Read from DHT11 sensor [home][amenities]

08/12/2019

Enable I2C and SPI as described here, then

pi@raspberrypi:~ $ sudo apt install libgpiod2
pi@raspberrypi:~ $ python3 -m pip install adafruit-circuitpython-dht

As in this, connect the DHT11 to the pi's right pins (pin 4 for data stream)

this is my case

and run

import time
import board
import adafruit_dht

dhtDevice = adafruit_dht.DHT11(board.D4)
while True:
    try:
        temperature_c = dhtDevice.temperature
        temperature_f = temperature_c * (9 / 5) + 32
        humidity = dhtDevice.humidity
        print("Temp: {:.1f} F / {:.1f} C    Humidity: {}% "
              .format(temperature_f, temperature_c, humidity))
    except RuntimeError as error:
        time.sleep(1.0)
    time.sleep(2.0)

to get

Temp: 75.2 F / 24.0 C    Humidity: 26%
Temp: 75.2 F / 24.0 C    Humidity: 27%
Temp: 75.2 F / 24.0 C    Humidity: 25%