The controls for the driver seat in my car (SAAB 9-5 -07) has one really annoying "feature": it is easy to kick of one of the small knobs with your feet. I have done this twice. This might not seem like a big prolem but a broken knob means i need to by a new controller. It costs about $80-100 (~600 swedish kronor) and since they are not produced any more there is a lot of work involved trying to find one to purchase...
So, a hack is in place :)
The purpose of this is to solve a couple of problems:
* Easily replacable knob (should i kick it off again)
* Cheaper solution (reusing the controller by adding some custom electronics)
* Enable remote control via bluetoth and an android app
arduino mini pro (or compatible)
power supply board
to convert from 12v to 5 and 3.3 v
HC-06 bluetooth module
with serial interface. BONUS.
I opened up the controller during the weeken to see what it actually does. The controls consist of mechanical switches which i suppose are connected to the seat motors directly. I need to measure both the voltage that is going through the wires and the current. Me initial idea was just to have the microcontroller feed the wires directly but if there is a lot of current i probably need an array of relays.
Further more, there was no ground connection in the controller module so i need to find this somewhere else...
Anyhow, parts are ordered and planning continues :)