`co2mon`

A driver for the Holtek CO₂ USB monitors, tested using a TFA-Dostmann AIRCO2TROL MINI sensor.

Permissions

On Linux, you need to be able to access the USB HID device. For that, you can save the following udev rule to /etc/udev/rules.d/60-co2mon.rules:

ACTION=="add|change", SUBSYSTEMS=="usb", ATTRS{idVendor}=="04d9", ATTRS{idProduct}=="a052", MODE:="0666"

Then reload the rules and trigger them:

udevadm control --reload
udevadm trigger

Note that the udev rule above makes the device accessible to every local user.

cargo run --example watch

Release notes are available in CHANGELOG.md.

The USB HID protocol is not documented, but was reverse-engineered before.

The implementation was inspired by this one.

This project is licensed under either of

at your option.

Name	Latest commit message	Commit time
Failed to load latest commit information.
co2mon	Add some use statements in the example	Feb 3, 2019
zg-co2	(cargo-release) version 0.1.0-alpha.2	Feb 1, 2019
.gitignore	Intial version	Feb 1, 2019
.travis.yml	Try to enable Windows and MacOS CI	Feb 2, 2019
Cargo.toml	Intial version	Feb 1, 2019
LICENSE-APACHE	Intial version	Feb 1, 2019
LICENSE-MIT	Intial version	Feb 1, 2019
README.md	Intial version	Feb 1, 2019