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Chromecast MQTT-smarthome connector

Fork of nohum's chromecast-mqtt-connector using topic naming convetion from mqtt-smarthome.

Usage

Control behaviour by defining ENV variables MQTT_HOST, MQTT_PORT, MQTT_USER, MQTT_PASSWORD, MQTT_CAFILE.

git clone 
pip3 install -r requirements.txt
MQTT_HOST=10.1.1.50 python3 connector.py

Docker

docker run -d --net=host -e "MQTT_HOST=10.1.1.100" dersimn/chromecast-mqtt-smarthome-connector

Discovery and control

Using MQTT you can find the following topics. FRIENDLY_NAME is the name used to connect to each Chromecast.

chromecast/maintenance/_bridge/online -> bool

chromecast/maintenance/FRIENDLY_NAME/online -> bool
chromecast/maintenance/FRIENDLY_NAME/connection_status -> string
chromecast/maintenance/FRIENDLY_NAME/cast_type -> string

chromecast/status/FRIENDLY_NAME/current_app -> string

chromecast/status/FRIENDLY_NAME/volume -> JSON
chromecast/set   /FRIENDLY_NAME/volume -> float
chromecast/set   /FRIENDLY_NAME/volume/muted -> bool

chromecast/status/FRIENDLY_NAME/player -> JSON
chromecast/set   /FRIENDLY_NAME/player -> string
chromecast/set   /FRIENDLY_NAME/player/position -> int

chromecast/status/FRIENDLY_NAME/media -> JSON

Change volume using values from 0 to 1.0:

  • Publish e.g. 1.0 to chromecast/set/FRIENDLY_NAME/volume

Change mute state: publish false or true to chromecast/set/FRIENDLY_NAME/volume/muted.

Play something: Publish a json array with two elements (content url and content type) to chromecast/set/FRIENDLY_NAME/player, e.g. ["http://your.stream.url.here", "audio/mpeg"]. You can also just publish a URL to player_state (just as string, not as json array, e.g. http://your.stream.url.here), the application then tries to guess the required MIME type.

For other player controls, simply publish e.g. RESUME, PAUSE, STOP, SKIP or REWIND to chromecast/set/FRIENDLY_NAME/player. Attention: This is case-sensitive!

Development / Debug

docker build

docker build -t chromecast-mqtt-smarthome-connector .

Cross-build (for Raspberry Pi):

docker buildx create --name mybuilder
docker buildx use mybuilder
docker buildx build \
    --platform linux/amd64,linux/arm/v7 \
    -t dersimn/chromecast-mqtt-smarthome-connector \
    -t dersimn/chromecast-mqtt-smarthome-connector:1 \
    -t dersimn/chromecast-mqtt-smarthome-connector:1.3 \
    -t dersimn/chromecast-mqtt-smarthome-connector:1.3.2 \
    --push .