2 Attachment(s)
Steering Wheel Interface for Pioneer Radios
I'm going about creating a steering wheel interface for those of you with Pioneer radios that have the wired remote input.
This is the information about the wired remote:
http://jvde.net/node/7
Here are the resistances you get from the audio controls on the wheel (tested, but these are also from the service manual). Measure between pins 1 and 2 on the audio control pad itself:
71 kOhms = Nothing Pressed
270 Ohms = MODE
740 Ohms = CH UP
1.3 kOhms = CH DOWN
2.1 kOhms = VOL UP
3.1 kOhms = VOL DOWN
4.6 kOhms = SPEECH
6.3 kOhms = OFF HOOK
8.6 kOhms = ON HOOK
They are supposedly routed to the radio on pins 2 and 12 of the main audio harness, but I have not tested that. The service manual does indicate they arrive unmolested there.
I have attached the circuit I plan to build. Sorry for the extremely ugly diagram, I've never used kicad before so... uhhh... still learning. ;) I'll let you all know how well it does or does not work. And I'll add in any significant changes I make (you can set your own choice of output resistors to do any radio functions you like).
As far as I can tell, this should work for any Pioneer stereo that has a 3.5" headphone jack labelled "W/R".
Attachment 11140