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temperhum.py

Python 3 program to read temperature and humidity from a TEMPerHUM USB sensor on a Raspberry Pi

Installation

In a Raspberry Pi, terminal or ssh session, run the following commands, you can ignore the first one, if you already have git installed.

  sudo apt-get install git
  git clone https://github.com/cjmair/temperhum.git
  cd temperhum
  ./install.sh

Usage

At a command prompt enter

  temperhum.py

This should return the temperature, in Celsius and the humidity, in the format below

  23.9C 38%

Optoins

Various options can be given on the command line, see the --help option listing below

  temperhum.py --help

  Usage: temperhum.py [OPTION]
  Reads the temperature and humidity from a PCSensor, TEMPerHum, USB sensor, USB ID 413d:2107

  --help          shows this :-)
  --version       displays version information and exits
  --f             output temperature in Fahrenheit, default is Celsius
  --nosymbols     do not show C, F or %
  --raw           include the raw data from the sensor in the output, as hex bytes
  --debug         turn on debugging output
  --reattach      if the usb device is attached to a kernel driver, default is to detach it,
                  and leave it that way, this option forces a reattach to the kernel driver on exit

for example

  temperhum.py --f --nosymbols

will return the temperature in Fahrenheit and the humidity, without any symbols, as below

  75.2 38