When this low temperature alarm runs, it's supposed to print the start time, the temperature, humidity, then when it rea

[/RaspberryPi]

##

​

import sys

import time

from time import sleep # Import Sleep module from time library

import subprocess

import Adafruit_DHT # Import the Adafruit_DHT module

from datetime import datetime

t = time.localtime()

current_time = time.strftime("%H:%M:%S", t)

​

pin = 4 # Set pin to pin 4

dly = 2 # Set delay to 2000ms (2 seconds) Can be changed to 1 for DHT22

sensor_type = 22 # Sensor type: Change this to 22 if using DHT22, or leave

# at 11 for DHT11

​

TEMPLIMIT = 18.333 #60 Degrees in Celcius before conversion

​

print (current_time)

​

try:

while True:

# Introduce our delay

sleep(dly)

​

# Read from sensor

humidity, temperature = Adafruit_DHT.read_retry(sensor_type, pin)

​

# Sensor defaults to Celsius, convert to Fahrenheit.

fahrenheit = (temperature * 1.8) + 32

celsius = temperature

​

# Check if data from sensor read is valid. Print data if it is. Else, fail.

if humidity is not None or temperature is not None:

print ("Temperature: {0:0.1f} Humidity: {1:0.1f}% ".format(fahrenheit, humidity))

​

​

else:

print ("Cannot read from device")

​

​

#Play sound when temperature drops below limit

if temperature < TEMPLIMIT:

print (current_time)

subprocess.run(['vlc', '/home/pi/lowtempwarning.mp3'])

​

​

except KeyboardInterrupt:

sys.exit()
submitted by /u/jamfan03
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Source: https://www.reddit.com/r/raspberry_pi/c ... _supposed/