DHT22 not working for some time now

[DarkDabula]

Describe the bug Connected and working DHT22 reports no values inside OctoPrint. It worked before since some months ago.

To Reproduce

• Temperature and humidity show 0°C and 0%

Expected behavior

• Showing correct values of sensor.

Additional context Using OctoPrint 1.7.2 on a Rpi with Python 3.7. Getting errors in logfile

2021-11-29 18:03:13,123 - octoprint.server - INFO - ------------------------------------------------------------------------------
2021-11-29 18:03:13,200 - octoprint.plugins.enclosure - INFO - Failed to execute python scripts, try disabling use SUDO on advanced section of the plugin.
2021-11-29 18:03:13,201 - octoprint.plugins.enclosure - WARNING - An exception of type ValueError occurred on log_error. Arguments:
('not enough values to unpack (expected 2, got 1)',)
Traceback (most recent call last):
  File "/home/pi/oprint/lib/python3.7/site-packages/octoprint_enclosure/__init__.py", line 1113, in read_dht_temp
    temp, hum = stdout.decode("utf-8").split("|")
ValueError: not enough values to unpack (expected 2, got 1)

After debugging a little bit, I made some slight changes to the file "getDHTTemp.py" at two locations

...
import sys
# Change: case-sensitive
import Adafruit_DHT as adafruit_dht

...

# Another way to read data
humidity, temperature = adafruit_dht.read(sensor, pin)

...

With this fix al works fine again. Don't know what the problem is, maybe something with the Adafruit_DHT library.

Regards.

[Albertowue]

Look #448, the adafruit library has changed

[DarkDabula]

Hi, Thanks for the hint. I read #448 but I think its a little bit misleading. There "Adafruit_DHT" is declared as the new API and "adafruit_dht" as the old one. More confusing is that you also can use "Adafruit_DHT" with Python 3.

Whatever ... After installing the "adafruit_dht" with the instructions from Link I got the original version of "getDHTTemp.py" working.

Thanks

[Albertowue]

You are absolutely right, I corrected my post to create less confusion 😅