Adafruit Library - temperature monitoring AM2302

3aRm · August 13, 2022 at 4:46 AM

Hi,

I am trying to monitor temperature with the Adafruit AM2302 sensor.

The sensor is connected to my LibreELEC 10.0.2 RPi4. For monitoring i setup icinga2 with check_by_ssh. This works for raspbian10/11.

Testing temperature read AdafruitDHT.py on my libreelec fails; I added libpath from this forum post but no luck:

Bash

LibreELEC:~/.kodi/addons/virtual.adafruit-libraries/lib/Adafruit_DHT # ./AdafruitDHT.py 2302 4
Traceback (most recent call last):
  File "./AdafruitDHT.py", line 43, in <module>
    humidity, temperature = Adafruit_DHT.read_retry(sensor, pin)
  File "/storage/.kodi/addons/virtual.adafruit-libraries/lib/Adafruit_DHT/common.py", line 94, in read_retry
    humidity, temperature = read(sensor, pin, platform)
  File "/storage/.kodi/addons/virtual.adafruit-libraries/lib/Adafruit_DHT/common.py", line 80, in read
    platform = get_platform()
  File "/storage/.kodi/addons/virtual.adafruit-libraries/lib/Adafruit_DHT/common.py", line 55, in get_platform
    from . import Raspberry_Pi_2
  File "/storage/.kodi/addons/virtual.adafruit-libraries/lib/Adafruit_DHT/Raspberry_Pi_2.py", line 22, in <module>
    from . import Raspberry_Pi_2_Driver as driver
ImportError: cannot import name 'Raspberry_Pi_2_Driver' from 'Adafruit_DHT' (/storage/.kodi/addons/virtual.adafruit-libraries/lib/Adafruit_DHT/__init__.py)

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I also tried pythonwrapper.sh and pasting different scripts to the Adafruit_DHT directory, but still no luck.

My python knowlegde is very limited, I am no developer. I can not tell if it's the library, a python2/3 problem or whatever else.

Could the library be updated or is there anything I can do?

**Da Flex** · August 14, 2022 at 5:48 AM

Replace the line

Code

import Adafruit_DHT

by

Code

sys.path.append('/storage/.kodi/addons/virtual.adafruit-libraries/lib')

3aRm · August 15, 2022 at 5:30 AM

Tried replacing it:

Python

LibreELEC:~/.kodi/addons/virtual.adafruit-libraries/lib/Adafruit_DHT # sed -n 22,29p AdafruitDHT.py 
# SOFTWARE.
import sys
sys.path.append('/storage/.kodi/addons/virtual.adafruit-libraries/lib')
#import Adafruit_DHT


# Parse command line parameters.
sensor_args = { '11': Adafruit_DHT.DHT11,
LibreELEC:~/.kodi/addons/virtual.adafruit-libraries/lib/Adafruit_DHT # ./AdafruitDHT.py 2302 4
./AdafruitDHT.py: line 23: import: not found
./AdafruitDHT.py: line 24: syntax error: unexpected word (expecting ")")
LibreELEC:~/.kodi/addons/virtual.adafruit-libraries/lib/Adafruit_DHT # ./pythonwrapper.sh ./AdafruitDHT.py 2302 4
Traceback (most recent call last):
  File "./AdafruitDHT.py", line 29, in <module>
    sensor_args = { '11': Adafruit_DHT.DHT11,
NameError: name 'Adafruit_DHT' is not defined
LibreELEC:~/.kodi/addons/virtual.adafruit-libraries/lib/Adafruit_DHT # nano AdafruitDHT.py 
LibreELEC:~/.kodi/addons/virtual.adafruit-libraries/lib/Adafruit_DHT # sed -n 22,29p AdafruitDHT.py 
# SOFTWARE.
import sys
sys.path.append('/storage/.kodi/addons/virtual.adafruit-libraries/lib')
import Adafruit_DHT


# Parse command line parameters.
sensor_args = { '11': Adafruit_DHT.DHT11,
LibreELEC:~/.kodi/addons/virtual.adafruit-libraries/lib/Adafruit_DHT # ./AdafruitDHT.py 2302 4
./AdafruitDHT.py: line 23: import: not found
./AdafruitDHT.py: line 24: syntax error: unexpected word (expecting ")")
LibreELEC:~/.kodi/addons/virtual.adafruit-libraries/lib/Adafruit_DHT # ./pythonwrapper.sh ./AdafruitDHT.py 2302 4
Traceback (most recent call last):
  File "./AdafruitDHT.py", line 42, in <module>
    humidity, temperature = Adafruit_DHT.read_retry(sensor, pin)
  File "/storage/.kodi/addons/virtual.adafruit-libraries/lib/Adafruit_DHT/common.py", line 94, in read_retry
    humidity, temperature = read(sensor, pin, platform)
  File "/storage/.kodi/addons/virtual.adafruit-libraries/lib/Adafruit_DHT/common.py", line 80, in read
    platform = get_platform()
  File "/storage/.kodi/addons/virtual.adafruit-libraries/lib/Adafruit_DHT/common.py", line 55, in get_platform
    from . import Raspberry_Pi_2
  File "/storage/.kodi/addons/virtual.adafruit-libraries/lib/Adafruit_DHT/Raspberry_Pi_2.py", line 22, in <module>
    from . import Raspberry_Pi_2_Driver as driver
ImportError: libpython2.7.so.1.0: cannot open shared object file: No such file or directory
LibreELEC:~/.kodi/addons/virtual.adafruit-libraries/lib/Adafruit_DHT #

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**Da Flex** · August 15, 2022 at 7:01 AM

You are correct with:

Code

import sys
sys.path.append('/storage/.kodi/addons/virtual.adafruit-libraries/lib')
import Adafruit_DHT

You get the error, because you try to run the Python 2 version of Adafruit DHT:

Code

ImportError: libpython2.7.so.1.0: cannot open shared object file: No such file or directory

Use "pip3" instead of "pip" to download the Python 3 version: pip3 install Adafruit_DHT

3aRm · August 15, 2022 at 1:50 PM

Quote from Da Flex

Use "pip3" instead of "pip" to download the Python 3 version: pip3 install Adafruit_DHT

I installed Adafruit_DHT as addon. How can I use pip3 on my libreelec10?

**Da Flex** · August 15, 2022 at 2:04 PM

Quote from 3aRm

I installed Adafruit_DHT as addon. How can I use pip3 on my libreelec10?

uninstall that add-on, it's not compatible
create the folder /storage/.kodi/userdata/library/Adafruit_DHT
copy this files into that folder (use wget <URL>) : Click!
then you can use the above method to access the libs in that folder