onstar2mqtt
A service that utilizes the OnStarJS library to expose OnStar data to MQTT topics.
The functionality is mostly focused around EVs (specifically the Bolt EV), however PRs for other vehicle types are certainly welcome.
There is no affiliation with this project and GM, Chevrolet nor OnStar. In fact, it would be nice if they'd even respond to development requests so we wouldn't have to reverse engineer their API.
Running
Collect the following information:
- Generate a v4 uuid for the device ID
- OnStar login: username, password, PIN
- Your car's VIN. Easily found in the monthly OnStar diagnostic emails.
- MQTT server information: hostname, username, password
- If using TLS, define
MQTT_PORT
andMQTT_TLS=true
- If using TLS, define
Supply these values to the ENV vars below. The default data refresh interval is 30 minutes and can be overridden with ONSTAR_REFRESH with values in milliseconds.
Docker
docker run \
--env ONSTAR_DEVICEID= \
--env ONSTAR_VIN= \
--env ONSTAR_USERNAME= \
--env ONSTAR_PASSWORD= \
--env ONSTAR_PIN= \
--env MQTT_HOST= \
--env MQTT_USERNAME \
--env MQTT_PASSWORD \
michaelwoods/onstar2mqtt:latest
docker-compose
onstar2mqtt:
container_name: onstar2mqtt
image: michaelwoods/onstar2mqtt
restart: unless-stopped
env_file:
- /srv/containers/secrets/onstar2mqtt.env
environment:
- ONSTAR_DEVICEID=
- ONSTAR_VIN=
- MQTT_HOST=
onstar2mqtt.env:
ONSTAR_USERNAME=
ONSTAR_PASSWORD=
ONSTAR_PIN=
MQTT_USERNAME=
MQTT_PASSWORD=
Node.js
It's a typical node.js application, define the same environment values as described in the docker sections and run with:
npm run start
. Currently, this is only tested with Node.js 18.x.
Home Assistant configuration templates
MQTT auto discovery is enabled. For further integrations and screenshots see HA-MQTT.md.
Development
Running
npm run start
Testing
npm run test
Coverage
npm run coverage
Releases
npm version [major|minor|patch] -m "Version %s" && git push --follow-tags
Publish the release on GitHub to trigger a release build (ie, update 'latest' docker tag).