Problem solved in Adafruit-Blinka 8.61.2. I just ununstall 8.60.0 andre-run the install again

(env) termometer@raspberrypi:~/dht22 $ python3 dht_basic.py
Traceback (most recent call last):
File “/home/termometer/dht22/dht_basic.py”, line 5, in
import board
File “/home/termometer/dht22/env/lib/python3.11/site-packages/board.py”, line 21, in
from adafruit_blinka.agnostic import board_id, detector
ModuleNotFoundError: No module named ‘adafruit_blinka’

The dht library is installed as the recmmended:

(env) termometer@raspberrypi:~/dht22 $ python3 -m pip install adafruit-circuitpython-dht
Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Requirement already satisfied: adafruit-circuitpython-dht in ./env/lib/python3.11/site-packages (4.0.9)
Requirement already satisfied: Adafruit-Blinka in ./env/lib/python3.11/site-packages (from adafruit-circuitpython-dht) (8.60.0)
Requirement already satisfied: Adafruit-PlatformDetect>=3.70.1 in ./env/lib/python3.11/site-packages (from Adafruit-Blinka->adafruit-circuitpython-dht) (3.80.0)
Requirement already satisfied: Adafruit-PureIO>=1.1.7 in ./env/lib/python3.11/site-packages (from Adafruit-Blinka->adafruit-circuitpython-dht) (1.1.11)
Requirement already satisfied: RPi.GPIO in ./env/lib/python3.11/site-packages (from Adafruit-Blinka->adafruit-circuitpython-dht) (0.7.1)
Requirement already satisfied: rpi_ws281x>=4.0.0 in ./env/lib/python3.11/site-packages (from Adafruit-Blinka->adafruit-circuitpython-dht) (5.0.0)
Requirement already satisfied: sysv_ipc>=1.1.0 in ./env/lib/python3.11/site-packages (from Adafruit-Blinka->adafruit-circuitpython-dht) (1.1.0)
Requirement already satisfied: pyftdi>=0.40.0 in ./env/lib/python3.11/site-packages (from Adafruit-Blinka->adafruit-circuitpython-dht) (0.56.0)
Requirement already satisfied: binho-host-adapter>=0.1.6 in ./env/lib/python3.11/site-packages (from Adafruit-Blinka->adafruit-circuitpython-dht) (0.1.6)
Requirement already satisfied: adafruit-circuitpython-typing in ./env/lib/python3.11/site-packages (from Adafruit-Blinka->adafruit-circuitpython-dht) (1.12.1)
Requirement already satisfied: lgpio>=0.2.2.0 in ./env/lib/python3.11/site-packages (from Adafruit-Blinka->adafruit-circuitpython-dht) (0.2.2.0)
Requirement already satisfied: pyserial in ./env/lib/python3.11/site-packages (from binho-host-adapter>=0.1.6->Adafruit-Blinka->adafruit-circuitpython-dht) (3.5)
Requirement already satisfied: pyusb!=1.2.0,>=1.0.0 in ./env/lib/python3.11/site-packages (from pyftdi>=0.40.0->Adafruit-Blinka->adafruit-circuitpython-dht) (1.3.1)
Requirement already satisfied: adafruit-circuitpython-busdevice in ./env/lib/python3.11/site-packages (from adafruit-circuitpython-typing->Adafruit-Blinka->adafruit-circuitpython-dht) (5.2.13)
Requirement already satisfied: adafruit-circuitpython-requests in ./env/lib/python3.11/site-packages (from adafruit-circuitpython-typing->Adafruit-Blinka->adafruit-circuitpython-dht) (4.1.13)
Requirement already satisfied: typing_extensions~=4.0 in ./env/lib/python3.11/site-packages (from adafruit-circuitpython-typing->Adafruit-Blinka->adafruit-circuitpython-dht) (4.14.0)
Requirement already satisfied: Adafruit-Circuitpython-ConnectionManager in ./env/lib/python3.11/site-packages (from adafruit-circuitpython-requests->adafruit-circuitpython-typing->Adafruit-Blinka->adafruit-circuitpython-dht) (3.1.5)

Hi,

I am following the tutorial – I had to use thr pulseio=False fix to get it working, but now I get: “A Full Buffer was not returned”. I am using a DHT11 sensor…

Any Ideas?

Many thanks,

Rem

I would be happy with some help

Best Regards
Faris

Hi Sara, I use a Pi 3B+ with OS 64bit from 2023-12-05. I did a complete new installation. Kind regards Dieter

Hi.
Can you tell me which Raspberry Pi and which OS are you using?
We didn’t need to run that on our setup.

Regards,
Sara

else showing error:
ModuleNotFoundError: No module named ‘RPi’

Hi Sara, thanks for your support. The re-installation of the gpio lib solved the problem. As a work around I upfront your hint modified the sketch in that way that it worked without the ‚import board‘ statement. Thanks again ! Dieter

Hi.
I’m not sure about that error message.
I didn’t face that issue with my setup.
Taking a look at this discussion: https://github.com/adafruit/Adafruit_CircuitPython_DHT/issues/29
It is suggested to run the following command:
sudo apt-get install libgpiod2

Let me know if this solves the issue.
Regards,
Sara

/home/kdbeer/mu_code/DHT11/myenv/lib/python3.9/site-packages/adafruit_blinka/microcontroller/bcm283x/pulseio/libgpiod_pulsein64: error while loading shared libraries: libgpiod.so.2: cannot open shared object file: No such file or directory

Traceback (most recent call last):
File “/home/kdbeer/mu_code/DHT11/DHT11_basic.py”, line 11, in
sensor = adafruit_dht.DHT11(board.D4)
File “/home/kdbeer/mu_code/DHT11/myenv/lib/python3.9/site-packages/adafruit_dht.py”, line 294, in init
super().init(True, pin, 18000, use_pulseio)
File “/home/kdbeer/mu_code/DHT11/myenv/lib/python3.9/site-packages/adafruit_dht.py”, line 86, in init
self.pulse_in = PulseIn(self._pin, maxlen=self._max_pulses, idle_state=True)
File “/home/kdbeer/mu_code/DHT11/myenv/lib/python3.9/site-packages/adafruit_blinka/microcontroller/bcm283x/pulseio/PulseIn.py”, line 89, in init
message = self._wait_receive_msg(timeout=0.25)
File “/home/kdbeer/mu_code/DHT11/myenv/lib/python3.9/site-packages/adafruit_blinka/microcontroller/bcm283x/pulseio/PulseIn.py”, line 107, in _wait_receive_msg
raise RuntimeError(
RuntimeError: Timed out waiting for PulseIn message. Make sure libgpiod is installed.
can you give me hint how to solve it ?

Thanks for helping !