: Nachkomma %i, DecShift %i\n", j, NUMBERS[j]->Nachkomma,NUMBERS[j]->DecimalShift);
+        ESP_LOGD(TAG, "UpdateNachkommaDecShift NUMBER%i: Nachkomma %i, DecShift %i", j, NUMBERS[j]->Nachkomma,NUMBERS[j]->DecimalShift);
     }
 }
 
@@ -916,7 +921,7 @@ string ClassFlowPostProcessing::getReadoutParam(bool _rawValue, bool _noerror, i
 string ClassFlowPostProcessing::RundeOutput(double _in, int _anzNachkomma){
     std::stringstream stream;
     int _zw = _in;    
-//    printf("AnzNachkomma: %d\n", _anzNachkomma);
+//    ESP_LOGD(TAG, "AnzNachkomma: %d", _anzNachkomma);
 
     if (_anzNachkomma < 0) {
         _anzNachkomma = 0;
@@ -981,7 +986,7 @@ float ClassFlowPostProcessing::checkDigitConsistency(double input, int _decilams
         pot++;
     }
     #ifdef SERIAL_DEBUG
-        printf("checkDigitConsistency: pot=%d, decimalshift=%d\n", pot, _decilamshift);
+        ESP_LOGD(TAG, "checkDigitConsistency: pot=%d, decimalshift=%d", pot, _decilamshift);
     #endif
     pot_max = ((int) log10(input)) + 1;
     while (pot <= pot_max)
@@ -1013,7 +1018,7 @@ float ClassFlowPostProcessing::checkDigitConsistency(double input, int _decilams
             }
         }
         #ifdef SERIAL_DEBUG
-            printf("checkDigitConsistency: input=%f", input);
+            ESP_LOGD(TAG, "checkDigitConsistency: input=%f", input);
         #endif
         pot++;
     }
diff --git a/code/components/jomjol_helper/Helper.cpp b/code/components/jomjol_helper/Helper.cpp
index ab18fa11..c0b4c508 100644
--- a/code/components/jomjol_helper/Helper.cpp
+++ b/code/components/jomjol_helper/Helper.cpp
@@ -22,6 +22,8 @@ extern "C" {
 #include "ClassLogFile.h"
 //#include "ClassLogFile.h"
 
+static const char* TAG = "helper";
+
 //#define ISWINDOWS_TRUE
 #define PATH_MAX_STRING_SIZE 256
 
@@ -90,13 +92,13 @@ FILE* OpenFileAndWait(const char* nm, const char* _mode, int _waitsec)
 {
 	FILE *pfile;
 
-	printf("open file %s in mode %s\n", nm, _mode);
+	ESP_LOGD(TAG, "open file %s in mode %s", nm, _mode);
 
 	if ((pfile = fopen(nm, _mode)) != NULL) {
-		printf("File %s successfully opened\n", nm);
+		ESP_LOGD(TAG, "File %s successfully opened", nm);
 	}
 	else {
-		printf("Error: file %s does not exist!\n", nm);
+		ESP_LOGD(TAG, "Error: file %s does not exist!", nm);
 		return NULL;
 	}
 
@@ -106,8 +108,7 @@ FILE* OpenFileAndWait(const char* nm, const char* _mode, int _waitsec)
 		TickType_t xDelay;
 		xDelay = _waitsec * 1000 / portTICK_PERIOD_MS;
 		std::string zw = "File is locked: " + std::string(nm) + " - wait for " + std::to_string(_waitsec) + " seconds";
-	    printf(zw.c_str());
-		printf("\n");
+	    ESP_LOGD(TAG, "%s", zw.c_str());
 		LogFile.WriteToFile(zw);      
 		vTaskDelay( xDelay );
 		pfile = fopen(nm, _mode);
@@ -159,7 +160,7 @@ void MakeDir(std::string _what)
 //	chdir(_where.c_str());
 
 	if (mkdir(_what.c_str(), S_IRWXU|S_IRWXG|S_IROTH))
-		printf("Problem with MakeDir: %s \n", _what.c_str());
+		ESP_LOGD(TAG, "Problem with MakeDir: %s", _what.c_str());
 }
 
 
@@ -233,7 +234,7 @@ void RenameFile(string from, string to)
 	FILE* fpSourceFile = OpenFileAndWait(from.c_str(), "rb");
 	if (!fpSourceFile)	// Sourcefile existiert nicht sonst gibt es einen Fehler beim Kopierversuch!
 	{
-		printf("DeleteFile: File %s existiert nicht!\n", from.c_str());
+		ESP_LOGD(TAG, "DeleteFile: File %s existiert nicht!", from.c_str());
 		return;
 	}
 	fclose(fpSourceFile);
@@ -249,7 +250,7 @@ void DeleteFile(string fn)
 	FILE* fpSourceFile = OpenFileAndWait(fn.c_str(), "rb");
 	if (!fpSourceFile)	// Sourcefile existiert nicht sonst gibt es einen Fehler beim Kopierversuch!
 	{
-		printf("DeleteFile: File %s existiert nicht!\n", fn.c_str());
+		ESP_LOGD(TAG, "DeleteFile: File %s existiert nicht!", fn.c_str());
 		return;
 	}
 	fclose(fpSourceFile);
@@ -265,7 +266,7 @@ void CopyFile(string input, string output)
 
 	if (toUpper(input).compare("/SDCARD/WLAN.INI") == 0)
 	{
-		printf("wlan.ini kann nicht kopiert werden!\n");
+		ESP_LOGD(TAG, "wlan.ini kann nicht kopiert werden!");
 		return;
 	}
 
@@ -273,7 +274,7 @@ void CopyFile(string input, string output)
 	FILE* fpSourceFile = OpenFileAndWait(input.c_str(), "rb");
 	if (!fpSourceFile)	// Sourcefile existiert nicht sonst gibt es einen Fehler beim Kopierversuch!
 	{
-		printf("File %s existiert nicht!\n", input.c_str());
+		ESP_LOGD(TAG, "File %s existiert nicht!", input.c_str());
 		return;
 	}
 
@@ -291,7 +292,7 @@ void CopyFile(string input, string output)
 	// Close The Files
 	fclose(fpSourceFile);
 	fclose(fpTargetFile);
-	printf("File copied: %s to %s", input.c_str(), output.c_str());
+	ESP_LOGD(TAG, "File copied: %s to %s", input.c_str(), output.c_str());
 }
 
 string getFileFullFileName(string filename)
@@ -301,7 +302,7 @@ string getFileFullFileName(string filename)
 	if (lastpos == string::npos)
 		return "";
 
-//	printf("Last position: %d\n", lastpos);
+//	ESP_LOGD(TAG, "Last position: %d", lastpos);
 
 	string zw = filename.substr(lastpos + 1, filename.size() - lastpos);
 
@@ -318,7 +319,7 @@ string getDirectory(string filename)
 	if (lastpos == string::npos)
 		return "";
 
-//	printf("Directory: %d\n", lastpos);
+//	ESP_LOGD(TAG, "Directory: %d", lastpos);
 
 	string zw = filename.substr(0, lastpos - 1);
 	return zw;
diff --git a/code/components/jomjol_image_proc/CAlignAndCutImage.cpp b/code/components/jomjol_image_proc/CAlignAndCutImage.cpp
index f96d4661..4ce07b3b 100644
--- a/code/components/jomjol_image_proc/CAlignAndCutImage.cpp
+++ b/code/components/jomjol_image_proc/CAlignAndCutImage.cpp
@@ -5,6 +5,9 @@
 #define _USE_MATH_DEFINES
 #include <math.h>
 #include <algorithm>
+#include <esp_log.h>
+
+static const char* TAG = "c_align_and_cut_image";
 
 //#define GET_MEMORY malloc
 #define GET_MEMORY(X) heap_caps_malloc(X, MALLOC_CAP_SPIRAM)
@@ -43,14 +46,14 @@ bool CAlignAndCutImage::Align(RefInfo *_temp1, RefInfo *_temp2)
 
     r0_x = _temp1->target_x;
     r0_y = _temp1->target_y;
-    printf("Vor ft->FindTemplate(_temp1);  %s\n", _temp1->image_file.c_str());
+    ESP_LOGD(TAG, "Vor ft->FindTemplate(_temp1); %s", _temp1->image_file.c_str());
     isSimilar1 = ft->FindTemplate(_temp1);
     _temp1->width = ft->tpl_width;
     _temp1->height = ft->tpl_height; 
 
     r1_x = _temp2->target_x;
     r1_y = _temp2->target_y;
-    printf("Vor ft->FindTemplate(_temp2);  %s\n", _temp2->image_file.c_str());
+    ESP_LOGD(TAG, "Vor ft->FindTemplate(_temp2); %s", _temp2->image_file.c_str());
     isSimilar2 = ft->FindTemplate(_temp2);
     _temp2->width = ft->tpl_width;
     _temp2->height = ft->tpl_height; 
@@ -86,7 +89,7 @@ bool CAlignAndCutImage::Align(RefInfo *_temp1, RefInfo *_temp2)
     CRotateImage rt(this, ImageTMP);
     rt.Translate(dx, dy);
     rt.Rotate(d_winkel, _temp1->target_x, _temp1->target_y);
-    printf("Alignment: dx %d - dy %d - rot %f\n", dx, dy, d_winkel);
+    ESP_LOGD(TAG, "Alignment: dx %d - dy %d - rot %f", dx, dy, d_winkel);
 
     return (isSimilar1 && isSimilar2);
 }
@@ -147,7 +150,7 @@ void CAlignAndCutImage::CutAndSave(int x1, int y1, int dx, int dy, CImageBasis *
 
     if ((_target->height != dy) || (_target->width != dx) || (_target->channels != channels))
     {
-        printf("CAlignAndCutImage::CutAndSave - Image size does not match !!");
+        ESP_LOGD(TAG, "CAlignAndCutImage::CutAndSave - Image size does not match!");
         return;
     }
 
diff --git a/code/components/jomjol_image_proc/CFindTemplate.cpp b/code/components/jomjol_image_proc/CFindTemplate.cpp
index e3761431..66119167 100644
--- a/code/components/jomjol_image_proc/CFindTemplate.cpp
+++ b/code/components/jomjol_image_proc/CFindTemplate.cpp
@@ -2,6 +2,10 @@
 
 #include "ClassLogFile.h"
 
+#include <esp_log.h>
+
+static const char* TAG = "c_find_template";
+
 // #define DEBUG_DETAIL_ON  
 
 
@@ -9,7 +13,7 @@ bool CFindTemplate::FindTemplate(RefInfo *_ref)
 {
     uint8_t* rgb_template = stbi_load(_ref->image_file.c_str(), &tpl_width, &tpl_height, &tpl_bpp, channels);
 
-//    printf("FindTemplate 01\n");
+//    ESP_LOGD(TAG, "FindTemplate 01");
 
     int ow, ow_start, ow_stop;
     int oh, oh_start, oh_stop;
@@ -45,7 +49,7 @@ bool CFindTemplate::FindTemplate(RefInfo *_ref)
     int min, max;
     bool isSimilar = false;
 
-//    printf("FindTemplate 02\n");
+//    ESP_LOGD(TAG, "FindTemplate 02");
 
     if ((_ref->alignment_algo == 2) && (_ref->fastalg_x > -1) && (_ref->fastalg_y > -1))     // für Testzwecke immer Berechnen
     {
@@ -57,7 +61,7 @@ bool CFindTemplate::FindTemplate(RefInfo *_ref)
 #endif
     }
 
-//    printf("FindTemplate 03\n");
+//    ESP_LOGD(TAG, "FindTemplate 03");
 
 
     if (isSimilar)
@@ -70,7 +74,7 @@ bool CFindTemplate::FindTemplate(RefInfo *_ref)
         return true;
     }
 
-//    printf("FindTemplate 04\n");
+//    ESP_LOGD(TAG, "FindTemplate 04");
 
 
     double aktSAD;
@@ -78,7 +82,7 @@ bool CFindTemplate::FindTemplate(RefInfo *_ref)
 
     RGBImageLock();
 
-//    printf("FindTemplate 05\n");
+//    ESP_LOGD(TAG, "FindTemplate 05");
     int xouter, youter, tpl_x, tpl_y, _ch;
     int _anzchannels = channels;
     if (_ref->alignment_algo == 0)  // 0 = "Default" (nur R-Kanal)
@@ -106,14 +110,14 @@ bool CFindTemplate::FindTemplate(RefInfo *_ref)
             }
         }
 
-//    printf("FindTemplate 06\n");
+//    ESP_LOGD(TAG, "FindTemplate 06");
 
 
     if (_ref->alignment_algo == 2)
         CalculateSimularities(rgb_template, _ref->found_x, _ref->found_y, ow, oh, min, avg, max, SAD, _ref->fastalg_SAD, _ref->fastalg_SAD_criteria);
 
 
-//    printf("FindTemplate 07\n");
+//    ESP_LOGD(TAG, "FindTemplate 07");
 
     _ref->fastalg_x = _ref->found_x;
     _ref->fastalg_y = _ref->found_y;
@@ -132,7 +136,7 @@ bool CFindTemplate::FindTemplate(RefInfo *_ref)
     RGBImageRelease();
     stbi_image_free(rgb_template);
     
-//    printf("FindTemplate 08\n");
+//    ESP_LOGD(TAG, "FindTemplate 08");
 
     return false;
 }
@@ -173,7 +177,7 @@ bool CFindTemplate::CalculateSimularities(uint8_t* _rgb_tmpl, int _startx, int _
 
     float _SADdif = abs(SAD - _SADold);
 
-    printf("Anzahl %ld, avgDifSum %fd, avg %f, SAD_neu: %fd, _SAD_old: %f, _SAD_crit:%f\n", anz, avgDifSum, avg, SAD, _SADold, _SADdif);
+    ESP_LOGD(TAG, "Anzahl %ld, avgDifSum %fd, avg %f, SAD_neu: %fd, _SAD_old: %f, _SAD_crit:%f", anz, avgDifSum, avg, SAD, _SADold, _SADdif);
 
     if (_SADdif <= _SADcrit)
         return true;
diff --git a/code/components/jomjol_image_proc/CImageBasis.cpp b/code/components/jomjol_image_proc/CImageBasis.cpp
index 46e341c7..f705de71 100644
--- a/code/components/jomjol_image_proc/CImageBasis.cpp
+++ b/code/components/jomjol_image_proc/CImageBasis.cpp
@@ -61,7 +61,7 @@ uint8_t * CImageBasis::RGBImageGet()
 
 void writejpghelp(void *context, void *data, int size)
 {
-//    printf("Size all: %d, size %d\n", ((ImageData*)context)->size, size);
+//    ESP_LOGD(TAG, "Size all: %d, size %d", ((ImageData*)context)->size, size);
     ImageData* _zw = (ImageData*) context;
     uint8_t *voidstart = _zw->data;
     uint8_t *datastart = (uint8_t*) data;
@@ -146,7 +146,7 @@ bool CImageBasis::CopyFromMemory(uint8_t* _source, int _size)
     int gr = height * width * channels;
     if (gr != _size)            // Größe passt nicht
     {
-        printf("Cannot copy image from memory - sizes do not match: should be %d, but is %d\n", _size, gr);
+        ESP_LOGD(TAG, "Cannot copy image from memory - sizes do not match: should be %d, but is %d", _size, gr);
         return false;
     }
 
@@ -359,7 +359,7 @@ void CImageBasis::LoadFromMemory(stbi_uc *_buffer, int len)
         stbi_image_free(rgb_image);
     rgb_image = stbi_load_from_memory(_buffer, len, &width, &height, &channels, 3);
     bpp = channels;
-    printf("Image loaded from memory: %d, %d, %d\n", width, height, channels);
+    ESP_LOGD(TAG, "Image loaded from memory: %d, %d, %d", width, height, channels);
     if ((width * height * channels) == 0)
     {
         ESP_LOGE(TAG, "Image with size 0 loaded --> reboot to be done! "
@@ -392,7 +392,7 @@ CImageBasis::CImageBasis(CImageBasis *_copyfrom, int _anzrepeat)
     int anz = 1;
     while (!rgb_image && (anz < _anzrepeat))    
     {
-	    printf("Create Image from Copy - Memory is full - try again: %d.\n", anz);
+	    ESP_LOGD(TAG, "Create Image from Copy - Memory is full - try again: %d", anz);
         rgb_image = (unsigned char*) malloc(memsize);
         anz++;
     }
@@ -400,8 +400,8 @@ CImageBasis::CImageBasis(CImageBasis *_copyfrom, int _anzrepeat)
     
     if (!rgb_image)
     {
-        printf(getESPHeapInfo().c_str());
-        printf("\nNo more free memory!! Needed: %d %d %d %d\n", width, height, channels, memsize);
+        ESP_LOGD(TAG, "%s", getESPHeapInfo().c_str());
+        ESP_LOGD(TAG, "No more free memory!! Needed: %d %d %d %d", width, height, channels, memsize);
         RGBImageRelease();
         return;
     }
@@ -424,8 +424,8 @@ CImageBasis::CImageBasis(int _width, int _height, int _channels)
     rgb_image = (unsigned char*)GET_MEMORY(memsize);
     if (!rgb_image)
     {
-        printf(getESPHeapInfo().c_str());
-        printf("\nNo more free memory!! Needed: %d %d %d %d\n", width, height, channels, memsize);
+        ESP_LOGD(TAG, "%s", getESPHeapInfo().c_str());
+        ESP_LOGD(TAG, "No more free memory!! Needed: %d %d %d %d", width, height, channels, memsize);
         return;
     }
 }
@@ -438,21 +438,21 @@ CImageBasis::CImageBasis(std::string _image)
     externalImage = false;
     filename = _image;
     long zwld = esp_get_free_heap_size();
-    printf("freeheapsize before: %ld\n", zwld);
+    ESP_LOGD(TAG, "freeheapsize before: %ld", zwld);
 
     RGBImageLock();
     rgb_image = stbi_load(_image.c_str(), &width, &height, &bpp, channels);
     RGBImageRelease();
 
     zwld = esp_get_free_heap_size();
-    printf("freeheapsize after : %ld\n", zwld);
+    ESP_LOGD(TAG, "freeheapsize after : %ld", zwld);
 
-    std::string zw = "Image Load failed:" + _image + "\n";
+    std::string zw = "Image Load failed:" + _image;
     if (rgb_image == NULL)
-        printf(zw.c_str());
+        ESP_LOGD(TAG, "%s", zw.c_str());
     zw = "CImageBasis after load " + _image + "\n";
-    printf(zw.c_str());
-    printf("w %d, h %d, b %d, c %d\n", width, height, bpp, channels);
+    ESP_LOGD(TAG, "%s", zw.c_str());
+    ESP_LOGD(TAG, "w %d, h %d, b %d, c %d", width, height, bpp, channels);
 
 }
 
@@ -543,7 +543,7 @@ void CImageBasis::Resize(int _new_dx, int _new_dy, CImageBasis *_target)
 {
     if ((_target->height != _new_dy) || (_target->width != _new_dx) || (_target->channels != channels))
     {
-        printf("CImageBasis::Resize - Target image size does not fit !!");
+        ESP_LOGD(TAG, "CImageBasis::Resize - Target image size does not fit!");
         return;
     }
 
diff --git a/code/components/jomjol_image_proc/CRotateImage.cpp b/code/components/jomjol_image_proc/CRotateImage.cpp
index 96eec7a0..821c4269 100644
--- a/code/components/jomjol_image_proc/CRotateImage.cpp
+++ b/code/components/jomjol_image_proc/CRotateImage.cpp
@@ -280,13 +280,13 @@ void CRotateImage::RotateAntiAliasing(float _angle, int _centerx, int _centery)
 
 void CRotateImage::Rotate(float _angle)
 {
-//    printf("width %d, height %d\n", width, height);
+//    ESP_LOGD(TAG, "width %d, height %d", width, height);
     Rotate(_angle, width / 2, height / 2);
 }
 
 void CRotateImage::RotateAntiAliasing(float _angle)
 {
-//    printf("width %d, height %d\n", width, height);
+//    ESP_LOGD(TAG, "width %d, height %d", width, height);
     RotateAntiAliasing(_angle, width / 2, height / 2);
 }
 
diff --git a/code/components/jomjol_logfile/ClassLogFile.cpp b/code/components/jomjol_logfile/ClassLogFile.cpp
index 34e5d1eb..84be1076 100644
--- a/code/components/jomjol_logfile/ClassLogFile.cpp
+++ b/code/components/jomjol_logfile/ClassLogFile.cpp
@@ -64,7 +64,7 @@ std::string ClassLogFile::getESPHeapInfo(){
 
 void ClassLogFile::WriteToData(std::string _ReturnRawValue, std::string _ReturnValue, std::string _ReturnPreValue, std::string _ErrorMessageText, std::string _digital, std::string _analog)
 {
-    printf("Start WriteToData\n");
+    ESP_LOGD(TAG, "Start WriteToData\n");
     time_t rawtime;
     struct tm* timeinfo;
     char buffer[30];
@@ -82,7 +82,7 @@ void ClassLogFile::WriteToData(std::string _ReturnRawValue, std::string _ReturnV
         return;
     }
 
-    printf("Datalogfile: %s\n", logpath.c_str());
+    ESP_LOGD(TAG, "Datalogfile: %s", logpath.c_str());
     pFile = fopen(logpath.c_str(), "a+");
 
     if (pFile!=NULL) {
@@ -130,7 +130,7 @@ void ClassLogFile::WriteToDedicatedFile(std::string _fn, std::string info, bool
 
 //    pFile = OpenFileAndWait(_fn.c_str(), "a"); 
     pFile = fopen(_fn.c_str(), "a+");
-//    printf("Logfile opened: %s\n", _fn.c_str());
+//    ESP_LOGD(TAG, "Logfile opened: %s", _fn.c_str());
 
     if (pFile!=NULL) {
         if (_time)
@@ -186,7 +186,7 @@ void ClassLogFile::WriteToFile(std::string info, bool _time)
     std::string logpath = logroot + "/" + buffer; 
     
     WriteToDedicatedFile(logpath, info, _time);
-    printf((info + "\n").c_str());
+    ESP_LOGD(TAG, "%s", info.c_str());
 }
 
 std::string ClassLogFile::GetCurrentFileName()
diff --git a/code/components/jomjol_wlan/read_wlanini.cpp b/code/components/jomjol_wlan/read_wlanini.cpp
index e1a9f8c9..07f2cbd4 100644
--- a/code/components/jomjol_wlan/read_wlanini.cpp
+++ b/code/components/jomjol_wlan/read_wlanini.cpp
@@ -211,7 +211,7 @@ bool ChangeHostName(std::string fn, std::string _newhostname)
 
     while ((line.size() > 0) || !(feof(pFile)))
     {
-        printf("%s", line.c_str());
+        ESP_LOGD(TAG, "%s", line.c_str());
         zerlegt = ZerlegeZeileWLAN(line, "=");
         zerlegt[0] = trim(zerlegt[0], " ");
 
@@ -244,7 +244,7 @@ bool ChangeHostName(std::string fn, std::string _newhostname)
 
     for (int i = 0; i < neuesfile.size(); ++i)
     {
-        printf(neuesfile[i].c_str());
+        ESP_LOGD(TAG, "%s", neuesfile[i].c_str());
         fputs(neuesfile[i].c_str(), pFile);
     }