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co2meter_exporter

CO2 Meter state exporter to use with https://prometheus.io/

Keep track of CO2 level around you to stay productive!

Picture of cheap co2meter

CO2 meters supported

All devices that report as USB-zyTemp should in theory be supported.

Bus 001 Device 004: ID 04d9:a052 Holtek Semiconductor, Inc. USB-zyTemp

I've played with this one. All of them look more or less same and don't cost too much. Some of them will also report humidity, most will not.

It is best to power this device via Raspberry Pi in-the-middle, so no extra power supply is needed.

Running in a docker container

Raspberry Pi and docker are great friends. Just run docker container and you will have Prometheus exporter at no cost!

docker run -dt -p 2112:2112/tcp --name co2meter_exporter --restart unless-stopped --privileged imple/co2meter_exporter:latest

Downloading and building for ARMv7 (Raspberry Pi 2 and newer)

go get github.com/rnurgaliyev/co2meter_exporter
env GOOS=linux GOARCH=arm go build github.com/rnurgaliyev/co2meter_exporter

Transfer binary to your Raspberry Pi and you are ready to go.

Running and serving metrics

~ ./co2monitor --help
co2meter_exporter

  Flags:
    -h --help             Displays help with available flag, subcommand, and positional value parameters.
    -d --device           Device to get readings from
    -b --bind             Address to listen on (default: 0.0.0.0)
    -p --port             Port number to listen on (default: 9200)
       --skipDecryption   Skip value decryption. This is needed for some CO2 meter models.

~ ./co2monitor -d /dev/hidraw0 -p 2112
2020/02/03 19:07:46 Listening on http://0.0.0.0:2112/metrics
2020/02/03 19:07:51 CO2 reading:  527
2020/02/03 19:07:51 Temperature reading:  19.48
2020/02/03 19:07:56 CO2 reading:  527
2020/02/03 19:07:56 Temperature reading:  19.48
2020/02/03 19:08:01 CO2 reading:  527
2020/02/03 19:08:01 Temperature reading:  19.48
2020/02/03 19:08:06 CO2 reading:  527
2020/02/03 19:08:06 Temperature reading:  19.48
2020/02/03 19:08:11 CO2 reading:  529

Get Prometheus, Grafana, and finish setup!

Screenshot