diff --git a/_FIRMWARE/firmwares/Sonoff_Basic/Sonoff_Basic_v3/Sonoff_Basic_v3.ino b/_FIRMWARE/firmwares/Sonoff_Basic/Sonoff_Basic_v3/Sonoff_Basic_v3.ino
new file mode 100644
index 0000000..e0ee21d
--- /dev/null
+++ b/_FIRMWARE/firmwares/Sonoff_Basic/Sonoff_Basic_v3/Sonoff_Basic_v3.ino
@@ -0,0 +1,221 @@
+//Includes
+#include <ESP8266WiFi.h>
+#include <ESP8266HTTPClient.h>
+#include <ArduinoJson.h>
+#include <EEPROM.h>
+
+//Variables
+const char* ssid = "ssid";
+const char* pasw = "pasw";
+const char* hwId = "hwId";
+const char* server = "http://dev.steelants.cz/vasek/home/api.php";
+int unsuccessfulRounds = 0; //Unsucesful atmpt counter
+StaticJsonDocument<250> jsonContent;
+bool buttonActive = false;
+int interuptCount = 0;
+int realState = 1;
+int state = 0;
+String requestJson = "";
+
+//Pins
+#define SONOFF 12 //12
+#define SONOFF_LED 13
+#define SONOFF_BUT 0 //0
+
+void ICACHE_RAM_ATTR handleInterrupt ();
+
+void setup() {
+    Serial.begin(9600);
+    EEPROM.begin(1);
+    while (!Serial) continue;
+    delay(10);
+    Serial.println('\n');
+    Serial.println("HW: " + String(hwId));
+
+    pinMode(SONOFF_LED, OUTPUT);
+    pinMode(SONOFF_BUT, INPUT_PULLUP);
+    pinMode(SONOFF, OUTPUT);
+    state = EEPROM.read(0);
+    digitalWrite(SONOFF, state);
+    realState = state;
+
+    attachInterrupt(digitalPinToInterrupt(SONOFF_BUT), handleInterrupt, FALLING);
+
+
+    WiFi.persistent(false);
+    WiFi.mode(WIFI_STA);
+
+    WiFi.begin(ssid, pasw);
+    checkConnection();
+
+    Serial.println('\n');
+    Serial.println("Connection established!");
+    Serial.print("IP address:");
+    Serial.println(WiFi.localIP());
+    Serial.print("MAC address:");
+    Serial.println(WiFi.macAddress());
+    
+    jsonContent = {};
+    jsonContent["token"] = hwId;
+    jsonContent["values"]["on/off"]["value"] = (String)realState;
+    
+    serializeJson(jsonContent, requestJson);
+    Serial.println("JSON: " + requestJson);
+    DeserializationError error = deserializeJson(jsonContent, sendHttpRequest(requestJson));
+}
+
+void loop() {
+    if(unsuccessfulRounds >= 5) {
+      Serial.println("RESTARTING ESP");
+      ESP.restart();
+    }
+    jsonContent = {};
+    jsonContent["token"] = hwId;
+    requestJson = "";
+    if (buttonActive == true){
+      jsonContent["values"]["on/off"]["value"] = (String)!realState;
+      if (!realState == 1) {
+        digitalWrite(SONOFF, HIGH);
+        realState = 1;
+      } else if (!realState == 0){
+        digitalWrite(SONOFF, LOW);
+        realState = 0;
+      }
+      EEPROM.write(0, 0);
+      EEPROM.commit();
+      serializeJson(jsonContent, requestJson);
+      Serial.println("JSON: " + requestJson);
+
+      //HTTP CLIENT
+      DeserializationError error = deserializeJson(jsonContent, sendHttpRequest(requestJson));
+      buttonActive = false;
+    }
+    jsonContent = {};
+    jsonContent["token"] = hwId;
+    
+    requestJson = "";
+    serializeJson(jsonContent, requestJson);
+    Serial.println("JSON: " + requestJson);
+
+    //HTTP CLIENT
+    DeserializationError error = deserializeJson(jsonContent, sendHttpRequest(requestJson));
+    
+    if (error) {
+      Serial.println(error.c_str());
+      unsuccessfulRounds++;
+      Serial.println("UNSUCCESSFUL ROUND NUMBER " + String(unsuccessfulRounds) + "FROM 5");
+      return;
+    }
+    //configuration setup
+    String hostName = jsonContent["device"]["hostname"];
+    String ipAddress = jsonContent["device"]["ipAddress"];
+    String gateway = jsonContent["device"]["gateway"];
+    String subnet = jsonContent["device"]["subnet"];
+    String requestState = jsonContent["state"];
+    JsonObject object = jsonContent.as<JsonObject>();
+    if (!object["value"].isNull()) {
+      state = (int)jsonContent["value"];
+    }
+
+    if (requestState != "succes") {
+        unsuccessfulRounds++;
+        Serial.println("UNSUCCESSFUL ROUND NUMBER " + String(unsuccessfulRounds) + "FROM 5");
+    } else if (requestState == "succes") {
+        unsuccessfulRounds = 0;
+    }
+
+    //Set static ip
+    setStaticIp(ipAddress, gateway, subnet);
+    WiFi.hostname(hostName);
+    Serial.println("state: " + (String)state + ", realState: " + (String)realState);
+    if (state != realState){
+        if (state == 1 && realState == 0) {
+            Serial.println("ON state: " + (String)state + ", realState: " + (String)realState);
+            digitalWrite(SONOFF, HIGH);   // Turn the LED on by making the voltage LOW
+            realState = 1;
+        } else if (state == 0 && realState == 1) {
+            Serial.println("OFF");
+            digitalWrite(SONOFF, LOW);   // Turn the LED on by making the voltage LOW
+            realState = 0;
+        }
+        EEPROM.write(0, realState);
+        EEPROM.commit();
+    }
+}
+
+void handleInterrupt() {
+    interuptCount++;
+    buttonActive = true;
+}
+
+String sendHttpRequest (String requestJson) {
+    HTTPClient http;
+    http.setReuse(true);
+    http.begin(server);
+    http.addHeader("Content-Type", "text/plain");  //Specify content-type header
+
+    int httpCode = http.POST(requestJson);
+    String payload = http.getString();  //Get the response payload
+    http.end();
+
+    Serial.println("HTTP CODE: " + String(httpCode) + ""); //Print HTTP return code
+    Serial.println("HTTP BODY: " + String(payload) + "");  //Print request response payload
+
+    if (httpCode == -1) {
+      unsuccessfulRounds++;
+      Serial.println("UNSUCCESSFUL ROUND NUMBER " + String(unsuccessfulRounds) + "FROM 5");
+      return "";
+    }
+    return payload;
+}
+
+bool checkConnection() {
+    int count = 0;
+    Serial.print("Waiting for Wi-Fi connection");
+    while ( count < 30 ) {
+      if (buttonActive == true){
+        if (!realState == 1) {
+          digitalWrite(SONOFF, HIGH);
+          realState = 1;
+        } else if (!realState == 0){
+          digitalWrite(SONOFF, LOW);
+          realState = 0;
+        }
+        EEPROM.write(0, realState);
+        EEPROM.commit();
+        buttonActive = false;
+      }
+      digitalWrite(SONOFF_LED, HIGH);
+      delay(125);
+      digitalWrite(SONOFF_LED, LOW);
+      delay(125);
+      if (WiFi.status() == WL_CONNECTED) {
+          Serial.println();
+          Serial.println("Connected!");
+          digitalWrite(SONOFF_LED, HIGH);
+          return (true);
+      }
+      Serial.print(".");
+      count++;
+    }
+    Serial.println("Timed out.");
+    return false;
+}
+
+void setStaticIp(String ipAddress, String subnet, String gateway){
+  //Set static ip
+  IPAddress staticIpAddress;
+  IPAddress subnetIpAddress;
+  IPAddress gatewayIpAddress;
+
+  if (
+    staticIpAddress.fromString(ipAddress) &&
+    subnetIpAddress.fromString(subnet) &&
+    gatewayIpAddress.fromString(gateway) &&
+    WiFi.localIP() != staticIpAddress
+  ) {
+      WiFi.config(staticIpAddress, subnetIpAddress, gatewayIpAddress);
+      Serial.print("STATIC IP address:");
+      Serial.println(WiFi.localIP());
+  }
+}