diff --git a/arduino/arduino.ino b/arduino/arduino.ino
new file mode 100644
index 0000000..461e2ba
--- /dev/null
+++ b/arduino/arduino.ino
@@ -0,0 +1,137 @@
+#include <Wire.h>
+#include <Adafruit_Sensor.h>
+#include <Adafruit_BMP280.h>
+#include <DHT.h>
+
+// ================= SENSOR AKTIVIERUNG =================
+#define USE_DHT22   1
+#define USE_RAIN    1
+#define USE_BMP280  0   // statt USE_SOIL
+
+// ================= DHT22 =================
+#define DHT22PIN 4
+#define DHT22TYPE DHT22
+DHT dht22(DHT22PIN, DHT22TYPE);
+
+// ================= Regenmodul =================
+const int rainAnalogPin = A1;
+const int rainDigitalPin = 2;
+
+// ================= BMP280 =================
+Adafruit_BMP280 bmp;
+
+// ---------------- SENSOR FUNKTIONEN ----------------
+
+#if USE_DHT22
+void readDHT22(float &temp, float &hum) {
+  temp = dht22.readTemperature();
+  hum  = dht22.readHumidity();
+}
+#endif
+
+#if USE_RAIN
+void readRainSensor(int &analogValue, int &digitalValue) {
+  analogValue = analogRead(rainAnalogPin);
+  digitalValue = digitalRead(rainDigitalPin);
+}
+#endif
+
+#if USE_BMP280
+void readBMP280(float &pressure) {
+  pressure = bmp.readPressure() / 100.0F; // Pa → hPa
+}
+#endif
+
+// ---------------- JSON BUILDER ----------------
+
+String buildJSON(float t22, float h22,
+                 int rainA, int rainD,
+                 float pressure) {
+
+  String json = "{";
+
+  // ===== DHT22 =====
+  json += "\"dht22\":{";
+  json += "\"temp\":" + String(t22, 2) + ",";
+  json += "\"hum\":" + String(h22, 2);
+  json += "},";
+
+  // ===== Regen =====
+  json += "\"rain\":{";
+  json += "\"analog\":" + String(rainA) + ",";
+  json += "\"wet\":";
+  json += (rainD == LOW ? "true" : "false");
+  json += "},";
+
+  // ===== BMP280 =====
+  json += "\"bmp280\":{";
+  json += "\"pressure\":" + String(pressure, 2);
+  json += "}";
+
+  json += "}";
+
+  return json;
+}
+
+// ---------------- SETUP ----------------
+
+void setup() {
+  Serial.begin(9600);
+
+#if USE_DHT22
+  dht22.begin();
+#endif
+
+#if USE_RAIN
+  pinMode(rainDigitalPin, INPUT);
+#endif
+
+#if USE_BMP280
+  /*if (!bmp.begin(0x77)) {
+    Serial.println("BMP280 nicht gefunden!");
+  }*/
+
+  bool bmp_ok = false;
+
+
+  bmp_ok = bmp.begin(0x76);
+
+  if (!bmp_ok) {
+    bmp_ok = bmp.begin(0x77);
+  }
+
+  if (bmp_ok) {
+    Serial.println("BMP280 OK");
+  } else {
+    Serial.println("BMP280 NICHT GEFUNDEN");
+  }
+#endif
+
+  Serial.println("System gestartet...");
+}
+
+// ---------------- LOOP ----------------
+
+void loop() {
+  delay(2000);
+
+  float t22 = 0, h22 = 0;
+  int rainA = 0, rainD = 0;
+  float pressure = 0;
+
+#if USE_DHT22
+  readDHT22(t22, h22);
+#endif
+
+#if USE_RAIN
+  readRainSensor(rainA, rainD);
+#endif
+
+#if USE_BMP280
+  readBMP280(pressure);
+#endif
+
+  String json = buildJSON(t22, h22, rainA, rainD, pressure);
+
+  Serial.println(json);
+}
\ No newline at end of file
diff --git a/arduino/arduino/arduino.ino b/arduino/arduino/arduino.ino
deleted file mode 100644
index 45a2b5c..0000000
--- a/arduino/arduino/arduino.ino
+++ /dev/null
@@ -1,99 +0,0 @@
-#include <DHT.h>
-
-// ================= DHT22 =================
-#define DHT22PIN 4
-#define DHT22TYPE DHT22
-DHT dht22(DHT22PIN, DHT22TYPE);
-
-// ================= DHT11 (deaktiviert) =================
-// #define DHT11PIN 3
-// #define DHT11TYPE DHT11
-// DHT dht11(DHT11PIN, DHT11TYPE);
-
-// ================= Regensensor =================
-const int rainAnalogPin = A5;
-const int rainDigitalPin = 2;
-
-// ---------------- SETUP ----------------
-void setup() {
-  Serial.begin(9600);
-
-  dht22.begin();
-  // dht11.begin(); // deaktiviert
-
-  pinMode(rainDigitalPin, INPUT);
-
-  Serial.println("System gestartet...");
-}
-
-// ---------------- LOOP ----------------
-void loop() {
-  delay(2000);
-
-  readDHT22();
-  // readDHT11(); // deaktiviert
-  readRainSensor();
-
-  Serial.println("------------------------");
-}
-
-
-void readDHT22() {
-  float temp = dht22.readTemperature();
-  float hum  = dht22.readHumidity();
-
-  Serial.println("DHT22:");
-
-  if (isnan(temp) || isnan(hum)) {
-    Serial.println("  Fehler beim Lesen!");
-    return;
-  }
-
-  Serial.print("  Temperatur: ");
-  Serial.print(temp);
-  Serial.println(" °C");
-
-  Serial.print("  Feuchte: ");
-  Serial.print(hum);
-  Serial.println(" %");
-}
-
-
-/*
-void readDHT11() {
-  float temp = dht11.readTemperature();
-  float hum  = dht11.readHumidity();
-
-  Serial.println("DHT11:");
-
-  if (isnan(temp) || isnan(hum)) {
-    Serial.println("  Fehler beim Lesen!");
-    return;
-  }
-
-  Serial.print("  Temperatur: ");
-  Serial.print(temp);
-  Serial.println(" °C");
-
-  Serial.print("  Feuchte: ");
-  Serial.print(hum);
-  Serial.println(" %");
-}
-*/
-
-
-void readRainSensor() {
-  int analogValue = analogRead(rainAnalogPin);
-  int digitalValue = digitalRead(rainDigitalPin);
-
-  Serial.println("Regenmodul:");
-
-  Serial.print("  Analogwert: ");
-  Serial.println(analogValue);
-
-  if (digitalValue == LOW) {
-    Serial.println("  Regen erkannt!");
-  } else {
-    Serial.println("  Kein Regen");
-  }
-}
\ No newline at end of file
diff --git a/verkabelung.txt b/verkabelung.txt
new file mode 100644
index 0000000..54d4ede
--- /dev/null
+++ b/verkabelung.txt
@@ -0,0 +1,19 @@
+DHT22:
+
++ Modul   <-> 3,3V Breadboard (über vertikale Schiene)
+Out Modul <-> D4 Arduino
+- Modul   <-> GND Breadboard (über vertikale Schiene)
+
+Regenmodul:
+
+A0 Modul  <-> A5 Arduino 
+D0 Modul  <-> D2 Arduino
+GND Modul <-> GND Breadboard (über vertikale Schiene)
+VCC Modul <-> V3,3 Breadboard (über vertikale Schiene)
+
+BMP22:
+
+VCC Modul <-> 3,3V Breadboard (direkt Phasenschiene)
+GND Modul <-> GND Breadboard (direkt an Erdungsschiene)
+SCL Modul <-> SCL Arduino
+SDA Modul <-> SDA Arduino
\ No newline at end of file