update: working correctly now. Chnaged for four channel active low relay module.

src/InfluxDBModule.cpp

@@ -8,7 +8,7 @@ bool InfluxDBModule::connectToInfluxDB() {
     return client.validateConnection();
 }
 
-bool InfluxDBModule::sendData(float current, float busVoltage, float power, float avgPower, float totalEnergy, int relay1State, int relay2State) {
+bool InfluxDBModule::sendData(float current, float busVoltage, float power, float avgPower, float totalEnergy, int relay1State, int relay2State, int relay3State, int relay4State) {
     Point sensorData("sensor_data");
     sensorData.addTag("device", "ESP32");
     sensorData.addField("current", current);
@@ -18,6 +18,8 @@ bool InfluxDBModule::sendData(float current, float busVoltage, float power, floa
     sensorData.addField("totalEnergy", totalEnergy);
     sensorData.addField("relay1StateINT", relay1State);
     sensorData.addField("relay2StateINT", relay2State);
+    sensorData.addField("relay3StateINT", relay3State);
+    sensorData.addField("relay4StateINT", relay4State);
 
     return client.writePoint(sensorData);
 }

src/InfluxDBModule.h

@@ -9,7 +9,7 @@ class InfluxDBModule {
 public:
     InfluxDBModule(String url, String org, String bucket, String token);
     bool connectToInfluxDB();
-    bool sendData(float current, float busVoltage, float power, float avgPower, float totalEnergy, int relay1State, int relay2State);
+    bool sendData(float current, float busVoltage, float power, float avgPower, float totalEnergy, int relay1State, int relay2State, int relay3State, int relay4State);
 private:
     InfluxDBClient client;
 };

src/WebServerModule.h

@@ -31,7 +31,7 @@ private:
   bool fourthRelayState;
   int _relayPin;
   int _secondRelayPin;
-  int _thirdrelayPin;
+  int _thirdRelayPin;
   int _fourthRelayPin;
   
   void handleRoot(AsyncWebServerRequest *request);

src/WebserverModule.cpp

@@ -3,14 +3,14 @@
 
 WebServerModule::WebServerModule(INA219Module& inaModule, int relayPin, int secondRelayPin, int thirdRelayPin, int fourthRelayPin)
   : _inaModule(inaModule), _server(80), _relayPin(relayPin), _secondRelayPin(secondRelayPin),
-    _thirdrelayPin(thirdRelayPin), _fourthRelayPin(fourthRelayPin), relayState(false), secondRelayState(false),
+    _thirdRelayPin(thirdRelayPin), _fourthRelayPin(fourthRelayPin), relayState(false), secondRelayState(false),
     thirdrelayState(false), fourthRelayState(false) {}
 
 void WebServerModule::begin() {
   // Configure pins for relays as outputs
   pinMode(_relayPin, OUTPUT);
   pinMode(_secondRelayPin, OUTPUT);
-  pinMode(_thirdrelayPin, OUTPUT);
+  pinMode(_thirdRelayPin, OUTPUT);
   pinMode(_fourthRelayPin, OUTPUT);
 
   // Configure server endpoints
@@ -108,48 +108,74 @@ void WebServerModule::handleRoot(AsyncWebServerRequest *request) {
   html += "<p>Leistung: <span id='power_W'></span> W</p>";
   html += "<p>Durchschnittliche Leistung: <span id='avgPower_W'></span> W</p>";
   html += "<p>Gesamtenergie: <span id='totalEnergy'></span> Wh</p>";
-  // JavaScript-Code für die Werteaktualisierung und Schaltersteuerung (unchanged)
+  // // JavaScript-Code für die Werteaktualisierung und Schaltersteuerung (unchanged)
-  html += "<script>setInterval(updateValues, 5000);";
+  // html += "<script>setInterval(updateValues, 5000);";
+  // html += "function updateValues() { fetch('/values').then(response => response.json()).then(data => {";
+  // html += "document.getElementById('current_A').textContent = data.current_A;";
+  // html += "document.getElementById('busVoltage_V').textContent = data.busVoltage_V;";
+  // html += "document.getElementById('power_W').textContent = data.power_W;";
+  // html += "document.getElementById('avgPower_W').textContent = data.avgPower_W;";
+  // html += "document.getElementById('totalEnergy').textContent = data.totalEnergy;";
+  // html += "}); }</script>";
+
+  // JavaScript-Code für die Werteaktualisierung und Schaltersteuerung
+  html += "<script>setInterval(updateValues, 1000);"; // Update values every second
   html += "function updateValues() { fetch('/values').then(response => response.json()).then(data => {";
   html += "document.getElementById('current_A').textContent = data.current_A;";
   html += "document.getElementById('busVoltage_V').textContent = data.busVoltage_V;";
   html += "document.getElementById('power_W').textContent = data.power_W;";
   html += "document.getElementById('avgPower_W').textContent = data.avgPower_W;";
   html += "document.getElementById('totalEnergy').textContent = data.totalEnergy;";
+
+  // Update toggle states
+  html += "document.getElementById('relaySwitch1').checked = data.relay1State;";
+  html += "document.getElementById('relaySwitch2').checked = data.relay2State;";
+  html += "document.getElementById('relaySwitch3').checked = data.relay3State;";
+  html += "document.getElementById('relaySwitch4').checked = data.relay4State;";
+
   html += "}); }</script>";
-  // Schalter 1 (K1) to Schalter 4 (K4) (unchanged)
+
+
+  // Schalter 1 (K1)
   html += "<div class='toggle-container'>";
   html += "<label class='toggle-label'>Relais 1</label>";
   html += "<label class='toggle'>";
-  html += "<input type='checkbox' id='relaySwitch1' onchange='toggleRelay(1, this.checked)'>";
+  html += "<input type='checkbox' id='relaySwitch1' onchange='toggleRelay(1, this.checked)' " + String(getRelayState() ? "checked" : "") + ">";
   html += "<span class='slider'></span>";
   html += "<span class='inner-slider'></span>";
   html += "</label>";
   html += "</div>";
+
+  // Schalter 2 (K2)
   html += "<div class='toggle-container'>";
   html += "<label class='toggle-label'>Relais 2</label>";
   html += "<label class='toggle'>";
-  html += "<input type='checkbox' id='relaySwitch2' onchange='toggleRelay(2, this.checked)'>";
+  html += "<input type='checkbox' id='relaySwitch2' onchange='toggleRelay(2, this.checked)' " + String(getSecondRelayState() ? "checked" : "") + ">";
   html += "<span class='slider'></span>";
   html += "<span class='inner-slider'></span>";
   html += "</label>";
   html += "</div>";
+
+  // Schalter 3 (K3)
   html += "<div class='toggle-container'>";
   html += "<label class='toggle-label'>Relais 3</label>";
   html += "<label class='toggle'>";
-  html += "<input type='checkbox' id='relaySwitch3' onchange='toggleRelay(3, this.checked)'>";
+  html += "<input type='checkbox' id='relaySwitch3' onchange='toggleRelay(3, this.checked)' " + String(getThirdRelayState() ? "checked" : "") + ">";
   html += "<span class='slider'></span>";
   html += "<span class='inner-slider'></span>";
   html += "</label>";
   html += "</div>";
+
+  // Schalter 4 (K4)
   html += "<div class='toggle-container'>";
   html += "<label class='toggle-label'>Relais 4</label>";
   html += "<label class='toggle'>";
-  html += "<input type='checkbox' id='relaySwitch4' onchange='toggleRelay(4, this.checked)'>";
+  html += "<input type='checkbox' id='relaySwitch4' onchange='toggleRelay(4, this.checked)' " + String(getFourthRelayState() ? "checked" : "") + ">";
   html += "<span class='slider'></span>";
   html += "<span class='inner-slider'></span>";
   html += "</label>";
   html += "</div>";
+
   // JavaScript-Code für die Schaltersteuerung (unchanged)
   html += "<script>";
   html += "function toggleRelay(relay, state) {";
@@ -164,14 +190,22 @@ void WebServerModule::handleRoot(AsyncWebServerRequest *request) {
   request->send(200, "text/html", html);
 }
 
-
-
 void WebServerModule::handleValues(AsyncWebServerRequest *request) {
+  // String values = "{\"current_A\":" + String(_inaModule.getCurrent()) + ",";
+  // values += "\"busVoltage_V\":" + String(_inaModule.getBusVoltage()) + ",";
+  // values += "\"power_W\":" + String(_inaModule.getPower()) + ",";
+  // values += "\"avgPower_W\":" + String(_inaModule.calculateAveragePower()) + ",";
+  // values += "\"totalEnergy\":" + String(_inaModule.getTotalEnergy()) + "}";
+
   String values = "{\"current_A\":" + String(_inaModule.getCurrent()) + ",";
   values += "\"busVoltage_V\":" + String(_inaModule.getBusVoltage()) + ",";
   values += "\"power_W\":" + String(_inaModule.getPower()) + ",";
   values += "\"avgPower_W\":" + String(_inaModule.calculateAveragePower()) + ",";
-  values += "\"totalEnergy\":" + String(_inaModule.getTotalEnergy()) + "}";
+  values += "\"totalEnergy\":" + String(_inaModule.getTotalEnergy()) + ",";
+  values += "\"relay1State\":" + String(getRelayState() ? 1 : 0) + ",";
+  values += "\"relay2State\":" + String(getSecondRelayState() ? 1 : 0) + ",";
+  values += "\"relay3State\":" + String(getThirdRelayState() ? 1 : 0) + ",";
+  values += "\"relay4State\":" + String(getFourthRelayState() ? 1 : 0) + "}";
   request->send(200, "application/json", values);
 }
 
@@ -179,7 +213,7 @@ void WebServerModule::handleToggle(AsyncWebServerRequest *request) {
   if (request->hasParam("state")) {
     int state = request->getParam("state")->value().toInt();
     relayState = state;
-    digitalWrite(_relayPin, relayState ? HIGH : LOW);
+    digitalWrite(_relayPin, relayState ? LOW : HIGH);
 
     Serial.print("Relay 1 state set to: ");
     Serial.println(relayState);
@@ -194,7 +228,7 @@ void WebServerModule::handleSecondToggle(AsyncWebServerRequest *request) {
   if (request->hasParam("state")) {
     int state = request->getParam("state")->value().toInt();
     secondRelayState = state;
-    digitalWrite(_secondRelayPin, secondRelayState ? HIGH : LOW);
+    digitalWrite(_secondRelayPin, secondRelayState ? LOW : HIGH);
 
     Serial.print("Relay 2 state set to: ");
     Serial.println(secondRelayState);
@@ -209,7 +243,7 @@ void WebServerModule::handleThirdToggle(AsyncWebServerRequest *request) {
   if (request->hasParam("state")) {
     int state = request->getParam("state")->value().toInt();
     thirdrelayState = state;
-    digitalWrite(_thirdrelayPin, thirdrelayState ? HIGH : LOW);
+    digitalWrite(_thirdRelayPin, thirdrelayState ? LOW : HIGH);
 
     Serial.print("Relay 3 state set to: ");
     Serial.println(thirdrelayState);
@@ -224,7 +258,7 @@ void WebServerModule::handleFourthToggle(AsyncWebServerRequest *request) {
   if (request->hasParam("state")) {
     int state = request->getParam("state")->value().toInt();
     fourthRelayState = state;
-    digitalWrite(_fourthRelayPin, fourthRelayState ? HIGH : LOW);
+    digitalWrite(_fourthRelayPin, fourthRelayState ? LOW : HIGH);
 
     Serial.print("Relay 4 state set to: ");
     Serial.println(fourthRelayState);
@@ -235,22 +269,24 @@ void WebServerModule::handleFourthToggle(AsyncWebServerRequest *request) {
   }
 }
 
-bool WebServerModule::getThirdRelayState() const {
-  return thirdrelayState;
-}
-
-bool WebServerModule::getFourthRelayState() const {
-  return fourthRelayState;
-}
-
 void WebServerModule::handleToggleState(bool state) {
   relayState = state;
-  digitalWrite(_relayPin, relayState ? HIGH : LOW);
+  digitalWrite(_relayPin, relayState ? LOW : HIGH);  // Inverted logic for active LOW relay
 }
 
 void WebServerModule::handleSecondToggleState(bool state) {
   secondRelayState = state;
-  digitalWrite(_secondRelayPin, secondRelayState ? HIGH : LOW);
+  digitalWrite(_secondRelayPin, secondRelayState ? LOW : HIGH);  // Inverted logic for active LOW relay
+}
+
+void WebServerModule::handleThirdToggleState(bool state) {
+  thirdrelayState = state;
+  digitalWrite(_thirdRelayPin, thirdrelayState ? LOW : HIGH);  // Inverted logic for active LOW relay
+}
+
+void WebServerModule::handleFourthToggleState(bool state) {
+  fourthRelayState = state;
+  digitalWrite(_fourthRelayPin, fourthRelayState ? LOW : HIGH);  // Inverted logic for active LOW relay
 }
 
 bool WebServerModule::getRelayState() const {
@@ -260,3 +296,11 @@ bool WebServerModule::getRelayState() const {
 bool WebServerModule::getSecondRelayState() const {
   return secondRelayState;
 }
+
+bool WebServerModule::getThirdRelayState() const {
+  return thirdrelayState;
+}
+
+bool WebServerModule::getFourthRelayState() const {
+  return fourthRelayState;
+}

src/main.cpp

@@ -24,6 +24,12 @@ void readAndSendSensorData();
 void controlRelays();
 
 void setup() {
+  // setting relay pins first - needed for proper initialization of active low relays
+  digitalWrite(RELAY_PIN, HIGH);
+  digitalWrite(SECOND_RELAY_PIN, HIGH);
+  digitalWrite(THIRD_RELAY_PIN, HIGH);
+  digitalWrite(FOURTH_RELAY_PIN, HIGH);
+
   Serial.begin(115200);
   Serial.println("... init ...");
   Wire.begin();
@@ -49,6 +55,15 @@ void setup() {
 
   webServer.begin();
   Serial.println("Web server started");
+  float busVoltage = inaModule.getBusVoltage();
+  // Init: Relais einschalten, wenn die Spannung zwischen 11 und 13V liegt
+  if (busVoltage > 11.0 && busVoltage < 13.0)
+  {
+    Serial.println("Turning on relays due to good voltage condition...");
+    webServer.handleToggleState(true);       // Relay 1 einschalten
+    //webServer.handleSecondToggleState(true); // Relay 2 einschalten
+  }
+  Serial.println("... init done");
 
   Serial.println();
   Serial.println("......");
@@ -67,14 +82,23 @@ void readAndSendSensorData() {
   float power = inaModule.getPower();
   float avgPower = inaModule.calculateAveragePower();
   float totalEnergy = inaModule.getTotalEnergy();
+  
+  // Get relay states
   bool relay1State = webServer.getRelayState();
   bool relay2State = webServer.getSecondRelayState();
-  // Ändere die bool's zu Float-Werten
+  bool relay3State = webServer.getThirdRelayState();  // Assuming this method exists
+  bool relay4State = webServer.getFourthRelayState(); // Assuming this method exists
+  
+  // Convert bool relay states to int
   int relay1StateInt = relay1State ? 1 : 0;
   int relay2StateInt = relay2State ? 1 : 0;
+  int relay3StateInt = relay3State ? 1 : 0;
+  int relay4StateInt = relay4State ? 1 : 0;
 
-  influxDB.sendData(current, busVoltage, power, avgPower, totalEnergy, relay1StateInt , relay2StateInt );
+  // Send data to InfluxDB
+  influxDB.sendData(current, busVoltage, power, avgPower, totalEnergy, relay1StateInt, relay2StateInt, relay3StateInt, relay4StateInt);
 
+  // Print data to Serial for debugging
   Serial.print("current: ");
   Serial.print(current);
   Serial.println(" A");
@@ -100,21 +124,28 @@ void readAndSendSensorData() {
   Serial.println();
 }
 
-void controlRelays() {
+void controlRelays()
-    float power = inaModule.getPower();
+{
-    float busVoltage = inaModule.getBusVoltage();
+  float power = inaModule.getPower();
+  float busVoltage = inaModule.getBusVoltage();
 
-    // Zentrale Logik für die Relaissteuerung
+  // Zentrale Logik für die Relaissteuerung
-    if (power > 70.0) {
+  if (power > 50.0)
-        Serial.println("Overload condition detected...");
+  {
-        webServer.handleToggleState(false);  // Relay 1 ausschalten
+    Serial.println("Overload condition detected...");
-        webServer.handleSecondToggleState(false);  // Relay 2 ausschalten
+    webServer.handleToggleState(false);       // Relay 1 ausschalten
-    }
+    webServer.handleSecondToggleState(false); // Relay 2 ausschalten
+    webServer.handleThirdToggleState(false);  // Relay 3 ausschalten
+    webServer.handleFourthToggleState(false); // Relay 4 ausschalten
+  }
 
-    // Zusatz: Relais einschalten, wenn die Spannung zwischen 0 und 14V liegt
+  // Zusatz: Relais ausschalten, wenn die Spannung nicht zwischen 0 und 14V liegt
-    if (busVoltage > 0.0 && busVoltage < 14.0) {
+  if (!(busVoltage > 2.0 && busVoltage < 14.0))
-        Serial.println("Turning on relays due to voltage condition...");
+  {
-        webServer.handleToggleState(true);  // Relay 1 einschalten
+    Serial.println("Turning off relays due to bad voltage condition...");
-        webServer.handleSecondToggleState(true);  // Relay 2 einschalten
+    webServer.handleToggleState(false);       // Relay 1 ausschalten
-    }
+    webServer.handleSecondToggleState(false); // Relay 2 ausschalten
+    webServer.handleThirdToggleState(false); // Relay 3 ausschalten
+    webServer.handleFourthToggleState(false); // Relay 4 ausschalten
+  }
 }