someone can help me to fix DHT11 with Raspberry pi i’m unable to utilise it no data is there only a fatal error
the terminal commands i used for DHT 11

sudo apt update && sudo apt upgrade

cd ~/Desktop

mkdir dht_test

cd ~/Desktop/dht_test

python3 -m venv myenv

ls -l
output
total 4
drwxrwxr-x 5 rpi rpi 4096 May 6 15:02 myenv

source myenv/bin/activate
output
rpi@raspberrypi:~/Desktop/dht_test $ source myenv/bin/activate
(myenv) rpi@raspberrypi:~/Desktop/dht_test $

python3 -m pip install adafruit-circuitpython-dht

code used-
import time
import board
import adafruit_dht

Sensor data pin is connected to GPIO 4

sensor = adafruit_dht.DHT22(board.D4)

Uncomment for DHT11

#sensor = adafruit_dht.DHT11(board.D4)

while True:
try:
# Print the values to the serial port
temperature_c = sensor.temperature
temperature_f = temperature_c * (9 / 5) + 32
humidity = sensor.humidity
print(“Temp={0:0.1f}ºC, Temp={1:0.1f}ºF, Humidity={2:0.1f}%”.format(temperature_c, temperature_f, humidity))

except RuntimeError as error:
# Errors happen fairly often, DHT's are hard to read, just keep going
print(error.args[0])
time.sleep(2.0)
continue
except Exception as error:
sensor.exit()
raise error

time.sleep(3.0)


error occur

%Run -c $EDITOR_CONTENT
Traceback (most recent call last):
File “”, line 2, in
ModuleNotFoundError: No module named ‘board’

someone suggest me how it can get fixed??

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