RPi.DHT 0.5.0

Pre-Installation requirements

• Update system and install required dependencies:

  sudo apt-get update

RPi.DHT needs Adafruit Python DHT Sensor Library. Make sure your system is able to compile Python extensions. On Raspbian or Debian/Ubuntu image you can ensure your system is ready by executing:

sudo apt-get install build-essential python3-dev python3-pip

Installation

• Install the latest released version using pip:

  pip install https://github.com/ricco386/RPi.DHT/tarball/master/

• Alternatively install latest released version from pypi:

  pip install --upgrade RPi.DHT

Integration as a systemd service

• Make sure all dependencies (listed below) are installed (done automatically when installing via pip)

• The raspi-dht command should be installed somewhere in your PATH (done automatically when installing via pip), make sure raspi-dht.service has corect path in ExecStart set to raspi-dht executable.

• Systemd scripts are available: https://github.com/ricco386/RPi.DHT/tree/master/init.d to install them you will need root privileges, so we execute them as sudo:

  sudo cp init.d/raspi-dht.conf /etc/tmpfiles.d/
  sudo cp init.d/raspi-dht.service /etc/systemd/system/
  sudo systemd-tmpfiles --create /etc/tmpfiles.d/raspi-dht.conf
  sudo systemctl enable raspi-dht.service  # Enable service to start at system boot
  sudo systemctl start raspi-dht.service  # Start

Systemd scripts should be run under default Raspberry Pi user (pi), scripts have to be able access GPIO.

Dependencies:

• Adafruit_DHT

• RPi.Sensor (0.5.3+)

Usage

You have to create a .sensor.cfg file and place into /home/pi/.sensor.cfg you can find example file in RPi.Sensor repo: https://github.com/ricco386/RPi.Sensor/blob/master/raspi_sensor/sensor.cfg.example and create section [DHT] where you can override default values.

raspi-dht also support multiple parameters to overwrite config parameters. For more info run:

raspi-dht --help

License

For more information see the LICENSE file.