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RE: Hacking into my gas condensing boiler
wow, awesome project, congratulations!!
It took me a moment to understand - please correct me if I got it wrong: The IC on the PCB is 'just' a switch to translate the RS232 signals into the appropriate levels for the optical components (in both directions). The microcontroller you mentioned will then be connected to the RS232 cable as a separate board.
Is there already a uC implementation for your specific boiler model available, or are you going to take German courses and do it on your own? ;)
You got it right. It's a converter that converts the infrared communication to rs232. There are some implementations for Linux (pi variants etc) but no real microcontroller implementatios I know of. The protocol is not too hard though. I'll add a link to the German site. I forgot that. I speak a bit of German and code/schematics/specs are sometimes in English.
sounds doable, indeed. Do you already have move precise plans on the hardware selection and the firmware functionality for the microcontroller board?
Well, since I have been busy with this idea since so long the available boards have changed too much. I'm thinking something simple with a wired Ethernet. Probably some AVR or ARM. Not sure yet. No Linux board, something bare metal.