DHT

cron.py

#!/home/pi/miniconda3/bin/python
from datetime import datetime
import sys
import Adafruit_DHT


def main():
    sensor = Adafruit_DHT.AM2302
    pin = 4
    record_file = '/home/pi/joel/dht_monitor/record/dht.csv'  # TODO: change to your own path

    timestr = datetime.now().strftime('%Y-%m-%d-%H:%M:%S')
    humidity = None
    temperature = None
    try:
        humidity, temperature = Adafruit_DHT.read_retry(
            sensor, pin, retries=5, delay_seconds=1)
    except ValueError as e:
        print('Encounter sensor problem')

    with open(record_file, 'a') as f:
        print('{},{},{}'.format(timestr, humidity, temperature), file=f)


if __name__ == '__main__':
    main()