`dht22-sensor-monitor.py`

Raspberry Pi Smart Display Module · File : dht22-sensor-monitor.py · Language : Python · Use case : Lire les données de température et d'humidité d'un capteur DHT22 connecté en GPIO.

Uses the Adafruit DHT library to read environmental data from a DHT22 sensor.

Hardware: Raspberry Pi Smart Display Module + DHT22 sensor. Wiring: VCC to 3.3V, GND to GND, Data to GPIO 4. Install libraries with 'pip install adafruit-circuitpython-dht'. Execution requires sudo for GPIO access. The script prints values every 2 seconds.

dht22-sensor-monitor.py

import board
import adafruit_dht
import time

# Le capteur DHT22 est connecté à GPIO 4 (BCM 4, physique 7)
dht_device = adafruit_dht.DHT22(board.D4)

try:
    while True:
        try:
            temperature = dht_device.temperature
            humidity = dht_device.humidity
            print(f"Température: {temperature:.1f}°C, Humidité: {humidity:.1f}%")
        except RuntimeError as e:
            print(f"Erreur de lecture: {e}")
        time.sleep(2)
except KeyboardInterrupt:
    dht_device.exit()
    print("Capteur désactivé")

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