https://github.com/ellerbach/openveluxmqtt
Velux remote hack with .NET nanoFramework and Home Assistant
https://github.com/ellerbach/openveluxmqtt
Last synced: 23 days ago
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Velux remote hack with .NET nanoFramework and Home Assistant
- Host: GitHub
- URL: https://github.com/ellerbach/openveluxmqtt
- Owner: Ellerbach
- Created: 2022-04-18T12:10:35.000Z (about 4 years ago)
- Default Branch: main
- Last Pushed: 2023-03-06T14:26:00.000Z (over 3 years ago)
- Last Synced: 2025-10-25T16:33:26.637Z (9 months ago)
- Language: C#
- Homepage:
- Size: 166 KB
- Stars: 2
- Watchers: 1
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# Hack Velux remote control to connect with MQTT using .NET nanoFramework
This projects explains how to hack a Velux remote control to control your windows and connecting all this to MQTT. It adds as well an AM2320 for the temperature and humidity. All based on the beautiful [.NET nanoFramework](https://github.com/nanoFramework)!
The reason why it's using a remote control to pilot the Velux is because otherwise you need a special box that connect to your network with a set of API and then you can pilot your Velux. I just wanted to have some fun and same few hundreds euros :-)
Here are few pictures of the final solution:
The original remote control looks like this:
## Some electronic
When stripping out a remote control, be careful of screens and any elements like this. The key principle of a button is to create a contact between 2 elements, like in a physical switch. It's the exact same thing.
In the cas of my remote control, the 2 elements are round, one inside, the other outside. It's important to make sure in which direction the current is going. Equivalent of a physical switch is a saturated transistor in electronic, so that's what we will use. You can see them partially for every button on the previous picture. We will add a small resistor between the ESP32 pin and the collector to reduce the current.
## Some code
I won't comment into details the code. Just that you need to have .NET nanoFramework flashed on the device, the Visual Studio extension installed. See the [getting started here](https://docs.nanoframework.net/content/getting-started-guides/getting-started-managed.html).
## MQTT
You'll need as well a MQTT broker, I'm using [Mosquitto](https://www.mosquitto.org/).
## Home Assistant
And finally you'll need [Home Assistant](https://www.home-assistant.io/) as well. Integrate the MQTT as a platform.
You then add for each of the Velux as sensors:
```yml
# velux
- platform: mqtt
state_topic: "velux/percent0"
name: "Velux Salle de bain"
icon: mdi:window-open
qos: 0
unit_of_measurement: "%"
```
And like this as switch:
```yml
- platform: mqtt
name: "Velux Salle de bain"
command_topic: "velux/action0"
state_topic: "velux/state0"
payload_on: "ON"
payload_off: "OFF"
state_on: "ON"
state_off: "OFF"
optimistic: false
retain: true
qos: 0
```