How can I run my fan if temp/humid > 26c, 60%?

0
votes

Raspberry Pi, A2302 sensor, 5v fan

QN How can I request that my fan connected to GPIO 18 activates and stays active, until the temperature from my sensor at pin 5 reads either a temperature of less than 26 celcius, or a humidity of less than 60%?

#!/usr/bin/python
import time
import Adafruit_DHT
import RPi.GPIO as GPIO

sensor = Adafruit_DHT.AM2302
pin = 5
humidity, temperature = Adafruit_DHT.read_retry(sensor, pin)

if humidity is not None and temperature is not None:
   print('Temp={0:0.1f}*C  Humidity={1:0.1f}%'.format(temperature, humidity))
else:
   print('Failed to get reading. Try again!')

GPIO.setmode(GPIO.BCM)
GPIO.setup(18,GPIO.OUT)
GPIO.output(18, 1)
time.sleep(5)
GPIO.output(18, 0)
GPIO.cleanup()
1
pythonraspberry-pigpio

1 Answers

0
votes

I can't provide the actual code, but it seems like you just want to know the logic to use?

do the following once every minute (or however often): if temp< 26 turn off fan elseif hum < 60 turn off fan else keep fan on