Hello, as I mentioned in a previous post I've installed a Parrot Asteroid Smart, by doing that I've lost the steering wheel's buttons functonality, I was wondering if any of you know how can I control the new headset with this buttons.
If there is no commercial solution I could do something myself using an Arduino but I need to know if my Saab's (9-3 SS from 2004) wheel controls are set up as a resistance ladder. (Pressing each button would change the resistance between two wires that go the headset).

Thank you all