Python :: Python + Piface เช็คอุหภูมิปิดเปิดแอร์ Auto

Python :: Python + Piface เช็คอุณหภูมิปิดเปิดแอร์ Auto
1. ติดตั้ง OS
2. ติดตั้ง Python

1. sudo apt-get install python{,3}-pifacedigitalio

3. ติดตั้ง library สำหรับ Run python เช็คอุณหภูมิ https://learn.adafruit.com/dht-humidity ... ll-updated

1. git clone https://github.com/adafruit/Adafruit_Python_DHT.git

1. cd Adafruit_Python_DHT

1. sudo apt-get update

1. sudo apt-get install build-essential python-dev python-openssl

1. sudo python setup.py instal

l
4. สร้างไฟล์ checkair.py ด้วยคำสั่ง

1. nano checkair.py

ใส่ code

1.                                                                                               
2. #!/usr/bin/python
3. #### Check temperature Adafruit_DHT 22 23 #######
4. import sys
5.  
6. import Adafruit_DHT
7.  
8. # Parse command line parameters.
9. # Use This.
10. #sensor_args = { '11': Adafruit_DHT.DHT11,
11. #                                '22': Adafruit_DHT.DHT22,
12. #                                '2302': Adafruit_DHT.AM2302 }
13. #if len(sys.argv) == 3 and sys.argv[1] in sensor_args:
14. #        sensor = sensor_args[sys.argv[1]]
15. #        pin = sys.argv[2]
16. #else:
17. #        print 'usage: sudo ./Adafruit_DHT.py [11|22|2302] GPIOpin#'
18. #        print 'example: sudo ./Adafruit_DHT.py 2302 4 - Read from an AM2302 connected to GPIO #4'
19. #        sys.exit(1)
20.  
21. # Try to grab a sensor reading.  Use the read_retry method which will retry up
22. # to 15 times to get a sensor reading (waiting 2 seconds between each retry).
23. #humidity, temperature = Adafruit_DHT.read_retry(sensor, pin)
24. humidity, temperature = Adafruit_DHT.read_retry(22, 23)
25.  
26.  
27. # Un-comment the line below to convert the temperature to Fahrenheit.
28. # temperature = temperature * 9/5.0 + 32
29.  
30. # Note that sometimes you won't get a reading and
31. # the results will be null (because Linux can't
32. # guarantee the timing of calls to read the sensor).  
33. # If this happens try again!
34. if humidity is not None and temperature is not None:
35.         print 'Temp={0:0.1f}*  Humidity={1:0.1f}%'.format(temperature, humidity)
36. else:
37.         print 'Failed to get reading. Try again!'
38.         sys.exit(1)
39.  
40. #### Opne and Close Relay By Piface  #####
41.  
42. import pifacedigitalio
43. pf = pifacedigitalio.PiFaceDigital()
44.  
45. #pf.leds[1].turn_on()
46. #pf.leds[2].turn_on()
47. #pf.leds[3].turn_on()
48. #pf.leds[4].turn_on()
49. #pf.leds[5].turn_on()
50. #pf.leds[6].turn_on()
51. #pf.leds[7].turn_on()
52. #### ON #####
53. import smtplib
54.  
55. if temperature > 27:
56.         pf.relays[1].turn_on()
57.         pf.relays[0].turn_on()
58.  
59.         from smtplib import SMTP
60.  
61.         recipients = ['suwit.jph@gmail.com', '"komkid@gmail.com', 'nontiwaza@gmail.com']
62.  
63.         def send_email (message, status):
64.                 fromaddr = 'mail'
65.                 server = SMTP('smtp.gmail.com:587')
66.                 server.ehlo()
67.                 server.starttls()
68.                 server.ehlo()
69.                 server.login('mail', 'password')
70.                 server.sendmail(fromaddr, recipients, 'Subject: %s\r\n%s' % (status, message))
71.                 server.quit()
72.  
73.         send_email("High temp alert! in Server Room A. " '{0:0.1f}*C'.format(temperature), "High temp alert! Turn ON relays.")
74. else:
75.         pf.relays[0].turn_off()
76.         pf.relays[1].turn_off()
77.  
78.         #from smtplib import SMTP
79.  
80.         #recipients = ['suwit.jph@gmail.com', '"komkid@gmail.com', 'nontiwaza@gmail.com']
81.  
82.         #def send_email (message, status):
83.         #        fromaddr = 'mail'
84.         #        server = SMTP('smtp.gmail.com:587')
85.         #        server.ehlo()
86.         #        server.starttls()
87.         #        server.ehlo()
88.         #        server.login('mail', 'password')
89.         #        server.sendmail(fromaddr, recipients, 'Subject: %s\r\n%s' % (status, message))
90.         #        server.quit()
91.         #send_email("Temp alert! in Server Room A. " '{0:0.1f}*C'.format(temperature), "Temp alert! Turn OFF Relays.")
92.  
93. pf.deinit_board()
94.  
95.  

5. Run ไฟล์ py ด้วยคำสั่ง

1. ./checkair.py 22 23

6. ตั้งให้ Run ตามเวลาใน crontab

1. crontab -e

เพิ่มเวลาที่ต้องการให้ run เข้าไป
*/5 * * * * ./checkair.py 22 23

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