optolink TTL adaptater for Viessmann heater.

this adaptater is used to link your computer to a Viessmann heater via optolink. USB link will be made with a standard TTL-USB module.


Note :


I am having trouble with IR sensor. So consider si this projet as work in progress. I can't read any data from SFH309FA sensor. I don't know why. But I can read some signals from KY-022 module. But I won't be able to read serial data with this module. This module is used in 38Khz modulated signals. This is not the case in Viessmann heaters/controlers.


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philantier 4 years, 4 months ago

Hello, I bought the board. Hope it will work.

mqu 4 years, 6 months ago

hello, I am happy to notify you mu first implementation of Viessmann P300 protocol IO in ruby : https://gist.github.com/mqu/9519e39ccc474f111ffb best regards.

mqu 4 years, 8 months ago

hello, take care about this. I am having problems with infrared sensor. So do NOT take this piece of hardware as is.

mblo 4 years, 8 months ago

Hello, i can't find which kind of transistor it's for Q2. Have you a finish photo ? Thanks