diff --git a/src/.vscode/extensions.json b/src/.vscode/extensions.json
new file mode 100644
index 00000000..080e70d0
--- /dev/null
+++ b/src/.vscode/extensions.json
@@ -0,0 +1,10 @@
+{
+    // See http://go.microsoft.com/fwlink/?LinkId=827846
+    // for the documentation about the extensions.json format
+    "recommendations": [
+        "platformio.platformio-ide"
+    ],
+    "unwantedRecommendations": [
+        "ms-vscode.cpptools-extension-pack"
+    ]
+}
diff --git a/src/.vscode/settings.json b/src/.vscode/settings.json
index 841ff790..6af36bae 100644
--- a/src/.vscode/settings.json
+++ b/src/.vscode/settings.json
@@ -21,6 +21,9 @@
     // https://clang.llvm.org/docs/ClangFormatStyleOptions.html
     "C_Cpp.clang_format_fallbackStyle": "{ BasedOnStyle: Google, IndentWidth: 4, ColumnLimit: 0}",
     "files.associations": {
-        "typeinfo": "cpp"
+        "typeinfo": "cpp",
+        "string": "cpp",
+        "istream": "cpp",
+        "ostream": "cpp"
     },
 }
\ No newline at end of file
diff --git a/src/app.cpp b/src/app.cpp
index 443e7fcb..4da010ef 100644
--- a/src/app.cpp
+++ b/src/app.cpp
@@ -287,7 +287,7 @@ void app::setupMqtt(void) {
         mMqttActive = true;
 
     if(mMqttActive)
-        mMqtt.setup(&mConfig->mqtt, mConfig->sys.deviceName, mVersion, mSys, &mUtcTimestamp);
+        mMqtt.setup(this, &mConfig->mqtt, mConfig->sys.deviceName, mVersion, mSys, &mUtcTimestamp);
 }
 
 //-----------------------------------------------------------------------------
diff --git a/src/web/html/api.js b/src/web/html/api.js
index 0a194634..3db0002e 100644
--- a/src/web/html/api.js
+++ b/src/web/html/api.js
@@ -31,6 +31,23 @@ function parseESP(obj) {
     document.getElementById("esp_type").innerHTML="Board: " + obj["esp_type"];
 }
 
+function parseSysInfo(obj) {
+    document.getElementById("sdkversion").innerHTML=    "SDKv.: " + obj["sdk_version"];
+    document.getElementById("cpufreq").innerHTML=       "CPU MHz: " + obj["cpu_freq"] + "MHz";
+    document.getElementById("chiprevision").innerHTML=  "Rev.: " + obj["chip_revision"];
+    document.getElementById("chipmodel").innerHTML=     "Model: " + obj["chip_model"];
+    document.getElementById("chipcores").innerHTML=     "Core: " + obj["chip_cores"];
+    document.getElementById("esp_type").innerHTML=      "Type: " + obj["esp_type"];
+
+    document.getElementById("heap_used").innerHTML=     "Used: " + obj["heap_used"];
+    document.getElementById("heap_total").innerHTML=      "Total: " + obj["heap_total"];
+}
+
+function changeProgressbar(id, value, max) {
+    document.getElementById(id).value = value;
+    document.getElementById(id).max = max;
+}
+
 function setHide(id, hide) {
     var elm = document.getElementById(id);
     if(hide) {
diff --git a/src/web/html/system.html b/src/web/html/system.html
index 4e47a18c..c48c1d64 100644
--- a/src/web/html/system.html
+++ b/src/web/html/system.html
@@ -17,7 +17,18 @@
             <div id="topnav" class="hide"></div>
         </div>
         <div id="wrapper">
-            <div id="content"></div>
+            <div id="content">
+                <ul>
+                    <li>Heap:<progress id="heap" max="100" value="70"></progress> <span id="heap_used"></span>(<span id="heap_total"></span>)</li>
+                    <li><span id="sdkversion"></span></li>
+                    <li><span id="cpufreq"></span></li>
+                    <li><span id="chiprevision"></span></li>
+                    <li><span id="chipmodel"></span></li>
+                    <li><span id="chipcores"></span></li>
+                    <li><span id="esp_type"></span></li>
+                </ul>
+                <div id="system"></div>
+            </div>
         </div>
         <div id="footer">
             <div class="left">
@@ -39,13 +50,15 @@
             function parseSys(obj) {
                 parseVersion(obj);
                 parseESP(obj);
+                changeProgressbar("heap", obj["heap_used"], obj["heap_total"]);
             }
 
             function parse(obj) {
                 if(null != obj) {
                     parseMenu(obj["menu"]);
                     parseSys(obj["system"]);
-                    var e = document.getElementById("content");
+                    parseSysInfo(obj["system"]);
+                    var e = document.getElementById("system");
                     e.innerHTML = obj["html"];
 
                     if(null != obj["refresh"]) {
diff --git a/src/web/mqtt.h b/src/web/mqtt.h
index 8402599b..87a93b01 100644
--- a/src/web/mqtt.h
+++ b/src/web/mqtt.h
@@ -38,16 +38,17 @@ class mqtt {
 
         ~mqtt() { }
 
-        void setup(cfgMqtt_t *cfg, const char *devName, const char *version, HMSYSTEM *sys, uint32_t *utcTs) {
+        void setup(app *app, cfgMqtt_t *cfg_mqtt, const char *devName, const char *version, HMSYSTEM *sys, uint32_t *utcTs) {
             DPRINTLN(DBG_VERBOSE, F("mqtt.h:setup"));
             mAddressSet = true;
 
-            mCfg          = cfg;
-            mDevName      = devName;
-            mSys          = sys;
-            mUtcTimestamp = utcTs;
+            mApp            = app;
+            mCfg_mqtt       = cfg_mqtt;
+            mDevName        = devName;
+            mSys            = sys;
+            mUtcTimestamp   = utcTs;
 
-            mClient->setServer(mCfg->broker, mCfg->port);
+            mClient->setServer(mCfg_mqtt->broker, mCfg_mqtt->port);
             mClient->setBufferSize(MQTT_MAX_PACKET_SIZE);
 
             setCallback(std::bind(&mqtt<HMSYSTEM>::cbMqtt, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
@@ -75,7 +76,7 @@ class mqtt {
             //DPRINTLN(DBG_VERBOSE, F("mqtt.h:sendMsg"));
             if(mAddressSet) {
                 char top[66];
-                snprintf(top, 66, "%s/%s", mCfg->topic, topic);
+                snprintf(top, 66, "%s/%s", mCfg_mqtt->topic, topic);
                 sendMsg2(top, msg, false);
             }
         }
@@ -173,21 +174,21 @@ class mqtt {
                 if(strlen(mDevName) > 0) {
                     // der Server und der Port müssen neu gesetzt werden,
                     // da ein MQTT_CONNECTION_LOST -3 die Werte zerstört hat.
-                    mClient->setServer(mCfg->broker, mCfg->port);
+                    mClient->setServer(mCfg_mqtt->broker, mCfg_mqtt->port);
                     mClient->setBufferSize(MQTT_MAX_PACKET_SIZE);
 
                     char lwt[MQTT_TOPIC_LEN + 7 ]; // "/uptime" --> + 7 byte
-                    snprintf(lwt, MQTT_TOPIC_LEN + 7, "%s/uptime", mCfg->topic);
+                    snprintf(lwt, MQTT_TOPIC_LEN + 7, "%s/uptime", mCfg_mqtt->topic);
 
-                    if((strlen(mCfg->user) > 0) && (strlen(mCfg->pwd) > 0))
-                        resub = mClient->connect(mDevName, mCfg->user, mCfg->pwd, lwt, 0, false, "offline");
+                    if((strlen(mCfg_mqtt->user) > 0) && (strlen(mCfg_mqtt->pwd) > 0))
+                        resub = mClient->connect(mDevName, mCfg_mqtt->user, mCfg_mqtt->pwd, lwt, 0, false, "offline");
                     else
                         resub = mClient->connect(mDevName, lwt, 0, false, "offline");
                         // ein Subscribe ist nur nach einem connect notwendig
                     if(resub) {
                         char topic[MQTT_TOPIC_LEN + 13 ]; // "/devcontrol/#" --> + 6 byte
                         // ToDo: "/devcontrol/#" is hardcoded
-                        snprintf(topic, MQTT_TOPIC_LEN + 13, "%s/devcontrol/#", mCfg->topic);
+                        snprintf(topic, MQTT_TOPIC_LEN + 13, "%s/devcontrol/#", mCfg_mqtt->topic);
                         DPRINTLN(DBG_INFO, F("subscribe to ") + String(topic));
                         mClient->subscribe(topic); // subscribe to mTopic + "/devcontrol/#"
                     }
@@ -226,6 +227,13 @@ class mqtt {
 
             sendMsg("uptime", val);
 
+            sendMsg("wifi_rssi", String(WiFi.RSSI()).c_str());
+
+            String sunrise = String(mApp->getSunrise());
+            String sunset = String(mApp->getSunset());
+            sendMsg("sunrise", sunrise.c_str());
+            sendMsg("sunset", sunset.c_str());
+
             while(!mSendList.empty()) {
                 memset(total, 0, sizeof(float) * 4);
                 for (uint8_t id = 0; id < mSys->getNumInverters(); id++) {
@@ -427,13 +435,14 @@ class mqtt {
             DPRINTLN(DBG_INFO, F("app::cbMqtt finished"));
         }
 
+        app *mApp;
         WiFiClient mEspClient;
         PubSubClient *mClient;
         HMSYSTEM *mSys;
         uint32_t *mUtcTimestamp;
 
         bool mAddressSet;
-        cfgMqtt_t *mCfg;
+        cfgMqtt_t *mCfg_mqtt;
         const char *mDevName;
         uint32_t mLastReconnect;
         uint32_t mTxCnt;
diff --git a/src/web/webApi.cpp b/src/web/webApi.cpp
index f445f176..5596e96c 100644
--- a/src/web/webApi.cpp
+++ b/src/web/webApi.cpp
@@ -153,6 +153,21 @@ void webApi::getSysInfo(JsonObject obj) {
     obj[F("ts_sun_upd")]  = mApp->getLatestSunTimestamp();
     obj[F("wifi_rssi")]   = WiFi.RSSI();
     obj[F("pwd_set")]     = (strlen(mConfig->sys.adminPwd) > 0);
+
+    obj[F("hostname")]      = WiFi.getHostname();
+    obj[F("sdk_version")]    = ESP.getSdkVersion();
+    obj[F("cpu_freq")]       = ESP.getCpuFreqMHz();
+
+    obj[F("heap_total")]    = ESP.getHeapSize();
+    obj[F("heap_used")]     = ESP.getHeapSize() - ESP.getFreeHeap();
+    obj[F("sketch_total")]  = ESP.getFreeSketchSpace();
+    obj[F("sketch_used")]   = ESP.getSketchSize();
+    //obj[F("littlefs_total")] = LittleFS.totalBytes();
+    //obj[F("littlefs_used")] = LittleFS.usedBytes();
+
+    obj[F("chip_revision")]  = ESP.getChipRevision();
+    obj[F("chip_model")]     = ESP.getChipModel();
+    obj[F("chip_cores")]     = ESP.getChipCores();
 #if defined(ESP32)
     obj[F("esp_type")]    = F("ESP32");
 #else
diff --git a/src/wifi/ahoywifi.cpp b/src/wifi/ahoywifi.cpp
index 8ba34529..1d684bbe 100644
--- a/src/wifi/ahoywifi.cpp
+++ b/src/wifi/ahoywifi.cpp
@@ -113,6 +113,12 @@ void ahoywifi::setupAp(const char *ssid, const char *pwd) {
     DPRINTLN(DBG_VERBOSE, F("app::setupAp"));
     IPAddress apIp(192, 168, 4, 1);
 
+    DBGPRINTLN(F("\n---------\nAhoy Info:"));
+    DBGPRINT(F("Version: "));
+    DBGPRINTLN(String(VERSION_MAJOR) + F(".") + String(VERSION_MINOR) + F(".") + String(VERSION_PATCH));
+    DBGPRINT(F("Github Hash: "));
+    DBGPRINTLN(String(AUTO_GIT_HASH));
+
     DBGPRINT(F("\n---------\nAP MODE\nSSID: "));
     DBGPRINTLN(ssid);
     DBGPRINT(F("PWD: "));
@@ -120,6 +126,8 @@ void ahoywifi::setupAp(const char *ssid, const char *pwd) {
     DBGPRINT(F("\nActive for: "));
     DBGPRINT(String(WIFI_AP_ACTIVE_TIME));
     DBGPRINTLN(F(" seconds"));
+
+    DBGPRINTLN("\nIp Address: " + apIp[0] + apIp[1] + apIp[2] + apIp[3]);
     DBGPRINTLN(F("\n---------\n"));
 
     WiFi.mode(WIFI_AP);