jefpatat / hovilink

Homebrew Viessmann Optolink

Hovilink

Homebrew viessmann Optolink is a serial to network interface built to connect a Viessmann Vitotronic heating control to the network or internet.

Motivation

I have been using a bulky self built interface based on information available openv together with PC software. This setup was not handy and serious overkill for the purpose. I want to enable myself to communicate with my heater over the network. To keep this flexible the harware is split up in an interface module which translates the optical signals to RS232. This RS232 can then be connected with various other interfaces.

Limitations

The initial setup of this repository only aims to opensource my personal project and is limited to my personal heater and setup. I'm open to input of the community to expand on this.

Hardware

The Vitotronic uses an optocoupler to communicate. It uses its status LEDs for this. The left, red, LED functions as an error indicator and at the same time as an infrared receiver. The right, green, LED as an operation indicator an infrared transmitter. Further details will be added to the wiki.

Software

TBD

Credits

https://openv.wikispaces.com

hovilink's Issues

uController version

Dear Jef :)

As you got more skills in elektronics design as me, could you make an interface with an esp8266 of ESP32 integrated?

I'm using a perfboard right now, which works, but it is by far not a good looking solution.

I'd be happy to join the effort.