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      04-06-2021, 04:01 PM   #2
Second Lieutenant
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Drives: BMW E92 328i
Join Date: Feb 2018
Location: Lithuania

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I think different buttons has different resistors. So in theory it should be possible to install M/diamond/star buttons and they should have different resistors in the circuit which would generate different CAN BUS message and hopefully it wont trigger anything and I could receive it with Arduino and trigger something I want.

So the question is what are the resistors for M/diamond/star and other buttons? Is it possible to get circuit photos? Maybe circuit photos exists somewhere? Or anyone able to open and take photos of M/diamond/star button circuits? I would take photos of my buttons too (I have regular Disk/Rotate buttons). It would be possible to compare and see what resistors responsible for what functionality.

Last edited by Hotter; 04-06-2021 at 04:07 PM..
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