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co2monitor

Automatic data logging for AirCO2ntrol mini USB co2 measurement devices.

Hint: This application is compatible with Raspbian.

Note: This application is in development state.

Background

Hendryk Plötz reverse-engineered the usb protocol on hackaday.io. I wanted to have an easy-to-use plug'n'play data logging solution for Debian/Ubuntu systems. That's what co2monitor is.

Debian package

There are ready-to-use debian packages on the releases page, you may download the latest release there.

For automatic updates, you may use my apt repository.

To build a debian package from the repository, run dpkg-buildpackage -us -uc (options mean without signing) from the repository root. There will be a co2monitor_*.deb one folder layer above.

Installation

Install the debian package via sudo dpkg -i co2monitor_*.deb. Older versions of co2monitor will automatically be removed.

If you use my apt repository, install co2monitor like any other package via sudo apt-get update && sudo apt-get install co2monitor

Remove co2monitor from your system via sudo apt-get remove co2monitor.

Folder structure

The folder structure (etc,lib,usr,var) is based on the FHS and will be installed as-is to the target system.

important files

file	purpose
etc/co2monitor/service.conf	co2monitor service configuration file
usr/bin/co2monitor-service	the co2monitor service executable
usr/bin/co2monitor	the co2monitor application executable
var/lib/co2monitor/data/*	standard folder for logged co2 data

Special thanks

• Hendryk Plötz on hackaday.io for the device interaction
• Mike Kazantsev on his blog on fraggod.net for the systemd integration
• Ascot on StackOverflow.com for a workaround on signal.signal(signal, handler) when using a GLib.MainLoop
• don_crissti on StackOveflow.com for getting a list of dbus objects