gpio2mqtt's Introduction

gpio2mqtt

A server application to expose obscure devices to homeassistant via MQTT. Not many devices are currently supported as I basically use it exclusively for my own purposes and only use the ones that are implemented.

Currently supported:

Covers connected to GPIO via seperate Up, Down and Stop pins (you can for example solder wires to a VELUX Integra remote, see below)
VARTA Element Energy Storages via Sunspec-Modbus (probably also some others that are similar enough)

Example Config

Example config defining one cover and one sunspec device:

broker: 192.168.1.20
client_id: gpio2mqtt_bridge
covers:
    -   group_gpio_pause_ms: 1000
        devices:
            -   name: Velux 1
                chip: /dev/gpiochip0
                up_pin: 2
                stop_pin: 3
                down_pin: 4
                device_gpio_pause_ms: 300
                device:
                    identifier: velux_integra_1
                    manufacturer: VELUX
                    model: INTEGRA
            -   name: Velux 2
                chip: /dev/gpiochip0
                up_pin: 7
                stop_pin: 8
                down_pin: 25
                device_gpio_pause_ms: 300
                device:
                    identifier: velux_integra_2
                    manufacturer: VELUX
                    model: INTEGRA

sunspec:
    -   name: Varta Element
        host: 192.168.0.52
        device_polling_delay_ms: 1000
        device:
            identifier: varta_element_1
            manufacturer: Varta
            model: Element

Example Hardware Setup for two Velux Integra Covers

Required Components

2 Velux Remotes
2 Quad Bilateral Switches (e.g. this)
1 Raspberry Pi 1 B+

Steps

Dismantle the Velux remotes
Solder wires to the power and signal pads on the internal PCB
Connect all components as shown by the schematic (the GPIO pins can free freely chosen, this just needs an adjustment the config shown above)

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