sielaff2mqtt

sielaff2mqtt

A simple go util to publish the state of a sielaff vending machine to mqtt - for integration into a home assistant installation.

Tested and used in the temporärhaus with a Sielaff (Robimat) GF SiLine M on firmware 0.13.6.

Usage

Compilation:

GOARCH=arm GOARM=7 GOOS=linux go build main.go

Run on the vending machine:

MQTT_BROKER=tcp://192.168.0.10:1883 MQTT_USERNAME=matemat MQTT_PASSWORD=mqttpassword ./main

Features

Currently detecting changes in the following dbus signals:

• signal path=/; interface=com.sielaff.siline.payment; member=vendEnabled (Vending Enabled)
• signal path=/; interface=com.sielaff.siline.hmi; member=serviceMenuActivated (Service Menu Active)
• signal path=/MachineControl; interface=com.sielaff.siline.machine.MachineControl; member=sensorValue (Cooling Temperature)

Publishes the following mqtt topics:

• homeassistant/binary_sensor/matematvend/config - home assistant mqtt discovery
• sielaff2mqtt/matematvend/availability
• sielaff2mqtt/matematvend/state
• homeassistant/binary_sensor/matematservicemenu/config - home assistant mqtt discovery
• sielaff2mqtt/matematservicemenu/availability
• sielaff2mqtt/matematservicemenu/state
• homeassistant/sensor/matematcoolingtemperature/config - home assistant mqtt discovery
• sielaff2mqtt/matematcoolingtemperature/availability
• sielaff2mqtt/matematcoolingtemperature/state

You can change sielaff2mqtt by setting the MQTT_PREFIX environment variable or using the --prefix flag.

TODO

• Add more sensors
• Make mqtt device name configurable
• Implement device part of home assistant mqtt discovery

How to add new sensors

Run dbus-monitor --system on your vending machine and look out for the signal lines.