I am a complete novice when it comes to the Arduino but I do have an electronics background. On to my project... I have a Pontiac Grand Prix with steering wheel mounted radio controls and this past Christmas I was given an iPod touch. Now I want to mate the two together. The steering wheel controls are a resistance based input circuit that feeds into the back of the radio. Apologies for the bad image, I can upload a better one this evening.
I'm not exactly sure what would be sent to the radio but I'm assuming it detects a voltage level based on which circuit is completed by the series resistors.
Does the Arduino have a built in method to detect something like this or would I need a go between to interpret the voltage level and then feed that as serial data to the Arduino? I found some similar requests around but not the complete info I was looking for.
I basically want to pull out just the next and previous track button pushes which I know I'll need to then send out of the Arduino as serial communication to the iPod. For now I just want to see if I can get the input to work before wasting my time on the output.
Thank you for any help!