plug2mqtt

Publish smart plug state to MQTT. Specifically and currently this works for P110 only.

Install

• clone the repository to /srv/plug2mqtt
• create Python environment

  cd /srv/plug2mqtt
  python3 -m venv venv

• install requirements

  . ./venv/bin/activate
  python3 -m pip install -r requirements.txt

• install the service

  sudo cp /srv/plug2mqtt/plug2mqtt.service /etc/systemd/system/
  sudo systemctl enable plug2mqtt
  sudo systemctl daemon-reload
  sudo systemctl start plug2mqtt
  systemctl status plug2mqtt

Prometheus

If the metrics published are to be available in Prometheus, the MQTT exporter configuration in /etc/prometheus/mqtt-exporter.yaml needs to be augmented with:

matrics:
  -
    # The name of the metric in prometheus
    prom_name: power
    # The name of the metric in a MQTT JSON message
    mqtt_name: current_power
    # The prometheus help text for this metric
    help: power in Watts
    # The prometheus type for this metric. Valid values are: "gauge" and "counter"
    type: gauge

Setup

The plugs.json configuration file should look like this:

[
  {
    "topic": "devices/plug/kitchen",
    "username": "foo@bar",
    "password": "Changeme",
    "hostname": "foo.iot"
  },
  {
    "topic": "devices/plug/cellar",
    "username": "foo@bar",
    "password": "Changeme",
    "hostname": "bar.iot"
  },
]

Opionally, the config can be extended with abitrary dictionary, like so:

[
  {
    "topic": "devices/plug/kitchen",
    "username": "foo@bar",
    "password": "Changeme",
    "hostname": "foo.iot",
    "data": {"foo", "bar"}
  }
]