commit d2268f659c880544ee5ca523f454cd348bb6f6a7
Author: Mika <kontakt@donau2space.de>
Date:   Sun Feb 15 03:06:25 2026 +0000

    Add sensor_logging/src/sensor_logging/main.py

diff --git a/sensor_logging/src/sensor_logging/main.py b/sensor_logging/src/sensor_logging/main.py
new file mode 100644
index 0000000..2b39fd9
--- /dev/null
+++ b/sensor_logging/src/sensor_logging/main.py
@@ -0,0 +1,95 @@
+import json
+import argparse
+import os
+from datetime import datetime
+from pathlib import Path
+from typing import Any, Dict
+
+
+class SensorData:
+    """Repräsentiert einen Satz gemessener Sensordaten inklusive Zeitstempel."""
+
+    def __init__(self, voltage: float, temperature: float, humidity: float) -> None:
+        if not isinstance(voltage, (int, float)):
+            raise TypeError("voltage muss float sein")
+        if not isinstance(temperature, (int, float)):
+            raise TypeError("temperature muss float sein")
+        if not isinstance(humidity, (int, float)):
+            raise TypeError("humidity muss float sein")
+
+        self.timestamp = datetime.now().isoformat()
+        self.voltage = float(voltage)
+        self.temperature = float(temperature)
+        self.humidity = float(humidity)
+
+    def to_json(self) -> Dict[str, Any]:
+        """Serialisiert Sensordaten in ein JSON-kompatibles Dictionary."""
+        return {
+            "timestamp": self.timestamp,
+            "voltage": self.voltage,
+            "temperature": self.temperature,
+            "humidity": self.humidity,
+        }
+
+
+def log_sensor_data(voltage: float, temperature: float, humidity: float) -> None:
+    """Schreibt Sensordaten (Spannung, Temperatur, Luftfeuchte) mit Zeitstempel in eine Logdatei im JSON-Format."""
+    data = SensorData(voltage=voltage, temperature=temperature, humidity=humidity)
+    log_entry = data.to_json()
+
+    parser = argparse.ArgumentParser(description="Logge Sensordaten in eine JSON-Datei.")
+    parser.add_argument(
+        "--output",
+        required=False,
+        default="output/sensor_log.json",
+        help="Pfad zur Ausgabedatei für Sensordaten-Logs.",
+    )
+    args, _ = parser.parse_known_args()
+
+    output_path = Path(args.output)
+    output_path.parent.mkdir(parents=True, exist_ok=True)
+
+    logs = []
+    if output_path.exists():
+        try:
+            with open(output_path, "r", encoding="utf-8") as f:
+                logs = json.load(f)
+                if not isinstance(logs, list):
+                    logs = []
+        except (json.JSONDecodeError, FileNotFoundError):
+            logs = []
+
+    logs.append(log_entry)
+
+    with open(output_path, "w", encoding="utf-8") as f:
+        json.dump(logs, f, ensure_ascii=False, indent=2)
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(description="Erfasse und logge Sensordaten.")
+    parser.add_argument("--output", required=False, default="output/sensor_log.json", help="Pfad zur Logdatei.")
+    args = parser.parse_args()
+
+    # Hier könnte reale Sensorabfrage erfolgen (Adafruit Bibliotheken), placeholder für echte Integration
+    try:
+        import Adafruit_DHT
+        import adafruit_ads1x15.ads1115 as ADS
+        from adafruit_ads1x15.analog_in import AnalogIn
+        from busio import I2C
+        import board
+
+        DHT_SENSOR = Adafruit_DHT.DHT22
+        DHT_PIN = 4
+        humidity, temperature = Adafruit_DHT.read_retry(DHT_SENSOR, DHT_PIN)
+        i2c = I2C(board.SCL, board.SDA)
+        ads = ADS.ADS1115(i2c)
+        chan = AnalogIn(ads, ADS.P0)
+        voltage = chan.voltage * 1000.0  # in mV
+
+        if None in (humidity, temperature, voltage):
+            raise ValueError("Ungültige Sensordaten erfasst")
+
+    except Exception as e:
+        raise RuntimeError(f"Sensorabfrage fehlgeschlagen: {e}") from e
+
+    log_sensor_data(voltage=voltage, temperature=temperature, humidity=humidity)
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